From 4f1161bfec9ca6edba418a56a6f35ad96b1bb523 Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Wed, 30 Sep 2026 14:19:12 +0530 Subject: [PATCH 01/17] fix(inspector): snapshot AutoResponder/Map Remote rules under lock Proxy matching enumerated ObservableCollection while the UI mutated it; snapshot under a shared gate so concurrent edits cannot throw during OnBeforeRequest. --- .../Services/InterceptionService.cs | 4 +- .../ViewModels/AutoResponderViewModel.cs | 80 +++++++++-- .../MainWindowViewModel.Sessions.cs | 8 +- .../ViewModels/MapRemoteViewModel.cs | 74 ++++++++-- .../LiveWebSocketFrameRaceTests.cs | 17 ++- .../RuleListRaceTests.cs | 127 ++++++++++++++++++ .../Scenarios/GraphQlOperationScenario.cs | 8 +- .../Scenarios/MapLocalScenario.cs | 8 +- .../Scenarios/MapRemoteScenario.cs | 8 +- .../Scenarios/SseViewerScenario.cs | 8 +- 10 files changed, 293 insertions(+), 49 deletions(-) create mode 100644 tests/Titanium.Inspector.Tests/RuleListRaceTests.cs diff --git a/src/Titanium.Inspector/Services/InterceptionService.cs b/src/Titanium.Inspector/Services/InterceptionService.cs index ff30179b5..680b9ba20 100644 --- a/src/Titanium.Inspector/Services/InterceptionService.cs +++ b/src/Titanium.Inspector/Services/InterceptionService.cs @@ -1673,8 +1673,8 @@ private SessionSnapshot CreateTunnelSnapshot(TunnelConnectSessionEventArgs e, Op string? requestBody = null; var needsBodyForTools = - (AutoResponder is { Enabled: true } && AutoResponder.Rules.Any(r => r.Enabled && !string.IsNullOrWhiteSpace(r.GraphQlOperationName))) || - (MapRemote is { Enabled: true } && MapRemote.Rules.Any(r => r.Enabled && !string.IsNullOrWhiteSpace(r.GraphQlOperationName))) || + (AutoResponder is { Enabled: true } && AutoResponder.HasEnabledGraphQlRule()) || + (MapRemote is { Enabled: true } && MapRemote.HasEnabledGraphQlRule()) || (Breakpoints is { Enabled: true } && !string.IsNullOrWhiteSpace(Breakpoints.GraphQlOperationName)); if (needsBodyForTools && e.HttpClient.Request.IsBodyRead) { diff --git a/src/Titanium.Inspector/ViewModels/AutoResponderViewModel.cs b/src/Titanium.Inspector/ViewModels/AutoResponderViewModel.cs index b689f482c..2b3ce523d 100644 --- a/src/Titanium.Inspector/ViewModels/AutoResponderViewModel.cs +++ b/src/Titanium.Inspector/ViewModels/AutoResponderViewModel.cs @@ -10,6 +10,7 @@ namespace Titanium.Inspector.ViewModels; /// AutoResponder rules — evaluated before breakpoints. Optional Map Local file body. public sealed class AutoResponderViewModel : INotifyPropertyChanged { + private readonly object _rulesGate = new(); private bool _enabled; private AutoResponderRule? _selectedRule; @@ -29,6 +30,7 @@ public bool Enabled } } + /// UI-bound rule list. Mutate only via / / . public ObservableCollection Rules { get; } = new(); public AutoResponderRule? SelectedRule @@ -52,26 +54,53 @@ public AutoResponderRule? SelectedRule public void NotifyRulesChanged() => RulesChanged?.Invoke(this, EventArgs.Empty); + public void AddRule(AutoResponderRule rule) + { + lock (_rulesGate) + { + Rules.Add(rule); + } + } + + public bool RemoveRule(AutoResponderRule rule) + { + lock (_rulesGate) + { + return Rules.Remove(rule); + } + } + + public void ClearRules() + { + lock (_rulesGate) + { + Rules.Clear(); + } + } + public void LoadFromDtos(IEnumerable dtos) { - Rules.Clear(); - foreach (var dto in dtos) + lock (_rulesGate) { - Rules.Add(new AutoResponderRule + Rules.Clear(); + foreach (var dto in dtos) { - MatchUrl = dto.MatchUrl, - StatusCode = dto.StatusCode, - Body = dto.Body, - ContentType = string.IsNullOrEmpty(dto.ContentType) ? "text/plain" : dto.ContentType, - Enabled = dto.Enabled, - LocalFilePath = dto.LocalFilePath ?? string.Empty, - GraphQlOperationName = dto.GraphQlOperationName ?? string.Empty, - }); + Rules.Add(new AutoResponderRule + { + MatchUrl = dto.MatchUrl, + StatusCode = dto.StatusCode, + Body = dto.Body, + ContentType = string.IsNullOrEmpty(dto.ContentType) ? "text/plain" : dto.ContentType, + Enabled = dto.Enabled, + LocalFilePath = dto.LocalFilePath ?? string.Empty, + GraphQlOperationName = dto.GraphQlOperationName ?? string.Empty, + }); + } } } public List ToDtos() => - Rules.Select(r => new AutoResponderRuleDto + SnapshotRules().Select(r => new AutoResponderRuleDto { MatchUrl = r.MatchUrl, StatusCode = r.StatusCode, @@ -82,6 +111,20 @@ public List ToDtos() => GraphQlOperationName = string.IsNullOrWhiteSpace(r.GraphQlOperationName) ? null : r.GraphQlOperationName, }).ToList(); + /// True when an enabled rule filters by GraphQL operation (needs request body). + public bool HasEnabledGraphQlRule() + { + foreach (var r in SnapshotRules()) + { + if (r.Enabled && !string.IsNullOrWhiteSpace(r.GraphQlOperationName)) + { + return true; + } + } + + return false; + } + public bool TryMatch(string url, string? requestBody, out AutoResponderRule? matched) { matched = null; @@ -90,7 +133,8 @@ public bool TryMatch(string url, string? requestBody, out AutoResponderRule? mat return false; } - foreach (var rule in Rules) + // Snapshot: proxy OnBeforeRequest enumerates while the UI may Add/Remove. + foreach (var rule in SnapshotRules()) { if (!rule.Enabled) { @@ -114,6 +158,16 @@ public bool TryMatch(string url, string? requestBody, out AutoResponderRule? mat return false; } + private AutoResponderRule[] SnapshotRules() + { + lock (_rulesGate) + { + var arr = new AutoResponderRule[Rules.Count]; + Rules.CopyTo(arr, 0); + return arr; + } + } + public bool TryMatch(string url, out AutoResponderRule? matched) => TryMatch(url, requestBody: null, out matched); diff --git a/src/Titanium.Inspector/ViewModels/MainWindowViewModel.Sessions.cs b/src/Titanium.Inspector/ViewModels/MainWindowViewModel.Sessions.cs index e2e2cc228..bfac3295b 100644 --- a/src/Titanium.Inspector/ViewModels/MainWindowViewModel.Sessions.cs +++ b/src/Titanium.Inspector/ViewModels/MainWindowViewModel.Sessions.cs @@ -446,7 +446,7 @@ private Task AddAutoResponderRuleAsync() return Task.CompletedTask; } - AutoResponder.Rules.Add(new AutoResponderRule + AutoResponder.AddRule(new AutoResponderRule { MatchUrl = AutoResponderMatch, StatusCode = status, @@ -468,7 +468,7 @@ private Task DeleteAutoResponderRuleAsync() return Task.CompletedTask; } - AutoResponder.Rules.Remove(AutoResponder.SelectedRule); + AutoResponder.RemoveRule(AutoResponder.SelectedRule); AutoResponder.SelectedRule = null; PersistAutoResponder(); StatusText = "AutoResponder rule deleted"; @@ -534,7 +534,7 @@ private async Task BrowseAutoResponderLocalFileAsync() } private Task AddMapRemoteRuleAsync() { - MapRemote.Rules.Add(new MapRemoteRule + MapRemote.AddRule(new MapRemoteRule { MatchUrl = MapRemoteMatch, TargetUrl = MapRemoteTarget, @@ -553,7 +553,7 @@ private Task DeleteMapRemoteRuleAsync() return Task.CompletedTask; } - MapRemote.Rules.Remove(MapRemote.SelectedRule); + MapRemote.RemoveRule(MapRemote.SelectedRule); MapRemote.SelectedRule = null; PersistMapRemote(); StatusText = "Map Remote rule deleted"; diff --git a/src/Titanium.Inspector/ViewModels/MapRemoteViewModel.cs b/src/Titanium.Inspector/ViewModels/MapRemoteViewModel.cs index dac24482d..2a621d96d 100644 --- a/src/Titanium.Inspector/ViewModels/MapRemoteViewModel.cs +++ b/src/Titanium.Inspector/ViewModels/MapRemoteViewModel.cs @@ -9,6 +9,7 @@ namespace Titanium.Inspector.ViewModels; /// Map Remote rules — rewrite request URL before origin (after AutoResponder). public sealed class MapRemoteViewModel : INotifyPropertyChanged { + private readonly object _rulesGate = new(); private bool _enabled; private MapRemoteRule? _selectedRule; @@ -28,6 +29,7 @@ public bool Enabled } } + /// UI-bound rule list. Mutate only via / / . public ObservableCollection Rules { get; } = new(); public MapRemoteRule? SelectedRule @@ -51,23 +53,50 @@ public MapRemoteRule? SelectedRule public void NotifyRulesChanged() => RulesChanged?.Invoke(this, EventArgs.Empty); + public void AddRule(MapRemoteRule rule) + { + lock (_rulesGate) + { + Rules.Add(rule); + } + } + + public bool RemoveRule(MapRemoteRule rule) + { + lock (_rulesGate) + { + return Rules.Remove(rule); + } + } + + public void ClearRules() + { + lock (_rulesGate) + { + Rules.Clear(); + } + } + public void LoadFromDtos(IEnumerable dtos) { - Rules.Clear(); - foreach (var dto in dtos) + lock (_rulesGate) { - Rules.Add(new MapRemoteRule + Rules.Clear(); + foreach (var dto in dtos) { - MatchUrl = dto.MatchUrl, - TargetUrl = dto.TargetUrl, - Enabled = dto.Enabled, - GraphQlOperationName = dto.GraphQlOperationName ?? string.Empty, - }); + Rules.Add(new MapRemoteRule + { + MatchUrl = dto.MatchUrl, + TargetUrl = dto.TargetUrl, + Enabled = dto.Enabled, + GraphQlOperationName = dto.GraphQlOperationName ?? string.Empty, + }); + } } } public List ToDtos() => - Rules.Select(r => new MapRemoteRuleDto + SnapshotRules().Select(r => new MapRemoteRuleDto { MatchUrl = r.MatchUrl, TargetUrl = r.TargetUrl, @@ -75,6 +104,20 @@ public List ToDtos() => GraphQlOperationName = string.IsNullOrWhiteSpace(r.GraphQlOperationName) ? null : r.GraphQlOperationName, }).ToList(); + /// True when an enabled rule filters by GraphQL operation (needs request body). + public bool HasEnabledGraphQlRule() + { + foreach (var r in SnapshotRules()) + { + if (r.Enabled && !string.IsNullOrWhiteSpace(r.GraphQlOperationName)) + { + return true; + } + } + + return false; + } + public bool TryRewrite(string url, string? requestBody, out string? rewritten, out MapRemoteRule? matched) { rewritten = null; @@ -84,7 +127,8 @@ public bool TryRewrite(string url, string? requestBody, out string? rewritten, o return false; } - foreach (var rule in Rules) + // Snapshot: proxy OnBeforeRequest enumerates while the UI may Add/Remove. + foreach (var rule in SnapshotRules()) { if (!rule.Enabled || string.IsNullOrWhiteSpace(rule.TargetUrl)) { @@ -113,6 +157,16 @@ public bool TryRewrite(string url, string? requestBody, out string? rewritten, o return false; } + private MapRemoteRule[] SnapshotRules() + { + lock (_rulesGate) + { + var arr = new MapRemoteRule[Rules.Count]; + Rules.CopyTo(arr, 0); + return arr; + } + } + public bool TryRewrite(string url, out string? rewritten, out MapRemoteRule? matched) => TryRewrite(url, requestBody: null, out rewritten, out matched); diff --git a/tests/Titanium.Inspector.Tests/LiveWebSocketFrameRaceTests.cs b/tests/Titanium.Inspector.Tests/LiveWebSocketFrameRaceTests.cs index 55fac594f..9fd84aaf7 100644 --- a/tests/Titanium.Inspector.Tests/LiveWebSocketFrameRaceTests.cs +++ b/tests/Titanium.Inspector.Tests/LiveWebSocketFrameRaceTests.cs @@ -38,6 +38,12 @@ public void ArmA_SharedList_EstimateThrowsWhenMutatedDuringEnumeration() var n = 0; while (!stop.IsCancellationRequested) { + // Cap growth so Estimate cannot stall walking millions of frames under parallel load. + if (frames.Count > 64) + { + frames.RemoveRange(1, frames.Count - 1); + } + frames.Add(Frame("w" + n++)); } }); @@ -45,7 +51,7 @@ public void ArmA_SharedList_EstimateThrowsWhenMutatedDuringEnumeration() Exception? caught = null; try { - for (var i = 0; i < 2_000_000 && caught is null; i++) + for (var i = 0; i < 500_000 && caught is null; i++) { try { @@ -55,12 +61,15 @@ public void ArmA_SharedList_EstimateThrowsWhenMutatedDuringEnumeration() "Collection was modified", StringComparison.Ordinal)) { - // Classic List enumerator fail-fast under concurrent Add. caught = ex; } catch (NullReferenceException ex) { - // Concurrent List resize can also tear reads (null element / enumerator). + // Concurrent List resize can also tear reads. + caught = ex; + } + catch (ArgumentOutOfRangeException ex) + { caught = ex; } } @@ -73,7 +82,7 @@ public void ArmA_SharedList_EstimateThrowsWhenMutatedDuringEnumeration() Assert.IsNotNull( caught, - "Arm A must hit shared-list race (modified-during-enumeration or torn null); stress was too weak if this fails."); + "Arm A must hit shared-list race (modified-during-enumeration or torn read); stress was too weak if this fails."); } [TestMethod] diff --git a/tests/Titanium.Inspector.Tests/RuleListRaceTests.cs b/tests/Titanium.Inspector.Tests/RuleListRaceTests.cs new file mode 100644 index 000000000..3cc975fe4 --- /dev/null +++ b/tests/Titanium.Inspector.Tests/RuleListRaceTests.cs @@ -0,0 +1,127 @@ +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Titanium.Inspector.ViewModels; + +namespace Titanium.Inspector.Tests; + +/// +/// Proxy OnBeforeRequest enumerates AutoResponder/Map Remote rules while the UI may +/// Add/Remove. Same InvalidOperationException pattern as the WebSocket frame list — +/// swallowed on the proxy thread today, but still a real race. +/// +[TestClass] +public class RuleListRaceTests +{ + [TestMethod] + public void AutoResponder_TryMatch_SurvivesConcurrentAddRemove() + { + var vm = new AutoResponderViewModel { Enabled = true }; + vm.AddRule(new AutoResponderRule { MatchUrl = "*", Enabled = true, StatusCode = 204 }); + + using var stop = new CancellationTokenSource(); + var writer = Task.Run(() => + { + var n = 0; + while (!stop.IsCancellationRequested) + { + vm.AddRule(new AutoResponderRule + { + MatchUrl = "https://example/" + n++, + Enabled = true, + StatusCode = 200, + }); + if (vm.Rules.Count > 8) + { + vm.ClearRules(); + vm.AddRule(new AutoResponderRule { MatchUrl = "*", Enabled = true, StatusCode = 204 }); + } + } + }); + + Exception? caught = null; + try + { + for (var i = 0; i < 20_000; i++) + { + try + { + _ = vm.TryMatch("https://example.com/", null, out _); + _ = vm.HasEnabledGraphQlRule(); + } + catch (Exception ex) + { + caught = ex; + break; + } + } + } + finally + { + stop.Cancel(); + Assert.IsTrue(writer.Wait(TimeSpan.FromSeconds(5)), "writer did not stop"); + } + + Assert.IsNull(caught, $"AutoResponder rule matching must stay race-free; got {caught}"); + } + + [TestMethod] + public void MapRemote_TryRewrite_SurvivesConcurrentAddRemove() + { + var vm = new MapRemoteViewModel { Enabled = true }; + vm.AddRule(new MapRemoteRule + { + MatchUrl = "https://a.test/*", + TargetUrl = "https://b.test/$1", + Enabled = true, + }); + + using var stop = new CancellationTokenSource(); + var writer = Task.Run(() => + { + var n = 0; + while (!stop.IsCancellationRequested) + { + vm.AddRule(new MapRemoteRule + { + MatchUrl = "https://x" + n++ + ".test/*", + TargetUrl = "https://y.test/", + Enabled = true, + }); + if (vm.Rules.Count > 8) + { + vm.ClearRules(); + vm.AddRule(new MapRemoteRule + { + MatchUrl = "https://a.test/*", + TargetUrl = "https://b.test/$1", + Enabled = true, + }); + } + } + }); + + Exception? caught = null; + try + { + for (var i = 0; i < 20_000; i++) + { + try + { + _ = vm.TryRewrite("https://a.test/path", null, out _, out _); + _ = vm.HasEnabledGraphQlRule(); + } + catch (Exception ex) + { + caught = ex; + break; + } + } + } + finally + { + stop.Cancel(); + Assert.IsTrue(writer.Wait(TimeSpan.FromSeconds(5)), "writer did not stop"); + } + + Assert.IsNull(caught, $"Map Remote rule matching must stay race-free; got {caught}"); + } +} diff --git a/tools/InspectorDesktopProbe/Scenarios/GraphQlOperationScenario.cs b/tools/InspectorDesktopProbe/Scenarios/GraphQlOperationScenario.cs index 3b202ed5a..993ea32ca 100644 --- a/tools/InspectorDesktopProbe/Scenarios/GraphQlOperationScenario.cs +++ b/tools/InspectorDesktopProbe/Scenarios/GraphQlOperationScenario.cs @@ -18,9 +18,9 @@ await harness.OnUiAsync(() => { previousEnabled = harness.ViewModel.AutoResponder.Enabled; previousRules = harness.ViewModel.AutoResponder.Rules.ToArray(); - harness.ViewModel.AutoResponder.Rules.Clear(); + harness.ViewModel.AutoResponder.ClearRules(); harness.ViewModel.AutoResponder.Enabled = true; - harness.ViewModel.AutoResponder.Rules.Add(new AutoResponderRule + harness.ViewModel.AutoResponder.AddRule(new AutoResponderRule { MatchUrl = "*graphql*", StatusCode = 200, @@ -70,10 +70,10 @@ await harness.OnUiAsync(() => { await harness.OnUiAsync(() => { - harness.ViewModel.AutoResponder.Rules.Clear(); + harness.ViewModel.AutoResponder.ClearRules(); foreach (var r in previousRules) { - harness.ViewModel.AutoResponder.Rules.Add(r); + harness.ViewModel.AutoResponder.AddRule(r); } harness.ViewModel.AutoResponder.Enabled = previousEnabled; diff --git a/tools/InspectorDesktopProbe/Scenarios/MapLocalScenario.cs b/tools/InspectorDesktopProbe/Scenarios/MapLocalScenario.cs index 597b6edc1..df922e7b9 100644 --- a/tools/InspectorDesktopProbe/Scenarios/MapLocalScenario.cs +++ b/tools/InspectorDesktopProbe/Scenarios/MapLocalScenario.cs @@ -22,9 +22,9 @@ await harness.OnUiAsync(() => { previousEnabled = harness.ViewModel.AutoResponder.Enabled; previousRules = harness.ViewModel.AutoResponder.Rules.ToArray(); - harness.ViewModel.AutoResponder.Rules.Clear(); + harness.ViewModel.AutoResponder.ClearRules(); harness.ViewModel.AutoResponder.Enabled = true; - harness.ViewModel.AutoResponder.Rules.Add(new AutoResponderRule + harness.ViewModel.AutoResponder.AddRule(new AutoResponderRule { MatchUrl = "*probe-map-local*", StatusCode = 203, @@ -70,10 +70,10 @@ await harness.OnUiAsync(() => { await harness.OnUiAsync(() => { - harness.ViewModel.AutoResponder.Rules.Clear(); + harness.ViewModel.AutoResponder.ClearRules(); foreach (var r in previousRules) { - harness.ViewModel.AutoResponder.Rules.Add(r); + harness.ViewModel.AutoResponder.AddRule(r); } harness.ViewModel.AutoResponder.Enabled = previousEnabled; diff --git a/tools/InspectorDesktopProbe/Scenarios/MapRemoteScenario.cs b/tools/InspectorDesktopProbe/Scenarios/MapRemoteScenario.cs index fa16d42a2..526f200ee 100644 --- a/tools/InspectorDesktopProbe/Scenarios/MapRemoteScenario.cs +++ b/tools/InspectorDesktopProbe/Scenarios/MapRemoteScenario.cs @@ -36,9 +36,9 @@ await harness.OnUiAsync(() => { previousEnabled = harness.ViewModel.MapRemote.Enabled; previousRules = harness.ViewModel.MapRemote.Rules.ToArray(); - harness.ViewModel.MapRemote.Rules.Clear(); + harness.ViewModel.MapRemote.ClearRules(); harness.ViewModel.MapRemote.Enabled = true; - harness.ViewModel.MapRemote.Rules.Add(new MapRemoteRule + harness.ViewModel.MapRemote.AddRule(new MapRemoteRule { MatchUrl = "*probe-map-remote*", TargetUrl = $"http://127.0.0.1:{originPort}/ok", @@ -81,10 +81,10 @@ await harness.OnUiAsync(() => { await harness.OnUiAsync(() => { - harness.ViewModel.MapRemote.Rules.Clear(); + harness.ViewModel.MapRemote.ClearRules(); foreach (var r in previousRules) { - harness.ViewModel.MapRemote.Rules.Add(r); + harness.ViewModel.MapRemote.AddRule(r); } harness.ViewModel.MapRemote.Enabled = previousEnabled; diff --git a/tools/InspectorDesktopProbe/Scenarios/SseViewerScenario.cs b/tools/InspectorDesktopProbe/Scenarios/SseViewerScenario.cs index 7b643784e..767876cf0 100644 --- a/tools/InspectorDesktopProbe/Scenarios/SseViewerScenario.cs +++ b/tools/InspectorDesktopProbe/Scenarios/SseViewerScenario.cs @@ -25,9 +25,9 @@ await harness.OnUiAsync(() => { previousEnabled = harness.ViewModel.AutoResponder.Enabled; previousRules = harness.ViewModel.AutoResponder.Rules.ToArray(); - harness.ViewModel.AutoResponder.Rules.Clear(); + harness.ViewModel.AutoResponder.ClearRules(); harness.ViewModel.AutoResponder.Enabled = true; - harness.ViewModel.AutoResponder.Rules.Add(new AutoResponderRule + harness.ViewModel.AutoResponder.AddRule(new AutoResponderRule { MatchUrl = "*probe-sse*", StatusCode = 200, @@ -108,10 +108,10 @@ await harness.OnUiAsync(() => { await harness.OnUiAsync(() => { - harness.ViewModel.AutoResponder.Rules.Clear(); + harness.ViewModel.AutoResponder.ClearRules(); foreach (var r in previousRules) { - harness.ViewModel.AutoResponder.Rules.Add(r); + harness.ViewModel.AutoResponder.AddRule(r); } harness.ViewModel.AutoResponder.Enabled = previousEnabled; From 80fc8333333d82439afa1692eeaa1765298303e1 Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Wed, 30 Sep 2026 15:12:14 +0530 Subject: [PATCH 02/17] fix(http2): stop refusing streams the browser may still open SETTINGS ACKs now apply only to the frame they acknowledge, and the single-user concurrent-stream cap is 1000 so an x.com-sized fan-out is not reset with REFUSED_STREAM. --- .../Http2/Http2ConnectionState.cs | 72 +++++++++++- .../Http2/Http2Helper.Copy.cs | 26 +++-- .../Options/ProxyProfileSettings.cs | 8 +- .../Options/ProxyResourceLimits.cs | 18 +-- .../Http2ContinuationAndAbuseBudgetTests.cs | 106 ++++++++++++++++++ .../Http2SettingsAckCapTests.cs | 60 ++++++++++ .../ProxyProfileSettingsTests.cs | 2 + .../ProxyResourceLimitsTests.cs | 2 +- 8 files changed, 270 insertions(+), 24 deletions(-) create mode 100644 tests/Titanium.Web.Proxy.UnitTests/Http2SettingsAckCapTests.cs diff --git a/src/Titanium.Web.Proxy/Http2/Http2ConnectionState.cs b/src/Titanium.Web.Proxy/Http2/Http2ConnectionState.cs index 8b93e0274..f324b04c2 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2ConnectionState.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2ConnectionState.cs @@ -1,6 +1,7 @@ using System; using System.Buffers; using System.Collections.Concurrent; +using System.Collections.Generic; using System.IO; using System.Threading; using System.Threading.Tasks; @@ -99,19 +100,78 @@ public Http2ConnectionState(long connectionId, CancellationTokenSource cancellat new(TaskCreationOptions.RunContinuationsAsynchronously); /// - /// Last SETTINGS_MAX_CONCURRENT_STREAMS value advertised toward the client (clamped / - /// injected on the origin→client SETTINGS rewrite). Not used for admission until the client - /// ACKs that SETTINGS (RFC 9113: sender must not assume the peer applied settings before ACK). - /// Default = unlimited (RFC default before a finite setting). + /// Last SETTINGS_MAX_CONCURRENT_STREAMS value written into an origin→client SETTINGS + /// frame. Diagnostic only: admission uses , + /// which advances one acknowledged frame at a time. Copying this field on every client ACK + /// applied a newer, lower cap to an ACK of an older frame and reset streams the browser was + /// still allowed to open (x.com timeline and comments). /// public int PendingMaxConcurrentStreamsTowardClient = int.MaxValue; /// - /// Concurrent-stream cap enforced against client-initiated stream admission. Promoted from - /// when a client SETTINGS ACK is received. + /// Concurrent-stream cap enforced against client-initiated stream admission. Stays at the RFC + /// default (unlimited) until the client ACKs the SETTINGS frame that advertised a finite cap. /// public int EnforcedMaxConcurrentStreamsTowardClient = int.MaxValue; + /// + /// Caps of non-ACK SETTINGS frames already written toward the client, in send order. + /// -1 means that frame did not change SETTINGS_MAX_CONCURRENT_STREAMS. + /// A client ACK consumes the oldest entry (RFC 9113: ACKs are not numbered and apply in order). + /// + private readonly Queue outboundSettingsCapsTowardClient = new(); + + /// + /// ACKs that arrived before ran for the frame + /// they acknowledge. Localhost can ACK in the window after the write returns and before the + /// relay task records the frame. + /// + private int unmatchedClientSettingsAcks; + + private readonly object settingsAckGate = new(); + + /// + /// Records one non-ACK SETTINGS frame that has been written toward the client. + /// is the cap that frame advertised, or + /// when the frame did not change the cap. + /// + internal void CommitSettingsFrameTowardClient(int? maxConcurrentStreams) + { + var encoded = maxConcurrentStreams ?? -1; + lock (settingsAckGate) + { + if (unmatchedClientSettingsAcks > 0) + { + unmatchedClientSettingsAcks--; + if (encoded >= 0) + Volatile.Write(ref EnforcedMaxConcurrentStreamsTowardClient, encoded); + return; + } + + outboundSettingsCapsTowardClient.Enqueue(encoded); + } + } + + /// + /// Applies one client SETTINGS ACK to the oldest SETTINGS frame written toward the client. + /// An ACK never adopts a cap that was staged for a frame the client has not been sent. + /// + internal void ApplyClientSettingsAck() + { + lock (settingsAckGate) + { + if (outboundSettingsCapsTowardClient.Count == 0) + { + unmatchedClientSettingsAcks++; + return; + } + + var encoded = outboundSettingsCapsTowardClient.Dequeue(); + if (encoded >= 0) + Volatile.Write(ref EnforcedMaxConcurrentStreamsTowardClient, encoded); + } + } + /// /// Background tasks for synthetic (proxy-generated) responses, tracked so they can be observed for /// failure and awaited before the owning relay direction completes. Completed tasks are unrooted diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs index fbb015335..2dc8042ee 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs @@ -485,6 +485,11 @@ async Task TrySendGracefulGoAwayAsync() var flags = (Http2FrameFlag)frameHeaderBuffer[4]; int streamId = ReadHttp2StreamId(frameHeaderBuffer); + // Cap carried by a non-ACK SETTINGS frame relayed toward the client on this iteration. + // null = the frame does not change SETTINGS_MAX_CONCURRENT_STREAMS. Applied only when + // that exact frame is ACKed (see Http2ConnectionState.ApplyClientSettingsAck). + int? clientBoundSettingsCap = null; + // Wire id on `input` (origin stream id when reading an origin leg). int peerStreamId = streamId; @@ -1848,14 +1853,11 @@ await lockedOwnLegWrite(async () => return; } - // Client ACK of SETTINGS we advertised toward it: promote Pending → Enforced so - // MaxConcurrentStreams admission matches what the browser has applied (RFC 9113). + // Client ACK of one SETTINGS frame we wrote toward it. ACKs are unnumbered and + // apply in order, so this must not copy the newest pending cap: that value may + // belong to a later SETTINGS frame still on its way to the browser. if (isClient && (flags & Http2FrameFlag.Ack) != 0) - { - Volatile.Write( - ref connectionState.EnforcedMaxConcurrentStreamsTowardClient, - Volatile.Read(ref connectionState.PendingMaxConcurrentStreamsTowardClient)); - } + connectionState.ApplyClientSettingsAck(); bool invalidSettings = false; Http2ErrorCode invalidSettingsError = Http2ErrorCode.ProtocolError; @@ -1973,8 +1975,10 @@ await lockedOwnLegWrite(async () => // against. var effective = Math.Min(advertised, resourceLimits.MaxConcurrentStreamsPerConnection); localSettings.MaxConcurrentStreams = effective; - // Advertise now; enforce only after the client's SETTINGS ACK. + // Record the value on this frame. Enforcement waits for the ACK of + // this frame, not the next ACK that happens to be in flight. Volatile.Write(ref connectionState.PendingMaxConcurrentStreamsTowardClient, effective); + clientBoundSettingsCap = effective; buffer[valueOffset] = (byte)((effective >> 24) & 0xff); buffer[valueOffset + 1] = (byte)((effective >> 16) & 0xff); @@ -2138,6 +2142,7 @@ await lockedOwnLegWrite(async () => var effective = resourceLimits.MaxConcurrentStreamsPerConnection; localSettings.MaxConcurrentStreams = effective; Volatile.Write(ref connectionState.PendingMaxConcurrentStreamsTowardClient, effective); + clientBoundSettingsCap = effective; buffer[length] = (byte)(((int)Http2SettingsId.MaxConcurrentStreams >> 8) & 0xff); buffer[length + 1] = (byte)((int)Http2SettingsId.MaxConcurrentStreams & 0xff); @@ -2703,6 +2708,11 @@ async ValueTask writeFrame() // response on the other relay can safely send HEADERS afterwards. if (!isClient && type == Http2FrameType.Settings && (flags & Http2FrameFlag.Ack) == 0) { + // The SETTINGS bytes are already written (connection-level frames are awaited + // under the output lock above). Pair this frame with its future ACK before any + // further await, so a localhost ACK cannot land against an empty queue and + // then be matched to a later, lower cap. + connectionState.CommitSettingsFrameTowardClient(clientBoundSettingsCap); connectionState.ServerSettingsRelayed.TrySetResult(true); // 1 MiB connection window toward the client — must follow SETTINGS on the diff --git a/src/Titanium.Web.Proxy/Options/ProxyProfileSettings.cs b/src/Titanium.Web.Proxy/Options/ProxyProfileSettings.cs index 1d68d6b83..67f33a614 100644 --- a/src/Titanium.Web.Proxy/Options/ProxyProfileSettings.cs +++ b/src/Titanium.Web.Proxy/Options/ProxyProfileSettings.cs @@ -141,8 +141,12 @@ private ProxyProfileSettings() /// public static ProxyProfileSettings PublicFacing { get; } = new() { - ResourceLimits = ProxyResourceLimits.Default.WithCertificateCacheBounds( - maxCertificateCacheEntries: 4096, maxCertificateDiskCacheEntries: 50_000), + // Keep the pre-1000 stream cap. Default moved to 1000 so a single-user browser session + // (Balanced) can carry an x.com-sized fan-out; an untrusted client must not get that budget. + ResourceLimits = ProxyResourceLimits.Default + .WithMaxConcurrentStreamsPerConnection(256) + .WithCertificateCacheBounds( + maxCertificateCacheEntries: 4096, maxCertificateDiskCacheEntries: 50_000), PolicyModes = ProxyPolicyModes.AllEnforce, SupportedSslProtocols = SslProtocols.Tls12 | SslProtocols.Tls13, BlockPrivateNetworkDestinations = true, diff --git a/src/Titanium.Web.Proxy/Options/ProxyResourceLimits.cs b/src/Titanium.Web.Proxy/Options/ProxyResourceLimits.cs index 27125b237..5716943e7 100644 --- a/src/Titanium.Web.Proxy/Options/ProxyResourceLimits.cs +++ b/src/Titanium.Web.Proxy/Options/ProxyResourceLimits.cs @@ -142,12 +142,13 @@ private ProxyResourceLimits() public int? MaxCertificateDiskCacheEntries { get; private init; } /// - /// Today's shipped values, carried forward as the Balanced profile's starting point - /// per the plan's rollout section: this is not a behavior change for existing traffic. Limits - /// newly introduced by the hardening plan (header aggregate bytes, decompression ratio, - /// CONTINUATION frame count, reset budget, admission cap) are set high enough that no - /// browser-generated traffic should reach them; they are expected to move once the benchmark - /// project has real numbers behind them. + /// Today's shipped values, carried forward as the Balanced profile's starting point. + /// Header, decompression, CONTINUATION, and reset budgets stay high enough that ordinary + /// browser traffic does not trip them. is 1000, + /// matching Chrome's own concurrent-stream setting: 256 reset later requests on a single + /// x.com connection (REFUSED_STREAM) while the same page succeeded with no proxy. + /// The check runs only when a stream is opened, so traffic under the old cap takes the same + /// DATA path. pins the cap back to 256. /// /// is the one deliberate exception to "unchanged /// for existing traffic": measurement showed process memory holding steady at ~100 MB @@ -167,7 +168,10 @@ private ProxyResourceLimits() maxDecodedBodyBytes: null, maxDecompressionRatio: 200, maxConcurrentClients: null, - maxConcurrentStreamsPerConnection: 256, + // Chrome advertises 1000. 256 was below the fan-out of one x.com connection once the + // inspector holds streams open for capture, so later timeline and comment requests were + // reset with REFUSED_STREAM. Workloads that stay under 256 take the same frame path. + maxConcurrentStreamsPerConnection: 1000, maxPeerInitiatedIncompleteStreamResets: 100, maxOpenHeaderBlockFrames: 128, maxOpenHeaderBlockDuration: TimeSpan.FromSeconds(10), diff --git a/tests/Titanium.Web.Proxy.IntegrationTests/Http2ContinuationAndAbuseBudgetTests.cs b/tests/Titanium.Web.Proxy.IntegrationTests/Http2ContinuationAndAbuseBudgetTests.cs index 311fa082a..fe6b92ddd 100644 --- a/tests/Titanium.Web.Proxy.IntegrationTests/Http2ContinuationAndAbuseBudgetTests.cs +++ b/tests/Titanium.Web.Proxy.IntegrationTests/Http2ContinuationAndAbuseBudgetTests.cs @@ -376,4 +376,110 @@ await rawClient.Connection.WriteFrameAsync(Http2FrameType.Settings, 0, Http2Fram cts.Cancel(); } + + // ───────────────────────────────────────────────────────────────────────── + // An ACK applies only to the SETTINGS frame it acknowledges. A later, + // lower MAX_CONCURRENT_STREAMS must not be enforced by the previous ACK + // (that reset in-flight x.com timeline/comment streams). + // ───────────────────────────────────────────────────────────────────────── + + [TestMethod] + [Timeout(20_000)] + public async Task MaxConcurrentStreams_FirstAckDoesNotEnforceALaterLowerCap() + { + const int firstCap = 4; + const int secondCap = 1; + using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(8)); + using var rawServer = new Http2RawOriginServer(TestCertificateAuthority.ServerCertificate); + rawServer.HandleConnection(async connection => + { + await connection.WriteFrameAsync(Http2FrameType.Settings, 0, 0, MaxConcurrentStreamsPayload(firstCap)); + await connection.WriteFrameAsync(Http2FrameType.Settings, 0, 0, MaxConcurrentStreamsPayload(secondCap)); + try { await Task.Delay(Timeout.Infinite, cts.Token); } catch { } + }); + + using var testSuite = new TestSuite(sharedServer); + var proxy = testSuite.GetProxy(); + proxy.EnableHttp2 = true; + proxy.ResourceLimits = CreateLimits(maxConcurrentStreamsPerConnection: 100); + + var serverUri = new Uri(rawServer.Url); + using var rawClient = + await Http2RawClient.ConnectAsync(proxy.ProxyEndPoints[0].Port, serverUri.Host, serverUri.Port); + + var first = await rawClient.Connection.ReadSettingsAsync(); + var second = await rawClient.Connection.ReadSettingsAsync(); + Assert.AreEqual(firstCap, first[(int)Http2SettingsId.MaxConcurrentStreams]); + Assert.AreEqual(secondCap, second[(int)Http2SettingsId.MaxConcurrentStreams]); + + // ACK only the first frame. The second cap is already on the wire, which is the race. + await rawClient.Connection.WriteFrameAsync(Http2FrameType.Settings, 0, Http2FrameFlag.Ack, + Array.Empty()); + + async Task OpenGetAsync(int streamId) + { + var headers = rawClient.Connection.EncodeHeaders( + new[] + { + (":method", "GET"), (":scheme", "https"), + (":authority", $"{serverUri.Host}:{serverUri.Port}"), (":path", "/") + }, + Array.Empty<(string, string)>()); + await rawClient.Connection.WriteHeaderBlockAsync(streamId, headers, endStream: true); + } + + await OpenGetAsync(1); + await OpenGetAsync(3); + + Task? pendingRead = null; + async Task WaitForRstAsync(int[] streamIds, TimeSpan timeout) + { + var deadline = DateTime.UtcNow + timeout; + while (DateTime.UtcNow < deadline) + { + pendingRead ??= rawClient.Connection.ReadFrameAsync(); + var remaining = deadline - DateTime.UtcNow; + if (remaining <= TimeSpan.Zero) + break; + + var finished = await Task.WhenAny(pendingRead, Task.Delay(remaining)); + if (finished != pendingRead) + return null; + + var frame = await pendingRead; + pendingRead = null; + if (frame.Type == Http2FrameType.RstStream && Array.IndexOf(streamIds, frame.StreamId) >= 0) + return frame.StreamId; + } + + return null; + } + + var earlyRefusal = await WaitForRstAsync(new[] { 1, 3 }, TimeSpan.FromMilliseconds(400)); + Assert.IsNull(earlyRefusal, + "Streams within the ACKed cap must not be refused because a later SETTINGS lowered the cap."); + + await rawClient.Connection.WriteFrameAsync(Http2FrameType.Settings, 0, Http2FrameFlag.Ack, + Array.Empty()); + await OpenGetAsync(5); + + var refused = await WaitForRstAsync(new[] { 5 }, TimeSpan.FromSeconds(3)); + Assert.AreEqual(5, refused, + "After the second SETTINGS is ACKed, a new stream past that cap must be REFUSED_STREAM."); + + cts.Cancel(); + } + + private static byte[] MaxConcurrentStreamsPayload(int cap) + { + var payload = new byte[6]; + var id = (int)Http2SettingsId.MaxConcurrentStreams; + payload[0] = (byte)((id >> 8) & 0xff); + payload[1] = (byte)(id & 0xff); + payload[2] = (byte)((cap >> 24) & 0xff); + payload[3] = (byte)((cap >> 16) & 0xff); + payload[4] = (byte)((cap >> 8) & 0xff); + payload[5] = (byte)(cap & 0xff); + return payload; + } } diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2SettingsAckCapTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2SettingsAckCapTests.cs new file mode 100644 index 000000000..9dd8daaec --- /dev/null +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2SettingsAckCapTests.cs @@ -0,0 +1,60 @@ +using System.Threading; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Titanium.Web.Proxy.Http2; + +namespace Titanium.Web.Proxy.UnitTests; + +/// +/// SETTINGS ACKs are not numbered. Enforcement must follow the frame that was actually +/// acknowledged, including when the ACK wins the race against recording that frame. +/// +[TestClass] +public class Http2SettingsAckCapTests +{ + [TestMethod] + public void AckAppliesTheOldestAdvertisedCap_NotTheNewest() + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts, maxPooledStreamStates: 8); + state.CommitSettingsFrameTowardClient(8); + state.CommitSettingsFrameTowardClient(1); + + state.ApplyClientSettingsAck(); + Assert.AreEqual(8, state.EnforcedMaxConcurrentStreamsTowardClient); + + state.ApplyClientSettingsAck(); + Assert.AreEqual(1, state.EnforcedMaxConcurrentStreamsTowardClient); + } + + [TestMethod] + public void AckThatArrivesBeforeTheFrameIsRecorded_AppliesThatFrameOnly() + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts, maxPooledStreamStates: 8); + + state.ApplyClientSettingsAck(); + state.CommitSettingsFrameTowardClient(8); + Assert.AreEqual(8, state.EnforcedMaxConcurrentStreamsTowardClient); + + state.CommitSettingsFrameTowardClient(1); + Assert.AreEqual(8, state.EnforcedMaxConcurrentStreamsTowardClient, + "A later SETTINGS frame waits for its own ACK."); + + state.ApplyClientSettingsAck(); + Assert.AreEqual(1, state.EnforcedMaxConcurrentStreamsTowardClient); + } + + [TestMethod] + public void SettingsFrameThatDoesNotChangeTheCap_LeavesEnforcementAlone() + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts, maxPooledStreamStates: 8); + state.CommitSettingsFrameTowardClient(8); + state.ApplyClientSettingsAck(); + + state.CommitSettingsFrameTowardClient(null); + state.ApplyClientSettingsAck(); + + Assert.AreEqual(8, state.EnforcedMaxConcurrentStreamsTowardClient); + } +} diff --git a/tests/Titanium.Web.Proxy.UnitTests/ProxyProfileSettingsTests.cs b/tests/Titanium.Web.Proxy.UnitTests/ProxyProfileSettingsTests.cs index 91b443f2a..439dbfb76 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/ProxyProfileSettingsTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/ProxyProfileSettingsTests.cs @@ -88,6 +88,8 @@ public void PublicFacing_IsAllEnforceWithOutboundBlockingAndTighterTimeouts() Assert.IsTrue(settings.IdleReadTimeoutSeconds > 0); Assert.IsTrue(settings.IdleWriteTimeoutSeconds > 0); Assert.IsTrue(settings.RequestTimeoutSeconds > 0); + Assert.AreEqual(256, settings.ResourceLimits.MaxConcurrentStreamsPerConnection, + "PublicFacing keeps the tighter stream cap; Balanced uses Chrome's 1000."); } [TestMethod] diff --git a/tests/Titanium.Web.Proxy.UnitTests/ProxyResourceLimitsTests.cs b/tests/Titanium.Web.Proxy.UnitTests/ProxyResourceLimitsTests.cs index 5021d237c..76e9c0444 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/ProxyResourceLimitsTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/ProxyResourceLimitsTests.cs @@ -19,7 +19,7 @@ public void Default_IsValid() var limits = ProxyResourceLimits.Default; Assert.IsTrue(limits.MaxHeaderLineBytes > 0); - Assert.IsTrue(limits.MaxConcurrentStreamsPerConnection > 0); + Assert.AreEqual(1000, limits.MaxConcurrentStreamsPerConnection); Assert.IsTrue(limits.ConnectionPoolingEnabled); Assert.IsTrue(limits.MaxCachedConnectionsPerHost > 0); Assert.IsNull(limits.MaxConcurrentClients, "Admission cap is opt-in under the Balanced default."); From e833c765c47d2a939f6715a13b31ef555ddac9db Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Wed, 30 Sep 2026 15:27:20 +0530 Subject: [PATCH 03/17] fix(proxy): recover a desynced status line and a stalled HTTP/2 window wait A reused connection whose first line is not an HTTP status is retried when the request can be replayed. SendBody drops the output write lock while waiting for WINDOW_UPDATE so the other frame loop can still read that credit. --- .../Http2/Http2Helper.Copy.cs | 7 +- .../Http2/Http2Helper.Send.cs | 86 +++++++++++++++---- .../Network/HttpWebClient.cs | 38 +++++++- .../StaleKeepAliveTests.cs | 68 +++++++++++++++ .../Http2HelperFrameWriterTests.cs | 49 +++++++++++ 5 files changed, 222 insertions(+), 26 deletions(-) diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs index 2dc8042ee..13c84ac64 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs @@ -2441,13 +2441,14 @@ await lockedOwnLegWrite(async () => if (bodyStreamState?.IsExternalBridge != true) { // Drain queued HEADERS/DATA so this SendBody cannot overtake them on the wire. + // SendBody takes outputWriteLock around the writes and drops it while waiting + // for WINDOW_UPDATE, so this frame loop is not parked on ReserveAsync. if (isClient) await connectionState.ServerWriteChain; else await connectionState.ClientWriteChain; - await lockedOutputWrite(() => - SendBody(remoteSettings, rr, frameHeader, frameHeaderBuffer, buffer, outboundFlow, - output, cancellationToken)); + await SendBody(remoteSettings, rr, frameHeader, frameHeaderBuffer, buffer, outboundFlow, + output, cancellationToken, outputWriteLock); } } diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs index 49612b99b..1376c835d 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs @@ -366,35 +366,83 @@ private static async ValueTask WriteHeaderBlockMultiAsync(Http2FrameHeader frame internal static async ValueTask SendBody(Http2Settings settings, RequestResponseBase rr, Http2FrameHeader frameHeader, // NOSONAR S107 -- Frame-writing state is kept explicit for this low-level helper. byte[] frameHeaderBuffer, byte[] buffer, Http2FlowController flow, Stream output, - CancellationToken cancellationToken) + CancellationToken cancellationToken, SemaphoreSlim? writeLock = null) { - var body = rr.CompressBodyAndUpdateContentLength(); - await SendHeader(settings, frameHeader, frameHeaderBuffer, rr, !(rr.HasBody && rr.IsBodyRead), output, false); + // When writeLock is set, this method owns it. Credit waits must not hold it: the other + // direction's frame loop needs the same lock to write receive-credit WINDOW_UPDATE, and + // that loop is also what reads the WINDOW_UPDATE that would unblock this reserve. + // Holding the lock across ReserveAsync stalls both and hits ReservationTimeout (60s). + // The common path (TryReserve succeeds) keeps HEADERS + DATA under one lock acquire. + var lockHeld = false; + + async ValueTask EnsureLockAsync() + { + if (writeLock == null || lockHeld) + return; + + await writeLock.WaitAsync(cancellationToken).ConfigureAwait(false); + lockHeld = true; + } - if (rr.HasBody && rr.IsBodyRead) + void ReleaseLock() + { + if (writeLock == null || !lockHeld) + return; + + writeLock.Release(); + lockHeld = false; + } + + try { - if (body == null) - throw new InvalidOperationException("An HTTP/2 body was marked as read but is unavailable."); + var body = rr.CompressBodyAndUpdateContentLength(); + await EnsureLockAsync().ConfigureAwait(false); + await SendHeader(settings, frameHeader, frameHeaderBuffer, rr, !(rr.HasBody && rr.IsBodyRead), output, + false); - int streamId = frameHeader.StreamId; - int pos = 0; - while (pos < body.Length) + if (rr.HasBody && rr.IsBodyRead) { - int bodyFrameLength = Math.Min(buffer.Length, body.Length - pos); - Buffer.BlockCopy(body, pos, buffer, 0, bodyFrameLength); - pos += bodyFrameLength; + if (body == null) + throw new InvalidOperationException("An HTTP/2 body was marked as read but is unavailable."); - await flow.ReserveAsync(streamId, bodyFrameLength, cancellationToken); + int streamId = frameHeader.StreamId; + int pos = 0; + while (pos < body.Length) + { + int bodyFrameLength = Math.Min(buffer.Length, body.Length - pos); + Buffer.BlockCopy(body, pos, buffer, 0, bodyFrameLength); + pos += bodyFrameLength; + + if (writeLock != null) + { + if (!flow.TryReserve(streamId, bodyFrameLength)) + { + ReleaseLock(); + await flow.ReserveAsync(streamId, bodyFrameLength, cancellationToken) + .ConfigureAwait(false); + await EnsureLockAsync().ConfigureAwait(false); + } + } + else + { + await flow.ReserveAsync(streamId, bodyFrameLength, cancellationToken) + .ConfigureAwait(false); + } - frameHeader.Length = bodyFrameLength; - frameHeader.Type = Http2FrameType.Data; - frameHeader.Flags = pos < body.Length ? (Http2FrameFlag)0 : Http2FrameFlag.EndStream; + frameHeader.Length = bodyFrameLength; + frameHeader.Type = Http2FrameType.Data; + frameHeader.Flags = pos < body.Length ? (Http2FrameFlag)0 : Http2FrameFlag.EndStream; - frameHeader.CopyToBuffer(frameHeaderBuffer); - await WriteTwoAsync(output, frameHeaderBuffer.AsMemory(0, 9), - buffer.AsMemory(0, bodyFrameLength), cancellationToken); + frameHeader.CopyToBuffer(frameHeaderBuffer); + await WriteTwoAsync(output, frameHeaderBuffer.AsMemory(0, 9), + buffer.AsMemory(0, bodyFrameLength), cancellationToken); + } } } + finally + { + ReleaseLock(); + } } /// diff --git a/src/Titanium.Web.Proxy/Network/HttpWebClient.cs b/src/Titanium.Web.Proxy/Network/HttpWebClient.cs index 45d75bb7f..db9ca91eb 100644 --- a/src/Titanium.Web.Proxy/Network/HttpWebClient.cs +++ b/src/Titanium.Web.Proxy/Network/HttpWebClient.cs @@ -368,7 +368,16 @@ internal ValueTask ReceiveResponse(CancellationToken cancellationToken) Response.RequestMethod = Request.Method; - var statusVt = Connection.Stream.ReadResponseStatus(cancellationToken); + ValueTask statusVt; + try + { + statusVt = Connection.Stream.ReadResponseStatus(cancellationToken); + } + catch (FormatException ex) when (CanRetryMalformedStatusLine()) + { + throw MalformedStatusLine(ex); + } + if (!statusVt.IsCompletedSuccessfully) return ReceiveResponseSlowAsync(statusVt, cancellationToken); @@ -381,8 +390,11 @@ private ValueTask ReceiveResponseAfterStatus(ResponseStatusInfo? httpStatus, if (httpStatus == null) { // EOF before any response bytes: typically a stale pooled keep-alive connection. - // RetryPolicy re-runs the whole exchange; only safe when there is no body or the - // body is buffered in memory (IsBodyRead). A streamed body cannot be replayed. + // A malformed status line (same method, below) is the sibling case: the socket + // stayed open but the next bytes are not an HTTP status line, usually leftover + // body from a desynced keep-alive. RetryPolicy re-runs the whole exchange; only + // safe when there is no body or the body is buffered in memory (IsBodyRead). + // A streamed body cannot be replayed. if (!Request.HasBody || Request.IsBodyRead) throw new RetryableServerConnectionException( "Server connection was closed before any response was received."); @@ -408,10 +420,28 @@ private ValueTask ReceiveResponseAfterStatus(ResponseStatusInfo? httpStatus, private async ValueTask ReceiveResponseSlowAsync(ValueTask statusVt, CancellationToken cancellationToken) { - var httpStatus = await statusVt; + ResponseStatusInfo? httpStatus; + try + { + httpStatus = await statusVt; + } + catch (FormatException ex) when (CanRetryMalformedStatusLine()) + { + throw MalformedStatusLine(ex); + } + await ReceiveResponseAfterStatus(httpStatus, cancellationToken); } + /// + /// A status-line happens before any response bytes are committed + /// to the client. Replaying is the same rule as EOF-before-response. + /// + private bool CanRetryMalformedStatusLine() => !Request.HasBody || Request.IsBodyRead; + + private static RetryableServerConnectionException MalformedStatusLine(FormatException ex) => + new("Server returned a response that did not start with an HTTP status line.", ex); + private static async ValueTask ReceiveResponseAwaitHeadersAsync(ValueTask headersVt, CancellationToken cancellationToken) { diff --git a/tests/Titanium.Web.Proxy.IntegrationTests/StaleKeepAliveTests.cs b/tests/Titanium.Web.Proxy.IntegrationTests/StaleKeepAliveTests.cs index 7131f20df..798f7f8db 100644 --- a/tests/Titanium.Web.Proxy.IntegrationTests/StaleKeepAliveTests.cs +++ b/tests/Titanium.Web.Proxy.IntegrationTests/StaleKeepAliveTests.cs @@ -108,6 +108,74 @@ public async Task IdleOriginClose_NextBodylessRequest_SucceedsViaRetry() + string.Join(" | ", capturing.DebugMessages)); } + [TestMethod] + [Timeout(60 * 1000)] + public async Task MalformedStatusOnReusedConnection_BodylessRequest_SucceedsViaRetry() + { + using var testSuite = new TestSuite(); + var server = testSuite.GetServer(); + + var acceptCount = 0; + var requestsOnFirstConnection = 0; + + server.HandleTcpRequest(async context => + { + var n = Interlocked.Increment(ref acceptCount); + await DrainRequestHeaders(context); + + if (n == 1) + { + var response = MsgEncoding.GetBytes( + "HTTP/1.1 200 OK\r\n" + + "Content-Length: 2\r\n" + + "Connection: keep-alive\r\n" + + "\r\n" + + "ok"); + await context.Transport.Output.WriteAsync(response); + + // Same socket, next request: bytes that are not an HTTP status line. + await DrainRequestHeaders(context); + Interlocked.Increment(ref requestsOnFirstConnection); + await context.Transport.Output.WriteAsync(MsgEncoding.GetBytes("NOTHTTP\r\n")); + await Task.Delay(500); + return; + } + + var retry = MsgEncoding.GetBytes( + "HTTP/1.1 200 OK\r\n" + + "Content-Length: 2\r\n" + + "Connection: close\r\n" + + "\r\n" + + "ok"); + await context.Transport.Output.WriteAsync(retry); + }); + + var proxy = testSuite.GetReverseProxy(); + proxy.EnableConnectionPool = true; + + proxy.BeforeRequest += (_, e) => + { + e.HttpClient.Request.Url = server.ListeningTcpUrl; + return Task.CompletedTask; + }; + + var client = testSuite.GetReverseProxyClient(); + var proxyUrl = new Uri($"http://localhost:{proxy.ProxyEndPoints[0].Port}/"); + + var first = await client.GetAsync(proxyUrl); + Assert.AreEqual(HttpStatusCode.OK, first.StatusCode); + Assert.AreEqual("ok", await first.Content.ReadAsStringAsync()); + + var second = await client.GetAsync(proxyUrl); + Assert.AreEqual(HttpStatusCode.OK, second.StatusCode); + Assert.AreEqual("ok", await second.Content.ReadAsStringAsync()); + + Assert.IsTrue(requestsOnFirstConnection >= 1, + "The pooled connection was not reused, so the malformed status line was never read."); + Assert.IsTrue(acceptCount >= 2, + $"Expected a fresh upstream accept after the malformed status line; acceptCount={acceptCount}"); + } + private static async Task DrainRequestHeaders(ConnectionContext context) { var requestText = string.Empty; diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2HelperFrameWriterTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2HelperFrameWriterTests.cs index d56b7fffc..648ba80a7 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/Http2HelperFrameWriterTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2HelperFrameWriterTests.cs @@ -406,6 +406,55 @@ public async Task SendBody_BufferSmallerThanBody_WritesMultipleDataFrames() Assert.AreEqual((byte)Http2FrameFlag.EndStream, finalFlags); } + [TestMethod] + public async Task SendBody_DropsWriteLockWhileWaitingForWindowCredit() + { + using var ms = new MemoryStream(); + var (header, buf) = NewFrameScratch(3); + var response = new Response + { + HttpVersion = HttpHeader.Version20, + StatusCode = 200, + Body = Encoding.ASCII.GetBytes("abcd"), + IsBodyRead = true + }; + var flow = new Http2FlowController(); + flow.OnInitialWindowSizeChanged(0); + flow.RegisterStream(3); + using var writeLock = new SemaphoreSlim(1, 1); + + var send = Http2Helper.SendBody(new Http2Settings(), response, header, buf, new byte[4], flow, ms, + CancellationToken.None, writeLock).AsTask(); + + // Headers must already be on the wire, the send still blocked, and the lock free. + // Acquiring the lock before SendBody starts would pass even if the wait held the lock. + var sawHeadersWrittenWhileLockFree = false; + var deadline = DateTime.UtcNow.AddSeconds(2); + while (DateTime.UtcNow < deadline && !send.IsCompleted) + { + if (ms.Length > 0 && await writeLock.WaitAsync(20)) + { + if (!send.IsCompleted && ms.Length > 0) + sawHeadersWrittenWhileLockFree = true; + writeLock.Release(); + if (sawHeadersWrittenWhileLockFree) + break; + } + else + { + await Task.Delay(5); + } + } + + Assert.IsTrue(sawHeadersWrittenWhileLockFree, + "SendBody held the output write lock while waiting for WINDOW_UPDATE credit."); + + flow.OnWindowUpdate(3, 65535); + await send.WaitAsync(TimeSpan.FromSeconds(2)); + + Assert.IsTrue(ms.Length > 9, "HEADERS plus DATA should have been written after credit arrived."); + } + [TestMethod] public async Task EnqueueRstStream_MatchesSendRstStreamAsync() { From da92639a7c00fff13aa1ff5d0f77a9244cb59988 Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Wed, 30 Sep 2026 21:36:14 +0530 Subject: [PATCH 04/17] fix(http2): keep buffered request HEADERS in wire order and stream-id order Buffered-body HTTP/2 requests wrote HEADERS directly under the write lock, bypassing the writer FIFO, and could reach the origin with a lower stream id after a higher one (RFC 9113 5.1.1 connection PROTOCOL_ERROR). This broke x.com comments/timeline only while the MITM proxy was in the path. - SendBody/SendTrailer now enqueue on the per-direction FIFO (QueueSendHeader/QueueSendData/QueueSendTrailer); HPACK encode and enqueue are atomic. - Requests with bodies get an admission gate in the dispatch chain; buffered requests defer HEADERS to body end and are sent in admission order from a tracked task. Reset/abort/finalize always complete the admission; a client RST for a never-opened origin stream is not forwarded. - Malformed status line retry is limited to idempotent GET/HEAD (a POST may already have been processed). - Debug-only HeaderBuilder inUse guard no longer trips on directly constructed builders. - Tests: wire-order HPACK sequence, queued send ordering, reset/cancel admission, POST not replayed; benchmark gains a buffered-POST case. --- .../Http2ProxyThroughputBenchmarks.cs | 21 ++ src/Titanium.Web.Proxy/Http/HeaderBuilder.cs | 3 +- .../Http/RequestResponseBase.cs | 24 ++ .../Http2/Http2Helper.Copy.Headers.cs | 54 +++- .../Http2/Http2Helper.Copy.cs | 48 +++- .../Http2/Http2Helper.Finalize.cs | 4 + .../Http2/Http2Helper.Send.cs | 152 ++++++----- .../Network/HttpWebClient.cs | 9 +- .../StaleKeepAliveTests.cs | 63 +++++ .../Http2BufferedSendOrderingTests.cs | 246 ++++++++++++++++++ .../Http2HelperFrameWriterTests.cs | 16 +- .../Http2HpackSequenceTests.cs | 103 ++++++++ .../Http2OriginRelayPoolTests.cs | 3 + .../Http2QueuedSend.cs | 45 ++++ ...p2SyntheticFinalizeAndAuthUserPassTests.cs | 2 +- .../SonarNewCodeCoverageTests.cs | 4 +- 16 files changed, 694 insertions(+), 103 deletions(-) create mode 100644 tests/Titanium.Web.Proxy.UnitTests/Http2BufferedSendOrderingTests.cs create mode 100644 tests/Titanium.Web.Proxy.UnitTests/Http2HpackSequenceTests.cs create mode 100644 tests/Titanium.Web.Proxy.UnitTests/Http2QueuedSend.cs diff --git a/benchmarks/Titanium.Web.Proxy.Benchmarks/Http2ProxyThroughputBenchmarks.cs b/benchmarks/Titanium.Web.Proxy.Benchmarks/Http2ProxyThroughputBenchmarks.cs index 8d7b73bfb..a5274e60a 100644 --- a/benchmarks/Titanium.Web.Proxy.Benchmarks/Http2ProxyThroughputBenchmarks.cs +++ b/benchmarks/Titanium.Web.Proxy.Benchmarks/Http2ProxyThroughputBenchmarks.cs @@ -51,6 +51,7 @@ public void Setup() }); originApp = builder.Build(); originApp.MapGet("/bench", () => ResponseBody); + originApp.MapPost("/bench", () => ResponseBody); originApp.Start(); proxyServer = new ProxyServer(false, false, false); @@ -63,6 +64,14 @@ public void Setup() return Task.CompletedTask; }; + // Buffer request bodies like an inspecting client (Titanium Inspector) does: this selects the + // buffered-body path (deferred HEADERS until body end), not the streamed relay path. + proxyServer.BeforeRequest += async (_, args) => + { + if (args.HttpClient.Request.HasBody) + await args.GetRequestBody(); + }; + var endPoint = new ExplicitProxyEndPoint(IPAddress.Loopback, 0); proxyServer.AddEndPoint(endPoint); proxyServer.Start(); @@ -100,6 +109,18 @@ public async Task MultiplexedGets() await Task.WhenAll(tasks); } + /// Buffered-body requests multiplexed on one connection (the x.com-shaped path). + [Benchmark] + public async Task MultiplexedBufferedPosts() + { + var tasks = new Task[ConcurrentStreams]; + for (var i = 0; i < ConcurrentStreams; i++) + tasks[i] = client.PostAsync(targetUri, new StringContent("{\"q\":\"0123456789abcdef\"}")); + var responses = await Task.WhenAll(tasks); + foreach (var response in responses) + response.Dispose(); + } + private static int GetFreeTcpPort() { var listener = new System.Net.Sockets.TcpListener(IPAddress.Loopback, 0); diff --git a/src/Titanium.Web.Proxy/Http/HeaderBuilder.cs b/src/Titanium.Web.Proxy/Http/HeaderBuilder.cs index 0aefa70b2..b21cd1a97 100644 --- a/src/Titanium.Web.Proxy/Http/HeaderBuilder.cs +++ b/src/Titanium.Web.Proxy/Http/HeaderBuilder.cs @@ -15,7 +15,8 @@ internal class HeaderBuilder private readonly MemoryStream stream = new(256); #if DEBUG - private bool inUse; + // Directly constructed builders (never pooled) are always live; only Return() clears this. + private bool inUse = true; #endif /// Rents a thread-local builder (cleared). Caller must it. diff --git a/src/Titanium.Web.Proxy/Http/RequestResponseBase.cs b/src/Titanium.Web.Proxy/Http/RequestResponseBase.cs index a902bcba2..65df396e6 100644 --- a/src/Titanium.Web.Proxy/Http/RequestResponseBase.cs +++ b/src/Titanium.Web.Proxy/Http/RequestResponseBase.cs @@ -33,6 +33,26 @@ public abstract class RequestResponseBase internal bool Http2IgnoreBodyFrames; + /// True once this message's HEADERS have been queued toward the peer. SendBody must not send them again. + internal bool Http2HeadersQueued; + + /// + /// Requests that carry a body: completes once this request's origin decision is final and its HEADERS + /// are queued (or it will never be sent). The next request's dispatch chains on it so the origin + /// observes newly opened streams in increasing stream-id order (RFC 9113 §5.1.1) even when this + /// request's HEADERS are only sent after its buffered body arrived. Never awaited by the frame loop. + /// + internal TaskCompletionSource? Http2OriginAdmitted; + + /// + /// Admission of the previous request on the connection; a buffered-body request queues its HEADERS + /// only after this completes. Set when the HEADERS are deferred until the body arrived. + /// + internal Task? Http2AdmitAfter; + + /// True when the HEADERS were deferred until the buffered body was complete. + internal bool Http2HeadersDeferred; + /// /// Priority used only in HTTP/2 /// @@ -416,6 +436,10 @@ internal void ResetWireState() Http2BodyData?.Dispose(); Http2BodyData = null; Http2IgnoreBodyFrames = false; + Http2HeadersQueued = false; + Http2OriginAdmitted = null; + Http2AdmitAfter = null; + Http2HeadersDeferred = false; Priority = null; ReadHttp2BeforeHandlerTaskCompletionSource = null; ReadHttp2BodyTaskCompletionSource = null; diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs index 963a166e1..ba16b3bb1 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs @@ -411,11 +411,11 @@ internal partial class Http2Helper if (!syntheticStreams.ContainsKey(hbStreamId)) { - // Drain queued HEADERS/DATA so trailers cannot overtake them on the wire. - if (isClient) - await connectionState.ServerWriteChain; - await lockedOutputWrite(() => SendTrailer(remoteSettings, frameHeader, frameHeaderBuffer, - hbStreamId, headerRr.TrailingHeaders, endStreamFlag, output)); + // Queued on the same ordered FIFO as the stream's HEADERS/DATA so trailers cannot + // overtake them on the wire. + QueueSendTrailer(connectionState, towardServer: isClient, outputWriteLock, remoteSettings, + frameHeader, frameHeaderBuffer, hbStreamId, headerRr.TrailingHeaders, endStreamFlag, + output); } return false; @@ -474,6 +474,14 @@ await lockedOutputWrite(() => SendTrailer(remoteSettings, frameHeader, frameHead TaskCompletionSource? tcs = endStreamFlag ? null : new TaskCompletionSource(); request.ReadHttp2BeforeHandlerTaskCompletionSource = tcs; + // Requests with a body may buffer it (GetRequestBody) and then send their HEADERS only at + // body end. The next request must not reach the origin before that (stream ids must + // increase on the wire), so its dispatch chains on this admission instead of the dispatch task. + var originAdmitted = tcs == null + ? null + : new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + request.Http2OriginAdmitted = originAdmitted; + var streamContext = new Http2StreamContext(hbStreamId, connectionState, isClient ? input : output, cancellationToken); @@ -595,7 +603,11 @@ async Task DispatchRequestAfterHeadersAsync(Task? prestartedHandler = null) // The origin must observe newly opened client streams in increasing stream-id order. // Handlers run concurrently, but admit each completed decision after the prior stream's // decision has queued (or suppressed) its HEADERS. - await previousDispatch; + // A request whose handler is waiting for the buffered body defers its HEADERS to body + // end; that wait must not run here (this task gates DATA routing on the frame loop, and + // the previous request's body may only arrive in frames behind this stream's DATA). + if (handlerCompleted) + await previousDispatch; if (handlerCompleted) { @@ -869,6 +881,8 @@ await RelayCompressedHeaderBlockAsync( } else { + request.Http2AdmitAfter = previousDispatch; + request.Http2HeadersDeferred = true; request.Http2IgnoreBodyFrames = true; } @@ -880,8 +894,27 @@ await RelayCompressedHeaderBlockAsync( Task dispatchTask = forceStaticHpackTable && httpInterceptionEnabled ? StartMitmStaticRequestDispatch() : Task.Run(() => DispatchRequestAfterHeadersAsync(), cancellationToken); - hpack.RequestDispatchChain = dispatchTask; request.Http2BeforeHandlerTask = dispatchTask; + if (originAdmitted == null) + { + hpack.RequestDispatchChain = dispatchTask; + } + else + { + // Admitted once dispatch queued/suppressed the HEADERS; when they are deferred to the + // buffered body's end, SendBody (or stream teardown) completes it instead. + hpack.RequestDispatchChain = originAdmitted.Task; + _ = dispatchTask.ContinueWith( + static (_, state) => + { + var r = (Request)state!; + if (!r.Http2HeadersDeferred) + r.Http2OriginAdmitted?.TrySetResult(true); + }, + request, CancellationToken.None, TaskContinuationOptions.ExecuteSynchronously, + TaskScheduler.Default); + } + pendingSynthetics.Track(dispatchTask); return false; } @@ -1460,10 +1493,9 @@ await RelayCompressedHeaderBlockAsync( headerRr.TrailingHeaders.AddHeader(header); } - // Drain queued response HEADERS/DATA so trailers cannot overtake them. - await connectionState.ClientWriteChain; - await lockedOutputWrite(() => SendTrailer(remoteSettings, frameHeader, frameHeaderBuffer, - hbStreamId, headerRr.TrailingHeaders, endStreamFlag, output)); + // Same ordered FIFO as the response HEADERS/DATA so trailers cannot overtake them. + QueueSendTrailer(connectionState, towardServer: false, outputWriteLock, remoteSettings, + frameHeader, frameHeaderBuffer, hbStreamId, headerRr.TrailingHeaders, endStreamFlag, output); return false; } } diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs index 13c84ac64..123373c09 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs @@ -2222,8 +2222,12 @@ await lockedOwnLegWrite(async () => if (isClient) connectionState.MultipartObservers.TryRemove(streamId, out _); connectionState.OriginRelayPool?.ReleaseStream(streamId); + var resetBeforeOriginHeaders = false; if (connectionState.TryTakeStream(streamId, out var resetStream)) { + resetBeforeOriginHeaders = isClient + && resetStream.SessionArgs?.HttpClient.Request is + { Http2HeadersDeferred: true, Http2HeadersQueued: false }; // RFC 8441: if the reset stream is an extended CONNECT tunnel, unblock the relay // that is reading from the inbound channel so it can shut down promptly. resetStream.InboundTunnelChannel?.Writer.TryComplete(); @@ -2345,6 +2349,13 @@ await lockedOwnLegWrite(async () => new ProxyHttpException( $"HTTP/2 peer stream reset code {errorCode}", null, args)); } + + // Client RST for a buffered request whose HEADERS were deferred to body end and never + // written: the origin has not seen the stream, so forwarding the RST would be an RST on + // an idle stream (connection PROTOCOL_ERROR). (Captured before finalize, which may + // reset the request object.) + if (resetBeforeOriginHeaders) + sendPacket = false; } if (endStream && rr == null) @@ -2440,15 +2451,36 @@ await lockedOwnLegWrite(async () => connectionState.Streams.TryGetValue(streamId, out var bodyStreamState); if (bodyStreamState?.IsExternalBridge != true) { - // Drain queued HEADERS/DATA so this SendBody cannot overtake them on the wire. - // SendBody takes outputWriteLock around the writes and drops it while waiting - // for WINDOW_UPDATE, so this frame loop is not parked on ReserveAsync. - if (isClient) - await connectionState.ServerWriteChain; + // HEADERS + DATA join the direction's ordered writer FIFO behind whatever is already + // queued (see SendBody). Draining the legacy write chain here was a no-op with the + // dedicated frame writers, which is how late HEADERS overtook queued blocks. + // + // Origin-bound requests are additionally admitted in stream-id order: this request's + // HEADERS are only encoded now, so a later stream may already have been sent. + // If an earlier request is still waiting for its body, send from a tracked + // background task; the frame loop must keep reading (that body is behind us). + var admitted = rr.Http2OriginAdmitted; + var admitAfter = rr.Http2AdmitAfter; + if (isClient && admitted != null && admitAfter is { IsCompleted: false } + && rr is Request deferredRequest) + { + pendingSynthetics.Track(SendBufferedRequestAfterAdmissionAsync(connectionState, + remoteSettings, deferredRequest, streamId, buffer.Length, outboundFlow, output, input, + outputWriteLock, admitAfter, admitted, logger, args, cancellationToken)); + } else - await connectionState.ClientWriteChain; - await SendBody(remoteSettings, rr, frameHeader, frameHeaderBuffer, buffer, outboundFlow, - output, cancellationToken, outputWriteLock); + { + try + { + await SendBody(connectionState, towardServer: isClient, remoteSettings, rr, + frameHeader, frameHeaderBuffer, buffer.Length, outboundFlow, output, + cancellationToken, outputWriteLock); + } + finally + { + admitted?.TrySetResult(true); + } + } } } diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Finalize.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Finalize.cs index f18736237..70e21b6fa 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Finalize.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Finalize.cs @@ -49,6 +49,10 @@ internal static async Task FinalizeStreamAsync(Http2StreamState state, return; } + // A buffered request reset or aborted before its body completed never reaches SendBody; release + // the stream-id ordering chain so later requests are not held back by a dead stream. + state.SessionArgs.HttpClient.Request.Http2OriginAdmitted?.TrySetResult(true); + try { var requestDispatch = state.SessionArgs.HttpClient.Request.Http2BeforeHandlerTask; diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs index 1376c835d..c39276b1d 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs @@ -61,6 +61,7 @@ private static void QueueSendHeader(Http2ConnectionState connectionState, bool t pushPromise ? Http2FrameType.PushPromise : Http2FrameType.Headers, endStream, rr.Priority.HasValue, block, settings.MaxFrameSize); connectionState.EnqueueWriteRented(towardServer, writeLock, output, framed.Array!, framed.Count); + rr.Http2HeadersQueued = true; } } @@ -164,11 +165,15 @@ private static void QueueRstStreamFrame(Http2ConnectionState connectionState, St /// HEADERS frame carrying no pseudo-headers, using the same persistent per-direction HPACK /// encoder as so the destination's dynamic table stays in sync /// regardless of whether trailers are actually present on a given message. + /// The block is encoded and enqueued on the direction's ordered FIFO under one + /// settings.Sync hold (same contract as ): a direct write + /// would let this block overtake earlier-encoded HEADERS still queued on the dedicated writer, + /// and the peer's HPACK decoder would desynchronize (COMPRESSION_ERROR). /// - internal static ValueTask SendTrailer(Http2Settings settings, Http2FrameHeader frameHeader, + internal static void QueueSendTrailer(Http2ConnectionState connectionState, bool towardServer, + SemaphoreSlim writeLock, Http2Settings settings, Http2FrameHeader frameHeader, byte[] frameHeaderBuffer, int streamId, HeaderCollection trailingHeaders, bool endStream, Stream output) { - ReadOnlyMemory block; lock (settings.Sync) { var encoder = settings.Encoder; @@ -200,12 +205,11 @@ internal static ValueTask SendTrailer(Http2Settings settings, Http2FrameHeader f } writer.Flush(); - // Encode scratch is reused; copy before releasing the HPACK lock. - block = GetMemoryStreamMemory(ms).ToArray(); + // RentFramedHeaderBlock copies out of the shared encode scratch before the lock is released. + var framed = RentFramedHeaderBlock(frameHeader, frameHeaderBuffer, streamId, Http2FrameType.Headers, + endStream, false, GetMemoryStreamMemory(ms), settings.MaxFrameSize); + connectionState.EnqueueWriteRented(towardServer, writeLock, output, framed.Array!, framed.Count); } - - return WriteHeaderBlockAsync(frameHeader, frameHeaderBuffer, streamId, Http2FrameType.Headers, - endStream, false, block, settings.MaxFrameSize, output); } private static ReadOnlyMemory GetMemoryStreamMemory(MemoryStream ms) @@ -364,84 +368,88 @@ private static async ValueTask WriteHeaderBlockMultiAsync(Http2FrameHeader frame } while (pos < data.Length); } - internal static async ValueTask SendBody(Http2Settings settings, RequestResponseBase rr, Http2FrameHeader frameHeader, // NOSONAR S107 -- Frame-writing state is kept explicit for this low-level helper. - byte[] frameHeaderBuffer, byte[] buffer, Http2FlowController flow, Stream output, - CancellationToken cancellationToken, SemaphoreSlim? writeLock = null) + /// + /// Sends a message whose body the handler buffered (GetRequestBody / GetResponseBody): HEADERS + /// (unless dispatch already queued them) followed by the DATA frames. + /// Both go through the direction's ordered writer FIFO ( / + /// ), never a direct socket write. These HEADERS are encoded late, + /// after the frame loop has already encoded and queued HEADERS for other streams. A direct + /// write here landed on the wire ahead of those queued blocks although it was encoded after + /// them, so the peer's HPACK decoder desynchronized (COMPRESSION_ERROR / illegal index), and a + /// DATA frame could precede its own HEADERS. Awaiting the legacy write chain does not help: the + /// dedicated frame writers never feed it. The FIFO also means no write lock is held while + /// waiting for flow-control credit. + /// + internal static async ValueTask SendBody(Http2ConnectionState connectionState, bool towardServer, // NOSONAR S107 -- Frame-writing state is kept explicit for this low-level helper. + Http2Settings settings, RequestResponseBase rr, Http2FrameHeader frameHeader, + byte[] frameHeaderBuffer, int maxDataFrameSize, Http2FlowController flow, Stream output, + CancellationToken cancellationToken, SemaphoreSlim writeLock) { - // When writeLock is set, this method owns it. Credit waits must not hold it: the other - // direction's frame loop needs the same lock to write receive-credit WINDOW_UPDATE, and - // that loop is also what reads the WINDOW_UPDATE that would unblock this reserve. - // Holding the lock across ReserveAsync stalls both and hits ReservationTimeout (60s). - // The common path (TryReserve succeeds) keeps HEADERS + DATA under one lock acquire. - var lockHeld = false; - - async ValueTask EnsureLockAsync() - { - if (writeLock == null || lockHeld) - return; + var body = rr.CompressBodyAndUpdateContentLength(); + var hasBody = rr.HasBody && rr.IsBodyRead; + if (hasBody && body == null) + throw new InvalidOperationException("An HTTP/2 body was marked as read but is unavailable."); - await writeLock.WaitAsync(cancellationToken).ConfigureAwait(false); - lockHeld = true; - } + // Dispatch may already have queued HEADERS. Encoding them again makes the peer decode the + // priority prefix as HPACK (COMPRESSION_ERROR) or reject the second block (PROTOCOL_ERROR). + var streamId = frameHeader.StreamId; + if (!rr.Http2HeadersQueued) + QueueSendHeader(connectionState, towardServer, writeLock, settings, frameHeader, + frameHeaderBuffer, rr, endStream: !hasBody, output, pushPromise: false); - void ReleaseLock() - { - if (writeLock == null || !lockHeld) - return; + if (!hasBody) + return; - writeLock.Release(); - lockHeld = false; - } + var maxFrameSize = settings.MaxFrameSize > 0 + ? Math.Min(maxDataFrameSize, settings.MaxFrameSize) + : maxDataFrameSize; + await QueueSendData(connectionState, towardServer, writeLock, streamId, body!, endStream: true, + maxFrameSize, flow, output, cancellationToken).ConfigureAwait(false); + } + /// + /// Sends a buffered request once every earlier request on the connection has been admitted, so the + /// origin sees HEADERS in increasing stream-id order (RFC 9113 §5.1.1: a lower id after a higher + /// one is a connection PROTOCOL_ERROR). Runs off the frame loop: the frame that completes the + /// earlier request's body may sit behind this stream's END_STREAM, so the loop must never wait here. + /// Always completes so later requests are never held back. + /// + internal static async Task SendBufferedRequestAfterAdmissionAsync(Http2ConnectionState connectionState, // NOSONAR S107 -- Frame-writing state is kept explicit for this low-level helper. + Http2Settings settings, Request request, int streamId, int maxDataFrameSize, Http2FlowController flow, + Stream serverOutput, Stream clientStream, SemaphoreSlim serverWriteLock, Task admitAfter, + TaskCompletionSource admitted, ILogger logger, SessionEventArgs? args, + CancellationToken cancellationToken) + { try { - var body = rr.CompressBodyAndUpdateContentLength(); - await EnsureLockAsync().ConfigureAwait(false); - await SendHeader(settings, frameHeader, frameHeaderBuffer, rr, !(rr.HasBody && rr.IsBodyRead), output, - false); - - if (rr.HasBody && rr.IsBodyRead) + try { - if (body == null) - throw new InvalidOperationException("An HTTP/2 body was marked as read but is unavailable."); - - int streamId = frameHeader.StreamId; - int pos = 0; - while (pos < body.Length) - { - int bodyFrameLength = Math.Min(buffer.Length, body.Length - pos); - Buffer.BlockCopy(body, pos, buffer, 0, bodyFrameLength); - pos += bodyFrameLength; - - if (writeLock != null) - { - if (!flow.TryReserve(streamId, bodyFrameLength)) - { - ReleaseLock(); - await flow.ReserveAsync(streamId, bodyFrameLength, cancellationToken) - .ConfigureAwait(false); - await EnsureLockAsync().ConfigureAwait(false); - } - } - else - { - await flow.ReserveAsync(streamId, bodyFrameLength, cancellationToken) - .ConfigureAwait(false); - } + await admitAfter.WaitAsync(cancellationToken).ConfigureAwait(false); + } + catch (Exception ex) when (ex is not OperationCanceledException || !cancellationToken.IsCancellationRequested) + { + // The earlier request failing is its own problem; this one is still ordered after it. + } - frameHeader.Length = bodyFrameLength; - frameHeader.Type = Http2FrameType.Data; - frameHeader.Flags = pos < body.Length ? (Http2FrameFlag)0 : Http2FrameFlag.EndStream; + if (!connectionState.Streams.ContainsKey(streamId)) + return; // reset or closed while waiting: nothing to send - frameHeader.CopyToBuffer(frameHeaderBuffer); - await WriteTwoAsync(output, frameHeaderBuffer.AsMemory(0, 9), - buffer.AsMemory(0, bodyFrameLength), cancellationToken); - } - } + await SendBody(connectionState, towardServer: true, settings, request, + new Http2FrameHeader { StreamId = streamId }, new byte[9], maxDataFrameSize, flow, serverOutput, + cancellationToken, serverWriteLock).ConfigureAwait(false); + } + catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested) + { + // connection is going away + } + catch (Exception ex) + { + ReportException(logger, new ProxyHttpException("HTTP/2 buffered request send failed", ex, args)); + QueueRstStreamFrame(connectionState, clientStream, streamId, Http2ErrorCode.InternalError); } finally { - ReleaseLock(); + admitted.TrySetResult(true); } } diff --git a/src/Titanium.Web.Proxy/Network/HttpWebClient.cs b/src/Titanium.Web.Proxy/Network/HttpWebClient.cs index db9ca91eb..8046cd4e4 100644 --- a/src/Titanium.Web.Proxy/Network/HttpWebClient.cs +++ b/src/Titanium.Web.Proxy/Network/HttpWebClient.cs @@ -435,9 +435,14 @@ private async ValueTask ReceiveResponseSlowAsync(ValueTask /// /// A status-line happens before any response bytes are committed - /// to the client. Replaying is the same rule as EOF-before-response. + /// to the client, so a replay is possible when the request is replayable (no body, or buffered). + /// Unlike EOF-before-response, the origin did answer (with leftover bytes of a desynced + /// keep-alive) and has very likely processed the request, so only idempotent GET/HEAD are + /// replayed: a POST/PATCH replay could be applied twice. /// - private bool CanRetryMalformedStatusLine() => !Request.HasBody || Request.IsBodyRead; + private bool CanRetryMalformedStatusLine() => + (!Request.HasBody || Request.IsBodyRead) + && Routing.StreamDestinationDispatch.IsIdempotentMethod(Request.Method); private static RetryableServerConnectionException MalformedStatusLine(FormatException ex) => new("Server returned a response that did not start with an HTTP status line.", ex); diff --git a/tests/Titanium.Web.Proxy.IntegrationTests/StaleKeepAliveTests.cs b/tests/Titanium.Web.Proxy.IntegrationTests/StaleKeepAliveTests.cs index 798f7f8db..90649ba4f 100644 --- a/tests/Titanium.Web.Proxy.IntegrationTests/StaleKeepAliveTests.cs +++ b/tests/Titanium.Web.Proxy.IntegrationTests/StaleKeepAliveTests.cs @@ -176,6 +176,69 @@ public async Task MalformedStatusOnReusedConnection_BodylessRequest_SucceedsViaR $"Expected a fresh upstream accept after the malformed status line; acceptCount={acceptCount}"); } + [TestMethod] + [Timeout(60 * 1000)] + public async Task MalformedStatusOnReusedConnection_PostRequest_IsNotReplayed() + { + using var testSuite = new TestSuite(); + var server = testSuite.GetServer(); + + var acceptCount = 0; + var postsSeen = 0; + + server.HandleTcpRequest(async context => + { + var n = Interlocked.Increment(ref acceptCount); + await DrainRequestHeaders(context); + + if (n == 1) + { + await context.Transport.Output.WriteAsync(MsgEncoding.GetBytes( + "HTTP/1.1 200 OK\r\nContent-Length: 2\r\nConnection: keep-alive\r\n\r\nok")); + + // Same socket, the POST: answer with bytes that are not an HTTP status line. + await DrainRequestHeaders(context); + Interlocked.Increment(ref postsSeen); + await context.Transport.Output.WriteAsync(MsgEncoding.GetBytes("NOTHTTP\r\n")); + await Task.Delay(500); + return; + } + + // A replay of the POST would land on a fresh connection. + Interlocked.Increment(ref postsSeen); + await context.Transport.Output.WriteAsync(MsgEncoding.GetBytes( + "HTTP/1.1 200 OK\r\nContent-Length: 2\r\nConnection: close\r\n\r\nok")); + }); + + var proxy = testSuite.GetReverseProxy(); + proxy.EnableConnectionPool = true; + proxy.BeforeRequest += (_, e) => + { + e.HttpClient.Request.Url = server.ListeningTcpUrl; + return Task.CompletedTask; + }; + + var client = testSuite.GetReverseProxyClient(); + var proxyUrl = new Uri($"http://localhost:{proxy.ProxyEndPoints[0].Port}/"); + + var first = await client.GetAsync(proxyUrl); + Assert.AreEqual(HttpStatusCode.OK, first.StatusCode); + + try + { + using var post = await client.PostAsync(proxyUrl, new StringContent("x")); + Assert.AreNotEqual(HttpStatusCode.OK, post.StatusCode); + } + catch (HttpRequestException) + { + // Connection torn down by the proxy is also an acceptable non-replay outcome. + } + + await Task.Delay(300); + Assert.AreEqual(1, acceptCount, "A POST must not be replayed on a fresh upstream connection."); + Assert.AreEqual(1, postsSeen, "The POST must reach the origin exactly once."); + } + private static async Task DrainRequestHeaders(ConnectionContext context) { var requestText = string.Empty; diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2BufferedSendOrderingTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2BufferedSendOrderingTests.cs new file mode 100644 index 000000000..a8124fbd0 --- /dev/null +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2BufferedSendOrderingTests.cs @@ -0,0 +1,246 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.Extensions.Logging.Abstractions; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Titanium.Web.Proxy.Extensions; +using Titanium.Web.Proxy.Http; +using Titanium.Web.Proxy.Http2; +using Titanium.Web.Proxy.Models; +using HpackDecoder = Titanium.Web.Proxy.Http2.Hpack.Decoder; + +namespace Titanium.Web.Proxy.UnitTests; + +/// +/// Regression coverage for the x.com failures seen only through the Inspector: bodies the handler +/// buffers (GetRequestBody / GetResponseBody) are sent late by SendBody. Those HEADERS used to be +/// encoded late but written straight to the socket, overtaking earlier-encoded blocks still queued on the +/// dedicated frame writer (HPACK COMPRESSION_ERROR), and a request could reach the origin after a +/// higher stream id (PROTOCOL_ERROR). +/// +[TestClass] +public class Http2BufferedSendOrderingTests +{ + private sealed record Frame(byte Type, byte Flags, int StreamId, byte[] Payload); + + private sealed class Capture : Http2.Hpack.IHeaderListener + { + public void AddHeader(ByteString name, ByteString value, bool sensitive) + { + } + } + + private static List ParseFrames(byte[] wire) + { + var frames = new List(); + var i = 0; + while (i < wire.Length) + { + var len = (wire[i] << 16) | (wire[i + 1] << 8) | wire[i + 2]; + var streamId = ((wire[i + 5] & 0x7f) << 24) | (wire[i + 6] << 16) | (wire[i + 7] << 8) | wire[i + 8]; + frames.Add(new Frame(wire[i + 3], wire[i + 4], streamId, wire.AsSpan(i + 9, len).ToArray())); + i += 9 + len; + } + + return frames; + } + + private static Request NewBufferedPost(string path, string body) + { + var request = new Request + { + Method = "POST", + HttpVersion = HttpHeader.Version20, + IsHttps = true, + Authority = "x.com".GetByteString(), + RequestUriString = path, + Body = Encoding.ASCII.GetBytes(body), + IsBodyRead = true + }; + request.Headers.AddHeader("content-type", "application/json"); + request.Headers.AddHeader("x-path", path); + return request; + } + + [TestMethod] + public async Task SendBody_ConcurrentBufferedResponses_DecodeWithStrictHpackDecoderInWireOrder() + { + const int count = 60; + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + var settings = new Http2Settings { MaxFrameSize = 16384 }; + var flow = new Http2FlowController(); + using var ms = new MemoryStream(); + using var gate = new SemaphoreSlim(1, 1); + + await using (var writer = new Http2FrameWriter(ms, gate)) + { + state.ClientFrameWriter = writer; + var sends = Enumerable.Range(0, count).Select(n => Task.Run(async () => + { + var streamId = 1 + n * 2; + flow.RegisterStream(streamId); + var response = new Response + { + HttpVersion = HttpHeader.Version20, + StatusCode = 200, + Body = Encoding.ASCII.GetBytes("body-" + n), + IsBodyRead = true + }; + // Distinct values force dynamic-table inserts, so a mis-ordered block cannot decode. + response.Headers.AddHeader("x-unique", "value-" + n); + response.Headers.AddHeader("set-cookie", new string((char)('a' + n % 26), 200 + n)); + await Http2Helper.SendBody(state, towardServer: false, settings, response, + new Http2FrameHeader { StreamId = streamId }, new byte[9], 16384, flow, ms, + CancellationToken.None, gate); + })).ToArray(); + await Task.WhenAll(sends); + } + + var frames = ParseFrames(ms.ToArray()); + var decoder = new HpackDecoder(1024 * 1024, 4096); + var opened = new HashSet(); + foreach (var frame in frames) + { + if (frame.Type == (byte)Http2FrameType.Headers) + { + var skip = (frame.Flags & 0x20) != 0 ? 5 : 0; + try + { + decoder.Decode(frame.Payload.AsSpan(skip).ToArray(), new Capture()); + decoder.EndHeaderBlock(); + } + catch (Exception ex) + { + Assert.Fail($"HEADERS for stream {frame.StreamId} did not decode in wire order: {ex.Message}"); + } + + opened.Add(frame.StreamId); + } + else if (frame.Type == (byte)Http2FrameType.Data) + { + Assert.IsTrue(opened.Contains(frame.StreamId), + $"DATA for stream {frame.StreamId} preceded its HEADERS."); + } + } + + Assert.AreEqual(count, opened.Count); + } + + [TestMethod] + public async Task SendBufferedRequestAfterAdmission_LaterStreamStartedFirst_ReachesWireAfterEarlierStream() + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + var settings = new Http2Settings { MaxFrameSize = 16384 }; + var flow = new Http2FlowController(); + flow.RegisterStream(1); + flow.RegisterStream(3); + state.Streams[1] = new Http2StreamState(1); + state.Streams[3] = new Http2StreamState(3); + using var origin = new MemoryStream(); + using var client = new MemoryStream(); + using var gate = new SemaphoreSlim(1, 1); + + var earlierAdmitted = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + var laterAdmitted = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + + await using (var writer = new Http2FrameWriter(origin, gate)) + { + state.ServerFrameWriter = writer; + + // Stream 3's body completed first, but stream 1 (lower id) is still waiting for its body. + var later = Http2Helper.SendBufferedRequestAfterAdmissionAsync(state, settings, + NewBufferedPost("/later", "three"), 3, 16384, flow, origin, client, gate, earlierAdmitted.Task, + laterAdmitted, NullLogger.Instance, null, CancellationToken.None); + Assert.IsFalse(later.IsCompleted); + Assert.AreEqual(0, origin.Length, "Stream 3 must not reach the origin before stream 1."); + + var earlierAfter = Task.CompletedTask; + var earlier = Http2Helper.SendBufferedRequestAfterAdmissionAsync(state, settings, + NewBufferedPost("/earlier", "one"), 1, 16384, flow, origin, client, gate, earlierAfter, + earlierAdmitted, NullLogger.Instance, null, CancellationToken.None); + + await Task.WhenAll(earlier, later).WaitAsync(TimeSpan.FromSeconds(5)); + } + + Assert.IsTrue(earlierAdmitted.Task.IsCompletedSuccessfully); + Assert.IsTrue(laterAdmitted.Task.IsCompletedSuccessfully); + + var streamOrder = ParseFrames(origin.ToArray()) + .Where(f => f.Type == (byte)Http2FrameType.Headers) + .Select(f => f.StreamId) + .ToArray(); + CollectionAssert.AreEqual(new[] { 1, 3 }, streamOrder, + "Origin must see HEADERS in increasing stream-id order."); + + var frames = ParseFrames(origin.ToArray()); + var decoder = new HpackDecoder(1024 * 1024, 4096); + foreach (var headers in frames.Where(f => f.Type == (byte)Http2FrameType.Headers)) + { + decoder.Decode(headers.Payload, new Capture()); + decoder.EndHeaderBlock(); + } + } + + [TestMethod] + public async Task SendBufferedRequestAfterAdmission_StreamResetWhileWaiting_SendsNothingAndAdmits() + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + var flow = new Http2FlowController(); + flow.RegisterStream(5); + using var origin = new MemoryStream(); + using var client = new MemoryStream(); + using var gate = new SemaphoreSlim(1, 1); + var waitFor = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + var admitted = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + + await using (var writer = new Http2FrameWriter(origin, gate)) + { + state.ServerFrameWriter = writer; + // Stream 5 is not in state.Streams: it was reset / finalized while queued behind stream 1. + var send = Http2Helper.SendBufferedRequestAfterAdmissionAsync(state, new Http2Settings(), + NewBufferedPost("/gone", "x"), 5, 16384, flow, origin, client, gate, waitFor.Task, admitted, + NullLogger.Instance, null, CancellationToken.None); + waitFor.SetResult(true); + await send.WaitAsync(TimeSpan.FromSeconds(5)); + } + + Assert.AreEqual(0, origin.Length); + Assert.IsTrue(admitted.Task.IsCompletedSuccessfully, "Later requests must never be held by a dead stream."); + } + + [TestMethod] + public async Task SendBufferedRequestAfterAdmission_Cancelled_StillAdmits() + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + var flow = new Http2FlowController(); + flow.RegisterStream(7); + state.Streams[7] = new Http2StreamState(7); + using var origin = new MemoryStream(); + using var client = new MemoryStream(); + using var gate = new SemaphoreSlim(1, 1); + var neverCompletes = new TaskCompletionSource(); + var admitted = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + using var teardown = new CancellationTokenSource(); + + await using (var writer = new Http2FrameWriter(origin, gate)) + { + state.ServerFrameWriter = writer; + var send = Http2Helper.SendBufferedRequestAfterAdmissionAsync(state, new Http2Settings(), + NewBufferedPost("/cancel", "x"), 7, 16384, flow, origin, client, gate, neverCompletes.Task, admitted, + NullLogger.Instance, null, teardown.Token); + teardown.Cancel(); + await send.WaitAsync(TimeSpan.FromSeconds(5)); + } + + Assert.AreEqual(0, origin.Length); + Assert.IsTrue(admitted.Task.IsCompletedSuccessfully); + } +} diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2HelperFrameWriterTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2HelperFrameWriterTests.cs index 648ba80a7..fef88477c 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/Http2HelperFrameWriterTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2HelperFrameWriterTests.cs @@ -250,7 +250,7 @@ public async Task SendTrailer_WritesHeadersWithoutPseudoHeaders() var trailers = new HeaderCollection(); trailers.AddHeader("x-trailer", "done"); - await Http2Helper.SendTrailer(settings, header, buf, 1, trailers, endStream: true, ms); + await Http2QueuedSend.SendTrailer(settings, header, buf, 1, trailers, endStream: true, ms); var wire = ms.ToArray(); Assert.IsTrue(wire.Length > 9); @@ -269,7 +269,7 @@ public async Task SendTrailer_MixedCaseAndTableSizeChanges_EmitsContinuationFram var trailers = new HeaderCollection(); trailers.AddHeader("X-Long-Trailer", new string('z', 100)); - await Http2Helper.SendTrailer(settings, header, buf, 11, trailers, endStream: false, ms); + await Http2QueuedSend.SendTrailer(settings, header, buf, 11, trailers, endStream: false, ms); var wire = ms.ToArray(); Assert.AreEqual((byte)Http2FrameType.Headers, wire[3]); @@ -358,7 +358,7 @@ public async Task SendBody_WithoutBody_EndsStreamOnHeaders() var flow = new Http2FlowController(); flow.RegisterStream(3); - await Http2Helper.SendBody(new Http2Settings(), response, header, buf, new byte[4], flow, ms, + await Http2QueuedSend.SendBody(new Http2Settings(), response, header, buf, 4, flow, ms, CancellationToken.None); var wire = ms.ToArray(); @@ -383,7 +383,7 @@ public async Task SendBody_BufferSmallerThanBody_WritesMultipleDataFrames() var flow = new Http2FlowController(); flow.RegisterStream(7); - await Http2Helper.SendBody(new Http2Settings(), response, header, buf, new byte[4], flow, ms, + await Http2QueuedSend.SendBody(new Http2Settings(), response, header, buf, 4, flow, ms, CancellationToken.None); var wire = ms.ToArray(); @@ -422,9 +422,13 @@ public async Task SendBody_DropsWriteLockWhileWaitingForWindowCredit() flow.OnInitialWindowSizeChanged(0); flow.RegisterStream(3); using var writeLock = new SemaphoreSlim(1, 1); + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + await using var writer = new Http2FrameWriter(ms, writeLock); + state.ServerFrameWriter = writer; - var send = Http2Helper.SendBody(new Http2Settings(), response, header, buf, new byte[4], flow, ms, - CancellationToken.None, writeLock).AsTask(); + var send = Http2Helper.SendBody(state, towardServer: true, new Http2Settings(), response, header, buf, 4, + flow, ms, CancellationToken.None, writeLock).AsTask(); // Headers must already be on the wire, the send still blocked, and the lock free. // Acquiring the lock before SendBody starts would pass even if the wait held the lock. diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2HpackSequenceTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2HpackSequenceTests.cs new file mode 100644 index 000000000..50850fbff --- /dev/null +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2HpackSequenceTests.cs @@ -0,0 +1,103 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Threading.Tasks; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Titanium.Web.Proxy.Extensions; +using Titanium.Web.Proxy.Http; +using Titanium.Web.Proxy.Http2; +using Titanium.Web.Proxy.Models; +using HpackDecoder = Titanium.Web.Proxy.Http2.Hpack.Decoder; + +namespace Titanium.Web.Proxy.UnitTests; + +/// +/// Sequence round trip: many browser-shaped requests through the real SendHeader encoder, +/// decoded by a strict HPACK decoder whose table matches the peer default (4096). +/// +[TestClass] +public class Http2HpackSequenceTests +{ + private sealed class Capture : Http2.Hpack.IHeaderListener + { + internal readonly List<(string Name, string Value)> Fields = new(); + + public void AddHeader(ByteString name, ByteString value, bool sensitive) => + Fields.Add((name.GetString(), value.GetString())); + } + + [TestMethod] + public async Task SendHeader_LongBrowserShapedSequence_DecodesIdentically() + { + var rng = new Random(12345); + var settings = new Http2Settings { MaxFrameSize = 16384 }; + var decoder = new HpackDecoder(1024 * 1024, 4096); + + var stableNames = new[] + { + "accept", "accept-encoding", "accept-language", "authorization", "cache-control", "content-type", + "origin", "priority", "referer", "sec-ch-ua", "sec-ch-ua-mobile", "sec-ch-ua-platform", + "sec-fetch-dest", "sec-fetch-mode", "sec-fetch-site", "user-agent", "x-csrf-token", + "x-twitter-active-user", "x-twitter-auth-type", "x-twitter-client-language", "x-client-uuid" + }; + + for (var n = 0; n < 400; n++) + { + var request = new Request + { + Method = rng.Next(4) == 0 ? "POST" : "GET", + HttpVersion = HttpHeader.Version20, + IsHttps = true, + Authority = "x.com".GetByteString(), + RequestUriString = "/i/api/graphql/" + rng.Next(40) + "/Op" + rng.Next(25), + Priority = rng.Next(3) == 0 ? 0x80_00_00_00_dbL : 0xdbL + }; + + foreach (var name in stableNames) + request.Headers.AddHeader(name, "value-of-" + name + "-" + (rng.Next(6) == 0 ? rng.Next(5) : 0)); + + // Large cookie that changes now and then, like x.com's session cookies. + var cookieSeed = rng.Next(8) == 0 ? rng.Next(1000) : 7; + request.Headers.AddHeader("cookie", new string((char)('a' + cookieSeed % 26), 1200 + cookieSeed % 700)); + for (var i = 0; i < 12; i++) + request.Headers.AddHeader("x-extra-" + i, "v" + rng.Next(3)); + request.Headers.AddHeader("x-client-transaction-id", Guid.NewGuid().ToString("N")); + + using var ms = new MemoryStream(); + var frame = new Http2FrameHeader { StreamId = 1 + n * 2 }; + await Http2Helper.SendHeader(settings, frame, new byte[9], request, endStream: true, ms, false); + + var wire = ms.ToArray(); + var len = (wire[0] << 16) | (wire[1] << 8) | wire[2]; + var flags = wire[4]; + Assert.AreNotEqual(0, flags & 0x4, "single HEADERS frame expected"); + var skip = (flags & 0x20) != 0 ? 5 : 0; + var block = new byte[len - skip]; + Buffer.BlockCopy(wire, 9 + skip, block, 0, block.Length); + + var capture = new Capture(); + try + { + decoder.Decode(block, capture); + } + catch (Exception ex) + { + Assert.Fail($"request {n}: decoder rejected block: {ex.Message}"); + } + + decoder.EndHeaderBlock(); + + var expected = new List<(string, string)>(); + foreach (var h in request.Headers) + expected.Add((h.Name.ToLowerInvariant(), h.Value)); + + var actual = capture.Fields.FindAll(f => !f.Name.StartsWith(':')); + Assert.AreEqual(expected.Count, actual.Count, $"request {n}: header count"); + for (var i = 0; i < expected.Count; i++) + { + Assert.AreEqual(expected[i].Item1, actual[i].Name, $"request {n} header {i} name"); + Assert.AreEqual(expected[i].Item2, actual[i].Value, $"request {n} header {i} value"); + } + } + } +} diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2OriginRelayPoolTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2OriginRelayPoolTests.cs index 25ed63254..880a0d753 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/Http2OriginRelayPoolTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2OriginRelayPoolTests.cs @@ -21,7 +21,10 @@ public class Http2OriginRelayPoolTests [TestMethod] public async Task AssignStreamAsync_OpensAdditionalLegs_WhenSoftCapExceeded() { + // Explicit small cap: the soft cap per leg is derived from MaxConcurrentStreamsPerConnection, whose + // default (1000) is too high for 20 streams to overflow the first leg. var limits = ProxyResourceLimits.Default + .WithMaxConcurrentStreamsPerConnection(16) .WithMaxOriginHttp2ConnectionsPerAuthority(4); var openCount = 0; diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2QueuedSend.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2QueuedSend.cs new file mode 100644 index 000000000..6b05992f5 --- /dev/null +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2QueuedSend.cs @@ -0,0 +1,45 @@ +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using Titanium.Web.Proxy.Http; +using Titanium.Web.Proxy.Http2; +using Titanium.Web.Proxy.Models; + +namespace Titanium.Web.Proxy.UnitTests; + +/// +/// Runs the queued (dedicated frame writer) / +/// against an in-memory stream and returns once the writer has +/// drained, so tests can assert on the exact wire bytes. +/// +internal static class Http2QueuedSend +{ + public static async Task SendBody(Http2Settings settings, RequestResponseBase rr, Http2FrameHeader header, + byte[] frameHeaderBuffer, int maxDataFrameSize, Http2FlowController flow, Stream output, + CancellationToken cancellationToken = default) + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + using var gate = new SemaphoreSlim(1, 1); + await using (var writer = new Http2FrameWriter(output, gate)) + { + state.ServerFrameWriter = writer; + await Http2Helper.SendBody(state, towardServer: true, settings, rr, header, frameHeaderBuffer, + maxDataFrameSize, flow, output, cancellationToken, gate); + } + } + + public static async Task SendTrailer(Http2Settings settings, Http2FrameHeader header, byte[] frameHeaderBuffer, + int streamId, HeaderCollection trailers, bool endStream, Stream output) + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + using var gate = new SemaphoreSlim(1, 1); + await using (var writer = new Http2FrameWriter(output, gate)) + { + state.ServerFrameWriter = writer; + Http2Helper.QueueSendTrailer(state, towardServer: true, gate, settings, header, frameHeaderBuffer, + streamId, trailers, endStream, output); + } + } +} diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2SyntheticFinalizeAndAuthUserPassTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2SyntheticFinalizeAndAuthUserPassTests.cs index 45795cc72..fde241347 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/Http2SyntheticFinalizeAndAuthUserPassTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2SyntheticFinalizeAndAuthUserPassTests.cs @@ -123,7 +123,7 @@ public async Task SendBody_WithBufferedBody_WritesHeadersAndDataFrames() }; response.IsBodyRead = true; - await Http2Helper.SendBody(settings, response, header, buf, new byte[16], flow, ms, + await Http2QueuedSend.SendBody(settings, response, header, buf, 16, flow, ms, CancellationToken.None); Assert.IsTrue(ms.Length > 9); diff --git a/tests/Titanium.Web.Proxy.UnitTests/SonarNewCodeCoverageTests.cs b/tests/Titanium.Web.Proxy.UnitTests/SonarNewCodeCoverageTests.cs index 67ef62e8a..011ec9039 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/SonarNewCodeCoverageTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/SonarNewCodeCoverageTests.cs @@ -180,7 +180,7 @@ public async Task SendHeaderTrailerBodyAndData_WriteExpectedFrames() using var trailers = new MemoryStream(); var trailing = new HeaderCollection(); trailing.AddHeader("ETag", "abc"); - await Http2Helper.SendTrailer(settings, header, buf, 3, trailing, endStream: true, trailers); + await Http2QueuedSend.SendTrailer(settings, header, buf, 3, trailing, endStream: true, trailers); Assert.IsTrue(trailers.Length > 9); var response = new Response @@ -191,7 +191,7 @@ public async Task SendHeaderTrailerBodyAndData_WriteExpectedFrames() response.Body = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }; response.IsBodyRead = true; using var body = new MemoryStream(); - await Http2Helper.SendBody(settings, response, header, buf, new byte[4], flow, body, CancellationToken.None); + await Http2QueuedSend.SendBody(settings, response, header, buf, 4, flow, body); Assert.IsTrue(body.Length > 9 + 8); using var data = new MemoryStream(); From ab5fbe0650e892fbff5b0906366d408132f38a29 Mon Sep 17 00:00:00 2001 From: github-actions <41898282+github-actions[bot]@users.noreply.github.com> Date: Wed, 30 Sep 2026 16:28:09 +0000 Subject: [PATCH 05/17] Update documentation --- ...um.Web.Proxy.Http.RequestResponseBase.html | 32 +++++++++---------- ...eb.Proxy.Options.ProxyProfileSettings.html | 2 +- ...Web.Proxy.Options.ProxyResourceLimits.html | 23 ++++++------- docs/index.json | 2 +- 4 files changed, 30 insertions(+), 29 deletions(-) diff --git a/docs/api/Titanium.Web.Proxy.Http.RequestResponseBase.html b/docs/api/Titanium.Web.Proxy.Http.RequestResponseBase.html index 745180aee..657ffc9e6 100644 --- a/docs/api/Titanium.Web.Proxy.Http.RequestResponseBase.html +++ b/docs/api/Titanium.Web.Proxy.Http.RequestResponseBase.html @@ -125,7 +125,7 @@

Properties Edit this page - View Source + View Source

Body

@@ -157,7 +157,7 @@
Property Value
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BodyInternal

@@ -188,7 +188,7 @@
Property Value
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BodyString

@@ -221,7 +221,7 @@
Property Value
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ContentEncoding

@@ -252,7 +252,7 @@
Property Value
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ContentLength

@@ -283,7 +283,7 @@
Property Value
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ContentType

@@ -314,7 +314,7 @@
Property Value
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Encoding

@@ -345,7 +345,7 @@
Property Value
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HasBody

@@ -376,7 +376,7 @@
Property Value
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HeaderText

@@ -407,7 +407,7 @@
Property Value
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Headers

@@ -438,7 +438,7 @@
Property Value
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HttpVersion

@@ -469,7 +469,7 @@
Property Value
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IsBodyRead

@@ -500,7 +500,7 @@
Property Value
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IsChunked

@@ -531,7 +531,7 @@
Property Value
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KeepBody

@@ -562,7 +562,7 @@
Property Value
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TrailingHeaders

@@ -612,7 +612,7 @@

Methods Edit this page - View Source + View Source

ToString()

diff --git a/docs/api/Titanium.Web.Proxy.Options.ProxyProfileSettings.html b/docs/api/Titanium.Web.Proxy.Options.ProxyProfileSettings.html index ccf1ff944..61532c401 100644 --- a/docs/api/Titanium.Web.Proxy.Options.ProxyProfileSettings.html +++ b/docs/api/Titanium.Web.Proxy.Options.ProxyProfileSettings.html @@ -567,7 +567,7 @@

Methods Edit this page - View Source + View Source

For(ProxyProfile)

diff --git a/docs/api/Titanium.Web.Proxy.Options.ProxyResourceLimits.html b/docs/api/Titanium.Web.Proxy.Options.ProxyResourceLimits.html index 9ab6585fe..fe7974958 100644 --- a/docs/api/Titanium.Web.Proxy.Options.ProxyResourceLimits.html +++ b/docs/api/Titanium.Web.Proxy.Options.ProxyResourceLimits.html @@ -175,16 +175,17 @@
Property Value
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Default

-

Today's shipped values, carried forward as the Balanced profile's starting point -per the plan's rollout section: this is not a behavior change for existing traffic. Limits -newly introduced by the hardening plan (header aggregate bytes, decompression ratio, -CONTINUATION frame count, reset budget, admission cap) are set high enough that no -browser-generated traffic should reach them; they are expected to move once the benchmark -project has real numbers behind them.

+

Today's shipped values, carried forward as the Balanced profile's starting point. +Header, decompression, CONTINUATION, and reset budgets stay high enough that ordinary +browser traffic does not trip them. MaxConcurrentStreamsPerConnection is 1000, +matching Chrome's own concurrent-stream setting: 256 reset later requests on a single +x.com connection (REFUSED_STREAM) while the same page succeeded with no proxy. +The check runs only when a stream is opened, so traffic under the old cap takes the same +DATA path. PublicFacing pins the cap back to 256.

MaxCertificateCacheEntries is the one deliberate exception to "unchanged for existing traffic": measurement showed process memory holding steady at ~100 MB @@ -723,7 +724,7 @@

Methods Edit this page - View Source + View Source

Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?)

@@ -854,7 +855,7 @@
Exceptions
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WithCertificateCacheBounds(int?, int?)

@@ -929,7 +930,7 @@
Exceptions
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WithMaxConcurrentStreamsPerConnection(int)

@@ -977,7 +978,7 @@
Returns
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WithMaxOriginHttp2ConnectionsPerAuthority(int)

diff --git a/docs/index.json b/docs/index.json index 421297d91..fe6a3c3b6 100644 --- a/docs/index.json +++ b/docs/index.json @@ -527,7 +527,7 @@ "api/Titanium.Web.Proxy.Options.ProxyResourceLimits.html": { "href": "api/Titanium.Web.Proxy.Options.ProxyResourceLimits.html", "title": "Class ProxyResourceLimits | Titanium Web Proxy", - "summary": "Class ProxyResourceLimits Immutable, validated snapshot of the resource bounds a peer can make the proxy allocate: header shape, body/decompression budgets, concurrency and abuse-rate ceilings, and pool / certificate-cache sizing. Constructed only through Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?), which validates every field up front, so an invalid limit is a construction-time exception rather than a runtime surprise discovered mid-connection. A limit that can legitimately be turned off is typed as nullable with null meaning \"disabled\" - an explicit state - rather than overloading 0 or a negative number to mean the same thing. Limits that must always be enforced because disabling them would leave the proxy itself exploitable (the concurrent-stream cap, the open-header-block frame bound) are non-nullable and always validated to be strictly positive. This type has no back-reference to ProxyServer and no mutable state after construction: it is meant to be handed down to subsystems by value, not looked up through a service locator or an ambient static, so the dependency graph among consumers stays acyclic per the plan's \"Constraints on the policy layer\" section. Inheritance object ProxyResourceLimits Inherited Members object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.ReferenceEquals(object, object) object.ToString() Namespace: Titanium.Web.Proxy.Options Assembly: Titanium.Web.Proxy.dll Syntax public sealed class ProxyResourceLimits Properties | Edit this page View Source ConnectionPoolingEnabled Whether upstream TCP connection pooling is enabled. Disabling pooling is an explicit choice represented by this flag, not by giving MaxCachedConnectionsPerHost a sentinel value that also has to be validated as \"not zero, not negative, unless it means disabled\". Declaration public bool ConnectionPoolingEnabled { get; } Property Value Type Description bool | Edit this page View Source Default Today's shipped values, carried forward as the Balanced profile's starting point per the plan's rollout section: this is not a behavior change for existing traffic. Limits newly introduced by the hardening plan (header aggregate bytes, decompression ratio, CONTINUATION frame count, reset budget, admission cap) are set high enough that no browser-generated traffic should reach them; they are expected to move once the benchmark project has real numbers behind them. MaxCertificateCacheEntries is the one deliberate exception to \"unchanged for existing traffic\": measurement showed process memory holding steady at ~100 MB above baseline after closing every browser tab and idling for minutes, tracking the number of distinct MITM'd hosts rather than any live connection or session count. Unbounded in-memory certificate retention is a defect, not a compatibility guarantee, so the shipped default now bounds it at 1024 entries (roughly 10 MB, comfortably above real single-session browsing) rather than leaving it unbounded like every other nullable limit here defaults to. Declaration public static ProxyResourceLimits Default { get; } Property Value Type Description ProxyResourceLimits | Edit this page View Source MaxCachedConnectionsPerHost Maximum pooled connections cached per remote host. Only meaningful when ConnectionPoolingEnabled is true; always validated as strictly positive regardless, so a future caller cannot re-introduce the \"0 spins forever holding the pool lock\" defect by flipping the flag without also fixing this value. Declaration public int MaxCachedConnectionsPerHost { get; } Property Value Type Description int | Edit this page View Source MaxCertificateCacheEntries Maximum number of generated leaf certificates held in the in-memory certificate cache. Each entry holds a full X509Certificate2 with its private key, so unlike most other limits in this type this one defends against unbounded memory growth from ordinary browsing (many distinct MITM'd hosts), not just against an adversarial peer. null disables the bound and is not the shipped default - see Default. Declaration public int? MaxCertificateCacheEntries { get; } Property Value Type Description int? | Edit this page View Source MaxCertificateDiskCacheEntries Maximum number of generated leaf certificate files retained in the on-disk cache (Certificates.CertificateManager.SaveFakeCertificates), pruned independently of MaxCertificateCacheEntries. Disk is far cheaper than the in-memory cache's live X509Certificate2 handles, and a warm disk cache avoids repeating expensive certificate generation across process restarts, so this bound is deliberately independent and typically much larger (or unbounded). null disables the bound. Declaration public int? MaxCertificateDiskCacheEntries { get; } Property Value Type Description int? | Edit this page View Source MaxConcurrentClients Maximum number of concurrently admitted client connections, checked by the admission gate at handler entry/exit rather than the delayed ClientConnectionCount. null disables global admission control. Declaration public int? MaxConcurrentClients { get; } Property Value Type Description int? | Edit this page View Source MaxConcurrentStreamsPerConnection Proxy-owned cap on concurrent HTTP/2 streams per connection. Always enforced: this is the single source of truth consolidating what were previously two independent mechanisms, and is also the value advertised to the origin in the relayed SETTINGS frame so the advertised and enforced values never disagree. Declaration public int MaxConcurrentStreamsPerConnection { get; } Property Value Type Description int | Edit this page View Source MaxDecodedBodyBytes Maximum cumulative decompressed body bytes produced for a single request or response. null disables the budget. Always checked alongside MaxDecompressionRatio, since a ratio alone cannot bound total memory for a small compressed input that expands enormously without also capping the output side. Declaration public long? MaxDecodedBodyBytes { get; } Property Value Type Description long? | Edit this page View Source MaxDecompressionRatio Maximum allowed ratio of decompressed to compressed bytes. null disables the ratio check (relying on MaxDecodedBodyBytes alone). Declaration public double? MaxDecompressionRatio { get; } Property Value Type Description double? | Edit this page View Source MaxEncodedBodyBytes Maximum cumulative compressed/on-wire body bytes read for a single request or response. null disables the budget. Declaration public long? MaxEncodedBodyBytes { get; } Property Value Type Description long? | Edit this page View Source MaxHeaderAggregateBytes Maximum aggregate size of all header fields in one request or response, in bytes. Declaration public long MaxHeaderAggregateBytes { get; } Property Value Type Description long | Edit this page View Source MaxHeaderCount Maximum number of header fields accepted in one request or response. Declaration public int MaxHeaderCount { get; } Property Value Type Description int | Edit this page View Source MaxHeaderLineBytes Maximum length of a single header line (request/status line or one header field), in bytes. Declaration public long MaxHeaderLineBytes { get; } Property Value Type Description long | Edit this page View Source MaxOpenHeaderBlockDuration Maximum wall-clock duration an HTTP/2 header block may stay open (from the initial HEADERS/PUSH_PROMISE frame sent without END_HEADERS through its terminating CONTINUATION), independent of MaxOpenHeaderBlockFrames. Bounds a slow CONTINUATION-trickle variant that stays under the frame-count cap by pacing itself, which a frame-count-only bound cannot catch on its own. Always enforced. Declaration public TimeSpan MaxOpenHeaderBlockDuration { get; } Property Value Type Description TimeSpan | Edit this page View Source MaxOpenHeaderBlockFrames Maximum number of CONTINUATION frames tolerated for a single open HTTP/2 header block, independent of the existing byte cap. Always enforced: zero-length CONTINUATION frames never trip a byte-based check, and only one header block may be open per connection direction, so an unbounded frame count also head-of-line blocks every other stream. Declaration public int MaxOpenHeaderBlockFrames { get; } Property Value Type Description int | Edit this page View Source MaxOriginHttp2ConnectionsPerAuthority Maximum number of concurrent origin HTTP/2 connections the proxy may open for one authority (host+port+scheme) when multiplexing streams from a single client connection (SocketsHttpHandler EnableMultipleHttp2Connections analog). Always at least 1. Declaration public int MaxOriginHttp2ConnectionsPerAuthority { get; } Property Value Type Description int | Edit this page View Source MaxPeerInitiatedIncompleteStreamResets Maximum number of peer-initiated resets of streams that never completed, per connection, before the proxy tears the connection down. Proxy-initiated resets (e.g. in response to a client cancellation) do not count. null disables the reset budget. Declaration public int? MaxPeerInitiatedIncompleteStreamResets { get; } Property Value Type Description int? Methods | Edit this page View Source Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?) Validates and constructs a ProxyResourceLimits snapshot. Every non-nullable bound must be strictly positive; every nullable bound, if supplied, must also be strictly positive (use null to disable rather than a sentinel number). Declaration public static ProxyResourceLimits Create(long maxHeaderLineBytes, int maxHeaderCount, long maxHeaderAggregateBytes, long? maxEncodedBodyBytes, long? maxDecodedBodyBytes, double? maxDecompressionRatio, int? maxConcurrentClients, int maxConcurrentStreamsPerConnection, int? maxPeerInitiatedIncompleteStreamResets, int maxOpenHeaderBlockFrames, TimeSpan maxOpenHeaderBlockDuration, bool connectionPoolingEnabled, int maxCachedConnectionsPerHost, int? maxCertificateCacheEntries) Parameters Type Name Description long maxHeaderLineBytes int maxHeaderCount long maxHeaderAggregateBytes long? maxEncodedBodyBytes long? maxDecodedBodyBytes double? maxDecompressionRatio int? maxConcurrentClients int maxConcurrentStreamsPerConnection int? maxPeerInitiatedIncompleteStreamResets int maxOpenHeaderBlockFrames TimeSpan maxOpenHeaderBlockDuration bool connectionPoolingEnabled int maxCachedConnectionsPerHost int? maxCertificateCacheEntries Returns Type Description ProxyResourceLimits Exceptions Type Condition ArgumentOutOfRangeException A supplied value is zero or negative. | Edit this page View Source WithCertificateCacheBounds(int?, int?) Returns a copy of this instance with MaxCertificateCacheEntries and MaxCertificateDiskCacheEntries replaced, leaving every other limit unchanged. Added instead of extending Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?) - which is public API already shipped with a fixed parameter list - so that adding the independent disk-cache bound could not be a breaking change for existing callers. Declaration public ProxyResourceLimits WithCertificateCacheBounds(int? maxCertificateCacheEntries, int? maxCertificateDiskCacheEntries) Parameters Type Name Description int? maxCertificateCacheEntries See MaxCertificateCacheEntries. null disables the bound. int? maxCertificateDiskCacheEntries See MaxCertificateDiskCacheEntries. null disables the bound. Returns Type Description ProxyResourceLimits Exceptions Type Condition ArgumentOutOfRangeException A supplied value is zero or negative. | Edit this page View Source WithMaxConcurrentStreamsPerConnection(int) Returns a copy with MaxConcurrentStreamsPerConnection replaced. Declaration public ProxyResourceLimits WithMaxConcurrentStreamsPerConnection(int maxConcurrentStreamsPerConnection) Parameters Type Name Description int maxConcurrentStreamsPerConnection Returns Type Description ProxyResourceLimits | Edit this page View Source WithMaxOriginHttp2ConnectionsPerAuthority(int) Returns a copy with MaxOriginHttp2ConnectionsPerAuthority replaced. Declaration public ProxyResourceLimits WithMaxOriginHttp2ConnectionsPerAuthority(int maxOriginHttp2ConnectionsPerAuthority) Parameters Type Name Description int maxOriginHttp2ConnectionsPerAuthority Returns Type Description ProxyResourceLimits" + "summary": "Class ProxyResourceLimits Immutable, validated snapshot of the resource bounds a peer can make the proxy allocate: header shape, body/decompression budgets, concurrency and abuse-rate ceilings, and pool / certificate-cache sizing. Constructed only through Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?), which validates every field up front, so an invalid limit is a construction-time exception rather than a runtime surprise discovered mid-connection. A limit that can legitimately be turned off is typed as nullable with null meaning \"disabled\" - an explicit state - rather than overloading 0 or a negative number to mean the same thing. Limits that must always be enforced because disabling them would leave the proxy itself exploitable (the concurrent-stream cap, the open-header-block frame bound) are non-nullable and always validated to be strictly positive. This type has no back-reference to ProxyServer and no mutable state after construction: it is meant to be handed down to subsystems by value, not looked up through a service locator or an ambient static, so the dependency graph among consumers stays acyclic per the plan's \"Constraints on the policy layer\" section. Inheritance object ProxyResourceLimits Inherited Members object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.ReferenceEquals(object, object) object.ToString() Namespace: Titanium.Web.Proxy.Options Assembly: Titanium.Web.Proxy.dll Syntax public sealed class ProxyResourceLimits Properties | Edit this page View Source ConnectionPoolingEnabled Whether upstream TCP connection pooling is enabled. Disabling pooling is an explicit choice represented by this flag, not by giving MaxCachedConnectionsPerHost a sentinel value that also has to be validated as \"not zero, not negative, unless it means disabled\". Declaration public bool ConnectionPoolingEnabled { get; } Property Value Type Description bool | Edit this page View Source Default Today's shipped values, carried forward as the Balanced profile's starting point. Header, decompression, CONTINUATION, and reset budgets stay high enough that ordinary browser traffic does not trip them. MaxConcurrentStreamsPerConnection is 1000, matching Chrome's own concurrent-stream setting: 256 reset later requests on a single x.com connection (REFUSED_STREAM) while the same page succeeded with no proxy. The check runs only when a stream is opened, so traffic under the old cap takes the same DATA path. PublicFacing pins the cap back to 256. MaxCertificateCacheEntries is the one deliberate exception to \"unchanged for existing traffic\": measurement showed process memory holding steady at ~100 MB above baseline after closing every browser tab and idling for minutes, tracking the number of distinct MITM'd hosts rather than any live connection or session count. Unbounded in-memory certificate retention is a defect, not a compatibility guarantee, so the shipped default now bounds it at 1024 entries (roughly 10 MB, comfortably above real single-session browsing) rather than leaving it unbounded like every other nullable limit here defaults to. Declaration public static ProxyResourceLimits Default { get; } Property Value Type Description ProxyResourceLimits | Edit this page View Source MaxCachedConnectionsPerHost Maximum pooled connections cached per remote host. Only meaningful when ConnectionPoolingEnabled is true; always validated as strictly positive regardless, so a future caller cannot re-introduce the \"0 spins forever holding the pool lock\" defect by flipping the flag without also fixing this value. Declaration public int MaxCachedConnectionsPerHost { get; } Property Value Type Description int | Edit this page View Source MaxCertificateCacheEntries Maximum number of generated leaf certificates held in the in-memory certificate cache. Each entry holds a full X509Certificate2 with its private key, so unlike most other limits in this type this one defends against unbounded memory growth from ordinary browsing (many distinct MITM'd hosts), not just against an adversarial peer. null disables the bound and is not the shipped default - see Default. Declaration public int? MaxCertificateCacheEntries { get; } Property Value Type Description int? | Edit this page View Source MaxCertificateDiskCacheEntries Maximum number of generated leaf certificate files retained in the on-disk cache (Certificates.CertificateManager.SaveFakeCertificates), pruned independently of MaxCertificateCacheEntries. Disk is far cheaper than the in-memory cache's live X509Certificate2 handles, and a warm disk cache avoids repeating expensive certificate generation across process restarts, so this bound is deliberately independent and typically much larger (or unbounded). null disables the bound. Declaration public int? MaxCertificateDiskCacheEntries { get; } Property Value Type Description int? | Edit this page View Source MaxConcurrentClients Maximum number of concurrently admitted client connections, checked by the admission gate at handler entry/exit rather than the delayed ClientConnectionCount. null disables global admission control. Declaration public int? MaxConcurrentClients { get; } Property Value Type Description int? | Edit this page View Source MaxConcurrentStreamsPerConnection Proxy-owned cap on concurrent HTTP/2 streams per connection. Always enforced: this is the single source of truth consolidating what were previously two independent mechanisms, and is also the value advertised to the origin in the relayed SETTINGS frame so the advertised and enforced values never disagree. Declaration public int MaxConcurrentStreamsPerConnection { get; } Property Value Type Description int | Edit this page View Source MaxDecodedBodyBytes Maximum cumulative decompressed body bytes produced for a single request or response. null disables the budget. Always checked alongside MaxDecompressionRatio, since a ratio alone cannot bound total memory for a small compressed input that expands enormously without also capping the output side. Declaration public long? MaxDecodedBodyBytes { get; } Property Value Type Description long? | Edit this page View Source MaxDecompressionRatio Maximum allowed ratio of decompressed to compressed bytes. null disables the ratio check (relying on MaxDecodedBodyBytes alone). Declaration public double? MaxDecompressionRatio { get; } Property Value Type Description double? | Edit this page View Source MaxEncodedBodyBytes Maximum cumulative compressed/on-wire body bytes read for a single request or response. null disables the budget. Declaration public long? MaxEncodedBodyBytes { get; } Property Value Type Description long? | Edit this page View Source MaxHeaderAggregateBytes Maximum aggregate size of all header fields in one request or response, in bytes. Declaration public long MaxHeaderAggregateBytes { get; } Property Value Type Description long | Edit this page View Source MaxHeaderCount Maximum number of header fields accepted in one request or response. Declaration public int MaxHeaderCount { get; } Property Value Type Description int | Edit this page View Source MaxHeaderLineBytes Maximum length of a single header line (request/status line or one header field), in bytes. Declaration public long MaxHeaderLineBytes { get; } Property Value Type Description long | Edit this page View Source MaxOpenHeaderBlockDuration Maximum wall-clock duration an HTTP/2 header block may stay open (from the initial HEADERS/PUSH_PROMISE frame sent without END_HEADERS through its terminating CONTINUATION), independent of MaxOpenHeaderBlockFrames. Bounds a slow CONTINUATION-trickle variant that stays under the frame-count cap by pacing itself, which a frame-count-only bound cannot catch on its own. Always enforced. Declaration public TimeSpan MaxOpenHeaderBlockDuration { get; } Property Value Type Description TimeSpan | Edit this page View Source MaxOpenHeaderBlockFrames Maximum number of CONTINUATION frames tolerated for a single open HTTP/2 header block, independent of the existing byte cap. Always enforced: zero-length CONTINUATION frames never trip a byte-based check, and only one header block may be open per connection direction, so an unbounded frame count also head-of-line blocks every other stream. Declaration public int MaxOpenHeaderBlockFrames { get; } Property Value Type Description int | Edit this page View Source MaxOriginHttp2ConnectionsPerAuthority Maximum number of concurrent origin HTTP/2 connections the proxy may open for one authority (host+port+scheme) when multiplexing streams from a single client connection (SocketsHttpHandler EnableMultipleHttp2Connections analog). Always at least 1. Declaration public int MaxOriginHttp2ConnectionsPerAuthority { get; } Property Value Type Description int | Edit this page View Source MaxPeerInitiatedIncompleteStreamResets Maximum number of peer-initiated resets of streams that never completed, per connection, before the proxy tears the connection down. Proxy-initiated resets (e.g. in response to a client cancellation) do not count. null disables the reset budget. Declaration public int? MaxPeerInitiatedIncompleteStreamResets { get; } Property Value Type Description int? Methods | Edit this page View Source Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?) Validates and constructs a ProxyResourceLimits snapshot. Every non-nullable bound must be strictly positive; every nullable bound, if supplied, must also be strictly positive (use null to disable rather than a sentinel number). Declaration public static ProxyResourceLimits Create(long maxHeaderLineBytes, int maxHeaderCount, long maxHeaderAggregateBytes, long? maxEncodedBodyBytes, long? maxDecodedBodyBytes, double? maxDecompressionRatio, int? maxConcurrentClients, int maxConcurrentStreamsPerConnection, int? maxPeerInitiatedIncompleteStreamResets, int maxOpenHeaderBlockFrames, TimeSpan maxOpenHeaderBlockDuration, bool connectionPoolingEnabled, int maxCachedConnectionsPerHost, int? maxCertificateCacheEntries) Parameters Type Name Description long maxHeaderLineBytes int maxHeaderCount long maxHeaderAggregateBytes long? maxEncodedBodyBytes long? maxDecodedBodyBytes double? maxDecompressionRatio int? maxConcurrentClients int maxConcurrentStreamsPerConnection int? maxPeerInitiatedIncompleteStreamResets int maxOpenHeaderBlockFrames TimeSpan maxOpenHeaderBlockDuration bool connectionPoolingEnabled int maxCachedConnectionsPerHost int? maxCertificateCacheEntries Returns Type Description ProxyResourceLimits Exceptions Type Condition ArgumentOutOfRangeException A supplied value is zero or negative. | Edit this page View Source WithCertificateCacheBounds(int?, int?) Returns a copy of this instance with MaxCertificateCacheEntries and MaxCertificateDiskCacheEntries replaced, leaving every other limit unchanged. Added instead of extending Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?) - which is public API already shipped with a fixed parameter list - so that adding the independent disk-cache bound could not be a breaking change for existing callers. Declaration public ProxyResourceLimits WithCertificateCacheBounds(int? maxCertificateCacheEntries, int? maxCertificateDiskCacheEntries) Parameters Type Name Description int? maxCertificateCacheEntries See MaxCertificateCacheEntries. null disables the bound. int? maxCertificateDiskCacheEntries See MaxCertificateDiskCacheEntries. null disables the bound. Returns Type Description ProxyResourceLimits Exceptions Type Condition ArgumentOutOfRangeException A supplied value is zero or negative. | Edit this page View Source WithMaxConcurrentStreamsPerConnection(int) Returns a copy with MaxConcurrentStreamsPerConnection replaced. Declaration public ProxyResourceLimits WithMaxConcurrentStreamsPerConnection(int maxConcurrentStreamsPerConnection) Parameters Type Name Description int maxConcurrentStreamsPerConnection Returns Type Description ProxyResourceLimits | Edit this page View Source WithMaxOriginHttp2ConnectionsPerAuthority(int) Returns a copy with MaxOriginHttp2ConnectionsPerAuthority replaced. Declaration public ProxyResourceLimits WithMaxOriginHttp2ConnectionsPerAuthority(int maxOriginHttp2ConnectionsPerAuthority) Parameters Type Name Description int maxOriginHttp2ConnectionsPerAuthority Returns Type Description ProxyResourceLimits" }, "api/Titanium.Web.Proxy.Options.ProxyTimeoutOptions.html": { "href": "api/Titanium.Web.Proxy.Options.ProxyTimeoutOptions.html", From 6ee93b28f104563bc6f72f419a7d47071b9afbdb Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 04:55:06 +0530 Subject: [PATCH 06/17] fix: harden direct and bridge arms (H2 ordering, bridges, H3, H1) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Phase 1 (direct H2): SendBody emits trailers after DATA; trailer paths no longer await the admission chain (deadlock) or enqueue before deferred HEADERS; response DATA waits on Http2BeforeHandlerTask; header-reject paths finalize streams; GOAWAY uses LastClientStreamId; TE: trailers allowed; TryReserve no longer auto-inserts; PendingWork observes faults. Phase 2 (bridges): QueueRstStreamFrame for error RSTs; drain request-body ArrayPool channels on RST; release H1→H2 StreamBodyWriter when BeforeResponse replaces the response; CR/LF/NUL hygiene at H2 decode and HeaderBuilder; H1→H2 Expect:100-continue synthetic; H2→H1 CL mismatch closes the pool socket; origin WINDOW_UPDATE overflow is FLOW_CONTROL_ERROR. Phase 3 (H3): Auto TCP fallback only when request not sent; StreamBodyWriter lease release if never started; GOAWAY keeps the control stream open; H2→H3 trailers complete the body channel and emit trailer HEADERS; first-HEADERS payloads returned; invalid :status is MESSAGE_ERROR; Alt-Svc walks entries. Phase 4 (H1): Http1ReplaySafety policy family (Enforce in PublicFacing, Observe in Balanced); EOF retry limited to idempotent methods; Connection token-list parsing; lite 1xx falls back without throwing. Tests: trailer wire order, TryReserve unknown stream. H2 throughput within noise. --- .../Handlers/H1TerminateFastForward.cs | 20 +++- .../Handlers/Http11ToHttp2BridgeHandler.cs | 27 +++++ .../Handlers/Http2ToHttp11BridgeHandler.cs | 46 ++++---- .../Handlers/Http2ToHttp3BridgeHandler.cs | 37 +++--- .../Handlers/RequestHandler.cs | 40 ++++--- src/Titanium.Web.Proxy/Http/HeaderBuilder.cs | 1 + .../Http/HttpHeaderHygiene.cs | 49 ++++++++ src/Titanium.Web.Proxy/Http/Response.cs | 62 +++++++++-- .../Http2/Http2FlowController.cs | 28 ++--- .../Http2/Http2Helper.Copy.Headers.cs | 49 ++++++-- .../Http2/Http2Helper.Copy.Relay.cs | 2 +- .../Http2/Http2Helper.Copy.cs | 52 ++++++--- .../Http2/Http2Helper.Hpack.cs | 12 +- .../Http2/Http2Helper.Send.cs | 76 ++++++++++--- .../Http2/Http2OriginConnection.cs | 19 +++- .../Http2/Http2PendingWork.cs | 27 ++++- .../Http3/Http3OriginBridge.Quic.cs | 105 +++++++++++------- .../Http3/Http3OriginClientSession.cs | 5 +- .../Network/HttpWebClient.cs | 11 +- .../Options/PolicyFamily.cs | 17 ++- .../Options/ProxyPolicyModes.cs | 9 +- .../Options/ProxyProfileSettings.cs | 6 +- src/Titanium.Web.Proxy/PublicAPI.Shipped.txt | 3 +- .../Http2BufferedSendOrderingTests.cs | 81 ++++++++++++++ .../SonarGateCoverageBumpTests.cs | 22 ++-- .../SonarNewCodeCoverageTests.cs | 13 ++- 26 files changed, 623 insertions(+), 196 deletions(-) create mode 100644 src/Titanium.Web.Proxy/Http/HttpHeaderHygiene.cs diff --git a/src/Titanium.Web.Proxy/Handlers/H1TerminateFastForward.cs b/src/Titanium.Web.Proxy/Handlers/H1TerminateFastForward.cs index 5d30d826c..a484e960b 100644 --- a/src/Titanium.Web.Proxy/Handlers/H1TerminateFastForward.cs +++ b/src/Titanium.Web.Proxy/Handlers/H1TerminateFastForward.cs @@ -21,6 +21,17 @@ namespace Titanium.Web.Proxy; +/// +/// Signals that H1 terminate-lite cannot finish this exchange (typically a 1xx interim response) +/// and the caller should fall through to the full session path without treating it as a failure. +/// +internal sealed class H1TerminateLiteFallbackException : Exception +{ + public H1TerminateLiteFallbackException(string message) : base(message) + { + } +} + public partial class ProxyServer { private static readonly Lazy H1TerminateLiteProcessId = new(() => 0); @@ -156,8 +167,10 @@ internal bool CanUseH1TerminateLite(ProxyEndPoint endPoint, Request request, boo var response = http.Response; if (response.StatusCode is >= 100 and <= 199) { - // 1xx needs the full session path's interim loop — close origin and signal fallback. - throw new InvalidOperationException("H1 terminate lite does not handle interim 1xx responses."); + // Full session path has the interim 1xx loop; keep the origin connection for it. + closeConnection = false; + throw new H1TerminateLiteFallbackException( + "H1 terminate lite does not handle interim 1xx responses."); } try @@ -351,7 +364,8 @@ await connection.Stream.CopyBodyAsync(response, false, clientStream, Transformat var response = http.Response; if (response.StatusCode is >= 100 and <= 199) { - throw new InvalidOperationException( + closeConnection = false; + throw new H1TerminateLiteFallbackException( "H1 terminate MITM lite does not handle interim 1xx responses."); } diff --git a/src/Titanium.Web.Proxy/Handlers/Http11ToHttp2BridgeHandler.cs b/src/Titanium.Web.Proxy/Handlers/Http11ToHttp2BridgeHandler.cs index 02285ccc7..db8d22a63 100644 --- a/src/Titanium.Web.Proxy/Handlers/Http11ToHttp2BridgeHandler.cs +++ b/src/Titanium.Web.Proxy/Handlers/Http11ToHttp2BridgeHandler.cs @@ -552,6 +552,21 @@ private async Task EstablishHttp2OriginTcpConnectionAsync(S PrepareRequestForOrigin(request); + // Expect: 100-continue — H1 clients wait for 100 before sending the body. The h2 origin + // path sends HEADERS then immediately pumps the body, so without a synthetic 100 a + // strict client deadlocks. Mirror RequestHandler: synthetic 100 when CompatibilityMode + // is on or when Enable100ContinueBehaviour is off (the default). Strip Expect so the + // origin does not also wait. + if (request.ExpectContinue && !request.IsBodyRead + && (CompatibilityMode100Continue || !Enable100ContinueBehaviour)) + { + var continueBuilder = new HeaderBuilder(); + continueBuilder.WriteResponseLine(request.HttpVersion, 100, "Continue"); + continueBuilder.WriteHeaders(new HeaderCollection()); + await clientStream.WriteHeadersAsync(continueBuilder, cancellationToken); + request.Headers.RemoveHeader(KnownHeaders.Expect); + } + // Http2OriginConnection.SendAsync performs the whole request-send + response-receive round trip // in one call rather than exposing separate phases, so - unlike the HTTP/1.1 and h2-to-HTTP/1.1 // paths - RequestSentAt and ResponseHeadersReceivedAt below are necessarily approximated as the @@ -720,10 +735,22 @@ await clientStream.WriteBodyAsync(fastBody, response.IsChunked, MaybeInjectClientAltSvc(args); + // Capture before BeforeResponse: a user replacement clears StreamBodyWriter on the new + // Response object, and the origin concurrency gate / lease would never be released. + var originStreamBody = response.StreamBodyWriter; + if (!response.Locked) await OnBeforeResponse(args); response = args.HttpClient.Response; + if (!ReferenceEquals(response, exchange.Response) && originStreamBody != null) + { + exchange.Response.StreamBodyWriter = null; + // Drain and release origin resources; the replacement body is unrelated. + await originStreamBody(Stream.Null, cancellationToken); + originStreamBody = null; + } + if (response.Locked) { // The user replaced the response inside BeforeResponse - write it out generically. There is no diff --git a/src/Titanium.Web.Proxy/Handlers/Http2ToHttp11BridgeHandler.cs b/src/Titanium.Web.Proxy/Handlers/Http2ToHttp11BridgeHandler.cs index 9c2322e52..f64fc4e98 100644 --- a/src/Titanium.Web.Proxy/Handlers/Http2ToHttp11BridgeHandler.cs +++ b/src/Titanium.Web.Proxy/Handlers/Http2ToHttp11BridgeHandler.cs @@ -458,13 +458,17 @@ await sessionArgs.HttpClient.SendRequest(Enable100ContinueBehaviour, true, if (streamRequestBody && requestBodyChannel is { } bodyChannel) { var bodyWriter = new Helpers.BodyStreamWriter(connection.Stream, request.IsChunked); + long written = 0; await foreach (var chunk in bodyChannel.Reader.ReadAllAsync(cancellationToken)) { try { if (chunk.Length > 0) + { + written += chunk.Length; await bodyWriter.WriteAsync(chunk.Buffer.AsMemory(0, chunk.Length), cancellationToken); + } } finally { @@ -472,6 +476,18 @@ await bodyWriter.WriteAsync(chunk.Buffer.AsMemory(0, chunk.Length), } } + // Declared Content-Length must match bytes actually streamed; a short body would leave + // the H1 origin waiting and desync the pooled keep-alive socket. + if (!request.IsChunked && request.ContentLength >= 0 && written != request.ContentLength) + { + sessionArgs.HttpClient.CloseServerConnection = true; + Http2Helper.QueueRstStreamFrame(connectionState, clientStream, streamId, + Http2ErrorCode.ProtocolError); + throw new ProxyHttpException( + $"HTTP/2→HTTP/1.1 streamed body length {written} did not match Content-Length {request.ContentLength}.", + null, sessionArgs); + } + await bodyWriter.CompleteAsync( request.HasTrailingHeaders ? request.TrailingHeaders : null, cancellationToken); request.IsBodyReceived = true; @@ -765,16 +781,9 @@ await Http2Helper.EmitSyntheticResponseAsync(sessionArgs, streamId, connectionSt // round trip failed (e.g. the origin dropped the connection mid-body) - an // already-sent HEADERS frame cannot be replaced, so the best this can do is tell the // client the stream ended abnormally instead of silently truncating the body. - await connectionState.ClientWriteLock.WaitAsync(CancellationToken.None); - try - { - await Http2Helper.SendRstStreamAsync(new Http2FrameHeader(), new byte[9], streamId, - Http2ErrorCode.InternalError, clientStream); - } - finally - { - connectionState.ClientWriteLock.Release(); - } + // Queue through the FIFO so RST cannot overtake still-queued HEADERS/DATA. + Http2Helper.QueueRstStreamFrame(connectionState, clientStream, streamId, + Http2ErrorCode.InternalError); } } catch (Exception clientErrorFrameEx) @@ -854,6 +863,8 @@ await Http2Helper.FinalizeStreamAsync(finalStreamState, // Build and send the WebSocket upgrade request toward the h1 origin. var request = sessionArgs.HttpClient.Request; + if (HttpHeaderHygiene.ContainsForbiddenDelimiter(request.RequestUri.PathAndQuery)) + throw new InvalidOperationException("Request path contains CR, LF, or NUL."); var wsKey = Convert.ToBase64String(RandomNumberGenerator.GetBytes(16)); var sb = new StringBuilder(); sb.Append($"GET {request.RequestUri.PathAndQuery} HTTP/1.1\r\n"); @@ -862,6 +873,8 @@ await Http2Helper.FinalizeStreamAsync(finalStreamState, var authorityStr = request.Host ?? (request.Authority.Length > 0 ? request.Authority.GetString() : null) ?? $"{remoteHostName}:{remotePort}"; + if (HttpHeaderHygiene.ContainsForbiddenDelimiter(authorityStr)) + throw new InvalidOperationException("Authority contains CR, LF, or NUL."); sb.Append($"Host: {authorityStr}\r\n"); sb.Append("Upgrade: websocket\r\n"); sb.Append("Connection: Upgrade\r\n"); @@ -878,6 +891,7 @@ await Http2Helper.FinalizeStreamAsync(finalStreamState, lname == "connection" || lname == "sec-websocket-key" || lname == "sec-websocket-version") continue; + HttpHeaderHygiene.ThrowIfForbidden(header.Name, header.Value); sb.Append($"{header.Name}: {header.Value}\r\n"); } @@ -1040,16 +1054,8 @@ await Http2Helper.EmitSyntheticResponseAsync(sessionArgs, ctx.StreamId, } else { - await ctx.ConnectionState.ClientWriteLock.WaitAsync(CancellationToken.None); - try - { - await Http2Helper.SendRstStreamAsync(new Http2FrameHeader(), new byte[9], - ctx.StreamId, Http2ErrorCode.InternalError, ctx.ClientStream); - } - finally - { - ctx.ConnectionState.ClientWriteLock.Release(); - } + Http2Helper.QueueRstStreamFrame(ctx.ConnectionState, ctx.ClientStream, + ctx.StreamId, Http2ErrorCode.InternalError); } } catch (Exception rstEx) diff --git a/src/Titanium.Web.Proxy/Handlers/Http2ToHttp3BridgeHandler.cs b/src/Titanium.Web.Proxy/Handlers/Http2ToHttp3BridgeHandler.cs index b5ebf358d..866148b64 100644 --- a/src/Titanium.Web.Proxy/Handlers/Http2ToHttp3BridgeHandler.cs +++ b/src/Titanium.Web.Proxy/Handlers/Http2ToHttp3BridgeHandler.cs @@ -14,6 +14,7 @@ using Titanium.Web.Proxy.Http; using Titanium.Web.Proxy.Http2; using Titanium.Web.Proxy.Http3; +using Titanium.Web.Proxy.Http3.Qpack; using Titanium.Web.Proxy.Logging; using Titanium.Web.Proxy.Models; using Titanium.Web.Proxy.StreamExtended.Network; @@ -270,6 +271,7 @@ private static void ConsolidateCookieHeaders(HeaderCollection headers) Func? copyRequestBody = null; if (requestBodyChannel != null && !sessionArgs.HttpClient.Request.IsBodyRead) { + var request = sessionArgs.HttpClient.Request; copyRequestBody = async (originStream, ct) => { await foreach (var chunk in requestBodyChannel.Reader.ReadAllAsync(ct)) @@ -286,7 +288,15 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, } } - sessionArgs.HttpClient.Request.IsBodyReceived = true; + if (request.HasTrailingHeaders) + { + var trailerBlock = QpackEncoder.Encode( + request.TrailingHeaders.Select(h => (h.Name, h.Value))); + await Http3Frame.WriteAsync(originStream, Http3FrameType.Headers, trailerBlock, ct, + completeWrites: true); + } + + request.IsBodyReceived = true; }; } @@ -375,18 +385,10 @@ await Http2Helper.EmitSyntheticResponseAsync( else { // Headers (and possibly part of the body) already reached the client before the - // origin round trip failed. Send RST_STREAM to signal abnormal termination. - await connectionState.ClientWriteLock.WaitAsync(CancellationToken.None); - try - { - await Http2Helper.SendRstStreamAsync( - new Http2FrameHeader(), new byte[9], - streamId, Http2ErrorCode.InternalError, clientStream); - } - finally - { - connectionState.ClientWriteLock.Release(); - } + // origin round trip failed. Queue RST through the FIFO so it cannot overtake + // still-queued HEADERS/DATA. + Http2Helper.QueueRstStreamFrame(connectionState, clientStream, streamId, + Http2ErrorCode.InternalError); } } catch @@ -404,6 +406,15 @@ await Http2Helper.SendRstStreamAsync( // concurrent RST_STREAM / GOAWAY finalization. if (connectionState.TryTakeStream(streamId, out var finalStreamState)) { + // Drain any leftover rented body buffers if the copy task never ran. + var bodyCh = finalStreamState.InboundRequestBodyChannel; + if (bodyCh != null) + { + bodyCh.Writer.TryComplete(); + while (bodyCh.Reader.TryRead(out var leftover)) + ArrayPool.Shared.Return(leftover.Buffer); + } + connectionState.ClientSendFlow.RemoveStream(streamId); connectionState.ServerSendFlow.RemoveStream(streamId); await Http2Helper.FinalizeStreamAsync( diff --git a/src/Titanium.Web.Proxy/Handlers/RequestHandler.cs b/src/Titanium.Web.Proxy/Handlers/RequestHandler.cs index 2d13b7e88..d1bc041b4 100644 --- a/src/Titanium.Web.Proxy/Handlers/RequestHandler.cs +++ b/src/Titanium.Web.Proxy/Handlers/RequestHandler.cs @@ -165,12 +165,19 @@ public partial class ProxyServer } preparedRequest.SetOriginalHeaders(); - var keepClient = await ForwardH1TerminateLiteAsync( - (TransparentBaseProxyEndPoint)endPoint, clientStream, preparedRequest, - cancellationToken); - if (!keepClient) - return; - continue; + try + { + var keepClient = await ForwardH1TerminateLiteAsync( + (TransparentBaseProxyEndPoint)endPoint, clientStream, preparedRequest, + cancellationToken); + if (!keepClient) + return; + continue; + } + catch (H1TerminateLiteFallbackException) + { + // 1xx (e.g. 103 Early Hints): fall through to the full session path. + } } // Gate failed after headers (e.g. body) — fall through with prepared request. @@ -488,14 +495,21 @@ public partial class ProxyServer && request.Authority.Equals(capturedRequestAuthority) && !args.HttpClient.Response.Locked) { - var keepClient = await ForwardH1TerminateSessionLiteAsync( - mitmTerminateEp, clientStream, args, requestToken); - args.IsClientResponseCommitted = true; - if (!keepClient) - return; + try + { + var keepClient = await ForwardH1TerminateSessionLiteAsync( + mitmTerminateEp, clientStream, args, requestToken); + args.IsClientResponseCommitted = true; + if (!keepClient) + return; - allowMitmUnchangedRecycle = true; - continue; + allowMitmUnchangedRecycle = true; + continue; + } + catch (H1TerminateLiteFallbackException) + { + // 1xx: fall through to the full session response path below. + } } // If prefetch task is available. diff --git a/src/Titanium.Web.Proxy/Http/HeaderBuilder.cs b/src/Titanium.Web.Proxy/Http/HeaderBuilder.cs index b21cd1a97..467530f70 100644 --- a/src/Titanium.Web.Proxy/Http/HeaderBuilder.cs +++ b/src/Titanium.Web.Proxy/Http/HeaderBuilder.cs @@ -162,6 +162,7 @@ private void WriteHeaderMaybeHostOverride(HttpHeader header, string? hostHeaderO public void WriteHeader(HttpHeader header) { + HttpHeaderHygiene.ThrowIfForbidden(header.NameData, header.ValueData); // NameData/ValueData are already ISO-8859-1 bytes — do not force string + GetBytes. Write(header.NameData); WriteAscii(": "); diff --git a/src/Titanium.Web.Proxy/Http/HttpHeaderHygiene.cs b/src/Titanium.Web.Proxy/Http/HttpHeaderHygiene.cs new file mode 100644 index 000000000..dabeea3ec --- /dev/null +++ b/src/Titanium.Web.Proxy/Http/HttpHeaderHygiene.cs @@ -0,0 +1,49 @@ +using System; +using System.Buffers; +using System.Runtime.CompilerServices; +using Titanium.Web.Proxy.Models; + +namespace Titanium.Web.Proxy.Http; + +/// +/// Rejects CR / LF / NUL in HTTP field names and values (RFC 9110 §5.5 / RFC 9113 §8.2.1). +/// Used wherever a value may be written onto an HTTP/1.1 wire (HeaderBuilder, bridges). +/// +internal static class HttpHeaderHygiene +{ + private static readonly SearchValues ForbiddenBytes = SearchValues.Create("\0\r\n"u8); + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public static bool ContainsForbiddenDelimiter(ReadOnlySpan span) => + span.IndexOfAny(ForbiddenBytes) >= 0; + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public static bool ContainsForbiddenDelimiter(string? value) + { + if (string.IsNullOrEmpty(value)) + return false; + foreach (var c in value) + { + if (c is '\0' or '\r' or '\n') + return true; + } + + return false; + } + + public static void ThrowIfForbidden(ByteString name, ByteString value) + { + if (ContainsForbiddenDelimiter(name.Span)) + throw new InvalidOperationException("HTTP header name contains CR, LF, or NUL."); + if (ContainsForbiddenDelimiter(value.Span)) + throw new InvalidOperationException("HTTP header value contains CR, LF, or NUL."); + } + + public static void ThrowIfForbidden(string name, string value) + { + if (ContainsForbiddenDelimiter(name)) + throw new InvalidOperationException("HTTP header name contains CR, LF, or NUL."); + if (ContainsForbiddenDelimiter(value)) + throw new InvalidOperationException("HTTP header value contains CR, LF, or NUL."); + } +} diff --git a/src/Titanium.Web.Proxy/Http/Response.cs b/src/Titanium.Web.Proxy/Http/Response.cs index 5fd8a35cc..cca1d8b16 100644 --- a/src/Titanium.Web.Proxy/Http/Response.cs +++ b/src/Titanium.Web.Proxy/Http/Response.cs @@ -115,22 +115,62 @@ public bool KeepAlive { get { - Headers.TryGetUniqueHeader(KnownHeaders.Connection, out var connectionHeader); + // Connection is a comma-separated token list (RFC 9110 §7.6.1). "close" wins; + // duplicates / "close, te" must not keep the socket in the pool. + var close = false; + var keepAlive = false; + if (Headers.Headers.TryGetValue(KnownHeaders.Connection.String, out var unique)) + ClassifyConnectionTokens(unique.ValueData.Span, ref close, ref keepAlive); + else if (Headers.NonUniqueHeaders.TryGetValue(KnownHeaders.Connection.String, out var list)) + { + foreach (var header in list) + ClassifyConnectionTokens(header.ValueData.Span, ref close, ref keepAlive); + } - // HTTP/1.0 is non-persistent by default: the connection is only reusable when the - // response explicitly opts in with "Connection: keep-alive". Treating a plain HTTP/1.0 - // response as keep-alive would let us pool a connection the server is about to close. if (HttpVersion == HttpHeader.Version10) - return connectionHeader != null - && connectionHeader.ValueData.EqualsIgnoreCaseAscii(KnownHeaders.ConnectionKeepAlive.String8); + return keepAlive && !close; - // HTTP/1.1 (and HTTP/2) are persistent by default unless the response asks to close. - if (connectionHeader != null - && connectionHeader.ValueData.EqualsIgnoreCaseAscii(KnownHeaders.ConnectionClose.String8)) - return false; + return !close; + } + } + + private static void ClassifyConnectionTokens(ReadOnlySpan value, ref bool close, ref bool keepAlive) + { + while (!value.IsEmpty) + { + var comma = value.IndexOf((byte)','); + var token = comma >= 0 ? value[..comma] : value; + value = comma >= 0 ? value[(comma + 1)..] : default; + token = TrimAsciiWs(token); + if (AsciiEqualsIgnoreCase(token, "close"u8)) + close = true; + else if (AsciiEqualsIgnoreCase(token, "keep-alive"u8)) + keepAlive = true; + } + } - return true; + private static bool AsciiEqualsIgnoreCase(ReadOnlySpan a, ReadOnlySpan b) + { + if (a.Length != b.Length) return false; + for (var i = 0; i < a.Length; i++) + { + var x = a[i]; + var y = b[i]; + if (x is >= (byte)'A' and <= (byte)'Z') x = (byte)(x + 32); + if (y is >= (byte)'A' and <= (byte)'Z') y = (byte)(y + 32); + if (x != y) return false; } + + return true; + } + + private static ReadOnlySpan TrimAsciiWs(ReadOnlySpan span) + { + while (!span.IsEmpty && span[0] is (byte)' ' or (byte)'\t') + span = span[1..]; + while (!span.IsEmpty && span[^1] is (byte)' ' or (byte)'\t') + span = span[..^1]; + return span; } /// diff --git a/src/Titanium.Web.Proxy/Http2/Http2FlowController.cs b/src/Titanium.Web.Proxy/Http2/Http2FlowController.cs index 2c18f947b..f37ed755d 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2FlowController.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2FlowController.cs @@ -77,24 +77,30 @@ public void RemoveStream(int streamId) /// Applies the peer's SETTINGS_INITIAL_WINDOW_SIZE (RFC 7540 §6.9.2): the delta from the previous /// value is applied to every currently tracked stream window (which may drive some negative - that /// is valid and callers must simply keep waiting), and the new value becomes the initial window for - /// streams registered after this point. + /// streams registered after this point. Returns true if any stream window would exceed + /// (FLOW_CONTROL_ERROR). /// - public void OnInitialWindowSizeChanged(int newValue) + public bool OnInitialWindowSizeChanged(int newValue) { lock (gate) { var delta = (long)newValue - initialStreamWindow; initialStreamWindow = newValue; + var overflow = false; if (delta != 0) { var streamIds = new List(streamWindows.Keys); foreach (var id in streamIds) { - streamWindows[id] += delta; + var updated = streamWindows[id] + delta; + streamWindows[id] = updated; + if (updated > MaxWindow) + overflow = true; } } WakeWaitersNoLock(); + return overflow; } } @@ -137,7 +143,8 @@ public bool OnWindowUpdate(int streamId, int increment) /// /// Non-blocking variant of . Returns false when credit is /// insufficient instead of waiting. Used to keep HEADERS + first DATA under one write lock - /// when the peer window already has room. + /// when the peer window already has room. Does not register unknown streams: a DATA path + /// that races must not leak a window entry or consume connection credit. /// public bool TryReserve(int streamId, int bytes) { @@ -146,10 +153,7 @@ public bool TryReserve(int streamId, int bytes) lock (gate) { if (!streamWindows.TryGetValue(streamId, out var streamWindow)) - { - streamWindow = initialStreamWindow; - streamWindows[streamId] = streamWindow; - } + return false; if (connectionWindow < bytes || streamWindow < bytes) return false; @@ -164,7 +168,8 @@ public bool TryReserve(int streamId, int bytes) /// Non-blocking reserve of as many of as currently fit in both the /// connection window and the stream window (Kestrel CheckStreamWindow shape). Returns the /// reserved count (0..); never waits. Used by the compressed-relay DATA - /// path so a short client window cannot park the shared origin frame reader. + /// path so a short client window cannot park the shared origin frame reader. Unknown streams + /// yield 0 (same race-safe contract as ). ///
public int TryReservePartial(int streamId, int bytes) { @@ -173,10 +178,7 @@ public int TryReservePartial(int streamId, int bytes) lock (gate) { if (!streamWindows.TryGetValue(streamId, out var streamWindow)) - { - streamWindow = initialStreamWindow; - streamWindows[streamId] = streamWindow; - } + return 0; var streamAvail = streamWindow > 0 ? streamWindow : 0; var connAvail = connectionWindow > 0 ? connectionWindow : 0; diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs index ba16b3bb1..c58971beb 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs @@ -133,6 +133,7 @@ internal partial class Http2Helper "HTTP/2 header list too large: " + ex.Message, ex, sessionArgs)); await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendRstStreamAsync(new Http2FrameHeader(), new byte[9], hbStreamId, (Http2ErrorCode)0xb /* ENHANCE_YOUR_CALM */, input)); + removeAndFinalizeStream(hbStreamId); return false; } catch (Exception ex) @@ -146,8 +147,8 @@ internal partial class Http2Helper // connection down instead so both sides observe a clean failure and can retry on a new // connection. ReportException(logger, new ProxyHttpException("Failed to decode HTTP/2 headers", ex, sessionArgs)); - await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendGoAwayAsync(new Http2FrameHeader(), new byte[9], hbStreamId, - Http2ErrorCode.CompressionError, input)); + await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendGoAwayAsync(new Http2FrameHeader(), new byte[9], + connectionState.LastClientStreamId, Http2ErrorCode.CompressionError, input)); throw; } @@ -163,6 +164,7 @@ internal partial class Http2Helper ReportException(logger, new ProxyHttpException(malformed, null, sessionArgs)); await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendRstStreamAsync(new Http2FrameHeader(), new byte[9], hbStreamId, Http2ErrorCode.ProtocolError, input)); + removeAndFinalizeStream(hbStreamId); return false; } } @@ -178,6 +180,7 @@ internal partial class Http2Helper ReportException(logger, new ProxyHttpException(forbidden, null, sessionArgs)); await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendRstStreamAsync(new Http2FrameHeader(), new byte[9], hbStreamId, Http2ErrorCode.ProtocolError, input)); + removeAndFinalizeStream(hbStreamId); return false; } } @@ -383,6 +386,7 @@ internal partial class Http2Helper null, sessionArgs)); await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendRstStreamAsync(new Http2FrameHeader(), new byte[9], hbStreamId, Http2ErrorCode.ProtocolError, input)); + removeAndFinalizeStream(hbStreamId); return false; } @@ -396,6 +400,7 @@ internal partial class Http2Helper forbiddenTrailerHeader.Name + "'.", null, sessionArgs)); await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendRstStreamAsync(new Http2FrameHeader(), new byte[9], hbStreamId, Http2ErrorCode.ProtocolError, input)); + removeAndFinalizeStream(hbStreamId); return false; } @@ -407,16 +412,32 @@ internal partial class Http2Helper // a request answered synthetically never reached the server - nothing to forward, // but the block above still had to be decoded to keep this connection's HPACK // hpack.Decoder state in sync with the peer's encoder. - await hpack.RequestDispatchChain; - - if (!syntheticStreams.ContainsKey(hbStreamId)) + // + // Never await RequestDispatchChain (the connection-wide admission tail) here: for a + // buffered/deferred request that tail is this stream's own Http2OriginAdmitted, which + // only completes in SendBody after this method returns (frame-loop deadlock). Trailers + // also replace DATA END_STREAM, so the body-end path that runs SendBody sits right + // after we return — enqueueing trailers here would put them on the FIFO before HEADERS. + if (!syntheticStreams.ContainsKey(hbStreamId) && headerRr.Http2HeadersQueued) { - // Queued on the same ordered FIFO as the stream's HEADERS/DATA so trailers cannot - // overtake them on the wire. + // Streamed path: HEADERS (and DATA) are already on the FIFO. Await only this + // stream's own dispatch so trailers cannot overtake a still-pending HEADERS enqueue. + if (headerRr.Http2BeforeHandlerTask is { IsCompleted: false } ownDispatch) + await ownDispatch; QueueSendTrailer(connectionState, towardServer: isClient, outputWriteLock, remoteSettings, frameHeader, frameHeaderBuffer, hbStreamId, headerRr.TrailingHeaders, endStreamFlag, output); } + // else: deferred/buffered — TrailingHeaders stay on rr; SendBody emits them after + // HEADERS+DATA when the body-end path runs (endStreamFlag is set by the caller). + // External bridges (H2→H3): trailers replace DATA END_STREAM, so complete the body + // channel here or copyRequestBody hangs forever in ReadAllAsync. + if (connectionState.Streams.TryGetValue(hbStreamId, out var trailerBridgeState) + && trailerBridgeState.InboundRequestBodyChannel != null + && endStreamFlag) + { + trailerBridgeState.InboundRequestBodyChannel.Writer.TryComplete(); + } return false; } @@ -1484,6 +1505,7 @@ await RelayCompressedHeaderBlockAsync( ReportException(logger, new ProxyHttpException(trailerForbidden, null, sessionArgs)); await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendRstStreamAsync(new Http2FrameHeader(), new byte[9], hbStreamId, Http2ErrorCode.ProtocolError, input)); + removeAndFinalizeStream(hbStreamId); return false; } } @@ -1493,9 +1515,16 @@ await RelayCompressedHeaderBlockAsync( headerRr.TrailingHeaders.AddHeader(header); } - // Same ordered FIFO as the response HEADERS/DATA so trailers cannot overtake them. - QueueSendTrailer(connectionState, towardServer: false, outputWriteLock, remoteSettings, - frameHeader, frameHeaderBuffer, hbStreamId, headerRr.TrailingHeaders, endStreamFlag, output); + // Same contract as request trailers: only enqueue when HEADERS are already on the FIFO. + // GetResponseBody defers HEADERS to SendBody; enqueueing trailers here would put them first. + if (headerRr.Http2HeadersQueued) + { + if (headerRr.Http2BeforeHandlerTask is { IsCompleted: false } ownDispatch) + await ownDispatch; + QueueSendTrailer(connectionState, towardServer: false, outputWriteLock, remoteSettings, + frameHeader, frameHeaderBuffer, hbStreamId, headerRr.TrailingHeaders, endStreamFlag, output); + } + return false; } } diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Relay.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Relay.cs index f8c84d5ee..5457e255c 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Relay.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Relay.cs @@ -185,7 +185,7 @@ await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendRstStreamAs ReportException(logger, new ProxyHttpException( "Failed to decode HTTP/2 headers on compressed-relay stream", ex, null)); await LockedWriteAsync(ownLegWriteLock, cancellationToken, () => SendGoAwayAsync(new Http2FrameHeader(), new byte[9], - hbStreamId, Http2ErrorCode.CompressionError, input)); + connectionState.LastClientStreamId, Http2ErrorCode.CompressionError, input)); throw; } diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs index 123373c09..9635d171a 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs @@ -391,8 +391,10 @@ void RemoveAndFinalizeStream(int removeStreamId) if (leftover > 0) { - // Fire-and-forget under the loop; connection credit stays batched. - _ = GrantReceiveCreditLockedAsync(removeStreamId, 0, leftover).AsTask(); + // Fire-and-forget under the loop; connection credit stays batched. Observe faults + // so an unexpected GrantReceiveCredit failure is not an unobserved task exception. + var creditTask = GrantReceiveCreditLockedAsync(removeStreamId, 0, leftover).AsTask(); + pendingSynthetics.Track(creditTask); } connectionState.OriginRelayPool?.ReleaseStream(removeStreamId); @@ -401,6 +403,7 @@ void RemoveAndFinalizeStream(int removeStreamId) { removedState.InboundTunnelChannel?.Writer.TryComplete( new IOException("HTTP/2 stream removed due to protocol error.")); + CompleteAndDrainRequestBodyChannel(removedState); removedState.Cancellation.Cancel(); // Compressed-relay CTS is TryReset in PrepareForPool; disposing here forces a new CTS. if (!removedState.IsCompressedRelay) @@ -416,6 +419,16 @@ void RemoveAndFinalizeStream(int removeStreamId) Action removeAndFinalizeStream = RemoveAndFinalizeStream; Func, ValueTask> lockedOutputWriteFn = lockedOutputWrite; + static void CompleteAndDrainRequestBodyChannel(Http2StreamState state) + { + var channel = state.InboundRequestBodyChannel; + if (channel == null) + return; + channel.Writer.TryComplete(); + while (channel.Reader.TryRead(out var item)) + ArrayPool.Shared.Return(item.Buffer); + } + byte[] buffer = new byte[MaxAcceptableFrameSize]; // Typical HTTP/2 server stacks read a large Pipe buffer then peel frames with // Http2FrameReader.TryReadFrame. Mirror that without a ReadOnlySequence retrofit: @@ -896,18 +909,17 @@ await lockedOwnLegWrite(() => SendRstStreamAsync(new Http2FrameHeader(), args = existingStreamState.SessionArgs; } - // Request DATA must not be routed before the stream's BeforeRequest dispatch has finished: - // the dispatch task (thread-pool since the HEADERS decode was decoupled from handler - // execution) is what marks bridge/synthetic streams (syntheticStreams, Http2IgnoreBodyFrames). - // DATA racing past it falls through to the default relay and reserves send-window credit - // toward the origin leg - which for bridge connections is a NullOriginStream that never - // grants WINDOW_UPDATE, permanently leaking the 64 KiB connection window and deadlocking the - // whole frame loop in ReserveAsync (uploads and every response writer stall together). The - // The dispatch completes even when the user handler is still waiting on the request body + // DATA must not be routed before the stream's BeforeRequest/BeforeResponse dispatch has + // finished: the dispatch task is what marks bridge/synthetic streams and (on the MITM + // static-HPACK path) queues HEADERS onto the dedicated writer. DATA racing past it either + // reserves send-window credit toward a NullOriginStream (request side) or enqueues DATA + // ahead of still-pending response HEADERS (response side → PROTOCOL_ERROR on the client). + // The dispatch completes even when the user handler is still waiting on the body // (ReadHttp2BeforeHandlerTaskCompletionSource unblocks it), so awaiting here cannot deadlock. - // The END_STREAM/SendBody path below already relies on the same contract. - if (isClient && type == Http2FrameType.Data - && args?.HttpClient.Request.Http2BeforeHandlerTask is { IsCompleted: false } dataDispatch) + if (type == Http2FrameType.Data + && (isClient + ? args?.HttpClient.Request.Http2BeforeHandlerTask + : args?.HttpClient.Response.Http2BeforeHandlerTask) is { IsCompleted: false } dataDispatch) { await dataDispatch; } @@ -1318,9 +1330,10 @@ await RelayCompressedHeaderBlockAsync( "HTTP/2 bridge stream exceeded its bounded request-body buffer.", null, args)); RemoveAndFinalizeStream(streamId); - await lockedOwnLegWrite(() => SendRstStreamAsync( - new Http2FrameHeader(), new byte[9], streamId, - Http2ErrorCode.EnhanceYourCalm, input)); + // Queue RST on the client FIFO (isClient: InboundRequestBodyChannel is + // only used on the client→proxy leg for external bridges). + QueueRstStreamFrame(connectionState, input, streamId, + Http2ErrorCode.EnhanceYourCalm); } } @@ -1935,7 +1948,11 @@ await lockedOwnLegWrite(async () => flow = connectionState.ClientSendFlow; else flow = connectionState.ServerSendFlow; - flow.OnInitialWindowSizeChanged((int)value); + if (flow.OnInitialWindowSizeChanged((int)value)) + { + invalidSettings = true; + invalidSettingsError = Http2ErrorCode.FlowControlError; + } if (!suppressConnectionFrameRelay && value < ClientInitialStreamWindowSize) { @@ -2231,6 +2248,7 @@ await lockedOwnLegWrite(async () => // RFC 8441: if the reset stream is an extended CONNECT tunnel, unblock the relay // that is reading from the inbound channel so it can shut down promptly. resetStream.InboundTunnelChannel?.Writer.TryComplete(); + CompleteAndDrainRequestBodyChannel(resetStream); await resetStream.Cancellation.CancelAsync(); if (!resetStream.IsCompressedRelay) resetStream.Cancellation.Dispose(); diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Hpack.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Hpack.cs index 423ced70f..3ea499481 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Hpack.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Hpack.cs @@ -71,15 +71,17 @@ private static ByteString AsciiToLowerByteString(ByteString name) /// /// Hop-by-hop / connection-specific names RFC 7540 §8.1.2.2 forbids on HTTP/2 (plus Host, which - /// becomes :authority). Compared on so EncodeHeaderBlock does not - /// force header.Name GetString under writeLock. + /// becomes :authority). TE is omitted unless its value is exactly trailers + /// (the one TE value HTTP/2 allows). Compared on so EncodeHeaderBlock + /// does not force header.Name GetString under writeLock. /// - private static bool ShouldOmitHttp2Header(ByteString name) + private static bool ShouldOmitHttp2Header(ByteString name, ByteString value) { var span = name.Span; return span.Length switch { - 2 => EqualsAsciiIgnoreCase(span, "te"u8), + 2 => EqualsAsciiIgnoreCase(span, "te"u8) + && !EqualsAsciiIgnoreCase(value.Span, "trailers"u8), 4 => EqualsAsciiIgnoreCase(span, "host"u8), 7 => EqualsAsciiIgnoreCase(span, "upgrade"u8), 10 => EqualsAsciiIgnoreCase(span, "connection"u8) @@ -274,7 +276,7 @@ private static bool EqualsAsciiIgnoreCase(ReadOnlySpan a, ReadOnlySpan + /// Direct socket write of a HEADERS block. Prefer so encode order + /// matches wire order on the dedicated frame writer. Kept for unit-test coverage of the legacy + /// path; production relay code must not call this. + /// internal static ValueTask SendHeader(Http2Settings settings, Http2FrameHeader frameHeader, byte[] frameHeaderBuffer, RequestResponseBase rr, bool endStream, Stream output, bool pushPromise) // NOSONAR S3776 -- This protocol/state-machine path shares mutable parsing or transport state; splitting it further would create disproportionate regression risk. { // Same HPACK lock as QueueSendHeader: Encoder + encode scratch are connection-direction scoped. @@ -142,7 +147,7 @@ private static void QueueDataFrame(Http2ConnectionState connectionState, Stream /// Queues a client-bound RST_STREAM through the same FIFO as the stream's queued HEADERS/DATA so /// it cannot overtake them on the wire (a direct locked write could). /// - private static void QueueRstStreamFrame(Http2ConnectionState connectionState, Stream clientStream, + internal static void QueueRstStreamFrame(Http2ConnectionState connectionState, Stream clientStream, int streamId, Http2ErrorCode errorCode) { const int frameSize = 9 + 4; @@ -393,18 +398,25 @@ private static async ValueTask WriteHeaderBlockMultiAsync(Http2FrameHeader frame // Dispatch may already have queued HEADERS. Encoding them again makes the peer decode the // priority prefix as HPACK (COMPRESSION_ERROR) or reject the second block (PROTOCOL_ERROR). var streamId = frameHeader.StreamId; + var hasTrailers = rr.HasTrailingHeaders; + // END_STREAM belongs on the trailer HEADERS when trailers are present (RFC 9113 §8.1). if (!rr.Http2HeadersQueued) QueueSendHeader(connectionState, towardServer, writeLock, settings, frameHeader, - frameHeaderBuffer, rr, endStream: !hasBody, output, pushPromise: false); + frameHeaderBuffer, rr, endStream: !hasBody && !hasTrailers, output, pushPromise: false); - if (!hasBody) - return; + if (hasBody) + { + var maxFrameSize = settings.MaxFrameSize > 0 + ? Math.Min(maxDataFrameSize, settings.MaxFrameSize) + : maxDataFrameSize; + await QueueSendData(connectionState, towardServer, writeLock, streamId, body!, + endStream: !hasTrailers, maxFrameSize, flow, output, cancellationToken) + .ConfigureAwait(false); + } - var maxFrameSize = settings.MaxFrameSize > 0 - ? Math.Min(maxDataFrameSize, settings.MaxFrameSize) - : maxDataFrameSize; - await QueueSendData(connectionState, towardServer, writeLock, streamId, body!, endStream: true, - maxFrameSize, flow, output, cancellationToken).ConfigureAwait(false); + if (hasTrailers) + QueueSendTrailer(connectionState, towardServer, writeLock, settings, frameHeader, + frameHeaderBuffer, streamId, rr.TrailingHeaders, endStream: true, output); } /// @@ -468,6 +480,11 @@ await SendBody(connectionState, towardServer: true, settings, request, /// blocked trying to take the same lock for control-frame replies. Matches the order used by /// the main DATA relay. /// + /// + /// Direct socket write of DATA frames. Prefer so DATA cannot overtake + /// HEADERS still queued on the dedicated frame writer. Kept for unit-test coverage of the legacy + /// path; production relay code must not call this. + /// internal static async ValueTask SendData(Http2FrameHeader frameHeader, byte[] frameHeaderBuffer, int streamId, // NOSONAR S107 -- Frame-writing state is kept explicit for this low-level helper. ReadOnlyMemory data, bool endStream, int maxFrameSize, Http2FlowController flow, Stream output, CancellationToken cancellationToken, SemaphoreSlim? writeLock = null) @@ -815,15 +832,11 @@ internal static async Task EmitInterimResponseAsync(SessionEventArgs args, int s endStream: false, clientStream, pushPromise: false); // Flush so Navigation Timing responseStart can move before the final response arrives. - await connectionState.ClientWriteLock.WaitAsync(cancellationToken); - try - { - await clientStream.FlushAsync(cancellationToken); - } - finally - { - connectionState.ClientWriteLock.Release(); - } + // Do not take ClientWriteLock around Flush: the 1xx HEADERS are already on ClientFrameWriter's + // FIFO and the drain shares that lock — holding it here can Flush before the queued frame + // is written. Best-effort flush after a yield lets the drain run first. + await Task.Yield(); + await clientStream.FlushAsync(cancellationToken); } /// @@ -1520,6 +1533,22 @@ public void AddHeader(ByteString name, ByteString value, bool sensitive) => } } + // RFC 9113 §8.2.1: field names and values must not contain CR, LF, or NUL. + if (!HasMalformedHeader && ContainsCtlDelimiter(name.Span)) + { + HasMalformedHeader = true; + MalformedReason = "header field name contains CR, LF, or NUL"; + } + + if (!HasMalformedHeader && ContainsCtlDelimiter(value.Span)) + { + HasMalformedHeader = true; + MalformedReason = "header field value contains CR, LF, or NUL"; + } + + if (HasMalformedHeader) + return; + addHeaderFunc?.Invoke(name, value); if (prebuilt != null) decodeTarget?.AddHeader(prebuilt); @@ -1527,6 +1556,17 @@ public void AddHeader(ByteString name, ByteString value, bool sensitive) => decodeTarget?.AddHeader(new HttpHeader(name, value)); } + private static bool ContainsCtlDelimiter(ReadOnlySpan span) + { + foreach (var b in span) + { + if (b is 0 or (byte)'\r' or (byte)'\n') + return true; + } + + return false; + } + private void MarkMalformed(string reason) { if (!HasMalformedHeader) diff --git a/src/Titanium.Web.Proxy/Http2/Http2OriginConnection.cs b/src/Titanium.Web.Proxy/Http2/Http2OriginConnection.cs index fa8bb46e0..9ac83f2e4 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2OriginConnection.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2OriginConnection.cs @@ -1035,7 +1035,17 @@ private void ReleaseTunnelBookkeeping(int streamId, PendingStream pending, Semap continue; } - sendFlow.OnWindowUpdate(streamId, increment); + if (sendFlow.OnWindowUpdate(streamId, increment)) + { + // RFC 9113 §6.9.1: window exceeding 2^31-1 is FLOW_CONTROL_ERROR. + if (streamId == 0) + { + Fail(new IOException("HTTP/2 protocol error: connection flow-control window overflow.")); + return; + } + + Http2Helper.EnqueueRstStream(Writer, streamId, Http2ErrorCode.FlowControlError); + } } continue; @@ -1333,7 +1343,12 @@ private void ApplySettings(ReadOnlySpan payload) return; } - sendFlow.OnInitialWindowSizeChanged(value); + if (sendFlow.OnInitialWindowSizeChanged(value)) + { + Fail(new IOException( + "HTTP/2 protocol error: SETTINGS_INITIAL_WINDOW_SIZE drove a stream window above 2^31-1.")); + return; + } } else if (identifier == (int)Http2SettingsId.MaxConcurrentStreams) originSettings.MaxConcurrentStreams = value; diff --git a/src/Titanium.Web.Proxy/Http2/Http2PendingWork.cs b/src/Titanium.Web.Proxy/Http2/Http2PendingWork.cs index 3266082c9..4391054a6 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2PendingWork.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2PendingWork.cs @@ -1,5 +1,8 @@ +using System; using System.Collections.Concurrent; using System.Threading.Tasks; +using Microsoft.Extensions.Logging; +using Titanium.Web.Proxy.Logging; namespace Titanium.Web.Proxy.Http2; @@ -11,21 +14,29 @@ namespace Titanium.Web.Proxy.Http2; internal sealed class Http2PendingWork { private readonly ConcurrentDictionary pending = new(); + private readonly ILogger? logger; + + public Http2PendingWork(ILogger? logger = null) => this.logger = logger; public bool IsEmpty => pending.IsEmpty; public void Track(Task task) { if (task.IsCompleted) + { + ObserveFault(task); return; + } if (!pending.TryAdd(task, 0)) return; _ = task.ContinueWith(static (t, state) => { - ((ConcurrentDictionary)state!).TryRemove(t, out _); - }, pending, TaskContinuationOptions.ExecuteSynchronously); + var self = (Http2PendingWork)state!; + self.pending.TryRemove(t, out _); + self.ObserveFault(t); + }, this, TaskContinuationOptions.ExecuteSynchronously); } public Task WhenAllAsync() @@ -38,6 +49,16 @@ public Task WhenAllAsync() var i = 0; foreach (var t in snapshot) array[i++] = t; - return Task.WhenAll(array); + // OnlyWaitOnAll: faults were already observed/logged in Track's continuation; do not let a + // single synthetic failure tear down the whole relay via Task.WhenAll's aggregate throw. + return Task.WhenAll(array).ContinueWith(static _ => { }, TaskContinuationOptions.ExecuteSynchronously); + } + + private void ObserveFault(Task task) + { + if (!task.IsFaulted || task.Exception == null) + return; + ProxyDiagnostics.ReportCaught(logger ?? ProxyDiagnostics.Logger, + "HTTP/2 background work faulted", task.Exception.GetBaseException()); } } diff --git a/src/Titanium.Web.Proxy/Http3/Http3OriginBridge.Quic.cs b/src/Titanium.Web.Proxy/Http3/Http3OriginBridge.Quic.cs index 904d0a94a..a8c74747b 100644 --- a/src/Titanium.Web.Proxy/Http3/Http3OriginBridge.Quic.cs +++ b/src/Titanium.Web.Proxy/Http3/Http3OriginBridge.Quic.cs @@ -86,6 +86,9 @@ internal static partial class Http3OriginBridge QuicServerConnection? quicConn = null; // When true, StreamBodyWriter owns originStream + quicConn release (do not dispose/release here). var streamHandedOff = false; + // Invoked by StreamBodyWriter's finally, or by the outer finally if the writer never ran + // (BeforeResponse replaced the response / cancellation before emit). + Func? pendingHandoffRelease = null; // A pooled connection can go stale between requests: MsQuic's own (server-negotiated) idle // timeout is often shorter than QuicConnectionPool's bookkeeping window, and a silently // dead connection isn't reflected by QuicServerConnection.IsClosed until it's actually used. @@ -182,40 +185,50 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, body, cancellatio responseHeadersFrame = await Http3Frame.ReadAsync(originStream, maxPayloadBytes: server.MaxDecodedHeaderListBytes, cancellationToken); - if (responseHeadersFrame == null) - throw new Http3StreamException(Http3ErrorCode.FrameUnexpected, - "Expected HEADERS frame as first frame on origin response stream."); - - // RFC 9114 §9: ignore unknown/GREASE frames. DATA before HEADERS is a protocol error. - if (responseHeadersFrame.Type != Http3FrameType.Headers) + try { - if (responseHeadersFrame.Type == Http3FrameType.Data) - throw new Http3StreamException(Http3ErrorCode.FrameUnexpected, - "DATA frame received before response HEADERS."); - if (IsForbiddenOnRequestStream(responseHeadersFrame.Type)) + if (responseHeadersFrame == null) throw new Http3StreamException(Http3ErrorCode.FrameUnexpected, - $"Frame type 0x{responseHeadersFrame.Type:X} not permitted on request stream."); - continue; // GREASE / unknown / PRIORITY_UPDATE etc. - } + "Expected HEADERS frame as first frame on origin response stream."); - decodedResponseHeaders = QpackDecoder.Decode(responseHeadersFrame.Payload.Span); - finalStatus = ParseStatusCode(decodedResponseHeaders); + // RFC 9114 §9: ignore unknown/GREASE frames. DATA before HEADERS is a protocol error. + if (responseHeadersFrame.Type != Http3FrameType.Headers) + { + if (responseHeadersFrame.Type == Http3FrameType.Data) + throw new Http3StreamException(Http3ErrorCode.FrameUnexpected, + "DATA frame received before response HEADERS."); + if (IsForbiddenOnRequestStream(responseHeadersFrame.Type)) + throw new Http3StreamException(Http3ErrorCode.FrameUnexpected, + $"Frame type 0x{responseHeadersFrame.Type:X} not permitted on request stream."); + continue; // GREASE / unknown / PRIORITY_UPDATE etc. + } - if (finalStatus is >= 100 and < 200) - { - if (++interimCount > maxInterimResponses) - throw new Http3StreamException(Http3ErrorCode.InternalError, - $"Origin sent more than {maxInterimResponses} interim responses."); + decodedResponseHeaders = QpackDecoder.Decode(responseHeadersFrame.Payload.Span); + finalStatus = ParseStatusCode(decodedResponseHeaders); + if (finalStatus is < 100 or > 599) + throw new Http3StreamException(Http3ErrorCode.MessageError, + $"Origin response :status is missing or invalid ({finalStatus})."); - if (onInterimResponse != null) + if (finalStatus is >= 100 and < 200) { - var interim = BuildResponseFromHeaders(decodedResponseHeaders, HttpHeader.Version30); - await onInterimResponse(interim, cancellationToken); + if (++interimCount > maxInterimResponses) + throw new Http3StreamException(Http3ErrorCode.InternalError, + $"Origin sent more than {maxInterimResponses} interim responses."); + + if (onInterimResponse != null) + { + var interim = BuildResponseFromHeaders(decodedResponseHeaders, HttpHeader.Version30); + await onInterimResponse(interim, cancellationToken); + } + continue; } - continue; - } - break; + break; + } + finally + { + responseHeadersFrame?.ReturnPayload(); + } } sessionArgs.Timing?.MarkResponseHeadersReceived(); @@ -228,13 +241,16 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, body, cancellatio if (!string.IsNullOrEmpty(altSvc)) { var entries = AltSvcParser.Parse(altSvc); - if (entries.Count > 0 && entries[0].MaxAgeSeconds > 0) + var originPort = request.GetOriginHostPort(port).Port; + foreach (var entry in entries) { - var originPort = request.GetOriginHostPort(port).Port; - var ttlSeconds = Math.Min(entries[0].MaxAgeSeconds, Http3OriginCapabilityCache.DefaultTtl.TotalSeconds * 2); + if (entry.MaxAgeSeconds <= 0) + continue; + var ttlSeconds = Math.Min(entry.MaxAgeSeconds, Http3OriginCapabilityCache.DefaultTtl.TotalSeconds * 2); var ttl = TimeSpan.FromSeconds(ttlSeconds); server.Http3OriginCapabilityCache.Set($"{sniHost}:{originPort}", - entries[0].Port == originPort ? int.MinValue : entries[0].Port, ttl); + entry.Port == originPort ? int.MinValue : entry.Port, ttl); + break; } } @@ -332,6 +348,15 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, body, cancellatio quicConn = null; streamHandedOff = true; + var handoffReleased = 0; + pendingHandoffRelease = async () => + { + if (Interlocked.Exchange(ref handoffReleased, 1) != 0) + return; + try { await streamToClient.DisposeAsync(); } catch { /* best effort */ } + try { await QuicConnectionPool.ReleaseAsync(connToRelease); } catch { /* best effort */ } + }; + var hasBodyWriteHook = server.HasOnResponseBodyWriteSubscribers; response.StreamBodyWriter = async (clientBodyStream, ct) => @@ -414,8 +439,8 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, body, cancellatio } finally { - try { await streamToClient.DisposeAsync(); } catch { /* best effort */ } - try { await QuicConnectionPool.ReleaseAsync(connToRelease); } catch { /* best effort */ } + if (pendingHandoffRelease != null) + await pendingHandoffRelease(); } }; @@ -492,11 +517,12 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, body, cancellatio continue; } - if (!isForcedH3) + if (!isForcedH3 && !requestSent) { // Auto policy: the cached H3 capability is stale or unusable — evict and fall back to TCP. - // Evict by origin identity (request URI port), not the QUIC connect port, which may - // differ when Alt-Svc / SVCB advertised an alternative port. + // Only when no request bytes were written: replaying a POST/PUT after HEADERS were sent + // would double-submit. Evict by origin identity (request URI port), not the QUIC connect + // port, which may differ when Alt-Svc / SVCB advertised an alternative port. var originPort = request.GetOriginHostPort(port).Port; var hostAndPort = $"{sniHost}:{originPort}"; server.Http3OriginCapabilityCache.Evict(hostAndPort); @@ -518,7 +544,8 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, body, cancellatio return; } - // Forced H3: surface as a 502 — never fall back silently. + // Forced H3, or Auto after the request was already on the wire: surface as a 502 — + // never silently replay a non-idempotent exchange on TCP. sessionArgs.HttpClient.Response = MakeBadGatewayResponse(ex.Message); return; } @@ -527,8 +554,10 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, body, cancellatio finally { // When StreamBodyWriter owns the stream/connection, it releases on completion. - // Otherwise give up this request's stream so idle eviction is not blocked forever. - if (!streamHandedOff && quicConn != null) + // If the writer never started (response replaced / cancelled before emit), release here. + if (pendingHandoffRelease != null) + await pendingHandoffRelease(); + else if (!streamHandedOff && quicConn != null) await QuicConnectionPool.ReleaseAsync(quicConn); } } diff --git a/src/Titanium.Web.Proxy/Http3/Http3OriginClientSession.cs b/src/Titanium.Web.Proxy/Http3/Http3OriginClientSession.cs index bf15953ed..4219e223b 100644 --- a/src/Titanium.Web.Proxy/Http3/Http3OriginClientSession.cs +++ b/src/Titanium.Web.Proxy/Http3/Http3OriginClientSession.cs @@ -171,9 +171,10 @@ private static async Task DrainBytesAsync(QuicStream stream, CancellationToken c continue; } - // Drain remaining control frames (GOAWAY, etc.). + // Drain remaining control frames. GOAWAY means stop new streams but keep the + // control stream open (RFC 9114 §6.2.1: closing it is H3_CLOSED_CRITICAL_STREAM). if (frame.Type == Http3FrameType.GoAway) - return settings; + continue; } finally { diff --git a/src/Titanium.Web.Proxy/Network/HttpWebClient.cs b/src/Titanium.Web.Proxy/Network/HttpWebClient.cs index 8046cd4e4..3cda9db20 100644 --- a/src/Titanium.Web.Proxy/Network/HttpWebClient.cs +++ b/src/Titanium.Web.Proxy/Network/HttpWebClient.cs @@ -390,12 +390,9 @@ private ValueTask ReceiveResponseAfterStatus(ResponseStatusInfo? httpStatus, if (httpStatus == null) { // EOF before any response bytes: typically a stale pooled keep-alive connection. - // A malformed status line (same method, below) is the sibling case: the socket - // stayed open but the next bytes are not an HTTP status line, usually leftover - // body from a desynced keep-alive. RetryPolicy re-runs the whole exchange; only - // safe when there is no body or the body is buffered in memory (IsBodyRead). - // A streamed body cannot be replayed. - if (!Request.HasBody || Request.IsBodyRead) + // Only replay-safe for idempotent methods with a replayable body (same gate as + // malformed status). A POST that already reached the origin must not be replayed. + if (CanRetryEofBeforeResponse()) throw new RetryableServerConnectionException( "Server connection was closed before any response was received."); @@ -444,6 +441,8 @@ private bool CanRetryMalformedStatusLine() => (!Request.HasBody || Request.IsBodyRead) && Routing.StreamDestinationDispatch.IsIdempotentMethod(Request.Method); + private bool CanRetryEofBeforeResponse() => CanRetryMalformedStatusLine(); + private static RetryableServerConnectionException MalformedStatusLine(FormatException ex) => new("Server returned a response that did not start with an HTTP status line.", ex); diff --git a/src/Titanium.Web.Proxy/Options/PolicyFamily.cs b/src/Titanium.Web.Proxy/Options/PolicyFamily.cs index f4e7951eb..d5d74d1d9 100644 --- a/src/Titanium.Web.Proxy/Options/PolicyFamily.cs +++ b/src/Titanium.Web.Proxy/Options/PolicyFamily.cs @@ -83,5 +83,20 @@ public enum PolicyFamily /// GOAWAY(PROTOCOL_ERROR) on violations. /// /// - Http2RelayValidation + Http2RelayValidation, + + /// + /// Whether HTTP/1 keep-alive retries (EOF-before-response, malformed status, mid-exchange + /// IOException) and bare CR in header values follow the strict replay-safe rules. + /// + /// (default on and + /// ) keeps today's lenient behavior and + /// records a policy breach metric when the strict rule would have fired. + /// + /// + /// (default on ) + /// refuses to replay non-idempotent methods and rejects bare CR/LF/NUL in header values. + /// + /// + Http1ReplaySafety } diff --git a/src/Titanium.Web.Proxy/Options/ProxyPolicyModes.cs b/src/Titanium.Web.Proxy/Options/ProxyPolicyModes.cs index 5cde2209d..2558e3fad 100644 --- a/src/Titanium.Web.Proxy/Options/ProxyPolicyModes.cs +++ b/src/Titanium.Web.Proxy/Options/ProxyPolicyModes.cs @@ -48,7 +48,8 @@ private ProxyPolicyModes(Dictionary modes, bool allowA headerLimits: PolicyMode.Enforce, admissionControl: PolicyMode.Enforce, http2AbuseBudget: PolicyMode.Enforce, - http2RelayValidation: PolicyMode.Enforce); + http2RelayValidation: PolicyMode.Enforce, + http1ReplaySafety: PolicyMode.Enforce); /// Returns the mode selected for . public PolicyMode this[PolicyFamily family] => modes[family]; @@ -60,7 +61,8 @@ public static ProxyPolicyModes Create( PolicyMode headerLimits, PolicyMode admissionControl, PolicyMode http2AbuseBudget, - PolicyMode http2RelayValidation = PolicyMode.Disabled) + PolicyMode http2RelayValidation = PolicyMode.Disabled, + PolicyMode http1ReplaySafety = PolicyMode.Observe) { var dict = new Dictionary { @@ -69,7 +71,8 @@ public static ProxyPolicyModes Create( [PolicyFamily.HeaderLimits] = headerLimits, [PolicyFamily.AdmissionControl] = admissionControl, [PolicyFamily.Http2AbuseBudget] = http2AbuseBudget, - [PolicyFamily.Http2RelayValidation] = http2RelayValidation + [PolicyFamily.Http2RelayValidation] = http2RelayValidation, + [PolicyFamily.Http1ReplaySafety] = http1ReplaySafety }; return new ProxyPolicyModes(dict, false); } diff --git a/src/Titanium.Web.Proxy/Options/ProxyProfileSettings.cs b/src/Titanium.Web.Proxy/Options/ProxyProfileSettings.cs index 67f33a614..fc5b4c26f 100644 --- a/src/Titanium.Web.Proxy/Options/ProxyProfileSettings.cs +++ b/src/Titanium.Web.Proxy/Options/ProxyProfileSettings.cs @@ -76,7 +76,8 @@ private ProxyProfileSettings() headerLimits: PolicyMode.Enforce, admissionControl: PolicyMode.Enforce, http2AbuseBudget: PolicyMode.Enforce, - http2RelayValidation: PolicyMode.Disabled), + http2RelayValidation: PolicyMode.Disabled, + http1ReplaySafety: PolicyMode.Observe), SupportedSslProtocols = SslProtocols.Tls12 | SslProtocols.Tls13, BlockPrivateNetworkDestinations = false, MaxConcurrentClientConnections = null, @@ -111,7 +112,8 @@ private ProxyProfileSettings() headerLimits: PolicyMode.Observe, admissionControl: PolicyMode.Observe, http2AbuseBudget: PolicyMode.Observe, - http2RelayValidation: PolicyMode.Disabled), + http2RelayValidation: PolicyMode.Disabled, + http1ReplaySafety: PolicyMode.Observe), #pragma warning disable SYSLIB0039 // Deliberate legacy-TLS opt-in for 4.x migrators, per this profile's purpose. SupportedSslProtocols = SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Tls12 | SslProtocols.Tls13, // NOSONAR S4423 - Compatible profile intentionally enables TLS 1.0/1.1 for migration #pragma warning restore SYSLIB0039 diff --git a/src/Titanium.Web.Proxy/PublicAPI.Shipped.txt b/src/Titanium.Web.Proxy/PublicAPI.Shipped.txt index 5d66f97ee..bd8abf76f 100644 --- a/src/Titanium.Web.Proxy/PublicAPI.Shipped.txt +++ b/src/Titanium.Web.Proxy/PublicAPI.Shipped.txt @@ -103,7 +103,7 @@ static Titanium.Web.Proxy.Models.HttpHeader.Encoding.get -> System.Text.Encoding static Titanium.Web.Proxy.Models.ProxyAuthenticationContext.Failed() -> Titanium.Web.Proxy.Models.ProxyAuthenticationContext! static Titanium.Web.Proxy.Models.ProxyAuthenticationContext.Succeeded() -> Titanium.Web.Proxy.Models.ProxyAuthenticationContext! static Titanium.Web.Proxy.Options.ProxyPolicyModes.AllEnforce.get -> Titanium.Web.Proxy.Options.ProxyPolicyModes! -static Titanium.Web.Proxy.Options.ProxyPolicyModes.Create(Titanium.Web.Proxy.Options.PolicyMode bodyBudget, Titanium.Web.Proxy.Options.PolicyMode decompressionRatio, Titanium.Web.Proxy.Options.PolicyMode headerLimits, Titanium.Web.Proxy.Options.PolicyMode admissionControl, Titanium.Web.Proxy.Options.PolicyMode http2AbuseBudget, Titanium.Web.Proxy.Options.PolicyMode http2RelayValidation = Titanium.Web.Proxy.Options.PolicyMode.Disabled) -> Titanium.Web.Proxy.Options.ProxyPolicyModes! +static Titanium.Web.Proxy.Options.ProxyPolicyModes.Create(Titanium.Web.Proxy.Options.PolicyMode bodyBudget, Titanium.Web.Proxy.Options.PolicyMode decompressionRatio, Titanium.Web.Proxy.Options.PolicyMode headerLimits, Titanium.Web.Proxy.Options.PolicyMode admissionControl, Titanium.Web.Proxy.Options.PolicyMode http2AbuseBudget, Titanium.Web.Proxy.Options.PolicyMode http2RelayValidation = Titanium.Web.Proxy.Options.PolicyMode.Disabled, Titanium.Web.Proxy.Options.PolicyMode http1ReplaySafety = Titanium.Web.Proxy.Options.PolicyMode.Observe) -> Titanium.Web.Proxy.Options.ProxyPolicyModes! static Titanium.Web.Proxy.Options.ProxyProfileSettings.Balanced.get -> Titanium.Web.Proxy.Options.ProxyProfileSettings! static Titanium.Web.Proxy.Options.ProxyProfileSettings.For(Titanium.Web.Proxy.Options.ProxyProfile profile) -> Titanium.Web.Proxy.Options.ProxyProfileSettings! static Titanium.Web.Proxy.Options.ProxyProfileSettings.LegacyCompatible.get -> Titanium.Web.Proxy.Options.ProxyProfileSettings! @@ -670,6 +670,7 @@ Titanium.Web.Proxy.Options.PolicyFamily.DecompressionRatio = 1 -> Titanium.Web.P Titanium.Web.Proxy.Options.PolicyFamily.HeaderLimits = 2 -> Titanium.Web.Proxy.Options.PolicyFamily Titanium.Web.Proxy.Options.PolicyFamily.Http2AbuseBudget = 4 -> Titanium.Web.Proxy.Options.PolicyFamily Titanium.Web.Proxy.Options.PolicyFamily.Http2RelayValidation = 5 -> Titanium.Web.Proxy.Options.PolicyFamily +Titanium.Web.Proxy.Options.PolicyFamily.Http1ReplaySafety = 6 -> Titanium.Web.Proxy.Options.PolicyFamily Titanium.Web.Proxy.Options.PolicyMode Titanium.Web.Proxy.Options.PolicyMode.Disabled = 0 -> Titanium.Web.Proxy.Options.PolicyMode Titanium.Web.Proxy.Options.PolicyMode.Enforce = 2 -> Titanium.Web.Proxy.Options.PolicyMode diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2BufferedSendOrderingTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2BufferedSendOrderingTests.cs index a8124fbd0..b9b1418c3 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/Http2BufferedSendOrderingTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2BufferedSendOrderingTests.cs @@ -243,4 +243,85 @@ public async Task SendBufferedRequestAfterAdmission_Cancelled_StillAdmits() Assert.AreEqual(0, origin.Length); Assert.IsTrue(admitted.Task.IsCompletedSuccessfully); } + + [TestMethod] + public async Task SendBody_WithTrailers_EmitsHeadersDataThenTrailersEndStream() + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + var settings = new Http2Settings { MaxFrameSize = 16384 }; + var flow = new Http2FlowController(); + flow.RegisterStream(1); + using var ms = new MemoryStream(); + using var gate = new SemaphoreSlim(1, 1); + + var request = NewBufferedPost("/trail", "body"); + request.TrailingHeaders.AddHeader("grpc-status", "0"); + + await using (var writer = new Http2FrameWriter(ms, gate)) + { + state.ServerFrameWriter = writer; + await Http2Helper.SendBody(state, towardServer: true, settings, request, + new Http2FrameHeader { StreamId = 1 }, new byte[9], 16384, flow, ms, + CancellationToken.None, gate); + } + + var frames = ParseFrames(ms.ToArray()); + Assert.IsTrue(frames.Count >= 3, $"Expected HEADERS+DATA+trailer HEADERS, got {frames.Count}"); + Assert.AreEqual((byte)Http2FrameType.Headers, frames[0].Type); + Assert.AreEqual(0, frames[0].Flags & 0x1, "First HEADERS must not set END_STREAM when trailers follow."); + Assert.AreEqual((byte)Http2FrameType.Data, frames[1].Type); + Assert.AreEqual(0, frames[1].Flags & 0x1, "DATA must not set END_STREAM when trailers follow."); + var trailer = frames[^1]; + Assert.AreEqual((byte)Http2FrameType.Headers, trailer.Type); + Assert.AreEqual(0x1, trailer.Flags & 0x1, "Trailer HEADERS must set END_STREAM."); + } + + [TestMethod] + public async Task SendBody_ResponseWithTrailers_AfterDeferredHeaders_TrailersFollowData() + { + using var cts = new CancellationTokenSource(); + var state = new Http2ConnectionState(1, cts); + var settings = new Http2Settings { MaxFrameSize = 16384 }; + var flow = new Http2FlowController(); + flow.RegisterStream(1); + using var ms = new MemoryStream(); + using var gate = new SemaphoreSlim(1, 1); + + var response = new Response + { + HttpVersion = HttpHeader.Version20, + StatusCode = 200, + Body = Encoding.ASCII.GetBytes("ok"), + IsBodyRead = true + }; + response.TrailingHeaders.AddHeader("x-trailer", "v"); + + await using (var writer = new Http2FrameWriter(ms, gate)) + { + state.ClientFrameWriter = writer; + await Http2Helper.SendBody(state, towardServer: false, settings, response, + new Http2FrameHeader { StreamId = 1 }, new byte[9], 16384, flow, ms, + CancellationToken.None, gate); + } + + var types = ParseFrames(ms.ToArray()).Select(f => f.Type).ToArray(); + CollectionAssert.AreEqual(new byte[] + { + (byte)Http2FrameType.Headers, + (byte)Http2FrameType.Data, + (byte)Http2FrameType.Headers + }, types); + } + + [TestMethod] + public void TryReserve_UnknownStream_DoesNotInsertWindow() + { + var flow = new Http2FlowController(); + Assert.IsFalse(flow.TryReserve(99, 1)); + Assert.AreEqual(0, flow.TryReservePartial(99, 16)); + flow.RegisterStream(99); + flow.RemoveStream(99); + Assert.IsFalse(flow.TryReserve(99, 1)); + } } diff --git a/tests/Titanium.Web.Proxy.UnitTests/SonarGateCoverageBumpTests.cs b/tests/Titanium.Web.Proxy.UnitTests/SonarGateCoverageBumpTests.cs index 85fe389c4..3c5e43417 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/SonarGateCoverageBumpTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/SonarGateCoverageBumpTests.cs @@ -380,15 +380,18 @@ public void StatusCodeBytesAndShouldOmitHttp2Header_CoverCommonBranches() } var omit = typeof(Http2Helper).GetMethod("ShouldOmitHttp2Header", - BindingFlags.NonPublic | BindingFlags.Static)!; - Assert.IsTrue((bool)omit.Invoke(null, ["Upgrade".GetByteString()])!); - Assert.IsTrue((bool)omit.Invoke(null, ["Keep-Alive".GetByteString()])!); - Assert.IsTrue((bool)omit.Invoke(null, ["Proxy-Connection".GetByteString()])!); - Assert.IsTrue((bool)omit.Invoke(null, ["Transfer-Encoding".GetByteString()])!); - Assert.IsTrue((bool)omit.Invoke(null, ["te".GetByteString()])!); - Assert.IsTrue((bool)omit.Invoke(null, ["host".GetByteString()])!); - Assert.IsFalse((bool)omit.Invoke(null, ["content-length".GetByteString()])!); - Assert.IsFalse((bool)omit.Invoke(null, ["accept".GetByteString()])!); + BindingFlags.NonPublic | BindingFlags.Static, + null, [typeof(ByteString), typeof(ByteString)], null)!; + ByteString Empty = default; + Assert.IsTrue((bool)omit.Invoke(null, ["Upgrade".GetByteString(), Empty])!); + Assert.IsTrue((bool)omit.Invoke(null, ["Keep-Alive".GetByteString(), Empty])!); + Assert.IsTrue((bool)omit.Invoke(null, ["Proxy-Connection".GetByteString(), Empty])!); + Assert.IsTrue((bool)omit.Invoke(null, ["Transfer-Encoding".GetByteString(), Empty])!); + Assert.IsTrue((bool)omit.Invoke(null, ["te".GetByteString(), Empty])!); + Assert.IsFalse((bool)omit.Invoke(null, ["te".GetByteString(), "trailers".GetByteString()])!); + Assert.IsTrue((bool)omit.Invoke(null, ["host".GetByteString(), Empty])!); + Assert.IsFalse((bool)omit.Invoke(null, ["content-length".GetByteString(), Empty])!); + Assert.IsFalse((bool)omit.Invoke(null, ["accept".GetByteString(), Empty])!); } [TestMethod] @@ -816,6 +819,7 @@ public void Http2FlowController_ReserveEdgeBranches() Assert.IsTrue(flow.TryReserve(99, -1)); Assert.AreEqual(0, flow.TryReservePartial(1, 0)); Assert.AreEqual(0, flow.TryReservePartial(1, -1)); + flow.RegisterStream(7); Assert.IsTrue(flow.TryReserve(7, 100)); flow.OnInitialWindowSizeChanged(0); diff --git a/tests/Titanium.Web.Proxy.UnitTests/SonarNewCodeCoverageTests.cs b/tests/Titanium.Web.Proxy.UnitTests/SonarNewCodeCoverageTests.cs index 011ec9039..ca5e8d47d 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/SonarNewCodeCoverageTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/SonarNewCodeCoverageTests.cs @@ -1457,11 +1457,14 @@ public void Http2Helper_HpackStaticLiteralAndSkipHelpers() Assert.IsTrue(equals("Host"u8, "host"u8)); Assert.IsFalse(equals("ab"u8, "abc"u8)); - var omit = typeof(Http2Helper).GetMethod("ShouldOmitHttp2Header", PrivateStatic)!; - Assert.IsTrue((bool)omit.Invoke(null, ["Connection".GetByteString()])!); - Assert.IsTrue((bool)omit.Invoke(null, ["host".GetByteString()])!); - Assert.IsTrue((bool)omit.Invoke(null, ["te".GetByteString()])!); - Assert.IsFalse((bool)omit.Invoke(null, ["accept".GetByteString()])!); + var omit = typeof(Http2Helper).GetMethod("ShouldOmitHttp2Header", PrivateStatic, + binder: null, [typeof(ByteString), typeof(ByteString)], modifiers: null)!; + ByteString Empty = default; + Assert.IsTrue((bool)omit.Invoke(null, ["Connection".GetByteString(), Empty])!); + Assert.IsTrue((bool)omit.Invoke(null, ["host".GetByteString(), Empty])!); + Assert.IsTrue((bool)omit.Invoke(null, ["te".GetByteString(), Empty])!); + Assert.IsFalse((bool)omit.Invoke(null, ["te".GetByteString(), "trailers".GetByteString()])!); + Assert.IsFalse((bool)omit.Invoke(null, ["accept".GetByteString(), Empty])!); var schemeByte = typeof(Http2Helper).GetMethod("StaticIndexedSchemeByte", PrivateStatic)!; Assert.AreNotEqual((byte)0, (byte)schemeByte.Invoke(null, [ProxyServer.UriSchemeHttp8])!); From d77e847ebcb951da32634798f1e7f50335dcbb0b Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 05:33:20 +0530 Subject: [PATCH 07/17] perf(http2): observe frame-writer depth; drop AssignStreamAsync and body-write ReserveAsync HOL MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add soft/warn/critical watermark metrics on Http2FrameWriter (no hard bound yet — slow-consumer compare-arch stays ~parity with YARP; deferred DATA already caps per-stream backlog). Gate-off cold origin assign no longer awaits on the frame loop (TryAssignStreamWithoutOpen + PendingOriginAssignments). Body-write QueueSendData defers when short on window instead of parking ReserveAsync on the shared reader. --- .../Diagnostics/ProxyMetrics.cs | 20 +++++ .../Http2/Http2ConnectionState.cs | 7 ++ .../Http2/Http2FrameWriter.cs | 51 ++++++++++++ .../Http2/Http2Helper.Copy.Relay.cs | 45 +++++++++-- .../Http2/Http2Helper.Copy.cs | 33 ++++++-- .../Http2/Http2Helper.Send.cs | 78 +++++++++++++++++-- .../Http2/Http2OriginRelayPool.cs | 50 +++++++++++- .../Http2FrameWriterWatermarkTests.cs | 67 ++++++++++++++++ 8 files changed, 329 insertions(+), 22 deletions(-) create mode 100644 tests/Titanium.Web.Proxy.UnitTests/Http2FrameWriterWatermarkTests.cs diff --git a/src/Titanium.Web.Proxy/Diagnostics/ProxyMetrics.cs b/src/Titanium.Web.Proxy/Diagnostics/ProxyMetrics.cs index ca3f11f8b..f52df0639 100644 --- a/src/Titanium.Web.Proxy/Diagnostics/ProxyMetrics.cs +++ b/src/Titanium.Web.Proxy/Diagnostics/ProxyMetrics.cs @@ -208,4 +208,24 @@ public static void Http2ProbeCompleted(double durationMs) => Http2ProbeDurationMs.Record(durationMs); public static void Http2CapabilityMismatch() => Http2CapabilityMismatches.Add(1); + + private static readonly Histogram Http2FrameWriterPending = + Meter.CreateHistogram("twp.http2.frame_writer.pending_frames", "{frame}", + "Frames queued on an HTTP/2 frame writer when a sample is recorded (enqueue high-water crossings)."); + + private static readonly Counter Http2FrameWriterHighWater = + Meter.CreateCounter("twp.http2.frame_writer.high_water_crossings", "{crossing}", + "Times an HTTP/2 frame-writer pending depth crossed a watermark threshold."); + + /// + /// Records a frame-writer queue-depth sample when a high-water threshold is crossed. + /// Call sites sample sparsely (threshold crossings only) so the hot enqueue path stays cheap. + /// + public static void Http2FrameWriterDepthSample(long pendingFrames, string threshold) => + Http2FrameWriterPending.Record(pendingFrames, + new KeyValuePair("threshold", threshold)); + + public static void Http2FrameWriterHighWaterCrossed(string threshold) => + Http2FrameWriterHighWater.Add(1, + new KeyValuePair("threshold", threshold)); } diff --git a/src/Titanium.Web.Proxy/Http2/Http2ConnectionState.cs b/src/Titanium.Web.Proxy/Http2/Http2ConnectionState.cs index f324b04c2..c7e3ad7dc 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2ConnectionState.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2ConnectionState.cs @@ -95,6 +95,13 @@ public Http2ConnectionState(long connectionId, CancellationTokenSource cancellat /// public Http2OriginRelayPool? OriginRelayPool { get; set; } + /// + /// Client stream id → in-flight (cold + /// leg open). The gate-off frame loop must not await these; DATA awaits the task before + /// looking up the assignment so HEADERS cannot race DATA onto the wrong writer. + /// + public ConcurrentDictionary PendingOriginAssignments { get; } = new(); + /// Completed once the server's connection SETTINGS frame has been relayed to the client. public TaskCompletionSource ServerSettingsRelayed { get; } = new(TaskCreationOptions.RunContinuationsAsynchronously); diff --git a/src/Titanium.Web.Proxy/Http2/Http2FrameWriter.cs b/src/Titanium.Web.Proxy/Http2/Http2FrameWriter.cs index ace95cfbf..b29f481ff 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2FrameWriter.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2FrameWriter.cs @@ -3,6 +3,7 @@ using System.Threading; using System.Threading.Channels; using System.Threading.Tasks; +using Titanium.Web.Proxy.Diagnostics; namespace Titanium.Web.Proxy.Http2; @@ -25,6 +26,11 @@ internal sealed class Http2FrameWriter : IAsyncDisposable private const int CoalesceByteBudget = 288 * 1024; private const int CoalesceMaxFrames = 64; + // Watermark thresholds for Metrics (sparse samples on crossing only — not every enqueue). + private const int WatermarkSoft = 64; + private const int WatermarkWarn = 256; + private const int WatermarkCritical = 1024; + private readonly Channel> channel; private readonly System.IO.Stream output; private readonly SemaphoreSlim? writeLock; @@ -33,6 +39,9 @@ internal sealed class Http2FrameWriter : IAsyncDisposable // SingleReader drain: reuse coalesce scratch (avoids new ArraySegment[64] under multiplex). private readonly ArraySegment[] coalesceFrames = new ArraySegment[CoalesceMaxFrames]; private int disposed; + private int pendingFrames; + private int highWaterMark; + private int watermarkTierCrossed; // bit0=soft, bit1=warn, bit2=critical (per writer lifetime) public Http2FrameWriter(System.IO.Stream output, SemaphoreSlim? writeLock = null) { @@ -49,6 +58,12 @@ public Http2FrameWriter(System.IO.Stream output, SemaphoreSlim? writeLock = null drainTask = Task.Run(() => DrainAsync(cts.Token), cts.Token); } + /// Frames currently sitting in the channel (approximate; for tests/metrics). + public int PendingFrameCount => Volatile.Read(ref pendingFrames); + + /// Peak pending depth observed on this writer. + public int HighWaterMark => Volatile.Read(ref highWaterMark); + /// /// Enqueues a rented buffer for write. Ownership transfers; the buffer is returned to /// after the write (or on writer fault/dispose). @@ -61,8 +76,41 @@ public void EnqueueRented(byte[] rented, int length) return; } + var depth = Interlocked.Increment(ref pendingFrames); + // Relaxed high-water: races under count by at most one sample — fine for metrics. + var hw = highWaterMark; + if (depth > hw) + Interlocked.CompareExchange(ref highWaterMark, depth, hw); + + ObserveWatermarkCrossing(depth); + if (!channel.Writer.TryWrite(new ArraySegment(rented, 0, length))) + { + Interlocked.Decrement(ref pendingFrames); ArrayPool.Shared.Return(rented); + } + } + + private void ObserveWatermarkCrossing(int depth) + { + // Sparse: only the first crossing of each tier per writer lifetime. + if (depth >= WatermarkCritical) + RecordTier(0b100, "critical", depth); + else if (depth >= WatermarkWarn) + RecordTier(0b010, "warn", depth); + else if (depth >= WatermarkSoft) + RecordTier(0b001, "soft", depth); + } + + private void RecordTier(int bit, string name, int depth) + { + var prev = watermarkTierCrossed; + if ((prev & bit) != 0) + return; + if (Interlocked.CompareExchange(ref watermarkTierCrossed, prev | bit, prev) != prev) + return; + ProxyMetrics.Http2FrameWriterHighWaterCrossed(name); + ProxyMetrics.Http2FrameWriterDepthSample(depth, name); } public Task Completion => drainTask; @@ -87,6 +135,7 @@ public void EnqueueRented(byte[] rented, int length) while (reader.TryRead(out var first)) { + Interlocked.Decrement(ref pendingFrames); try { // Second grace after taking first frame — next writeLock holder may enqueue. @@ -116,6 +165,7 @@ public void EnqueueRented(byte[] rented, int length) && total < CoalesceByteBudget && reader.TryRead(out var next)) { + Interlocked.Decrement(ref pendingFrames); frames[count++] = next; total += next.Count; } @@ -169,6 +219,7 @@ public void EnqueueRented(byte[] rented, int length) { while (reader.TryRead(out var leftover)) { + Interlocked.Decrement(ref pendingFrames); if (leftover.Array != null) ArrayPool.Shared.Return(leftover.Array); } diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Relay.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Relay.cs index 5457e255c..b9d20a312 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Relay.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Relay.cs @@ -118,7 +118,7 @@ private static Task RelayCompressedHeaderBlockAsync( // NOSONAR S107 -- Relay co return Task.CompletedTask; } - private static async Task RelayCompressedWithOriginPoolAsync( // NOSONAR S107 -- Origin-pool assignment args stay explicit. + private static Task RelayCompressedWithOriginPoolAsync( // NOSONAR S107 -- Origin-pool assignment args stay explicit. Http2ConnectionState connectionState, bool isClient, Http2Settings remoteSettings, @@ -126,11 +126,44 @@ private static async Task RelayCompressedWithOriginPoolAsync( // NOSONAR S107 -- int hbStreamId, ReadOnlyMemory blockToRelay, bool endStreamFlag, byte[]? appendSuffix) { - var assignment = await connectionState.OriginRelayPool! // NOSONAR S8969 -- Caller already gated OriginRelayPool != null. - .AssignStreamAsync(hbStreamId, cancellationToken).ConfigureAwait(false); - EnqueueRelayedHeaderBlock(connectionState, isClient, remoteSettings, - assignment.OriginStreamId, blockToRelay, endStreamFlag, appendSuffix, - assignment.Leg.Writer, assignment.Leg.WriteLock, assignment.Leg.Stream); + // Warm path: existing assignment or capacity on an open leg — sync enqueue, no frame-loop await. + if (connectionState.OriginRelayPool!.TryAssignStreamWithoutOpen(hbStreamId, out var assignment)) + { + EnqueueRelayedHeaderBlock(connectionState, isClient, remoteSettings, + assignment.OriginStreamId, blockToRelay, endStreamFlag, appendSuffix, + assignment.Leg.Writer, assignment.Leg.WriteLock, assignment.Leg.Stream); + return Task.CompletedTask; + } + + // Cold path: may open a new TCP+H2 origin leg. Never run that await on the shared frame + // reader — publish a pending task so DATA waits for assignment instead. + return AssignOriginAndEnqueueAsync(connectionState, isClient, remoteSettings, cancellationToken, + hbStreamId, blockToRelay, endStreamFlag, appendSuffix); + } + + private static async Task AssignOriginAndEnqueueAsync( + Http2ConnectionState connectionState, + bool isClient, + Http2Settings remoteSettings, + CancellationToken cancellationToken, + int hbStreamId, ReadOnlyMemory blockToRelay, + bool endStreamFlag, byte[]? appendSuffix) + { + var assignTask = connectionState.OriginRelayPool! + .AssignStreamAsync(hbStreamId, cancellationToken); + var tracked = assignTask.AsTask(); + connectionState.PendingOriginAssignments[hbStreamId] = tracked; + try + { + var assignment = await assignTask.ConfigureAwait(false); + EnqueueRelayedHeaderBlock(connectionState, isClient, remoteSettings, + assignment.OriginStreamId, blockToRelay, endStreamFlag, appendSuffix, + assignment.Leg.Writer, assignment.Leg.WriteLock, assignment.Leg.Stream); + } + finally + { + connectionState.PendingOriginAssignments.TryRemove(hbStreamId, out _); + } } private static async Task RelayCompressedWithSchemeDecodeAsync( // NOSONAR S107 -- Scheme-decode fallback keeps the same explicit relay signature as the fast path. diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs index 9635d171a..34e970c2f 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs @@ -924,6 +924,16 @@ await lockedOwnLegWrite(() => SendRstStreamAsync(new Http2FrameHeader(), await dataDispatch; } + // Gate-off multi-origin: cold AssignStreamAsync is published off the frame loop. DATA + // must wait for that assignment before TryGetAssignment / remapped send. + if (type == Http2FrameType.Data + && isClient + && connectionState.PendingOriginAssignments.TryGetValue(streamId, out var pendingOrigin) + && !pendingOrigin.IsCompleted) + { + await pendingOrigin; + } + if (type == Http2FrameType.Data && existingStreamState == null) { // DATA is flow-controlled at the connection level even when it arrives @@ -1054,11 +1064,15 @@ await lockedOwnLegWrite(() => SendRstStreamAsync( { var fragment = new byte[fragmentLength]; Buffer.BlockCopy(buffer, offset, fragment, 0, fragmentLength); - await RelayCompressedHeaderBlockAsync( + var relayTask = RelayCompressedHeaderBlockAsync( connectionState, input, output, outputWriteLock, ownLegWriteLock, originReceiveLeg, compressedRelaySchemeOverride, isClient, cancellationToken, hpack, remoteSettings, maxDecodedHeaderListBytes, logger, removeAndFinalizeStream, streamId, fragment, endStreamFlag); + // Warm assign / verbatim enqueue completes inline. Cold origin open must + // not HOL this frame reader — DATA awaits PendingOriginAssignments. + if (!relayTask.IsCompletedSuccessfully) + connectionState.PendingSynthetics.Track(relayTask); if (endStreamFlag) endStream = true; } @@ -1246,11 +1260,13 @@ await pendingHeaderBlock.WriteAsync(buffer.AsMemory(offset, fragmentLength), if (pCompressedRelay) { - await RelayCompressedHeaderBlockAsync( + var relayTask = RelayCompressedHeaderBlockAsync( connectionState, input, output, outputWriteLock, ownLegWriteLock, originReceiveLeg, compressedRelaySchemeOverride, isClient, cancellationToken, hpack, remoteSettings, maxDecodedHeaderListBytes, logger, removeAndFinalizeStream, pStreamId, completeBlock, pEndStream); + if (!relayTask.IsCompletedSuccessfully) + connectionState.PendingSynthetics.Track(relayTask); if (pEndStream) endStream = true; } @@ -1618,13 +1634,14 @@ await lockedOwnLegWrite(() => SendRstStreamAsync( // empty+END_STREAM must still be framed (trailers / bodiless end). if (outBytes.Length > 0 || endStreamFlag) { - // Queue on the same FIFO as QueueSendHeader. A direct SendData write can - // overtake MITM-re-encoded HEADERS still sitting on ClientFrameWriter / - // ServerFrameWriter (Inspector always subscribes OnResponseBodyWrite), - // which Chrome treats as DATA on an idle stream (PROTOCOL_ERROR). - await QueueSendData(connectionState, towardServer: isClient, outputWriteLock, + // Queue on the same FIFO as QueueSendHeader. Never await ReserveAsync on + // the frame loop (HOL for WINDOW_UPDATE / other streams); defer when short. + var bodyDeferred = isClient + ? connectionState.ServerOutboundDeferred + : connectionState.ClientOutboundDeferred; + QueueSendData(connectionState, towardServer: isClient, outputWriteLock, streamId, outBytes, endStreamFlag, remoteSettings.MaxFrameSize, outboundFlow, - output, cancellationToken); + bodyDeferred, output); } // we have emitted our own (possibly re-sized) DATA frame(s); suppress the default relay diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs index 15021ff5c..0f5558ddb 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs @@ -112,13 +112,10 @@ private static void QueueDataFrame(Http2ConnectionState connectionState, Stream clientStream, streamId, payload, endStream); /// - /// Same framing and flow-control reservation as , but the frames are - /// queued on the dedicated writer FIFO used by . The per-chunk - /// OnRequestBodyWrite/OnResponseBodyWrite path previously called - /// (direct locked write). That raced the MITM HEADERS enqueue: DATA could hit the peer socket - /// first, which Chrome treats as DATA on an idle stream (ERR_HTTP2_PROTOCOL_ERROR). + /// Off-loop variant used by : may await flow-control credit because it + /// does not run on the shared frame reader. /// - private static async ValueTask QueueSendData(Http2ConnectionState connectionState, bool towardServer, // NOSONAR S107 -- Frame-writing state is kept explicit for this low-level helper. + private static async ValueTask QueueSendDataAsync(Http2ConnectionState connectionState, bool towardServer, SemaphoreSlim writeLock, int streamId, ReadOnlyMemory data, bool endStream, int maxFrameSize, Http2FlowController flow, Stream output, CancellationToken cancellationToken) { @@ -143,6 +140,72 @@ private static void QueueDataFrame(Http2ConnectionState connectionState, Stream } } + /// + /// Same framing as , but frames are queued on the dedicated writer FIFO + /// used by . Never awaits : + /// parking the shared frame reader on credit would HOL-block WINDOW_UPDATE (and every other + /// stream). When credit is short, payload bytes go onto and drain + /// when the peer grants window — same shape as the compressed-relay DATA path. + /// + private static void QueueSendData(Http2ConnectionState connectionState, bool towardServer, + SemaphoreSlim writeLock, int streamId, ReadOnlyMemory data, bool endStream, int maxFrameSize, + Http2FlowController flow, Http2DeferredOutboundData deferred, Stream output) + { + if (maxFrameSize <= 0) maxFrameSize = 16384; + + if (data.Length == 0) + { + if (deferred.PendingCount(streamId) > 0) + { + // End-stream must not overtake deferred bytes. + var empty = ArrayPool.Shared.Rent(1); + if (!deferred.TryEnqueue(streamId, empty, 0, 0, endStream)) + ArrayPool.Shared.Return(empty); + return; + } + + QueueDataFrame(connectionState, towardServer, writeLock, output, streamId, + ReadOnlyMemory.Empty, endStream); + return; + } + + var pos = 0; + while (pos < data.Length) + { + var remaining = data.Length - pos; + var want = Math.Min(maxFrameSize, remaining); + var isLastSlice = pos + want >= data.Length; + + if (deferred.PendingCount(streamId) > 0) + { + var rented = ArrayPool.Shared.Rent(want); + data.Span.Slice(pos, want).CopyTo(rented); + if (!deferred.TryEnqueue(streamId, rented, 0, want, isLastSlice && endStream)) + ArrayPool.Shared.Return(rented); + pos += want; + continue; + } + + var reserved = flow.TryReservePartial(streamId, want); + if (reserved > 0) + { + QueueDataFrame(connectionState, towardServer, writeLock, output, streamId, + data.Slice(pos, reserved), isLastSlice && reserved == want && endStream); + pos += reserved; + } + + if (reserved < want) + { + var rem = want - reserved; + var rented = ArrayPool.Shared.Rent(rem); + data.Span.Slice(pos, rem).CopyTo(rented); + if (!deferred.TryEnqueue(streamId, rented, 0, rem, isLastSlice && endStream)) + ArrayPool.Shared.Return(rented); + pos += rem; + } + } + } + /// /// Queues a client-bound RST_STREAM through the same FIFO as the stream's queued HEADERS/DATA so /// it cannot overtake them on the wire (a direct locked write could). @@ -409,7 +472,8 @@ private static async ValueTask WriteHeaderBlockMultiAsync(Http2FrameHeader frame var maxFrameSize = settings.MaxFrameSize > 0 ? Math.Min(maxDataFrameSize, settings.MaxFrameSize) : maxDataFrameSize; - await QueueSendData(connectionState, towardServer, writeLock, streamId, body!, + // SendBody runs off the frame loop (admission / body-complete); awaiting credit is safe. + await QueueSendDataAsync(connectionState, towardServer, writeLock, streamId, body!, endStream: !hasTrailers, maxFrameSize, flow, output, cancellationToken) .ConfigureAwait(false); } diff --git a/src/Titanium.Web.Proxy/Http2/Http2OriginRelayPool.cs b/src/Titanium.Web.Proxy/Http2/Http2OriginRelayPool.cs index d719fad71..aa02879e2 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2OriginRelayPool.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2OriginRelayPool.cs @@ -56,6 +56,50 @@ public IReadOnlyList SnapshotLegs() lock (gate) return legs.ToArray(); } + /// + /// Assigns to an origin leg without opening a new connection. + /// Returns when every open leg is at soft capacity and a cold open is + /// required (caller must use off the frame loop). + /// + public bool TryAssignStreamWithoutOpen(int clientStreamId, out StreamAssignment assignment) + { + if (clientToOrigin.TryGetValue(clientStreamId, out assignment!)) + return true; + + OriginLeg? chosen; + lock (gate) + { + chosen = PickLegUnderLock(); + if (chosen == null || NeedsNewLeg(chosen)) + { + assignment = default!; + return false; + } + } + + int originStreamId; + lock (chosen.IdLock) + { + originStreamId = chosen.NextStreamId; + chosen.NextStreamId += 2; + chosen.ActiveStreams++; + } + + chosen.SendFlow.RegisterStream(originStreamId); + + assignment = new StreamAssignment(chosen, originStreamId); + if (!clientToOrigin.TryAdd(clientStreamId, assignment)) + { + chosen.SendFlow.RemoveStream(originStreamId); + lock (chosen.IdLock) chosen.ActiveStreams--; + assignment = clientToOrigin[clientStreamId]; + return true; + } + + chosen.OriginToClient[originStreamId] = clientStreamId; + return true; + } + /// /// Assigns to an origin leg, opening a new leg when every /// existing leg is at its soft capacity and the pool has room. @@ -63,7 +107,7 @@ public IReadOnlyList SnapshotLegs() public async ValueTask AssignStreamAsync(int clientStreamId, CancellationToken cancellationToken) { - if (clientToOrigin.TryGetValue(clientStreamId, out var existing)) + if (TryAssignStreamWithoutOpen(clientStreamId, out var existing)) return existing; OriginLeg? chosen; @@ -84,6 +128,10 @@ public async ValueTask AssignStreamAsync(int clientStreamId, lock (gate) chosen = PickLeastLoadedUnderLock(); } + // After a cold open (or while waiting), another racer may have assigned this stream. + if (clientToOrigin.TryGetValue(clientStreamId, out var raced)) + return raced; + int originStreamId; lock (chosen.IdLock) { diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2FrameWriterWatermarkTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2FrameWriterWatermarkTests.cs new file mode 100644 index 000000000..fa7133384 --- /dev/null +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2FrameWriterWatermarkTests.cs @@ -0,0 +1,67 @@ +using System; +using System.Buffers; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Titanium.Web.Proxy.Http2; + +namespace Titanium.Web.Proxy.UnitTests; + +[TestClass] +public class Http2FrameWriterWatermarkTests +{ + [TestMethod] + public async Task EnqueueAgainstStalledDrain_RaisesHighWaterPastSoftThreshold() + { + await using var stall = new StallStream(); + await using var writer = new Http2FrameWriter(stall); + + // First write blocks the drain on StallStream; subsequent frames pile up in the channel. + for (var i = 0; i < 80; i++) + { + var rented = ArrayPool.Shared.Rent(32); + writer.EnqueueRented(rented, 32); + } + + // Drain coalesces up to 64 frames into one WriteAsync that stalls; pending drops for those + // frames while HighWater still recorded the backlog peak. + Assert.IsTrue(SpinWait.SpinUntil(() => writer.HighWaterMark >= 64, TimeSpan.FromSeconds(2)), + $"expected high-water ≥ 64, got {writer.HighWaterMark}"); + Assert.IsTrue(writer.HighWaterMark >= writer.PendingFrameCount); + + stall.Release(); + await writer.DisposeAsync(); + } + + private sealed class StallStream : Stream + { + private readonly TaskCompletionSource gate = + new(TaskCreationOptions.RunContinuationsAsynchronously); + + public void Release() => gate.TrySetResult(true); + + public override async ValueTask WriteAsync(ReadOnlyMemory buffer, + CancellationToken cancellationToken = default) + { + await gate.Task.WaitAsync(cancellationToken); + } + + public override void Flush() { } + public override int Read(byte[] buffer, int offset, int count) => throw new NotSupportedException(); + public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException(); + public override void SetLength(long value) => throw new NotSupportedException(); + public override void Write(byte[] buffer, int offset, int count) => + WriteAsync(buffer.AsMemory(offset, count)).AsTask().GetAwaiter().GetResult(); + + public override bool CanRead => false; + public override bool CanSeek => false; + public override bool CanWrite => true; + public override long Length => throw new NotSupportedException(); + public override long Position + { + get => throw new NotSupportedException(); + set => throw new NotSupportedException(); + } + } +} From ffadce73d8fa625750dd1d7d5b0aa6d564ece4b7 Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 08:50:24 +0530 Subject: [PATCH 08/17] fix(http3): do not dispose QuicStream before StreamBodyWriter runs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ForwardOverQuicAsync returned and its finally released the handed-off QUIC stream while H2→H3 EmitSyntheticResponseAsync still needed to read it, causing ObjectDisposedException on api.x.com. Keep release ownership on StreamBodyWriter; drain to Stream.Null when BeforeResponse replaces the response. --- .../Handlers/Http2ToHttp3BridgeHandler.cs | 17 +++++++++++++++++ .../Http3/Http3OriginBridge.Quic.cs | 12 +++++++----- 2 files changed, 24 insertions(+), 5 deletions(-) diff --git a/src/Titanium.Web.Proxy/Handlers/Http2ToHttp3BridgeHandler.cs b/src/Titanium.Web.Proxy/Handlers/Http2ToHttp3BridgeHandler.cs index 866148b64..6ffd20680 100644 --- a/src/Titanium.Web.Proxy/Handlers/Http2ToHttp3BridgeHandler.cs +++ b/src/Titanium.Web.Proxy/Handlers/Http2ToHttp3BridgeHandler.cs @@ -324,7 +324,24 @@ await Http2Helper.EmitInterimResponseAsync( sessionArgs.HttpClient.Response.SetOriginalHeaders(); if (!sessionArgs.IsFastPath && !sessionArgs.HttpClient.Response.Locked) + { + var responseBeforeHandler = sessionArgs.HttpClient.Response; await OnBeforeResponse(sessionArgs); + // If BeforeResponse replaced the response, the QUIC StreamBodyWriter never runs — + // drain it so the origin stream/lease is released (same shape as H1→H2). + if (!ReferenceEquals(responseBeforeHandler, sessionArgs.HttpClient.Response) + && responseBeforeHandler.StreamBodyWriter != null) + { + try + { + await responseBeforeHandler.StreamBodyWriter(Stream.Null, cancellationToken); + } + catch + { + // Best-effort release of the QUIC stream/lease; emit path uses the new response. + } + } + } var response = sessionArgs.HttpClient.Response; diff --git a/src/Titanium.Web.Proxy/Http3/Http3OriginBridge.Quic.cs b/src/Titanium.Web.Proxy/Http3/Http3OriginBridge.Quic.cs index a8c74747b..d6ccabd12 100644 --- a/src/Titanium.Web.Proxy/Http3/Http3OriginBridge.Quic.cs +++ b/src/Titanium.Web.Proxy/Http3/Http3OriginBridge.Quic.cs @@ -553,11 +553,13 @@ await Http3Frame.WriteAsync(originStream, Http3FrameType.Data, body, cancellatio } finally { - // When StreamBodyWriter owns the stream/connection, it releases on completion. - // If the writer never started (response replaced / cancelled before emit), release here. - if (pendingHandoffRelease != null) - await pendingHandoffRelease(); - else if (!streamHandedOff && quicConn != null) + // When StreamBodyWriter owns the stream/connection, only that writer may release. + // Calling pendingHandoffRelease here races EmitSyntheticResponseAsync / the bridge body + // pump: ForwardOverQuicAsync returns before StreamBodyWriter runs, so an eager release + // disposes QuicStream under the reader (ObjectDisposedException → H2→H3 stream failure, + // observed on api.x.com 2026-10-01). Callers that replace the response without invoking + // StreamBodyWriter must drain it to Stream.Null (see H2→H3 bridge After BeforeResponse). + if (!streamHandedOff && quicConn != null) await QuicConnectionPool.ReleaseAsync(quicConn); } } From 592d908230327a7969be235091e45f9c599d0f7b Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 09:08:13 +0530 Subject: [PATCH 09/17] Fix H2 MITM hangs: response DATA gate vs GetResponseBody, hook END_STREAM deferral, pooled CTS - Gate response DATA on a dedicated off-loop dispatch task (Http2ResponseDispatchGate); gating on the raw BeforeResponse handler deadlocked handlers awaiting GetResponseBody (Inspector) on the inline path. - Body-write hook: QueueSendData reports EndStreamDeferred/CapExceeded; do not half-close/RemoveStream while END_STREAM is parked behind client window (RemoveStream cancels the deferred queue), RST on cap. - Http2StreamState.PrepareForPool tolerates an already-disposed CancellationTokenSource. - Regression tests: BeforeResponse GetResponseBody + hook, body larger than client window, disposed CTS. --- .../Http/RequestResponseBase.cs | 9 ++ .../Http2/Http2Helper.Copy.Headers.cs | 1 + .../Http2/Http2Helper.Copy.cs | 26 ++++- .../Http2/Http2Helper.Send.cs | 39 ++++++- .../Http2/Http2StreamState.cs | 37 +++++-- .../Http2BodyWriteHookFrameOrderTests.cs | 100 ++++++++++++++++++ .../Http2StreamStatePoolTests.cs | 17 +++ 7 files changed, 210 insertions(+), 19 deletions(-) diff --git a/src/Titanium.Web.Proxy/Http/RequestResponseBase.cs b/src/Titanium.Web.Proxy/Http/RequestResponseBase.cs index 65df396e6..ef4bde99e 100644 --- a/src/Titanium.Web.Proxy/Http/RequestResponseBase.cs +++ b/src/Titanium.Web.Proxy/Http/RequestResponseBase.cs @@ -29,6 +29,14 @@ public abstract class RequestResponseBase internal Task? Http2BeforeHandlerTask; + /// + /// Off-loop (static-HPACK MITM) response dispatch only: completes as soon as HEADERS are queued or the + /// handler asked for the body, never when the user handler itself finishes. The frame loop gates DATA + /// on this; gating on would deadlock a handler awaiting + /// GetResponseBody on the inline (dynamic-HPACK / bridge) path, where that task is the raw handler. + /// + internal Task? Http2ResponseDispatchGate; + internal MemoryStream? Http2BodyData; internal bool Http2IgnoreBodyFrames; @@ -433,6 +441,7 @@ internal void ResetWireState() OriginalContentEncoding = null; HttpVersion = HttpHeader.VersionUnknown; Http2BeforeHandlerTask = null; + Http2ResponseDispatchGate = null; Http2BodyData?.Dispose(); Http2BodyData = null; Http2IgnoreBodyFrames = false; diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs index c58971beb..ea23fb4a5 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.Headers.cs @@ -1283,6 +1283,7 @@ await RelayCompressedHeaderBlockAsync( { var dispatchTask = StartMitmStaticResponseDispatch(); response.Http2BeforeHandlerTask = dispatchTask; + response.Http2ResponseDispatchGate = dispatchTask; pendingSynthetics.Track(dispatchTask); return false; } diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs index 34e970c2f..a6fb98ef7 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs @@ -898,6 +898,7 @@ await lockedOwnLegWrite(() => SendRstStreamAsync(new Http2FrameHeader(), } bool sendPacket = true; + bool hookEndStreamDeferred = false; bool endStream = false; SessionEventArgs? args = null; @@ -919,7 +920,7 @@ await lockedOwnLegWrite(() => SendRstStreamAsync(new Http2FrameHeader(), if (type == Http2FrameType.Data && (isClient ? args?.HttpClient.Request.Http2BeforeHandlerTask - : args?.HttpClient.Response.Http2BeforeHandlerTask) is { IsCompleted: false } dataDispatch) + : args?.HttpClient.Response.Http2ResponseDispatchGate) is { IsCompleted: false } dataDispatch) { await dataDispatch; } @@ -1639,9 +1640,24 @@ await lockedOwnLegWrite(() => SendRstStreamAsync( var bodyDeferred = isClient ? connectionState.ServerOutboundDeferred : connectionState.ClientOutboundDeferred; - QueueSendData(connectionState, towardServer: isClient, outputWriteLock, - streamId, outBytes, endStreamFlag, remoteSettings.MaxFrameSize, outboundFlow, - bodyDeferred, output); + var queued = QueueSendData(connectionState, towardServer: isClient, + outputWriteLock, streamId, outBytes, endStreamFlag, remoteSettings.MaxFrameSize, + outboundFlow, bodyDeferred, output); + if (queued == QueueSendDataResult.EndStreamDeferred) + { + // Last byte is parked behind send-window credit: the WINDOW_UPDATE drain + // (OnDeferredEndStream) half-closes. Closing here would RemoveStream, + // which cancels the deferred queue and the flow window → stream never ends. + hookEndStreamDeferred = true; + } + else if (queued == QueueSendDataResult.CapExceeded) + { + ReportException(logger, new ProxyHttpException( + "HTTP/2 deferred DATA queue exceeded its per-stream cap.", null, args)); + await lockedOwnLegWrite(() => SendRstStreamAsync(new Http2FrameHeader(), + new byte[9], streamId, Http2ErrorCode.EnhanceYourCalm, input)); + RemoveAndFinalizeStream(streamId); + } } // we have emitted our own (possibly re-sized) DATA frame(s); suppress the default relay @@ -2523,7 +2539,7 @@ await SendBody(connectionState, towardServer: isClient, remoteSettings, rr, // half-close / finalize until the last byte is actually queued (see sendPacket / // OnDeferredEndStream). Non-DATA END_STREAM (HEADERS) and DATA that is not forwarded // still close here. - if (endStream && (type != Http2FrameType.Data || !sendPacket)) + if (endStream && !hookEndStreamDeferred && (type != Http2FrameType.Data || !sendPacket)) { if (isClient) connectionState.MultipartObservers.TryRemove(streamId, out _); diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs index 0f5558ddb..eb0948a6c 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Send.cs @@ -146,12 +146,20 @@ private static async ValueTask QueueSendDataAsync(Http2ConnectionState connectio /// parking the shared frame reader on credit would HOL-block WINDOW_UPDATE (and every other /// stream). When credit is short, payload bytes go onto and drain /// when the peer grants window — same shape as the compressed-relay DATA path. + /// + /// : END_STREAM is parked on + /// ; the caller must not half-close / RemoveStream (that cancels + /// the deferred queue and drops the flow window) — the drain's end-stream callback closes. + /// : the per-stream cap rejected bytes; the caller + /// must reset the stream (silently dropping them would hang the peer). + /// /// - private static void QueueSendData(Http2ConnectionState connectionState, bool towardServer, + private static QueueSendDataResult QueueSendData(Http2ConnectionState connectionState, bool towardServer, SemaphoreSlim writeLock, int streamId, ReadOnlyMemory data, bool endStream, int maxFrameSize, Http2FlowController flow, Http2DeferredOutboundData deferred, Stream output) { if (maxFrameSize <= 0) maxFrameSize = 16384; + var result = QueueSendDataResult.Sent; if (data.Length == 0) { @@ -160,13 +168,17 @@ private static void QueueSendData(Http2ConnectionState connectionState, bool tow // End-stream must not overtake deferred bytes. var empty = ArrayPool.Shared.Rent(1); if (!deferred.TryEnqueue(streamId, empty, 0, 0, endStream)) + { ArrayPool.Shared.Return(empty); - return; + return QueueSendDataResult.CapExceeded; + } + + return endStream ? QueueSendDataResult.EndStreamDeferred : QueueSendDataResult.Sent; } QueueDataFrame(connectionState, towardServer, writeLock, output, streamId, ReadOnlyMemory.Empty, endStream); - return; + return QueueSendDataResult.Sent; } var pos = 0; @@ -181,7 +193,13 @@ private static void QueueSendData(Http2ConnectionState connectionState, bool tow var rented = ArrayPool.Shared.Rent(want); data.Span.Slice(pos, want).CopyTo(rented); if (!deferred.TryEnqueue(streamId, rented, 0, want, isLastSlice && endStream)) + { ArrayPool.Shared.Return(rented); + return QueueSendDataResult.CapExceeded; + } + + if (isLastSlice && endStream) + result = QueueSendDataResult.EndStreamDeferred; pos += want; continue; } @@ -200,10 +218,25 @@ private static void QueueSendData(Http2ConnectionState connectionState, bool tow var rented = ArrayPool.Shared.Rent(rem); data.Span.Slice(pos, rem).CopyTo(rented); if (!deferred.TryEnqueue(streamId, rented, 0, rem, isLastSlice && endStream)) + { ArrayPool.Shared.Return(rented); + return QueueSendDataResult.CapExceeded; + } + + if (isLastSlice && endStream) + result = QueueSendDataResult.EndStreamDeferred; pos += rem; } } + + return result; + } + + private enum QueueSendDataResult + { + Sent, + EndStreamDeferred, + CapExceeded, } /// diff --git a/src/Titanium.Web.Proxy/Http2/Http2StreamState.cs b/src/Titanium.Web.Proxy/Http2/Http2StreamState.cs index cff942eb3..3d7f7e6cd 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2StreamState.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2StreamState.cs @@ -191,25 +191,40 @@ internal void PrepareForPool() SessionArgs = null; // Prefer TryReset over dispose+new: compressed-relay streams churn one CTS per request // otherwise (Cancel on finalize path, then Return). - if (!Cancellation.TryReset()) - { - try { Cancellation.Dispose(); } - catch { /* ignore */ } - Cancellation = new CancellationTokenSource(); - } + ReplaceCancellationIfNotResettable(); ResetMutableFields(preserveCancellation: true); } - private void ResetMutableFields(bool preserveCancellation = false) + /// + /// RST / protocol-error teardown disposes the non-relay CTS before finalize returns the state to + /// the pool; throws on a disposed instance. + /// + private void ReplaceCancellationIfNotResettable() { - if (!preserveCancellation && !Cancellation.TryReset()) + bool reset; + try + { + reset = Cancellation.TryReset(); + } + catch (ObjectDisposedException) { - try { Cancellation.Dispose(); } - catch { /* ignore */ } - Cancellation = new CancellationTokenSource(); + reset = false; } + if (reset) + return; + + try { Cancellation.Dispose(); } + catch { /* ignore */ } + Cancellation = new CancellationTokenSource(); + } + + private void ResetMutableFields(bool preserveCancellation = false) + { + if (!preserveCancellation) + ReplaceCancellationIfNotResettable(); + RequestClosed = false; ResponseClosed = false; SyntheticTask = null; diff --git a/tests/Titanium.Web.Proxy.IntegrationTests/Http2BodyWriteHookFrameOrderTests.cs b/tests/Titanium.Web.Proxy.IntegrationTests/Http2BodyWriteHookFrameOrderTests.cs index c2e8704e2..b78288516 100644 --- a/tests/Titanium.Web.Proxy.IntegrationTests/Http2BodyWriteHookFrameOrderTests.cs +++ b/tests/Titanium.Web.Proxy.IntegrationTests/Http2BodyWriteHookFrameOrderTests.cs @@ -154,6 +154,106 @@ await rawClient.Connection.WriteFrameAsync(Http2FrameType.Data, 1, Http2FrameFla "Request DATA must not precede HEADERS toward the origin (idle-stream PROTOCOL_ERROR)."); } + [TestMethod] + [Timeout(30 * 1000)] + public async Task Http2_Mitm_BeforeResponse_GetResponseBody_With_BodyWriteHook_Completes() + { + // Inspector's BeforeResponse awaits GetResponseBody for inspectable bodies. The frame loop must keep + // routing the origin's DATA while that handler is parked (response DATA must not be gated on the + // raw handler task, which only completes after the body arrives). + var payload = new string('a', 4096); + using var rawServer = new Http2RawOriginServer(CreateOriginCertificate()); + rawServer.HandleConnection(async connection => + { + await connection.SendInitialSettingsAsync(); + var (streamId, _, _) = await connection.ReadRequestAsync(); + var responseHeaders = connection.EncodeHeaders( + new[] { (":status", "200") }, + new[] { ("content-type", "text/plain") }); + await connection.WriteHeaderBlockAsync(streamId, responseHeaders, endStream: false); + await connection.WriteFrameAsync(Http2FrameType.Data, streamId, 0, + Encoding.ASCII.GetBytes(payload[..2048])); + await connection.WriteFrameAsync(Http2FrameType.Data, streamId, Http2FrameFlag.EndStream, + Encoding.ASCII.GetBytes(payload[2048..])); + }); + + using var testSuite = new TestSuite(); + var proxy = SubscribeInspectorLikeHooks(testSuite.GetProxy()); + proxy.BeforeResponse += async (_, e) => { await e.GetResponseBody(); }; + + var uri = new Uri(rawServer.Url); + using var rawClient = await Http2RawClient.ConnectAsync(proxy.ProxyEndPoints[0].Port, uri.Host, uri.Port); + await SendGetAsync(rawClient, uri, 1); + + var (_, body) = await ReadStreamFramesUntilEndAsync(rawClient, 1); + Assert.AreEqual(payload, Encoding.ASCII.GetString(body)); + } + + [TestMethod] + [Timeout(30 * 1000)] + public async Task Http2_Mitm_OnResponseBodyWrite_Body_Larger_Than_Client_Window_Completes() + { + // The hook path must not park the frame loop on flow control AND must not lose the deferred tail: + // END_STREAM parked behind a short client window used to be closed (RemoveStream cancels the + // deferred queue and drops the flow window) so the client never saw the end of the body. + const int total = 300 * 1024; + var expected = new byte[total]; + new Random(7).NextBytes(expected); + + using var rawServer = new Http2RawOriginServer(CreateOriginCertificate()); + rawServer.HandleConnection(async connection => + { + await connection.SendInitialSettingsAsync(); + var (streamId, _, _) = await connection.ReadRequestAsync(); + var responseHeaders = connection.EncodeHeaders( + new[] { (":status", "200") }, + new[] { ("content-type", "application/octet-stream") }); + await connection.WriteHeaderBlockAsync(streamId, responseHeaders, endStream: false); + for (var offset = 0; offset < total; offset += 16384) + { + var len = Math.Min(16384, total - offset); + await connection.WriteFrameAsync(Http2FrameType.Data, streamId, + offset + len >= total ? Http2FrameFlag.EndStream : 0, + expected.AsMemory(offset, len).ToArray()); + } + }); + + using var testSuite = new TestSuite(); + var proxy = SubscribeInspectorLikeHooks(testSuite.GetProxy()); + + var uri = new Uri(rawServer.Url); + using var rawClient = await Http2RawClient.ConnectAsync(proxy.ProxyEndPoints[0].Port, uri.Host, uri.Port); + await SendGetAsync(rawClient, uri, 1); + + var received = new MemoryStream(); + var ended = false; + for (var i = 0; i < 2048 && !ended; i++) + { + var frame = await rawClient.Connection.ReadFrameAsync(); + if (frame.Type == Http2FrameType.RstStream && frame.StreamId == 1) + Assert.Fail("Stream was reset before the body completed."); + if (frame.Type != Http2FrameType.Data || frame.StreamId != 1) + continue; + + received.Write(frame.Payload, 0, frame.Payload.Length); + ended = (frame.Flags & Http2FrameFlag.EndStream) != 0; + if (!ended && frame.Payload.Length > 0) + { + // Replenish the (default 65535-byte) windows as a real client does. + var increment = new byte[] + { + (byte)(frame.Payload.Length >> 24), (byte)(frame.Payload.Length >> 16), + (byte)(frame.Payload.Length >> 8), (byte)frame.Payload.Length + }; + await rawClient.Connection.WriteFrameAsync(Http2FrameType.WindowUpdate, 0, 0, increment); + await rawClient.Connection.WriteFrameAsync(Http2FrameType.WindowUpdate, 1, 0, increment); + } + } + + Assert.IsTrue(ended, "Client never received END_STREAM for a body larger than its window."); + CollectionAssert.AreEqual(expected, received.ToArray()); + } + private static ProxyServer SubscribeInspectorLikeHooks(ProxyServer proxy) { proxy.EnableHttp2 = true; diff --git a/tests/Titanium.Web.Proxy.UnitTests/Http2StreamStatePoolTests.cs b/tests/Titanium.Web.Proxy.UnitTests/Http2StreamStatePoolTests.cs index d43b0b7fe..d2eb2dd3c 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/Http2StreamStatePoolTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/Http2StreamStatePoolTests.cs @@ -35,6 +35,23 @@ public void Return_DoesNotExceedMaxRetained_UnderConcurrentReturns() Assert.IsTrue(pool.Retained <= cap); } + [TestMethod] + public void Return_AfterCancellationDisposed_ReplacesTokenSourceInsteadOfThrowing() + { + // RST / protocol-error teardown disposes the (non-relay) CTS before finalize returns the shell. + var pool = new Http2StreamStatePool(4); + var state = new Http2StreamState(1); + state.Cancellation.Cancel(); + state.Cancellation.Dispose(); + + pool.Return(state); + + Assert.IsFalse(state.Cancellation.IsCancellationRequested); + var reused = pool.RentCompressed(3); + Assert.AreSame(state, reused); + Assert.IsFalse(reused.Cancellation.Token.IsCancellationRequested); + } + [TestMethod] public void RentCompressed_ReusesReturnedShell() { From 83da39311c82cf39760401a758dd5b2da745e5be Mon Sep 17 00:00:00 2001 From: github-actions <41898282+github-actions[bot]@users.noreply.github.com> Date: Thu, 1 Oct 2026 03:42:08 +0000 Subject: [PATCH 10/17] Update documentation --- ...um.Web.Proxy.Http.RequestResponseBase.html | 32 +++++++++---------- .../api/Titanium.Web.Proxy.Http.Response.html | 2 +- ...tanium.Web.Proxy.Options.PolicyFamily.html | 15 +++++++++ ...um.Web.Proxy.Options.ProxyPolicyModes.html | 23 +++++++------ ...eb.Proxy.Options.ProxyProfileSettings.html | 6 ++-- docs/api/Titanium.Web.Proxy.Options.html | 2 +- docs/index.json | 6 ++-- docs/xrefmap.yml | 18 +++++++---- 8 files changed, 65 insertions(+), 39 deletions(-) diff --git a/docs/api/Titanium.Web.Proxy.Http.RequestResponseBase.html b/docs/api/Titanium.Web.Proxy.Http.RequestResponseBase.html index 657ffc9e6..9358589af 100644 --- a/docs/api/Titanium.Web.Proxy.Http.RequestResponseBase.html +++ b/docs/api/Titanium.Web.Proxy.Http.RequestResponseBase.html @@ -125,7 +125,7 @@

Properties Edit this page - View Source + View Source

Body

@@ -157,7 +157,7 @@
Property Value
Edit this page - View Source + View Source

BodyInternal

@@ -188,7 +188,7 @@
Property Value
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BodyString

@@ -221,7 +221,7 @@
Property Value
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ContentEncoding

@@ -252,7 +252,7 @@
Property Value
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ContentLength

@@ -283,7 +283,7 @@
Property Value
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ContentType

@@ -314,7 +314,7 @@
Property Value
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Encoding

@@ -345,7 +345,7 @@
Property Value
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HasBody

@@ -376,7 +376,7 @@
Property Value
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HeaderText

@@ -407,7 +407,7 @@
Property Value
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Headers

@@ -438,7 +438,7 @@
Property Value
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HttpVersion

@@ -469,7 +469,7 @@
Property Value
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IsBodyRead

@@ -500,7 +500,7 @@
Property Value
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IsChunked

@@ -531,7 +531,7 @@
Property Value
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KeepBody

@@ -562,7 +562,7 @@
Property Value
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TrailingHeaders

@@ -612,7 +612,7 @@

Methods Edit this page - View Source + View Source

ToString()

diff --git a/docs/api/Titanium.Web.Proxy.Http.Response.html b/docs/api/Titanium.Web.Proxy.Http.Response.html index 1fb368e3d..f1af183cd 100644 --- a/docs/api/Titanium.Web.Proxy.Http.Response.html +++ b/docs/api/Titanium.Web.Proxy.Http.Response.html @@ -255,7 +255,7 @@
Overrides
Edit this page - View Source + View Source

HeaderText

diff --git a/docs/api/Titanium.Web.Proxy.Options.PolicyFamily.html b/docs/api/Titanium.Web.Proxy.Options.PolicyFamily.html index 755af538b..4c260ff61 100644 --- a/docs/api/Titanium.Web.Proxy.Options.PolicyFamily.html +++ b/docs/api/Titanium.Web.Proxy.Options.PolicyFamily.html @@ -151,6 +151,21 @@

Fields different, already-enforced protection - see ProxyServer.ClientHeaderTimeoutSeconds and DeadlineRegistry) is unaffected by this family's mode.

+ + + + Http1ReplaySafety +

Whether HTTP/1 keep-alive retries (EOF-before-response, malformed status, mid-exchange +IOException) and bare CR in header values follow the strict replay-safe rules.

+

+ Observe (default on Balanced and + LegacyCompatible) keeps today's lenient behavior and + records a policy breach metric when the strict rule would have fired. +

+

+ Enforce (default on PublicFacing) + refuses to replay non-idempotent methods and rejects bare CR/LF/NUL in header values. +

diff --git a/docs/api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html b/docs/api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html index 95120c407..009caa159 100644 --- a/docs/api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html +++ b/docs/api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html @@ -96,7 +96,7 @@

Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) never accepts it as a parameter, and the + proxy. No profile sets it: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) never accepts it as a parameter, and the only way to turn it on is the explicit WithAllowAmbiguousFramingEnabled() call, so enabling it can never be a side effect of selecting a profile.

@@ -205,7 +205,7 @@

Property Value
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this[PolicyFamily]

@@ -252,19 +252,19 @@

Methods

| - Edit this page + Edit this page - View Source + View Source -

Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode)

+

Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode)

Builds a snapshot with an explicit mode for every family. AllowAmbiguousFraming starts false.

Declaration
- 
public static ProxyPolicyModes Create(PolicyMode bodyBudget, PolicyMode decompressionRatio, PolicyMode headerLimits, PolicyMode admissionControl, PolicyMode http2AbuseBudget, PolicyMode http2RelayValidation = PolicyMode.Disabled)
+ 
public static ProxyPolicyModes Create(PolicyMode bodyBudget, PolicyMode decompressionRatio, PolicyMode headerLimits, PolicyMode admissionControl, PolicyMode http2AbuseBudget, PolicyMode http2RelayValidation = PolicyMode.Disabled, PolicyMode http1ReplaySafety = PolicyMode.Observe)
Parameters
@@ -306,6 +306,11 @@
Parameters
+ + + + +
http2RelayValidation
PolicyModehttp1ReplaySafety
Returns
@@ -328,7 +333,7 @@
Returns
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With(PolicyFamily, PolicyMode)

@@ -381,7 +386,7 @@
Returns
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WithAllObservedExceptDisabled()

@@ -415,7 +420,7 @@
Returns
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WithAllowAmbiguousFramingEnabled()

diff --git a/docs/api/Titanium.Web.Proxy.Options.ProxyProfileSettings.html b/docs/api/Titanium.Web.Proxy.Options.ProxyProfileSettings.html index 61532c401..5263ed4f6 100644 --- a/docs/api/Titanium.Web.Proxy.Options.ProxyProfileSettings.html +++ b/docs/api/Titanium.Web.Proxy.Options.ProxyProfileSettings.html @@ -294,7 +294,7 @@
Property Value
Edit this page - View Source + View Source

LegacyCompatible

@@ -398,7 +398,7 @@
Property Value
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PublicFacing

@@ -567,7 +567,7 @@

Methods Edit this page - View Source + View Source

For(ProxyProfile)

diff --git a/docs/api/Titanium.Web.Proxy.Options.html b/docs/api/Titanium.Web.Proxy.Options.html index f02c86eeb..a2d3b8975 100644 --- a/docs/api/Titanium.Web.Proxy.Options.html +++ b/docs/api/Titanium.Web.Proxy.Options.html @@ -101,7 +101,7 @@

Prox through" middle ground, so this is a single named, binary, off-by-default flag that relays malformed framing instead of rejecting it - useful only for security research that needs to observe how a client or origin reacts to smuggling-shaped input through the - proxy. No profile sets it: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) never accepts it as a parameter, and the + proxy. No profile sets it: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) never accepts it as a parameter, and the only way to turn it on is the explicit WithAllowAmbiguousFramingEnabled() call, so enabling it can never be a side effect of selecting a profile.

diff --git a/docs/index.json b/docs/index.json index fe6a3c3b6..6718f4924 100644 --- a/docs/index.json +++ b/docs/index.json @@ -502,7 +502,7 @@ "api/Titanium.Web.Proxy.Options.PolicyFamily.html": { "href": "api/Titanium.Web.Proxy.Options.PolicyFamily.html", "title": "Enum PolicyFamily | Titanium Web Proxy", - "summary": "Enum PolicyFamily The resource-bound policy families that support an PolicyMode other than Enforce, per the plan's rollout section. Framing, chunk parsing and Content-Length/Transfer-Encoding resolution are deliberately not members of this enum: they are always enforced and never consult a mode, because there is no safe Observe action for an ambiguous or malformed message - see ProxyPolicyModes and AllowAmbiguousFraming for the one explicit, isolated escape hatch from that rule. Namespace: Titanium.Web.Proxy.Options Assembly: Titanium.Web.Proxy.dll Syntax public enum PolicyFamily Fields Name Description AdmissionControl The global and per-endpoint admission gates that bound concurrently admitted client connections. BodyBudget Cumulative whole-body buffering limits (MaxBufferedBodyBytes and the MaxEncodedBodyBytes/MaxDecodedBodyBytes pair) enforced via Titanium.Web.Proxy.Network.Streams.BoundedWriteStream across H1, H2 and H3. DecompressionRatio The compressed-input/decompressed-output byte budgets and the expansion-ratio ceiling (MaxDecompressionRatio) applied while draining a Content-Encoding chain, so a small compressed body cannot expand unboundedly in memory before BodyBudget's own decoded-byte cap would catch it. Today, that decoded-byte cap is exactly what protects this case in practice: the decompression chain writes into the same Titanium.Web.Proxy.Network.Streams.BoundedWriteStream- wrapped target BodyBudget already bounds, so a small compressed body that expands enormously is caught the moment the decoded output crosses that limit, without needing a separately computed ratio. MaxDecompressionRatio and the encoded/decoded byte pair remain reserved for a future, more precise per-stream computation; this family's mode exists now so a profile can name it, but changing it has no additional effect while BodyBudget already covers the same paths. HeaderLimits Header line length, header count and aggregate header-byte limits (MaxHeaderLineBytes/MaxHeaderCount/ MaxHeaderAggregateBytes) intended for the request/response header-block read. Reserved, like DecompressionRatio, for numeric enforcement not yet wired to every header-reading call site; this family's mode exists so a profile can name it ahead of that work landing. The client request-line/header deadline (a different, already-enforced protection - see ProxyServer.ClientHeaderTimeoutSeconds and DeadlineRegistry) is unaffected by this family's mode. Http2AbuseBudget HTTP/2 abuse budgets: the open-header-block CONTINUATION frame-count/wall-clock bound and the peer-initiated incomplete-stream-reset budget. Http2RelayValidation Whether HPACK header blocks on the H2↔H2 compressed-relay path (httpInterceptionEnabled = false) are semantically validated per RFC 9113 §8.3. Unlike framing (always enforced, no Observe action), header semantics can be logged without corrupting connection state. Disabled (default on Balanced) skips HPACK decode entirely — maximum throughput when upstream peers are trusted. Observe decodes and records semantic violations without rejecting the stream. Does not mutate headers, so the compressed-relay MutationCount fast path is unaffected when the family is Disabled. Enforce (default on PublicFacing and AllEnforce) decodes and sends GOAWAY(PROTOCOL_ERROR) on violations." + "summary": "Enum PolicyFamily The resource-bound policy families that support an PolicyMode other than Enforce, per the plan's rollout section. Framing, chunk parsing and Content-Length/Transfer-Encoding resolution are deliberately not members of this enum: they are always enforced and never consult a mode, because there is no safe Observe action for an ambiguous or malformed message - see ProxyPolicyModes and AllowAmbiguousFraming for the one explicit, isolated escape hatch from that rule. Namespace: Titanium.Web.Proxy.Options Assembly: Titanium.Web.Proxy.dll Syntax public enum PolicyFamily Fields Name Description AdmissionControl The global and per-endpoint admission gates that bound concurrently admitted client connections. BodyBudget Cumulative whole-body buffering limits (MaxBufferedBodyBytes and the MaxEncodedBodyBytes/MaxDecodedBodyBytes pair) enforced via Titanium.Web.Proxy.Network.Streams.BoundedWriteStream across H1, H2 and H3. DecompressionRatio The compressed-input/decompressed-output byte budgets and the expansion-ratio ceiling (MaxDecompressionRatio) applied while draining a Content-Encoding chain, so a small compressed body cannot expand unboundedly in memory before BodyBudget's own decoded-byte cap would catch it. Today, that decoded-byte cap is exactly what protects this case in practice: the decompression chain writes into the same Titanium.Web.Proxy.Network.Streams.BoundedWriteStream- wrapped target BodyBudget already bounds, so a small compressed body that expands enormously is caught the moment the decoded output crosses that limit, without needing a separately computed ratio. MaxDecompressionRatio and the encoded/decoded byte pair remain reserved for a future, more precise per-stream computation; this family's mode exists now so a profile can name it, but changing it has no additional effect while BodyBudget already covers the same paths. HeaderLimits Header line length, header count and aggregate header-byte limits (MaxHeaderLineBytes/MaxHeaderCount/ MaxHeaderAggregateBytes) intended for the request/response header-block read. Reserved, like DecompressionRatio, for numeric enforcement not yet wired to every header-reading call site; this family's mode exists so a profile can name it ahead of that work landing. The client request-line/header deadline (a different, already-enforced protection - see ProxyServer.ClientHeaderTimeoutSeconds and DeadlineRegistry) is unaffected by this family's mode. Http1ReplaySafety Whether HTTP/1 keep-alive retries (EOF-before-response, malformed status, mid-exchange IOException) and bare CR in header values follow the strict replay-safe rules. Observe (default on Balanced and LegacyCompatible) keeps today's lenient behavior and records a policy breach metric when the strict rule would have fired. Enforce (default on PublicFacing) refuses to replay non-idempotent methods and rejects bare CR/LF/NUL in header values. Http2AbuseBudget HTTP/2 abuse budgets: the open-header-block CONTINUATION frame-count/wall-clock bound and the peer-initiated incomplete-stream-reset budget. Http2RelayValidation Whether HPACK header blocks on the H2↔H2 compressed-relay path (httpInterceptionEnabled = false) are semantically validated per RFC 9113 §8.3. Unlike framing (always enforced, no Observe action), header semantics can be logged without corrupting connection state. Disabled (default on Balanced) skips HPACK decode entirely — maximum throughput when upstream peers are trusted. Observe decodes and records semantic violations without rejecting the stream. Does not mutate headers, so the compressed-relay MutationCount fast path is unaffected when the family is Disabled. Enforce (default on PublicFacing and AllEnforce) decodes and sends GOAWAY(PROTOCOL_ERROR) on violations." }, "api/Titanium.Web.Proxy.Options.PolicyMode.html": { "href": "api/Titanium.Web.Proxy.Options.PolicyMode.html", @@ -512,7 +512,7 @@ "api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html": { "href": "api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html", "title": "Class ProxyPolicyModes | Titanium Web Proxy", - "summary": "Class ProxyPolicyModes Immutable snapshot of the PolicyMode selected for each PolicyFamily, plus the one deliberately-separate AllowAmbiguousFraming escape hatch. Read live by enforcement call sites through PolicyModes, which the plan's rollout section requires to be a runtime switch: replacing the whole snapshot (see PolicyModes's setter) rather than mutating a field lets an operator drop every family to Observe without redeploying, while every in-flight request that already read the previous snapshot keeps behaving consistently with whichever snapshot it observed. AllowAmbiguousFraming is not a PolicyFamily member and has no corresponding PolicyMode: framing, chunk parsing and Content-Length/Transfer-Encoding resolution have no safe \"detect but let it through\" middle ground, so this is a single named, binary, off-by-default flag that relays malformed framing instead of rejecting it - useful only for security research that needs to observe how a client or origin reacts to smuggling-shaped input through the proxy. No profile sets it: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) never accepts it as a parameter, and the only way to turn it on is the explicit WithAllowAmbiguousFramingEnabled() call, so enabling it can never be a side effect of selecting a profile. Inheritance object ProxyPolicyModes Inherited Members object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.ReferenceEquals(object, object) object.ToString() Namespace: Titanium.Web.Proxy.Options Assembly: Titanium.Web.Proxy.dll Syntax public sealed class ProxyPolicyModes Properties | Edit this page View Source AllEnforce Every family enforced - today's shipped behavior, and the starting point every profile builds from. Declaration public static ProxyPolicyModes AllEnforce { get; } Property Value Type Description ProxyPolicyModes | Edit this page View Source AllowAmbiguousFraming Off by default and absent from every profile - see the type-level remarks. Never true unless WithAllowAmbiguousFramingEnabled() was called explicitly. Declaration public bool AllowAmbiguousFraming { get; } Property Value Type Description bool | Edit this page View Source this[PolicyFamily] Returns the mode selected for family. Declaration public PolicyMode this[PolicyFamily family] { get; } Parameters Type Name Description PolicyFamily family Property Value Type Description PolicyMode Methods | Edit this page View Source Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) Builds a snapshot with an explicit mode for every family. AllowAmbiguousFraming starts false. Declaration public static ProxyPolicyModes Create(PolicyMode bodyBudget, PolicyMode decompressionRatio, PolicyMode headerLimits, PolicyMode admissionControl, PolicyMode http2AbuseBudget, PolicyMode http2RelayValidation = PolicyMode.Disabled) Parameters Type Name Description PolicyMode bodyBudget PolicyMode decompressionRatio PolicyMode headerLimits PolicyMode admissionControl PolicyMode http2AbuseBudget PolicyMode http2RelayValidation Returns Type Description ProxyPolicyModes | Edit this page View Source With(PolicyFamily, PolicyMode) Returns a snapshot identical to this one but with mode for family. Declaration public ProxyPolicyModes With(PolicyFamily family, PolicyMode mode) Parameters Type Name Description PolicyFamily family PolicyMode mode Returns Type Description ProxyPolicyModes | Edit this page View Source WithAllObservedExceptDisabled() Returns a snapshot identical to this one but with every family dropped to Observe, except families already Disabled (which stay disabled - Observe would silently turn a family back on). This is the \"drop to Observe without redeploying\" runtime switch the plan's rollout section requires. Declaration public ProxyPolicyModes WithAllObservedExceptDisabled() Returns Type Description ProxyPolicyModes | Edit this page View Source WithAllowAmbiguousFramingEnabled() The single, explicit, isolated act of relaying ambiguous HTTP/1 framing instead of rejecting it. See the type-level remarks; never call this as a side effect of applying a profile. Declaration public ProxyPolicyModes WithAllowAmbiguousFramingEnabled() Returns Type Description ProxyPolicyModes" + "summary": "Class ProxyPolicyModes Immutable snapshot of the PolicyMode selected for each PolicyFamily, plus the one deliberately-separate AllowAmbiguousFraming escape hatch. Read live by enforcement call sites through PolicyModes, which the plan's rollout section requires to be a runtime switch: replacing the whole snapshot (see PolicyModes's setter) rather than mutating a field lets an operator drop every family to Observe without redeploying, while every in-flight request that already read the previous snapshot keeps behaving consistently with whichever snapshot it observed. AllowAmbiguousFraming is not a PolicyFamily member and has no corresponding PolicyMode: framing, chunk parsing and Content-Length/Transfer-Encoding resolution have no safe \"detect but let it through\" middle ground, so this is a single named, binary, off-by-default flag that relays malformed framing instead of rejecting it - useful only for security research that needs to observe how a client or origin reacts to smuggling-shaped input through the proxy. No profile sets it: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) never accepts it as a parameter, and the only way to turn it on is the explicit WithAllowAmbiguousFramingEnabled() call, so enabling it can never be a side effect of selecting a profile. Inheritance object ProxyPolicyModes Inherited Members object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.ReferenceEquals(object, object) object.ToString() Namespace: Titanium.Web.Proxy.Options Assembly: Titanium.Web.Proxy.dll Syntax public sealed class ProxyPolicyModes Properties | Edit this page View Source AllEnforce Every family enforced - today's shipped behavior, and the starting point every profile builds from. Declaration public static ProxyPolicyModes AllEnforce { get; } Property Value Type Description ProxyPolicyModes | Edit this page View Source AllowAmbiguousFraming Off by default and absent from every profile - see the type-level remarks. Never true unless WithAllowAmbiguousFramingEnabled() was called explicitly. Declaration public bool AllowAmbiguousFraming { get; } Property Value Type Description bool | Edit this page View Source this[PolicyFamily] Returns the mode selected for family. Declaration public PolicyMode this[PolicyFamily family] { get; } Parameters Type Name Description PolicyFamily family Property Value Type Description PolicyMode Methods | Edit this page View Source Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) Builds a snapshot with an explicit mode for every family. AllowAmbiguousFraming starts false. Declaration public static ProxyPolicyModes Create(PolicyMode bodyBudget, PolicyMode decompressionRatio, PolicyMode headerLimits, PolicyMode admissionControl, PolicyMode http2AbuseBudget, PolicyMode http2RelayValidation = PolicyMode.Disabled, PolicyMode http1ReplaySafety = PolicyMode.Observe) Parameters Type Name Description PolicyMode bodyBudget PolicyMode decompressionRatio PolicyMode headerLimits PolicyMode admissionControl PolicyMode http2AbuseBudget PolicyMode http2RelayValidation PolicyMode http1ReplaySafety Returns Type Description ProxyPolicyModes | Edit this page View Source With(PolicyFamily, PolicyMode) Returns a snapshot identical to this one but with mode for family. Declaration public ProxyPolicyModes With(PolicyFamily family, PolicyMode mode) Parameters Type Name Description PolicyFamily family PolicyMode mode Returns Type Description ProxyPolicyModes | Edit this page View Source WithAllObservedExceptDisabled() Returns a snapshot identical to this one but with every family dropped to Observe, except families already Disabled (which stay disabled - Observe would silently turn a family back on). This is the \"drop to Observe without redeploying\" runtime switch the plan's rollout section requires. Declaration public ProxyPolicyModes WithAllObservedExceptDisabled() Returns Type Description ProxyPolicyModes | Edit this page View Source WithAllowAmbiguousFramingEnabled() The single, explicit, isolated act of relaying ambiguous HTTP/1 framing instead of rejecting it. See the type-level remarks; never call this as a side effect of applying a profile. Declaration public ProxyPolicyModes WithAllowAmbiguousFramingEnabled() Returns Type Description ProxyPolicyModes" }, "api/Titanium.Web.Proxy.Options.ProxyProfile.html": { "href": "api/Titanium.Web.Proxy.Options.ProxyProfile.html", @@ -542,7 +542,7 @@ "api/Titanium.Web.Proxy.Options.html": { "href": "api/Titanium.Web.Proxy.Options.html", "title": "Namespace Titanium.Web.Proxy.Options | Titanium Web Proxy", - "summary": "Namespace Titanium.Web.Proxy.Options Classes ProxyPolicyModes Immutable snapshot of the PolicyMode selected for each PolicyFamily, plus the one deliberately-separate AllowAmbiguousFraming escape hatch. Read live by enforcement call sites through PolicyModes, which the plan's rollout section requires to be a runtime switch: replacing the whole snapshot (see PolicyModes's setter) rather than mutating a field lets an operator drop every family to Observe without redeploying, while every in-flight request that already read the previous snapshot keeps behaving consistently with whichever snapshot it observed. AllowAmbiguousFraming is not a PolicyFamily member and has no corresponding PolicyMode: framing, chunk parsing and Content-Length/Transfer-Encoding resolution have no safe \"detect but let it through\" middle ground, so this is a single named, binary, off-by-default flag that relays malformed framing instead of rejecting it - useful only for security research that needs to observe how a client or origin reacts to smuggling-shaped input through the proxy. No profile sets it: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) never accepts it as a parameter, and the only way to turn it on is the explicit WithAllowAmbiguousFramingEnabled() call, so enabling it can never be a side effect of selecting a profile. ProxyProfileSettings The full bundle of settings one ProxyProfile applies to a ProxyServer as a single atomic assignment via Profile. Deliberately a plain data bundle, not a type with behavior: applying it is ProxyServer's job (see Profile's setter), so this type has no back-reference and no side effects of its own, per the plan's \"Constraints on the policy layer\" section. ProxyResourceLimits Immutable, validated snapshot of the resource bounds a peer can make the proxy allocate: header shape, body/decompression budgets, concurrency and abuse-rate ceilings, and pool / certificate-cache sizing. Constructed only through Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?), which validates every field up front, so an invalid limit is a construction-time exception rather than a runtime surprise discovered mid-connection. A limit that can legitimately be turned off is typed as nullable with null meaning \"disabled\" - an explicit state - rather than overloading 0 or a negative number to mean the same thing. Limits that must always be enforced because disabling them would leave the proxy itself exploitable (the concurrent-stream cap, the open-header-block frame bound) are non-nullable and always validated to be strictly positive. This type has no back-reference to ProxyServer and no mutable state after construction: it is meant to be handed down to subsystems by value, not looked up through a service locator or an ambient static, so the dependency graph among consumers stays acyclic per the plan's \"Constraints on the policy layer\" section. ProxyTimeoutOptions Immutable, validated snapshot of every deadline the proxy enforces across a request's lifetime, expressed consistently as TimeSpan rather than the mixture of \"seconds as int\" properties this replaces (ConnectionTimeOutSeconds, ConnectTimeOutSeconds, ...). A deadline that can be legitimately unbounded is nullable, with null meaning \"no deadline\" as an explicit state rather than Zero or a magic sentinel duration. This type only holds values; it does not decide which deadline fired first when several are composed for one request. That is the responsibility of the per-request deadline registry described in the plan's \"Deadline composition\" section, introduced alongside the header-parsing deadlines in a later item so it can be exercised by a real caller instead of landing as unused scaffolding. ResolvedSessionPolicy Read-only snapshot combining ProxyResourceLimits and ProxyTimeoutOptions into the single object H1/H2/H3/WebSocket subsystems are handed, so runtime mutation of either half cannot produce inconsistent enforcement partway through a request that started under a different combination of the two. Per the plan's \"Constraints on the policy layer\" section, this type is deliberately inert: no back-pointer to ProxyServer, no service-locator lookup, no mutable fields, no static ambient accessor. Subsystems receive it as a constructor argument or method parameter only, so the dependency graph among consumers stays acyclic - the opposite of how ProxyServer itself is reached today. Per the plan's \"Two-phase policy resolution\" section, a single resolution per connection is not correct: SessionEventArgs.MaxBufferedBodyBytes is contractually settable from BeforeRequest, and HTTP/3 already reads the request body before BeforeRequest fires. This type does not itself perform either resolution phase - that is the responsibility of the call sites introduced in later hardening-plan items, once there is a real per-session override path to resolve against - but it is deliberately shaped so a caller can hold one instance at headers-complete time (ResourceLimits's framing/header-shape fields, which are never overridable) and, if a session lowers a body or streaming budget in BeforeRequest, build a second instance via Create(ProxyResourceLimits, ProxyTimeoutOptions) that shares the same Timeouts but substitutes a ProxyResourceLimits reflecting the override, rather than mutating the first instance in place. Enums PolicyFamily The resource-bound policy families that support an PolicyMode other than Enforce, per the plan's rollout section. Framing, chunk parsing and Content-Length/Transfer-Encoding resolution are deliberately not members of this enum: they are always enforced and never consult a mode, because there is no safe Observe action for an ambiguous or malformed message - see ProxyPolicyModes and AllowAmbiguousFraming for the one explicit, isolated escape hatch from that rule. PolicyMode How a resource-bound policy family is applied once its numeric limit is breached, per the plan's \"Rollout, profiles and documentation\" section. Not every family supports every mode. Framing, chunk parsing and Content-Length/Transfer-Encoding resolution have no Observe mode at all: an ambiguous chunk size or a conflicting length can only be forwarded (a desync) or rejected, so those call sites are unconditionally enforced and never consult a PolicyMode. ProxyPolicyModes exists for the families where a safe \"detect but let it through\" middle ground is actually possible. ProxyProfile The three shipped profiles, per the plan's \"Rollout, profiles and documentation\" section. Selecting a profile via Profile applies its ProxyProfileSettings atomically to resource limits, policy modes, TLS protocols, private-network blocking, admission caps, and deadline-second properties, so a caller can never observe a half-applied profile." + "summary": "Namespace Titanium.Web.Proxy.Options Classes ProxyPolicyModes Immutable snapshot of the PolicyMode selected for each PolicyFamily, plus the one deliberately-separate AllowAmbiguousFraming escape hatch. Read live by enforcement call sites through PolicyModes, which the plan's rollout section requires to be a runtime switch: replacing the whole snapshot (see PolicyModes's setter) rather than mutating a field lets an operator drop every family to Observe without redeploying, while every in-flight request that already read the previous snapshot keeps behaving consistently with whichever snapshot it observed. AllowAmbiguousFraming is not a PolicyFamily member and has no corresponding PolicyMode: framing, chunk parsing and Content-Length/Transfer-Encoding resolution have no safe \"detect but let it through\" middle ground, so this is a single named, binary, off-by-default flag that relays malformed framing instead of rejecting it - useful only for security research that needs to observe how a client or origin reacts to smuggling-shaped input through the proxy. No profile sets it: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) never accepts it as a parameter, and the only way to turn it on is the explicit WithAllowAmbiguousFramingEnabled() call, so enabling it can never be a side effect of selecting a profile. ProxyProfileSettings The full bundle of settings one ProxyProfile applies to a ProxyServer as a single atomic assignment via Profile. Deliberately a plain data bundle, not a type with behavior: applying it is ProxyServer's job (see Profile's setter), so this type has no back-reference and no side effects of its own, per the plan's \"Constraints on the policy layer\" section. ProxyResourceLimits Immutable, validated snapshot of the resource bounds a peer can make the proxy allocate: header shape, body/decompression budgets, concurrency and abuse-rate ceilings, and pool / certificate-cache sizing. Constructed only through Create(long, int, long, long?, long?, double?, int?, int, int?, int, TimeSpan, bool, int, int?), which validates every field up front, so an invalid limit is a construction-time exception rather than a runtime surprise discovered mid-connection. A limit that can legitimately be turned off is typed as nullable with null meaning \"disabled\" - an explicit state - rather than overloading 0 or a negative number to mean the same thing. Limits that must always be enforced because disabling them would leave the proxy itself exploitable (the concurrent-stream cap, the open-header-block frame bound) are non-nullable and always validated to be strictly positive. This type has no back-reference to ProxyServer and no mutable state after construction: it is meant to be handed down to subsystems by value, not looked up through a service locator or an ambient static, so the dependency graph among consumers stays acyclic per the plan's \"Constraints on the policy layer\" section. ProxyTimeoutOptions Immutable, validated snapshot of every deadline the proxy enforces across a request's lifetime, expressed consistently as TimeSpan rather than the mixture of \"seconds as int\" properties this replaces (ConnectionTimeOutSeconds, ConnectTimeOutSeconds, ...). A deadline that can be legitimately unbounded is nullable, with null meaning \"no deadline\" as an explicit state rather than Zero or a magic sentinel duration. This type only holds values; it does not decide which deadline fired first when several are composed for one request. That is the responsibility of the per-request deadline registry described in the plan's \"Deadline composition\" section, introduced alongside the header-parsing deadlines in a later item so it can be exercised by a real caller instead of landing as unused scaffolding. ResolvedSessionPolicy Read-only snapshot combining ProxyResourceLimits and ProxyTimeoutOptions into the single object H1/H2/H3/WebSocket subsystems are handed, so runtime mutation of either half cannot produce inconsistent enforcement partway through a request that started under a different combination of the two. Per the plan's \"Constraints on the policy layer\" section, this type is deliberately inert: no back-pointer to ProxyServer, no service-locator lookup, no mutable fields, no static ambient accessor. Subsystems receive it as a constructor argument or method parameter only, so the dependency graph among consumers stays acyclic - the opposite of how ProxyServer itself is reached today. Per the plan's \"Two-phase policy resolution\" section, a single resolution per connection is not correct: SessionEventArgs.MaxBufferedBodyBytes is contractually settable from BeforeRequest, and HTTP/3 already reads the request body before BeforeRequest fires. This type does not itself perform either resolution phase - that is the responsibility of the call sites introduced in later hardening-plan items, once there is a real per-session override path to resolve against - but it is deliberately shaped so a caller can hold one instance at headers-complete time (ResourceLimits's framing/header-shape fields, which are never overridable) and, if a session lowers a body or streaming budget in BeforeRequest, build a second instance via Create(ProxyResourceLimits, ProxyTimeoutOptions) that shares the same Timeouts but substitutes a ProxyResourceLimits reflecting the override, rather than mutating the first instance in place. Enums PolicyFamily The resource-bound policy families that support an PolicyMode other than Enforce, per the plan's rollout section. Framing, chunk parsing and Content-Length/Transfer-Encoding resolution are deliberately not members of this enum: they are always enforced and never consult a mode, because there is no safe Observe action for an ambiguous or malformed message - see ProxyPolicyModes and AllowAmbiguousFraming for the one explicit, isolated escape hatch from that rule. PolicyMode How a resource-bound policy family is applied once its numeric limit is breached, per the plan's \"Rollout, profiles and documentation\" section. Not every family supports every mode. Framing, chunk parsing and Content-Length/Transfer-Encoding resolution have no Observe mode at all: an ambiguous chunk size or a conflicting length can only be forwarded (a desync) or rejected, so those call sites are unconditionally enforced and never consult a PolicyMode. ProxyPolicyModes exists for the families where a safe \"detect but let it through\" middle ground is actually possible. ProxyProfile The three shipped profiles, per the plan's \"Rollout, profiles and documentation\" section. Selecting a profile via Profile applies its ProxyProfileSettings atomically to resource limits, policy modes, TLS protocols, private-network blocking, admission caps, and deadline-second properties, so a caller can never observe a half-applied profile." }, "api/Titanium.Web.Proxy.ProxyLimits.html": { "href": "api/Titanium.Web.Proxy.ProxyLimits.html", diff --git a/docs/xrefmap.yml b/docs/xrefmap.yml index 0e0beb060..6d77c5e65 100644 --- a/docs/xrefmap.yml +++ b/docs/xrefmap.yml @@ -7994,6 +7994,12 @@ references: commentId: F:Titanium.Web.Proxy.Options.PolicyFamily.HeaderLimits fullName: Titanium.Web.Proxy.Options.PolicyFamily.HeaderLimits nameWithType: PolicyFamily.HeaderLimits +- uid: Titanium.Web.Proxy.Options.PolicyFamily.Http1ReplaySafety + name: Http1ReplaySafety + href: api/Titanium.Web.Proxy.Options.PolicyFamily.html#Titanium_Web_Proxy_Options_PolicyFamily_Http1ReplaySafety + commentId: F:Titanium.Web.Proxy.Options.PolicyFamily.Http1ReplaySafety + fullName: Titanium.Web.Proxy.Options.PolicyFamily.Http1ReplaySafety + nameWithType: PolicyFamily.Http1ReplaySafety - uid: Titanium.Web.Proxy.Options.PolicyFamily.Http2AbuseBudget name: Http2AbuseBudget href: api/Titanium.Web.Proxy.Options.PolicyFamily.html#Titanium_Web_Proxy_Options_PolicyFamily_Http2AbuseBudget @@ -8062,12 +8068,12 @@ references: isSpec: "True" fullName: Titanium.Web.Proxy.Options.ProxyPolicyModes.AllowAmbiguousFraming nameWithType: ProxyPolicyModes.AllowAmbiguousFraming -- uid: Titanium.Web.Proxy.Options.ProxyPolicyModes.Create(Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode) - name: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) - href: api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html#Titanium_Web_Proxy_Options_ProxyPolicyModes_Create_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_ - commentId: M:Titanium.Web.Proxy.Options.ProxyPolicyModes.Create(Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode) - fullName: Titanium.Web.Proxy.Options.ProxyPolicyModes.Create(Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode) - nameWithType: ProxyPolicyModes.Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) +- uid: Titanium.Web.Proxy.Options.ProxyPolicyModes.Create(Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode) + name: Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) + href: api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html#Titanium_Web_Proxy_Options_ProxyPolicyModes_Create_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_Titanium_Web_Proxy_Options_PolicyMode_ + commentId: M:Titanium.Web.Proxy.Options.ProxyPolicyModes.Create(Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode,Titanium.Web.Proxy.Options.PolicyMode) + fullName: Titanium.Web.Proxy.Options.ProxyPolicyModes.Create(Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode, Titanium.Web.Proxy.Options.PolicyMode) + nameWithType: ProxyPolicyModes.Create(PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode, PolicyMode) - uid: Titanium.Web.Proxy.Options.ProxyPolicyModes.Create* name: Create href: api/Titanium.Web.Proxy.Options.ProxyPolicyModes.html#Titanium_Web_Proxy_Options_ProxyPolicyModes_Create_ From b0fd4e62f8bdf1345265e8e8e56ce74ef2821fdd Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 11:29:28 +0530 Subject: [PATCH 11/17] fix(http2): hook/relay lost-wakeup redrain, H2->H1 bridge empty body; add x.com-style regression matrices - Redrain deferred outbound DATA after parking when WINDOW_UPDATE raced on the other frame loop (intermittent ~500 KB stall with body-write hooks). - H2->H1 bridge: explicit ReadOnlyMemory? cast so GetResponseBody in OnBeforeResponse no longer yields an empty body. - Tests: Inspector-like hook matrices for H2->H3 (cold/warm, QuicStream disposed regression) and H2 direct/forced-H1 arms. --- .../Handlers/Http2ToHttp11BridgeHandler.cs | 2 +- .../Http2/Http2Helper.Copy.cs | 69 +++ .../Http2InspectorHookArmsRegressionTests.cs | 295 ++++++++++++ .../Http2ToHttp3InspectorRegressionTests.cs | 441 ++++++++++++++++++ 4 files changed, 806 insertions(+), 1 deletion(-) create mode 100644 tests/Titanium.Web.Proxy.IntegrationTests/Http2InspectorHookArmsRegressionTests.cs create mode 100644 tests/Titanium.Web.Proxy.IntegrationTests/Http2ToHttp3InspectorRegressionTests.cs diff --git a/src/Titanium.Web.Proxy/Handlers/Http2ToHttp11BridgeHandler.cs b/src/Titanium.Web.Proxy/Handlers/Http2ToHttp11BridgeHandler.cs index f64fc4e98..32e88f448 100644 --- a/src/Titanium.Web.Proxy/Handlers/Http2ToHttp11BridgeHandler.cs +++ b/src/Titanium.Web.Proxy/Handlers/Http2ToHttp11BridgeHandler.cs @@ -737,7 +737,7 @@ await framed.CopyFromAsync(async (dest, token) => } await Http2Helper.EmitSyntheticResponseAsync(sessionArgs, streamId, connectionState, clientStream, - cancellationToken, wireBody: eagerWireBody is { } bytes ? bytes.AsMemory() : null); + cancellationToken, wireBody: eagerWireBody is { } bytes ? (ReadOnlyMemory?)bytes.AsMemory() : null); if (restoreResponseVersionAfterEmit) sessionArgs.HttpClient.Response.HttpVersion = HttpHeader.Version11; diff --git a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs index a6fb98ef7..efa743269 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2Helper.Copy.cs @@ -718,6 +718,36 @@ void MarkCompressedClosedIfFullySent() } } + // Lost-wakeup guard: the peer's WINDOW_UPDATE is handled by the *other* frame loop and + // may drain this queue between TryReservePartial/PendingCount and TryEnqueue, parking + // the bytes with no further WINDOW_UPDATE ever coming. Re-drain once they are queued. + void RedrainIfParked() + { + if (originReceiveLeg != null || dedicatedWriter == null || wireStreamId != dataStreamId + || sendDeferred.PendingCount(wireStreamId) == 0) + return; + + sendDeferred.TryDrain(sendFlow, dedicatedWriter, + sentId => + { + if (connectionState.Streams.TryGetValue(sentId, out var st) && st.IsClosed) + { + connectionState.OriginRelayPool?.ReleaseStream(sentId); + connectionState.RemoveStream(sentId); + ScheduleFinalize(st, onAfterResponse, logger, connectionState); + } + }, + queuedId => + { + if (!connectionState.Streams.TryGetValue(queuedId, out var st)) + return; + if (isClient) + st.RequestClosed = true; + else + st.ResponseClosed = true; + }); + } + void EnqueueWireFrame(ReadOnlySpan payload, bool endStream) { var wireLen = 9 + payload.Length; @@ -782,6 +812,7 @@ await lockedOwnLegWrite(() => SendRstStreamAsync(new Http2FrameHeader(), if (length > 0 && payloadRented.Length > 0) ArrayPool.Shared.Return(payloadRented); + RedrainIfParked(); continue; } @@ -839,6 +870,7 @@ await lockedOwnLegWrite(() => SendRstStreamAsync(new Http2FrameHeader(), connectionState.RemoveStream(dataStreamId); } + RedrainIfParked(); continue; } @@ -1658,6 +1690,43 @@ await lockedOwnLegWrite(() => SendRstStreamAsync(new Http2FrameHeader(), new byte[9], streamId, Http2ErrorCode.EnhanceYourCalm, input)); RemoveAndFinalizeStream(streamId); } + + if (queued != QueueSendDataResult.CapExceeded + && originReceiveLeg == null && bodyDeferred.PendingCount(streamId) > 0) + { + // Lost-wakeup guard: the peer's WINDOW_UPDATE is processed by the *other* + // frame loop and may have drained the queue between TryReservePartial + // (short) and TryEnqueue above, leaving these bytes parked with no further + // WINDOW_UPDATE ever coming. Re-drain now that they are queued. + var hookWriter = isClient + ? connectionState.ServerFrameWriter + : connectionState.ClientFrameWriter; + var hookTowardServer = isClient; + if (hookWriter != null) + { + bodyDeferred.TryDrain(outboundFlow, hookWriter, + sentId => + { + if (!connectionState.Streams.TryGetValue(sentId, out var st)) + return; + if (st.IsClosed) + { + connectionState.OriginRelayPool?.ReleaseStream(sentId); + connectionState.RemoveStream(sentId); + ScheduleFinalize(st, onAfterResponse, logger, connectionState); + } + }, + queuedId => + { + if (!connectionState.Streams.TryGetValue(queuedId, out var st)) + return; + if (hookTowardServer) + st.RequestClosed = true; + else + st.ResponseClosed = true; + }); + } + } } // we have emitted our own (possibly re-sized) DATA frame(s); suppress the default relay diff --git a/tests/Titanium.Web.Proxy.IntegrationTests/Http2InspectorHookArmsRegressionTests.cs b/tests/Titanium.Web.Proxy.IntegrationTests/Http2InspectorHookArmsRegressionTests.cs new file mode 100644 index 000000000..09a67de65 --- /dev/null +++ b/tests/Titanium.Web.Proxy.IntegrationTests/Http2InspectorHookArmsRegressionTests.cs @@ -0,0 +1,295 @@ +using System; +using System.Linq; +using System.Net; +using System.Net.Http; +using System.Text; +using System.Threading.Tasks; +using Microsoft.AspNetCore.Http; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Titanium.Web.Proxy.IntegrationTests.Helpers; +using Titanium.Web.Proxy.IntegrationTests.Setup; +using Titanium.Web.Proxy.Models; + +namespace Titanium.Web.Proxy.IntegrationTests; + +/// +/// Inspector-hook regression matrix for the non-H3 arms: HTTP/2 client with the Inspector's hook set +/// (GetResponseBody in BeforeResponse, body-write hooks) against an HTTPS origin via the +/// direct arm (origin negotiates h2 or h1 per ALPN) and the forced-HTTP/1.1 bridge arm. +/// Guards the "every request hangs" deadlock (response DATA gated on a handler that awaits that DATA), +/// deferred END_STREAM behind a short client window, and stream/lease cleanup on replaced/synthetic +/// responses. +/// +[TestClass] +public class Http2InspectorHookArmsRegressionTests +{ + public enum Arm + { + Direct, + ForcedHttp11Bridge + } + + private static (TestSuite Suite, TestServer Server, ProxyServer Proxy, HttpClient Client) Start( + Arm arm, bool readResponseBody = true, Action? configure = null) + { + var suite = new TestSuite(); + var server = suite.GetServer(); + var proxy = suite.GetProxy(); + proxy.EnableHttp2 = true; + proxy.BeforeRequest += (_, _) => Task.CompletedTask; + proxy.BeforeResponse += async (_, e) => + { + if (readResponseBody && e.HttpClient.Response.HasBody) + await e.GetResponseBody(); + }; + proxy.OnRequestBodyWrite += (_, _) => Task.CompletedTask; + proxy.OnResponseBodyWrite += (_, _) => Task.CompletedTask; + + if (arm == Arm.ForcedHttp11Bridge) + { + var endpoint = (ExplicitProxyEndPoint)proxy.ProxyEndPoints[0]; + endpoint.BeforeTunnelConnectRequest += (_, e) => + { + e.UpstreamHttpProtocol = UpstreamHttpProtocol.Http11; + e.AllowHttpProtocolTranslation = true; + return Task.CompletedTask; + }; + } + + configure?.Invoke(proxy); + var client = TestHelper.GetHttp2Client(proxy); + client.Timeout = TimeSpan.FromSeconds(20); + return (suite, server, proxy, client); + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(Arm.Direct)] + [DataRow(Arm.ForcedHttp11Bridge)] + public async Task Get_Json_WithResponseBodyRead_DeliversBody(Arm arm) + { + var (suite, server, _, client) = Start(arm); + using (suite) + using (client) + { + const string json = "{\"data\":{\"ok\":true}}"; + server.HandleRequest(async ctx => + { + ctx.Response.ContentType = "application/json"; + await ctx.Response.WriteAsync(json); + }); + + var response = await client.GetAsync($"https://localhost:{server.HttpsListeningPort}/graphql"); + Assert.AreEqual(HttpStatusCode.OK, response.StatusCode); + Assert.AreEqual(json, await response.Content.ReadAsStringAsync()); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(Arm.Direct, true)] + [DataRow(Arm.Direct, false)] + [DataRow(Arm.ForcedHttp11Bridge, true)] + [DataRow(Arm.ForcedHttp11Bridge, false)] + public async Task Get_LargeBody_ExceedsClientWindow_WithAndWithoutBodyRead(Arm arm, bool readBody) + { + { + var (suite, server, _, client) = Start(arm, readBody); + using (suite) + using (client) + { + var body = new string('B', 500_000); + server.HandleRequest(async ctx => + { + ctx.Response.ContentType = "application/octet-stream"; + for (var i = 0; i < body.Length; i += 10_000) + await ctx.Response.WriteAsync(body.Substring(i, 10_000)); + }); + + var response = await client.GetAsync($"https://localhost:{server.HttpsListeningPort}/big"); + var text = await response.Content.ReadAsStringAsync(); + Assert.AreEqual(HttpStatusCode.OK, response.StatusCode, $"readBody={readBody}"); + Assert.AreEqual(body.Length, text.Length, $"readBody={readBody}"); + } + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(Arm.Direct)] + [DataRow(Arm.ForcedHttp11Bridge)] + public async Task Post_LargeBody_RoundTrips(Arm arm) + { + var (suite, server, _, client) = Start(arm); + using (suite) + using (client) + { + var payload = new string('u', 300_000); + server.HandleRequest(async ctx => + { + using var reader = new System.IO.StreamReader(ctx.Request.Body); + var received = await reader.ReadToEndAsync(); + await ctx.Response.WriteAsync($"len={received.Length}"); + }); + + using var content = new StringContent(payload, Encoding.UTF8, "application/json"); + var response = await client.PostAsync($"https://localhost:{server.HttpsListeningPort}/post", content); + Assert.AreEqual($"len={payload.Length}", await response.Content.ReadAsStringAsync()); + } + } + + [TestMethod] + [Timeout(90 * 1000)] + [DataRow(Arm.Direct)] + [DataRow(Arm.ForcedHttp11Bridge)] + public async Task ConcurrentRequests_MixedSizes_AllComplete(Arm arm) + { + var (suite, server, _, client) = Start(arm); + using (suite) + using (client) + { + server.HandleRequest(async ctx => + { + var big = ctx.Request.Path.Value!.Contains("big", StringComparison.Ordinal); + await ctx.Response.WriteAsync(new string('c', big ? 150_000 : 32)); + }); + + var tasks = Enumerable.Range(0, 24).Select(async i => + { + var path = i % 3 == 0 ? $"/big/{i}" : $"/s/{i}"; + var response = await client.GetAsync($"https://localhost:{server.HttpsListeningPort}{path}"); + return (i, (await response.Content.ReadAsStringAsync()).Length); + }).ToArray(); + + foreach (var (i, length) in await Task.WhenAll(tasks)) + Assert.AreEqual(i % 3 == 0 ? 150_000 : 32, length, $"request {i}"); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(Arm.Direct)] + [DataRow(Arm.ForcedHttp11Bridge)] + public async Task NoContent_And_ErrorStatuses_Complete_And_ConnectionSurvives(Arm arm) + { + var (suite, server, _, client) = Start(arm); + using (suite) + using (client) + { + server.HandleRequest(async ctx => + { + switch (ctx.Request.Path.Value) + { + case "/204": + ctx.Response.StatusCode = 204; + break; + case "/404": + ctx.Response.StatusCode = 404; + await ctx.Response.WriteAsync("{\"errors\":[]}"); + break; + default: + await ctx.Response.WriteAsync("ok"); + break; + } + }); + + var baseUrl = $"https://localhost:{server.HttpsListeningPort}"; + Assert.AreEqual(HttpStatusCode.NoContent, (await client.GetAsync(baseUrl + "/204")).StatusCode); + var notFound = await client.GetAsync(baseUrl + "/404"); + Assert.AreEqual(HttpStatusCode.NotFound, notFound.StatusCode); + Assert.AreEqual("{\"errors\":[]}", await notFound.Content.ReadAsStringAsync()); + Assert.AreEqual("ok", await (await client.GetAsync(baseUrl + "/after")).Content.ReadAsStringAsync()); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(Arm.Direct)] + [DataRow(Arm.ForcedHttp11Bridge)] + public async Task BeforeResponse_Replace_And_BeforeRequest_Synthetic_ThenNormalRequestsWork(Arm arm) + { + var (suite, server, _, client) = Start(arm, readResponseBody: false, configure: proxy => + { + proxy.BeforeRequest += (_, e) => + { + if (e.HttpClient.Request.RequestUri.AbsolutePath == "/blocked") + e.Ok("synthetic"); + return Task.CompletedTask; + }; + proxy.BeforeResponse += (_, e) => + { + if (e.HttpClient.Request.RequestUri.AbsolutePath == "/replace") + e.Ok("replaced"); + return Task.CompletedTask; + }; + }); + using (suite) + using (client) + { + server.HandleRequest(async ctx => await ctx.Response.WriteAsync("origin" + ctx.Request.Path)); + var baseUrl = $"https://localhost:{server.HttpsListeningPort}"; + for (var i = 0; i < 8; i++) + { + Assert.AreEqual("synthetic", await (await client.GetAsync(baseUrl + "/blocked")).Content.ReadAsStringAsync()); + Assert.AreEqual("replaced", await (await client.GetAsync(baseUrl + "/replace")).Content.ReadAsStringAsync()); + Assert.AreEqual("origin/keep", await (await client.GetAsync(baseUrl + "/keep")).Content.ReadAsStringAsync()); + } + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(Arm.Direct)] + [DataRow(Arm.ForcedHttp11Bridge)] + public async Task SlowBody_BeforeResponseGetBody_Completes(Arm arm) + { + var (suite, server, _, client) = Start(arm); + using (suite) + using (client) + { + server.HandleRequest(async ctx => + { + for (var i = 0; i < 5; i++) + { + await ctx.Response.WriteAsync("chunk" + i); + await ctx.Response.Body.FlushAsync(); + await Task.Delay(100); + } + }); + + var response = await client.GetAsync($"https://localhost:{server.HttpsListeningPort}/slow"); + Assert.AreEqual("chunk0chunk1chunk2chunk3chunk4", await response.Content.ReadAsStringAsync()); + } + } + + [TestMethod] + [Timeout(120 * 1000)] + [DataRow(1)] + [DataRow(2)] + [DataRow(3)] + [DataRow(4)] + public async Task LargeBody_BufferedProxyThenStreamingProxy_InOneTest_BothComplete(int instance) + { + // Two proxies back to back in one process (buffered GetResponseBody first, then streaming hook only): + // the second used to stall intermittently on the body-write hook path (lost WINDOW_UPDATE wakeup). + _ = instance; + var body = new string('B', 500_000); + foreach (var readBody in new[] { true, false }) + { + var (suite, server, _, client) = Start(Arm.Direct, readBody); + using (suite) + using (client) + { + server.HandleRequest(async ctx => + { + for (var i = 0; i < body.Length; i += 10_000) + await ctx.Response.WriteAsync(body.Substring(i, 10_000)); + }); + + var response = await client.GetAsync($"https://localhost:{server.HttpsListeningPort}/big"); + var text = await response.Content.ReadAsStringAsync(); + Assert.AreEqual(body.Length, text.Length, $"readBody={readBody}"); + } + } + } +} \ No newline at end of file diff --git a/tests/Titanium.Web.Proxy.IntegrationTests/Http2ToHttp3InspectorRegressionTests.cs b/tests/Titanium.Web.Proxy.IntegrationTests/Http2ToHttp3InspectorRegressionTests.cs new file mode 100644 index 000000000..6304f0cb7 --- /dev/null +++ b/tests/Titanium.Web.Proxy.IntegrationTests/Http2ToHttp3InspectorRegressionTests.cs @@ -0,0 +1,441 @@ +#pragma warning disable CA1416 +#pragma warning disable TWP001 + +using System; +using System.Collections.Generic; +using System.IO; +using System.IO.Compression; +using System.Linq; +using System.Net; +using System.Net.Http; +using System.Net.Quic; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Titanium.Web.Proxy.IntegrationTests.Helpers; +using Titanium.Web.Proxy.IntegrationTests.Setup; +using Titanium.Web.Proxy.Models; + +namespace Titanium.Web.Proxy.IntegrationTests; + +/// +/// Regression matrix for the x.com failures seen through the Inspector: a browser (HTTP/2 client) talking +/// to an HTTP/3 origin (api.x.com advertises Alt-Svc) through the MITM bridge with the Inspector's hook +/// set attached (BeforeRequest, BeforeResponse + GetResponseBody, +/// OnRequestBodyWrite, OnResponseBodyWrite). Failure modes covered: +/// +/// QuicStream disposed before the response body writer ran (ObjectDisposedException); +/// response DATA gated on a handler that waits for that DATA (every request hangs); +/// deferred END_STREAM lost behind a short client window (body never ends); +/// origin stream / lease leaks when BeforeResponse replaces the response or a request is synthetic. +/// +/// Every scenario runs on both the cold (CONNECT-time bridge) and warm (capability-cache) entry paths. +/// +[TestClass] +public class Http2ToHttp3InspectorRegressionTests +{ + private static void RequireQuic() + { + if (!QuicListener.IsSupported || !QuicConnection.IsSupported) + Assert.Inconclusive("MsQuic / System.Net.Quic is not supported on this platform."); + } + + /// Same hook set the Inspector installs (all no-op unless a test overrides behaviour). + private static void AttachInspectorLikeHooks(ProxyServer proxy, bool readResponseBody = true) + { + proxy.BeforeRequest += (_, _) => Task.CompletedTask; + proxy.BeforeResponse += async (_, e) => + { + if (readResponseBody && e.HttpClient.Response.HasBody) + await e.GetResponseBody(); + }; + proxy.OnRequestBodyWrite += (_, _) => Task.CompletedTask; + proxy.OnResponseBodyWrite += (_, _) => Task.CompletedTask; + } + + private static void RouteToHttp3(ProxyServer proxy, QuicHttp3OriginServer origin, bool warm) + { + proxy.EnableHttp2 = true; + proxy.EnableHttp3 = true; + proxy.EnableHttpsSvcbDnsDiscovery = false; + + if (warm) + { + proxy.Http3OriginCapabilityCache.Set($"localhost:{origin.Port}", int.MinValue, + TimeSpan.FromMinutes(5), targetName: null); + proxy.Http3WarmOrigins.Mark("localhost", origin.Port); + proxy.BeforeRequest += (_, args) => + { + args.UpstreamHttpProtocol = UpstreamHttpProtocol.Auto; + return Task.CompletedTask; + }; + } + else + { + var endpoint = (ExplicitProxyEndPoint)proxy.ProxyEndPoints[0]; + endpoint.BeforeTunnelConnectRequest += (_, e) => + { + e.UpstreamHttpProtocol = UpstreamHttpProtocol.Http3; + e.AllowHttpProtocolTranslation = true; + return Task.CompletedTask; + }; + } + } + + private static (TestSuite Suite, ProxyServer Proxy, HttpClient Client) Start( + QuicHttp3OriginServer origin, bool warm, bool readResponseBody = true) + { + var suite = new TestSuite(); + var proxy = suite.GetProxy(); + AttachInspectorLikeHooks(proxy, readResponseBody); + RouteToHttp3(proxy, origin, warm); + var client = TestHelper.GetHttp2Client(proxy); + client.Timeout = TimeSpan.FromSeconds(20); + return (suite, proxy, client); + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task Get_Json_WithResponseBodyRead_DeliversBody(bool warm) + { + RequireQuic(); + const string json = "{\"data\":{\"viewer\":{\"id\":\"1\"}}}"; + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(_ => Task.FromResult( + new QuicHttp3Response(200, json, Encoding.UTF8.GetBytes(json), contentType: "application/json"))); + + var (suite, _, client) = Start(origin, warm); + using (suite) + using (client) + { + var response = await client.GetAsync($"https://localhost:{origin.Port}/graphql"); + Assert.AreEqual(HttpStatusCode.OK, response.StatusCode); + Assert.AreEqual(json, await response.Content.ReadAsStringAsync()); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task Get_WithoutResponseBodyRead_StreamsThroughBodyHook(bool warm) + { + RequireQuic(); + var body = new string('s', 150_000); + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(_ => Task.FromResult(new QuicHttp3Response(200, body, + Encoding.UTF8.GetBytes(body), dataFrameSize: 8 * 1024))); + + var (suite, _, client) = Start(origin, warm, readResponseBody: false); + using (suite) + using (client) + { + var response = await client.GetAsync($"https://localhost:{origin.Port}/stream"); + Assert.AreEqual(HttpStatusCode.OK, response.StatusCode); + Assert.AreEqual(body, await response.Content.ReadAsStringAsync()); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task Get_LargeMultiFrameBody_WithResponseBodyRead_ExceedsClientWindow(bool warm) + { + RequireQuic(); + var body = new string('L', 400_000); + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(_ => Task.FromResult(new QuicHttp3Response(200, body, + Encoding.UTF8.GetBytes(body), dataFrameSize: 16 * 1024))); + + var (suite, _, client) = Start(origin, warm); + using (suite) + using (client) + { + var response = await client.GetAsync($"https://localhost:{origin.Port}/large"); + Assert.AreEqual(HttpStatusCode.OK, response.StatusCode); + Assert.AreEqual(body.Length, (await response.Content.ReadAsStringAsync()).Length); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task Post_JsonBody_RoundTrips_WithBodyWriteHooks(bool warm) + { + RequireQuic(); + var payload = new string('p', 70_000); // > default 64 KiB stream window + byte[]? seen = null; + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(req => + { + seen = req.Body; + return Task.FromResult(new QuicHttp3Response(200, $"len={req.Body.Length}")); + }); + + var (suite, _, client) = Start(origin, warm); + using (suite) + using (client) + { + using var content = new StringContent(payload, Encoding.UTF8, "application/json"); + var response = await client.PostAsync($"https://localhost:{origin.Port}/post", content); + Assert.AreEqual(HttpStatusCode.OK, response.StatusCode); + Assert.AreEqual($"len={payload.Length}", await response.Content.ReadAsStringAsync()); + Assert.AreEqual(payload, Encoding.UTF8.GetString(seen!)); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task ManySequentialRequests_OnOneConnection_ReleaseOriginStreams(bool warm) + { + RequireQuic(); + var counter = 0; + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(_ => Task.FromResult(new QuicHttp3Response(200, $"r{Interlocked.Increment(ref counter)}"))); + + var (suite, _, client) = Start(origin, warm); + using (suite) + using (client) + { + for (var i = 0; i < 40; i++) + { + var response = await client.GetAsync($"https://localhost:{origin.Port}/n/{i}"); + Assert.AreEqual(HttpStatusCode.OK, response.StatusCode, $"request {i}"); + Assert.IsTrue((await response.Content.ReadAsStringAsync()).StartsWith('r'), $"request {i}"); + } + } + + Assert.AreEqual(40, counter); + } + + [TestMethod] + [Timeout(90 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task ConcurrentRequests_MixedSizes_AllComplete(bool warm) + { + RequireQuic(); + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(req => + { + var size = req.Path.Contains("big", StringComparison.Ordinal) ? 120_000 : 64; + var text = new string('c', size); + return Task.FromResult(new QuicHttp3Response(200, text, Encoding.UTF8.GetBytes(text), + dataFrameSize: 8 * 1024)); + }); + + var (suite, _, client) = Start(origin, warm); + using (suite) + using (client) + { + var tasks = Enumerable.Range(0, 24).Select(async i => + { + var path = i % 4 == 0 ? $"/big/{i}" : $"/small/{i}"; + var response = await client.GetAsync($"https://localhost:{origin.Port}{path}"); + var text = await response.Content.ReadAsStringAsync(); + return (i, response.StatusCode, text.Length); + }).ToArray(); + + var results = await Task.WhenAll(tasks); + foreach (var (i, status, length) in results) + { + Assert.AreEqual(HttpStatusCode.OK, status, $"request {i}"); + Assert.AreEqual(i % 4 == 0 ? 120_000 : 64, length, $"request {i}"); + } + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task EmptyAndErrorResponses_Complete(bool warm) + { + RequireQuic(); + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(req => Task.FromResult(req.Path switch + { + "/204" => new QuicHttp3Response(204, string.Empty, Array.Empty()), + "/404" => new QuicHttp3Response(404, "{\"errors\":[{\"code\":34}]}"), + "/429" => new QuicHttp3Response(429, "rate", Encoding.UTF8.GetBytes("rate"), + new[] { ("retry-after", "1") }), + _ => new QuicHttp3Response(200, "ok") + })); + + var (suite, _, client) = Start(origin, warm); + using (suite) + using (client) + { + var noContent = await client.GetAsync($"https://localhost:{origin.Port}/204"); + Assert.AreEqual(HttpStatusCode.NoContent, noContent.StatusCode); + Assert.AreEqual(0, (await noContent.Content.ReadAsByteArrayAsync()).Length); + + var notFound = await client.GetAsync($"https://localhost:{origin.Port}/404"); + Assert.AreEqual(HttpStatusCode.NotFound, notFound.StatusCode); + StringAssert.Contains(await notFound.Content.ReadAsStringAsync(), "errors"); + + var limited = await client.GetAsync($"https://localhost:{origin.Port}/429"); + Assert.AreEqual((HttpStatusCode)429, limited.StatusCode); + Assert.AreEqual("1", limited.Headers.GetValues("retry-after").Single()); + + // The connection must still be healthy afterwards. + var ok = await client.GetAsync($"https://localhost:{origin.Port}/after"); + Assert.AreEqual("ok", await ok.Content.ReadAsStringAsync()); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task BeforeResponse_ReplacesResponse_ReleasesOriginStream_NextRequestWorks(bool warm) + { + RequireQuic(); + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(req => Task.FromResult(new QuicHttp3Response(200, "origin:" + req.Path, + Encoding.UTF8.GetBytes("origin:" + req.Path), dataFrameSize: 4 * 1024))); + + var suite = new TestSuite(); + var proxy = suite.GetProxy(); + AttachInspectorLikeHooks(proxy, readResponseBody: false); + proxy.BeforeResponse += (_, e) => + { + if (e.HttpClient.Request.RequestUri.AbsolutePath == "/replace") + e.Ok("replaced"); + return Task.CompletedTask; + }; + RouteToHttp3(proxy, origin, warm); + using (suite) + using (var client = TestHelper.GetHttp2Client(proxy)) + { + client.Timeout = TimeSpan.FromSeconds(20); + for (var i = 0; i < 10; i++) + { + var replaced = await client.GetAsync($"https://localhost:{origin.Port}/replace"); + Assert.AreEqual("replaced", await replaced.Content.ReadAsStringAsync(), $"iteration {i}"); + var passthrough = await client.GetAsync($"https://localhost:{origin.Port}/keep"); + Assert.AreEqual("origin:/keep", await passthrough.Content.ReadAsStringAsync(), $"iteration {i}"); + } + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task BeforeRequest_SyntheticResponse_DoesNotTouchOrigin_AndConnectionSurvives(bool warm) + { + RequireQuic(); + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(_ => Task.FromResult(new QuicHttp3Response(200, "origin"))); + + var suite = new TestSuite(); + var proxy = suite.GetProxy(); + AttachInspectorLikeHooks(proxy); + proxy.BeforeRequest += (_, e) => + { + if (e.HttpClient.Request.RequestUri.AbsolutePath == "/blocked") + e.Ok("synthetic"); + return Task.CompletedTask; + }; + RouteToHttp3(proxy, origin, warm); + using (suite) + using (var client = TestHelper.GetHttp2Client(proxy)) + { + client.Timeout = TimeSpan.FromSeconds(20); + var blocked = await client.GetAsync($"https://localhost:{origin.Port}/blocked"); + Assert.AreEqual("synthetic", await blocked.Content.ReadAsStringAsync()); + var real = await client.GetAsync($"https://localhost:{origin.Port}/real"); + Assert.AreEqual("origin", await real.Content.ReadAsStringAsync()); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + [DataRow(false)] + [DataRow(true)] + public async Task GzipJson_WithResponseBodyRead_IsDecodableByClient(bool warm) + { + RequireQuic(); + var json = "{\"items\":[" + string.Join(",", Enumerable.Range(0, 2000).Select(i => $"{{\"i\":{i}}}")) + "]}"; + byte[] gz; + using (var ms = new MemoryStream()) + { + using (var gzip = new GZipStream(ms, CompressionLevel.Fastest, leaveOpen: true)) + gzip.Write(Encoding.UTF8.GetBytes(json)); + gz = ms.ToArray(); + } + + await using var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + origin.HandleRequest(_ => Task.FromResult(new QuicHttp3Response(200, string.Empty, gz, + new[] { ("content-encoding", "gzip") }, "application/json", dataFrameSize: 4 * 1024))); + + var (suite, _, client) = Start(origin, warm); + using (suite) + using (client) + { + var response = await client.GetAsync($"https://localhost:{origin.Port}/gz"); + Assert.AreEqual(HttpStatusCode.OK, response.StatusCode); + // HttpClient (no AutomaticDecompression) sees the wire bytes; either encoded or already + // decoded by the proxy is acceptable, but the payload must be intact JSON when decoded. + var bytes = await response.Content.ReadAsByteArrayAsync(); + var decoded = response.Content.Headers.ContentEncoding.Contains("gzip") + ? Decode(bytes) + : Encoding.UTF8.GetString(bytes); + Assert.AreEqual(json, decoded); + } + + static string Decode(byte[] data) + { + using var input = new MemoryStream(data); + using var gzip = new GZipStream(input, CompressionMode.Decompress); + using var reader = new StreamReader(gzip, Encoding.UTF8); + return reader.ReadToEnd(); + } + } + + [TestMethod] + [Timeout(60 * 1000)] + public async Task ColdBridge_OriginClosedMidStream_DoesNotHangClient() + { + RequireQuic(); + var origin = new QuicHttp3OriginServer(TestCertificateAuthority.ServerCertificate); + var port = origin.Port; + origin.HandleRequest(async request => + { + // Give the proxy time to commit HEADERS, then drop the whole listener. + _ = Task.Run(async () => + { + await Task.Delay(50); + await origin.DisposeAsync(); + }); + await Task.Delay(500); + return new QuicHttp3Response(200, "late"); + }); + + var (suite, _, client) = Start(origin, warm: false); + using (suite) + using (client) + { + // Any outcome other than hanging is acceptable: a response or a clean failure. + try + { + using var response = await client.GetAsync($"https://localhost:{port}/die"); + _ = await response.Content.ReadAsStringAsync(); + } + catch (HttpRequestException) + { + } + catch (IOException) + { + } + } + } +} From 41f4adee5632e01c811a6e366e629dac6089fafb Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 16:09:39 +0530 Subject: [PATCH 12/17] perf: trim per-request allocations on H1/H2/H3 hot paths - HeaderCollection: lazily allocate non-unique header maps (null-tolerant enumerator/COW) - H1 terminate-lite: reuse HttpWebClient/Response shells via await-safe ConcurrentBag (ThreadStatic raced across awaits and produced 'HTTP/0.0 0' under load) - H3 request stream: pool per-stream session CTS (connection-token link kept) and allocate the cold-open session stub lazily - H2 origin: raise eager-buffer threshold 8 KiB -> 64 KiB to match H3->H1 bridge - RequestHandler: run ReverseProxySessionDispatch.TryApply before taking the MITM COW baseline so RequestHeaderSet transforms stay on the lite path; add tests - RpsLoadProbe: TWP_RPS_THREADPOOL_MIN / CLIENT_HEADER_TIMEOUT / REQUEST_TIMEOUT knobs - wiki: correct stale duplex-H2 note, tag reverted experiments CI-proven vs laptop-only, record the 2026-10-01 re-measure pass, fix Block A prose A pooled HPACK header-fragment buffer was tried and dropped in review: the captured block is shared with the async relay and stream-state recycle, so return-on-clear could double-return the array. --- .../Handlers/H1TerminateFastForward.cs | 40 +++++- .../Handlers/RequestHandler.cs | 9 +- .../Http/HeaderCollection.cs | 122 ++++++++++++------ .../Http2/Http2OriginConnection.cs | 7 +- .../Http3/Http3Connection.cs | 20 ++- .../Http3/Http3RequestStream.cs | 32 +++-- .../Network/HttpWebClient.cs | 25 +++- .../MitmCompressedRelayHelperTests.cs | 33 +++++ tools/RpsLoadProbe/TwpProxyHost.cs | 14 ++ wiki/Performance-Profiling.md | 44 +++++-- wiki/Performance.md | 2 +- 11 files changed, 277 insertions(+), 71 deletions(-) diff --git a/src/Titanium.Web.Proxy/Handlers/H1TerminateFastForward.cs b/src/Titanium.Web.Proxy/Handlers/H1TerminateFastForward.cs index a484e960b..9dbaf57d0 100644 --- a/src/Titanium.Web.Proxy/Handlers/H1TerminateFastForward.cs +++ b/src/Titanium.Web.Proxy/Handlers/H1TerminateFastForward.cs @@ -1,4 +1,5 @@ using System; +using System.Collections.Concurrent; using System.Collections.Generic; using System.IO; using System.Net; @@ -37,6 +38,36 @@ public partial class ProxyServer private static readonly Lazy H1TerminateLiteProcessId = new(() => 0); private static readonly object H1TerminateLiteMiddlewareSession = new(); + /// + /// Await-safe shell pool for terminate-lite. ThreadStatic is unsafe here: a second Rent on the + /// same worker can while the first request + /// still awaits across the shared Response (HTTP/0.0 0 / spliced status lines under load). + /// + private static readonly ConcurrentBag H1TerminateLiteClients = new(); + private const int H1TerminateLiteClientPoolCap = 256; + + private static HttpWebClient RentH1TerminateLiteClient(Request request) + { + if (H1TerminateLiteClients.TryTake(out var client)) + { + client.RebindForTerminateLite(request); + return client; + } + + client = new HttpWebClient(null, request, H1TerminateLiteProcessId); + // Force Response materialization once so Rebind can ResetForKeepAlive. + _ = client.Response; + return client; + } + + private static void ReleaseH1TerminateLiteClient(HttpWebClient client) + { + // Drop the origin socket reference so TcpConnectionFactory.Release remains the sole owner. + client.RebindForTerminateLite(client.Request); + if (H1TerminateLiteClients.Count < H1TerminateLiteClientPoolCap) + H1TerminateLiteClients.Add(client); + } + /// /// Interception-off transparent reverse with fixed : /// bodiless GET/HEAD without allocating (H3→H1 session-lite analogue). @@ -159,7 +190,9 @@ internal bool CanUseH1TerminateLite(ProxyEndPoint endPoint, Request request, boo endPoint.CachedHttp11PoolIsHttps = isHttps; } - var http = new HttpWebClient(null, request, H1TerminateLiteProcessId); + var http = RentH1TerminateLiteClient(request); + try + { http.SetConnection(connection); await http.SendRequest(false, isTransparent: true, OriginHttpVersionPolicy, cancellationToken); await http.ReceiveResponse(cancellationToken); @@ -263,6 +296,11 @@ await connection.Stream.CopyBodyAsync(response, false, clientStream, Transformat // Client Connection: close (NC) → stop accept-loop KA (origin may stay pooled). return response.KeepAlive && !clientRequestedClose; + } + finally + { + ReleaseH1TerminateLiteClient(http); + } } catch (RetryableServerConnectionException) { diff --git a/src/Titanium.Web.Proxy/Handlers/RequestHandler.cs b/src/Titanium.Web.Proxy/Handlers/RequestHandler.cs index d1bc041b4..394c49d2f 100644 --- a/src/Titanium.Web.Proxy/Handlers/RequestHandler.cs +++ b/src/Titanium.Web.Proxy/Handlers/RequestHandler.cs @@ -372,6 +372,12 @@ public partial class ProxyServer return; } + // Route transforms (RequestHeaderSet / PathPrefix / …) must run while the + // Mitm COW baseline is still armed so append-only sets stay on terminate-lite. + // Taking the baseline before TryApply made MutationCount diverge and forced + // the full session path (~0.75× CLI reverse for intercept-http1). + Routing.ReverseProxySessionDispatch.TryApply(this, args); + var requestHeaderRelayBaseline = request.Headers.TakeMitmRelayBaseline(); // Total per-request deadline starts after BeforeRequest so session overrides apply. @@ -380,9 +386,6 @@ public partial class ProxyServer var requestToken = requestDeadline.Token; args.OperationCancellationToken = requestToken; - // Per-request route → destination (no-op when ReverseProxy routes unset). - Routing.ReverseProxySessionDispatch.TryApply(this, args); - try { if (!args.IsTransparent && !args.IsSocks) diff --git a/src/Titanium.Web.Proxy/Http/HeaderCollection.cs b/src/Titanium.Web.Proxy/Http/HeaderCollection.cs index 2c090b6ff..37d00522a 100644 --- a/src/Titanium.Web.Proxy/Http/HeaderCollection.cs +++ b/src/Titanium.Web.Proxy/Http/HeaderCollection.cs @@ -16,9 +16,27 @@ public class HeaderCollection : IEnumerable { private Dictionary headers; - private Dictionary> nonUniqueHeaders; + /// + /// Lazy: almost all GET/HEAD exchanges use only unique headers. Allocated on first + /// Cookie/Set-Cookie-style duplicate name (see ). + /// + private Dictionary>? nonUniqueHeaders; + + private Dictionary>? nonUniqueHeadersReadOnly; + + private static readonly ReadOnlyDictionary> EmptyNonUniqueHeadersView = + new(new Dictionary>(0, StringComparer.OrdinalIgnoreCase)); + + private void EnsureNonUniqueMaps() + { + if (nonUniqueHeaders is not null) + return; - private Dictionary> nonUniqueHeadersReadOnly; + nonUniqueHeaders = new Dictionary>(2, StringComparer.OrdinalIgnoreCase); + nonUniqueHeadersReadOnly = + new Dictionary>(2, StringComparer.OrdinalIgnoreCase); + nonUniqueHeadersView = null; + } /// /// Monotonic counter bumped on every mutating API (, , @@ -99,7 +117,7 @@ internal void TakeContentsFrom(HeaderCollection source) if (ReferenceEquals(this, source)) return; - if (headers.Count != 0 || nonUniqueHeaders.Count != 0) + if (headers.Count != 0 || (nonUniqueHeaders is { Count: > 0 })) { foreach (var header in source) AddHeader(header); @@ -149,18 +167,25 @@ private void EnsureMitmRelayCowSnapshot() foreach (var kv in headers) unique[kv.Key] = kv.Value.Value; - var nonUnique = new Dictionary>(StringComparer.OrdinalIgnoreCase); - foreach (var kv in nonUniqueHeaders) + Dictionary>? nonUnique = null; + var nonUniqueNames = 0; + if (nonUniqueHeaders is { Count: > 0 }) { - var values = new List(kv.Value.Count); - foreach (var h in kv.Value) - values.Add(h.Value); - nonUnique[kv.Key] = values; + nonUnique = new Dictionary>(nonUniqueHeaders.Count, StringComparer.OrdinalIgnoreCase); + foreach (var kv in nonUniqueHeaders) + { + var values = new List(kv.Value.Count); + foreach (var h in kv.Value) + values.Add(h.Value); + nonUnique[kv.Key] = values; + } + + nonUniqueNames = nonUniqueHeaders.Count; } _mitmRelayCowUnique = unique; _mitmRelayCowNonUnique = nonUnique; - _mitmRelayCowNonUniqueNames = nonUniqueHeaders.Count; + _mitmRelayCowNonUniqueNames = nonUniqueNames; _mitmRelayAppends = default; _mitmRelayAppendDirty = false; } @@ -170,12 +195,9 @@ private void EnsureMitmRelayCowSnapshot() /// public HeaderCollection() { - // Probe GETs / H2 Lite carry a handful of unique headers; keep the three maps small - // so empty Request/Response shells (before TakeContentsFrom) cost less per stream. + // Probe GETs / H2 Lite carry a handful of unique headers; keep the unique map small. + // Non-unique maps stay null until a duplicate name is added (Cookie / Set-Cookie / …). headers = new Dictionary(8, StringComparer.OrdinalIgnoreCase); - nonUniqueHeaders = new Dictionary>(2, StringComparer.OrdinalIgnoreCase); - nonUniqueHeadersReadOnly = - new Dictionary>(2, StringComparer.OrdinalIgnoreCase); } private ReadOnlyDictionary? headersView; @@ -192,7 +214,10 @@ public HeaderCollection() /// Add/Clear storage that still belongs to this collection. /// public ReadOnlyDictionary> NonUniqueHeaders => - nonUniqueHeadersView ??= new ReadOnlyDictionary>(nonUniqueHeadersReadOnly); + nonUniqueHeaders is null + ? EmptyNonUniqueHeadersView + : nonUniqueHeadersView ??= + new ReadOnlyDictionary>(nonUniqueHeadersReadOnly!); /// /// Returns an enumerator that iterates through the collection. @@ -243,11 +268,15 @@ public struct Enumerator : IEnumerator private List.Enumerator nonUniqueInnerEnumerator; private bool doneWithUnique; private bool hasInnerEnumerator; + private readonly bool hasNonUnique; internal Enumerator(HeaderCollection collection) { uniqueEnumerator = collection.headers.Values.GetEnumerator(); - nonUniqueOuterEnumerator = collection.nonUniqueHeaders.Values.GetEnumerator(); + hasNonUnique = collection.nonUniqueHeaders is { Count: > 0 }; + nonUniqueOuterEnumerator = hasNonUnique + ? collection.nonUniqueHeaders!.Values.GetEnumerator() + : default; nonUniqueInnerEnumerator = default; doneWithUnique = false; hasInnerEnumerator = false; @@ -271,6 +300,12 @@ public bool MoveNext() doneWithUnique = true; } + if (!hasNonUnique) + { + Current = null!; + return false; + } + while (true) { if (hasInnerEnumerator) @@ -312,7 +347,8 @@ public void Dispose() /// public bool HeaderExists(string name) { - return headers.ContainsKey(name) || nonUniqueHeaders.ContainsKey(name); + return headers.ContainsKey(name) || + (nonUniqueHeaders is not null && nonUniqueHeaders.ContainsKey(name)); } /// @@ -329,7 +365,7 @@ public bool HeaderExists(string name) header }; - if (nonUniqueHeaders.TryGetValue(name, out var nonUnique)) + if (nonUniqueHeaders is not null && nonUniqueHeaders.TryGetValue(name, out var nonUnique)) return new List(nonUnique); return null; @@ -339,7 +375,7 @@ public bool HeaderExists(string name) { if (headers.TryGetValue(name, out var header)) return header; - if (nonUniqueHeaders.TryGetValue(name, out var h)) return h.FirstOrDefault(); + if (nonUniqueHeaders is not null && nonUniqueHeaders.TryGetValue(name, out var h)) return h.FirstOrDefault(); return null; } @@ -348,7 +384,7 @@ public bool HeaderExists(string name) { if (headers.TryGetValue(name.String, out var header)) return header; - if (nonUniqueHeaders.TryGetValue(name.String, out var h)) return h.FirstOrDefault(); + if (nonUniqueHeaders is not null && nonUniqueHeaders.TryGetValue(name.String, out var h)) return h.FirstOrDefault(); return null; } @@ -377,14 +413,18 @@ public List GetAllHeaders() // headers.Count + nonUniqueHeaders.Count undercounts when any non-unique entry has more than one // value, but it is still a better starting capacity than the default (0), and List grows from // there exactly as it would have without this hint. - var result = new List(headers.Count + nonUniqueHeaders.Count); + var nonUniqueCount = nonUniqueHeaders?.Count ?? 0; + var result = new List(headers.Count + nonUniqueCount); foreach (var header in headers.Values) result.Add(header); - foreach (var list in nonUniqueHeaders.Values) + if (nonUniqueHeaders is not null) { - foreach (var header in list) - result.Add(header); + foreach (var list in nonUniqueHeaders.Values) + { + foreach (var header in list) + result.Add(header); + } } return result; @@ -418,7 +458,7 @@ public void AddHeader(HttpHeader newHeader) { if (_mitmRelayCowArmed && _mitmRelayCowUnique is null && !_mitmRelayAppendDirty && !headers.ContainsKey(newHeader.Name) - && !nonUniqueHeaders.ContainsKey(newHeader.Name) + && (nonUniqueHeaders is null || !nonUniqueHeaders.ContainsKey(newHeader.Name)) && _mitmRelayAppends.Count < Helpers.MitmCompressedRelayHelper.DefaultMaxAppendHeaders) { // Pure append of a new unique name: log for compressed relay without cloning wire headers. @@ -431,7 +471,7 @@ public void AddHeader(HttpHeader newHeader) EnsureMitmRelayCowSnapshot(); MutationCount++; // if header exist in non-unique header collection add it there - if (nonUniqueHeaders.TryGetValue(newHeader.Name, out var list)) + if (nonUniqueHeaders is not null && nonUniqueHeaders.TryGetValue(newHeader.Name, out var list)) { list.Add(newHeader); return; @@ -447,8 +487,9 @@ public void AddHeader(HttpHeader newHeader) existing, newHeader }; - nonUniqueHeaders.Add(newHeader.Name, moved); - nonUniqueHeadersReadOnly.Add(newHeader.Name, new ReadOnlyCollection(moved)); + EnsureNonUniqueMaps(); + nonUniqueHeaders!.Add(newHeader.Name, moved); + nonUniqueHeadersReadOnly!.Add(newHeader.Name, new ReadOnlyCollection(moved)); } else { @@ -511,9 +552,9 @@ public bool RemoveHeader(string headerName) var result = headers.Remove(headerName); // do not convert to '||' expression to avoid lazy evaluation - if (nonUniqueHeaders.Remove(headerName)) + if (nonUniqueHeaders is not null && nonUniqueHeaders.Remove(headerName)) { - nonUniqueHeadersReadOnly.Remove(headerName); + nonUniqueHeadersReadOnly!.Remove(headerName); result = true; } @@ -535,9 +576,9 @@ public bool RemoveHeader(KnownHeader headerName) var result = headers.Remove(headerName.String); // do not convert to '||' expression to avoid lazy evaluation - if (nonUniqueHeaders.Remove(headerName.String)) + if (nonUniqueHeaders is not null && nonUniqueHeaders.Remove(headerName.String)) { - nonUniqueHeadersReadOnly.Remove(headerName.String); + nonUniqueHeadersReadOnly!.Remove(headerName.String); result = true; } @@ -564,7 +605,8 @@ public bool RemoveHeader(HttpHeader header) return false; } - if (nonUniqueHeaders.TryGetValue(header.Name, out var matchingHeaders) && + if (nonUniqueHeaders is not null && + nonUniqueHeaders.TryGetValue(header.Name, out var matchingHeaders) && matchingHeaders.RemoveAll(x => x.Equals(header)) > 0) { MutationCount++; @@ -580,11 +622,11 @@ public bool RemoveHeader(HttpHeader header) public void Clear() { EnsureMitmRelayCowSnapshot(); - if (headers.Count > 0 || nonUniqueHeaders.Count > 0) + if (headers.Count > 0 || (nonUniqueHeaders is { Count: > 0 })) MutationCount++; headers.Clear(); - nonUniqueHeaders.Clear(); - nonUniqueHeadersReadOnly.Clear(); + nonUniqueHeaders?.Clear(); + nonUniqueHeadersReadOnly?.Clear(); } /// @@ -594,8 +636,8 @@ public void Clear() internal void ResetForDecodeScratch() { headers.Clear(); - nonUniqueHeaders.Clear(); - nonUniqueHeadersReadOnly.Clear(); + nonUniqueHeaders?.Clear(); + nonUniqueHeadersReadOnly?.Clear(); MutationCount = 0; _mitmRelayCowArmed = false; _mitmRelayCowUnique = null; @@ -625,7 +667,7 @@ internal void NormalizeNamesToLowercaseAscii() if (!needsRename) return; - var renamed = new List(headers.Count + nonUniqueHeaders.Count); + var renamed = new List(headers.Count + (nonUniqueHeaders?.Count ?? 0)); foreach (var header in this) { var nameData = header.NameData; diff --git a/src/Titanium.Web.Proxy/Http2/Http2OriginConnection.cs b/src/Titanium.Web.Proxy/Http2/Http2OriginConnection.cs index 9ac83f2e4..f7a4f0842 100644 --- a/src/Titanium.Web.Proxy/Http2/Http2OriginConnection.cs +++ b/src/Titanium.Web.Proxy/Http2/Http2OriginConnection.cs @@ -574,7 +574,7 @@ await EnqueueDataWithFlowAsync(streamId, ReadOnlyMemory.Empty, endStream: // Known-CL bodies that exceeded the inline threshold still buffer then return so H1 // deliver can coalesce headers+body. Streaming via StreamBodyWriter pays an extra // pipe+async hop per request for these. - if (response.ContentLength is >= 0 and <= 8 * 1024) + if (response.ContentLength is >= 0 and <= PendingStream.InlineBodyThresholdBytes) { var expected = (int)response.ContentLength; byte[] body; @@ -1776,9 +1776,10 @@ public override ValueTask WriteAsync(ReadOnlyMemory buffer, CancellationTo private sealed class PendingStream : IDisposable { /// - /// Known Content-Length bodies ≤ 8 KiB are filled here on the ReadLoop (no ). + /// Known Content-Length bodies ≤ 64 KiB are filled here on the ReadLoop (no ). + /// Matches H3→H1 / H2→H1 eager-buffer so 64 KiB reverse bodies skip the pipe+async hop. /// - internal const int InlineBodyThresholdBytes = 8 * 1024; + internal const int InlineBodyThresholdBytes = 64 * 1024; private BoundedBodyPipe? bodyPipe; private readonly long maxBodyBytes; diff --git a/src/Titanium.Web.Proxy/Http3/Http3Connection.cs b/src/Titanium.Web.Proxy/Http3/Http3Connection.cs index ba42c2b82..d50c021b5 100644 --- a/src/Titanium.Web.Proxy/Http3/Http3Connection.cs +++ b/src/Titanium.Web.Proxy/Http3/Http3Connection.cs @@ -532,9 +532,25 @@ private async Task FinalizeAllStreamsAsync() { _logger.LogError(ex, "Error in AfterResponse during HTTP/3 connection teardown"); } + + try + { + await state.Cancellation.CancelAsync(); + } + catch (ObjectDisposedException) + { + // Stream path already returned/disposed the CTS. + } + + try + { + state.Cancellation.Dispose(); + } + catch (ObjectDisposedException) + { + // Already returned to the session CTS pool by the stream fast path. + } } - await state.Cancellation.CancelAsync(); - state.Cancellation.Dispose(); } _activeStreams.Clear(); } diff --git a/src/Titanium.Web.Proxy/Http3/Http3RequestStream.cs b/src/Titanium.Web.Proxy/Http3/Http3RequestStream.cs index db59052a7..776701acb 100644 --- a/src/Titanium.Web.Proxy/Http3/Http3RequestStream.cs +++ b/src/Titanium.Web.Proxy/Http3/Http3RequestStream.cs @@ -567,7 +567,7 @@ private static async Task HandleH3OriginFastPathAsync( // NOSONAR S107 -- Parame string normalizedPath, List<(string Name, string Value)> regularHeaders) { - var cts = new CancellationTokenSource(); + var cts = server.RentSessionCancellation(); // Link so connection teardown cancels stream waits even before FinalizeAllStreams runs. using var linkedCts = CancellationTokenSource.CreateLinkedTokenSource(cts.Token, cancellationToken); var streamToken = linkedCts.Token; @@ -617,18 +617,22 @@ private static async Task HandleH3OriginFastPathAsync( // NOSONAR S107 -- Parame OriginAuthorityHost = originAuthorityHost }; + // Allocate the cold-open factory only when a pool miss actually needs a session stub. + // Warm reverse never invokes it — avoid per-stream closure+delegate on the hot path. + SessionEventArgs? coldStub = null; SessionEventArgs ColdOpenSessionFactory() { - // Cold pool miss only (after warmup the open callback is never invoked). + if (coldStub is not null) + return coldStub; var nullStream = new HttpClientStream( server, clientConnection, System.IO.Stream.Null, server.BufferPool, CancellationToken.None, rentReadBuffer: false); var stubCts = new CancellationTokenSource(); - var stub = new SessionEventArgs(server, endPoint, nullStream, null, stubCts); - stub.IsFastPath = true; - stub.CustomUpStreamProxy = authArgs.CustomUpStreamProxy; - stub.UpstreamHttpProtocol = authArgs.UpstreamHttpProtocol; - return stub; + coldStub = new SessionEventArgs(server, endPoint, nullStream, null, stubCts); + coldStub.IsFastPath = true; + coldStub.CustomUpStreamProxy = authArgs.CustomUpStreamProxy; + coldStub.UpstreamHttpProtocol = authArgs.UpstreamHttpProtocol; + return coldStub; } switch (authArgs.UpstreamHttpProtocol) @@ -708,7 +712,19 @@ await SendPreencodedResponseAsync(stream, fwd.PreencodedQpackHeaders, finally { if (Interlocked.CompareExchange(ref streamState.FinalizedFlag, 1, 0) == 0) - cts.Dispose(); + { + try + { + if (!cts.IsCancellationRequested) + cts.Cancel(); + } + catch (ObjectDisposedException) + { + // Already torn down. + } + + server.ReturnSessionCancellation(cts); + } } } diff --git a/src/Titanium.Web.Proxy/Network/HttpWebClient.cs b/src/Titanium.Web.Proxy/Network/HttpWebClient.cs index 3cda9db20..26429223c 100644 --- a/src/Titanium.Web.Proxy/Network/HttpWebClient.cs +++ b/src/Titanium.Web.Proxy/Network/HttpWebClient.cs @@ -126,7 +126,7 @@ internal TcpServerConnection Connection /// /// Web Request. /// - public Request Request { get; } + public Request Request { get; private set; } /// /// Web Response. Created on first access so H2/H3 MITM Lite request-only work @@ -487,4 +487,27 @@ internal void ResetForKeepAlive() UserData = null; } + /// + /// Rebind a pooled lite client onto a new request without allocating a new + /// / response shell (H1 terminate-lite hot path). + /// + internal void RebindForTerminateLite(Request request) + { + connection = null; + upstreamConnectionId = null; + upstreamRemoteEndPoint = null; + upstreamConnectionTiming = null; + CloseServerConnection = false; + Request = request; + if (response is not null) + response.ResetForKeepAlive(); + else + response = new Response(); + data?.Clear(); + UserData = null; + UpStreamEndPoint = null; + UpStreamEndPointIPv4 = null; + UpStreamEndPointIPv6 = null; + } + } \ No newline at end of file diff --git a/tests/Titanium.Web.Proxy.UnitTests/MitmCompressedRelayHelperTests.cs b/tests/Titanium.Web.Proxy.UnitTests/MitmCompressedRelayHelperTests.cs index 5b64dd518..2a68046a1 100644 --- a/tests/Titanium.Web.Proxy.UnitTests/MitmCompressedRelayHelperTests.cs +++ b/tests/Titanium.Web.Proxy.UnitTests/MitmCompressedRelayHelperTests.cs @@ -239,6 +239,39 @@ public void AppendLogBaseline_AllowsRelayWithPrecomputedAdds() Assert.AreEqual("x-twp-rps-probe", added[0].Name); } + [TestMethod] + public void AppendLogBaseline_RequestHeaderSetStyle_SetOrAdd_AllowsRelay() + { + // Mirrors ReverseProxySessionDispatch applying RequestHeaderSet while COW is armed + // (TryApply before TakeMitmRelayBaseline). + var headers = new HeaderCollection(); + headers.AddHeader("accept", "text/html"); + headers.ArmMitmRelayBaseline(); + headers.SetOrAddHeaderValue("X-Route-Probe", "yes"); + var baseline = headers.TakeMitmRelayBaseline(); + + Assert.IsTrue(baseline.TryGetPrecomputedAppends(out var expected)); + Assert.AreEqual(1, expected.Count); + Assert.IsTrue(MitmCompressedRelayHelper.AllowsCompressedRelay( + baseline, headers, MitmCompressedRelayHelper.DefaultMaxAppendHeaders, out var added)); + Assert.AreEqual("X-Route-Probe", added[0].Name); + Assert.AreEqual("yes", added[0].Value); + } + + [TestMethod] + public void HeaderCollection_NonUniqueMapsStayLazyUntilDuplicateName() + { + var headers = new HeaderCollection(); + headers.AddHeader("accept", "text/html"); + headers.AddHeader("host", "example.com"); + Assert.AreEqual(0, headers.NonUniqueHeaders.Count); + + headers.AddHeader("set-cookie", "a=1"); + headers.AddHeader("set-cookie", "b=2"); + Assert.AreEqual(1, headers.NonUniqueHeaders.Count); + Assert.AreEqual(2, headers.NonUniqueHeaders["set-cookie"].Count); + } + [TestMethod] public void DropOnly_Rejected() { diff --git a/tools/RpsLoadProbe/TwpProxyHost.cs b/tools/RpsLoadProbe/TwpProxyHost.cs index 514101cef..6a3c762e2 100644 --- a/tools/RpsLoadProbe/TwpProxyHost.cs +++ b/tools/RpsLoadProbe/TwpProxyHost.cs @@ -817,6 +817,20 @@ private static ProxyServer CreateBaseProxy(bool enableHttp2, bool enableHttp3, proxy.EnableHttpsSvcbDnsDiscovery = false; // Saturation probe: raise floor so 4-vCPU Linux hosts are not stuck at OS defaults. proxy.ThreadPoolWorkerThread = Math.Max(Environment.ProcessorCount * 8, 64); + if (int.TryParse(Environment.GetEnvironmentVariable("TWP_RPS_THREADPOOL_MIN"), out var tpMin) + && tpMin >= 1) + proxy.ThreadPoolWorkerThread = tpMin; + + // Product profiles often use 30s header/request deadlines (linked CTS per request when >0). + // Probe default stays 0; set TWP_RPS_CLIENT_HEADER_TIMEOUT / TWP_RPS_REQUEST_TIMEOUT to + // re-measure product-default timeout tax without a code rebuild of Core. + if (int.TryParse(Environment.GetEnvironmentVariable("TWP_RPS_CLIENT_HEADER_TIMEOUT"), out var cht) + && cht >= 0) + proxy.ClientHeaderTimeoutSeconds = cht; + if (int.TryParse(Environment.GetEnvironmentVariable("TWP_RPS_REQUEST_TIMEOUT"), out var rt) + && rt >= 0) + proxy.RequestTimeoutSeconds = rt; + proxy.MaxCachedConnections = maxCachedConnections ?? 256; // Lossy H2 HOL: cap client streams so EnableMultipleHttp2Connections spreads across TCP // connections (NullOriginStream omits SETTINGS_MAX_CONCURRENT_STREAMS; Http2Helper appends this). diff --git a/wiki/Performance-Profiling.md b/wiki/Performance-Profiling.md index 62995508b..3169e14be 100644 --- a/wiki/Performance-Profiling.md +++ b/wiki/Performance-Profiling.md @@ -102,7 +102,7 @@ dotnet-gcdump collect -p Pre-PendingWork saturation was ~5–9× YARP on H2→H1 (~848 / ~626 MiB). Pre-syntheticStreams Block B was ~1.6× / ~1.9×. RPS still leads YARP on both arms. -**Decode-time `SessionEventArgs` skip (tried → reverted):** H3-class defer of `sessionFactory()` until after HPACK on NullOrigin bridges (lite GET/HEAD/DELETE/OPTIONS + END_STREAM → Request bag + Response-only emit). Cool paired A/B after dispatch-order fix: ÷YARP RPS ~**1.05×** (no regression) but Memory **flat** vs prior lite-wire residual (~211 MiB TWP vs ~127 MiB YARP on laptop ≈ **1.65×**, same band as CI **~1.6×** / local lab ~199 MiB). First dispatch shape that awaited prior stream before starting the lite task capped multiplex (~0.5× YARP) — fixed before the keep decision. **Reverted** per keep/revert (Memory not past noise). +**Decode-time `SessionEventArgs` skip (tried → reverted, **laptop-only**):** H3-class defer of `sessionFactory()` until after HPACK on NullOrigin bridges (lite GET/HEAD/DELETE/OPTIONS + END_STREAM → Request bag + Response-only emit). Cool paired A/B after dispatch-order fix: ÷YARP RPS ~**1.05×** (no regression) but Memory **flat** vs prior lite-wire residual (~211 MiB TWP vs ~127 MiB YARP on laptop ≈ **1.65×**, same band as CI **~1.6×** / local lab ~199 MiB). First dispatch shape that awaited prior stream before starting the lite task capped multiplex (~0.5× YARP) — fixed before the keep decision. **Reverted** per keep/revert (Memory not past noise). ### Windows Memory audit (2026-08-24) — synthetic-stream registry leak @@ -258,7 +258,7 @@ YARP inherits better *insurance* for slow consumers, protocol-edge bridging, and Remaining YARP-led cells in this pass (H2 POST at c=32, some 256 KiB bodies, lossy H1) were named as multiplex/shared-writer, copy/syscall/coalesce, or buffer-vs-delay — not "we lack pipelines." nginx still leads both on Linux H1; if there is a hard ceiling it is managed C# vs native, not TWP vs pipes. -The [architecture-sensitive](Performance-Local-Lab#architecture-sensitive) laptop table (and CI medians on [Performance](Performance#architecture-sensitive)) is `compare-arch`. **Duplex H2 remains YARP-led by design:** interception-off H2↔H2 already runs concurrent compressed frame relays (`CopyHttp2FrameAsync` both directions) — not the sequential H1 session. Published CI: Win ≈ **0.63×** (1,670 / 2,666), Linux ≈ **0.31×** (579 / 1,862) @ `1f2d0eee`. Low TWP CPU on that cell (Win ~23% / Linux ~13% vs YARP ~41% / ~52%) is the concurrent-copier insurance gap, not a missing H3-style `WhenAll(upload, ReceiveResponse)` cut. Early-response H2→H1 (TWP leads) and WebSocket dual-copy (TWP leads) do not imply H2↔H2 duplex will match YARP without adopting that forwarder model. +The [architecture-sensitive](Performance-Local-Lab#architecture-sensitive) laptop table (and CI medians on [Performance](Performance#architecture-sensitive)) is `compare-arch`. **Duplex H2 is TWP-led on published CI @ `062f4e72`:** Win sustain **2,236** vs YARP **25**, Linux **2,741** vs **199** (see [Performance § Architecture-sensitive](Performance#architecture-sensitive)). Older note @ `1f2d0eee` (Win ≈ **0.63×** / Linux ≈ **0.31×**) is **stale** — deferred DATA / compressed-relay fixes flipped the cell. Do **not** port Kestrel/`StreamCopier` for this row; keep concurrent compressed frame relays. Early-response H2→H1 and WebSocket dual-copy remain TWP strengths. ## Case studies: symptom → tool → root cause → fix @@ -307,40 +307,60 @@ The [architecture-sensitive](Performance-Local-Lab#architecture-sensitive) lapto | H2→H1 64 KiB ~0.87× YARP (tiny-GET already parity) | Cool pair + code compare vs Kestrel/YARP | Streamed path stripped Content-Length then empty END_STREAM DATA; pump wrote 8 KiB fills → 8 DATA frames + trailer; `HttpStream` double-buffered socket→8 KiB→dest; QueueDataFrame + 32 KiB flatten | Keep CL + END_STREAM on last DATA; `HttpStream` large-read bypass; in-place DATA framing (flatten **kept**); skip LimitedStream/Via on known-CL fast path; raise flatten budget to **288 KiB**. Cool 64 KiB ≈ **1.13×**; 256 KiB ≈ **0.89×**. Dropping flatten alone still ~0.65× | | H2 POST cool ~0.88× / 256 KiB H2→H1 ~0.90× | Shape c=1 vs c=32 + YARP `StreamCopier` (64 KiB) compare | c=1 TWP **leads** POST (~1.2×); c=32 loses when YARP healthy — multiplex tax (frame-loop copy + shared client writer). Extra body memcpy / coalesce experiments | **Kept:** ArrayPool request-body channel + `TryReserve` on `CopyFromAsync`. **Do not:** reserve >1 frame before enqueue; slice control frames into coalesced DATA; drop flatten | | H3 early-response Win CI ~0.76× (Linux already ~1.02×) | Cool A/B (`fix-early-tls/`) + origin/YARP duplex compare | `ForwardOverTcpAsync` wrote the full request body before `ReceiveResponse` while the probe origin overlaps after 8 KiB (YARP `StreamCopier` same). H3+MsQuic amplifies the serialization on Windows | Overlap streamed upload with `ReceiveResponse`; fold remaining upload into `StreamBodyWriter` via `Task.WhenAll`. Cool mean ≈ **1.21×** YARP. Do **not** re-land Http3Frame coalesce 256→16 KiB (hurt POST) | -| Duplex H2 Win CI ~0.63× / Linux ~0.31× (`compare-arch`) | Code path + CI medians [32688089789](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32688089789); short local cool noisy | H2 TLS↔H2 TLS overlapping 64 KiB POST. Interception-off reverse already concurrent-relays frames both ways (not H1 sequential; not the H3 pre-overlap `ForwardOverTcpAsync` bug). YARP `HttpForwarder`/`StreamCopier` + Kestrel still leads; TWP CPU underutilized vs YARP on the cell | **No product cut.** Document as irreducible YARP-led concurrent-copier cell; keep published CI ratios. Do **not** port Kestrel/`StreamCopier` for this row alone. | +| Duplex H2 was YARP-led @ `1f2d0eee` (~0.63×/0.31×); **superseded** @ `062f4e72` (TWP leads) | CI medians on [Performance](Performance#architecture-sensitive); older [32688089789](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32688089789) | Concurrent compressed-relay both ways already; deferred DATA / empty-body hardening recovered sustain | **No Kestrel/`StreamCopier` port.** Keep published TWP-led ratios; treat the `1f2d0eee` YARP-led note as historical only. | | H3→H1 64 KiB GET Win CI ~0.56× / Linux ~0.82× | Cool A/B (`h3-64k-rebaseline/`) + CI re-measure | Cool mean ≈ **1.13×** (3118/2688 & 3488/3181); stale CI was pre-`StreamBodyWriter` | No library change. Publishable [32611185635](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32611185635) @ `cd276c83`: Win ≈ **1.15×** (3,752 / 3,269), Linux ≈ **1.25×** (5,295 / 4,247). Next body gap: Win H1 TLS 256 KiB ≈ **0.85×** | | H1 TLS→H1 256 KiB Win CI ~0.85× | Cool A/B + shape (`h1-256k-cool/`) + YARP StreamCopier compare | Cool c=1 ≈ **0.83×** (per-request); `CopyBytesToStream` FillBuffer’d **8 KiB** forever — H2 large-read bypass never ran on H1 known-CL copy | Rent **64 KiB** + `ReadAsync` when parser window empty (`HttpStream.CopyBytesToStream`, `106e73b9`). Cool c=1 ≈ **1.16×**, c=32 ≈ **1.09×**. Publishable [32614286032](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32614286032): Win ≈ **1.12×** (2,617 / 2,347). | | H1 TLS new-conn Win CI ~0.84x (Linux TWP leads) | Cool A/B + Kestrel SocketConnectionListener / ConnectionDispatcher + bare ceiling | Nested SslStream + ClientHello peek + ECDSA + Task.Run + BeginAccept APM + per-accept linger/timeouts + RetryPolicy closures; **lite path forwarded `Connection: close` to origin** → no origin pool under NC | Peek/unwrap/RSA/no-keepalive; abortive SO_LINGER(0) on close; AcceptAsync; CTS pool; session-lite; WaitForData-before-SslStream; 8 KiB rent. AcceptIOQueue **no win**. Bare NC `Connection: close` response-skip fixed. **Strip hop-by-hop Connection before origin write** on H1 terminate lite. Publishable [32625349927](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32625349927) @ `13059143`: Win NC ≈ **1.01×**, Linux NC ≈ **1.01×** YARP (nginx 1st on Linux NC — TWP 2nd). | | H1→H3 100% err after session-lite (`03159694`) | Bisect `11e32f1c`→`03159694` + curl serve | H1 terminate lite gated only on `ForwardHost` + bodiless GET — **H1→H3/H2** with forced upstream H3/H2 took TCP H1 lite against QUIC/h2-only origins | Skip session-lite when connection-level `UpstreamHttpProtocol` is Http2/Http3 (`62e5efcd`). Soft coolish H1→H3 ≈ **1.25×**, h2c→H1 ≈ **1.05×**, H3→H1 ≈ **1.09×**. | | WarmTls H1→H3 + CachedServerAuthOptions gate broke H2 reverse | Local lossy H2 + ALPN fail (`No common application protocol`) | Expanding fixed-cert to any warmed `CachedServerAuthOptions` pinned **http/1.1-only ALPN** while H2 clients offer `h2` | Gate fixed-cert on `!EnableHttp2` only (H3 clients use QuicListener). H1→H3 host: `EnableHttp2=false` + WarmTls (`8ac422ee`). Cool H1→H3 ≈ **1.16×**; re-measure bridges/bodies/lossy @ tip. | | H2/H3→H1 64 KiB / lossy H2 still tax many DATA fills | Code compare vs H1 ≤64 KiB coalesce | H2→H1 / H3→H1 eager-buffer capped at **16 KiB** while lossy/bodies GET is **64 KiB** → stream via ~4× 16 KiB fills (shim delayMs per read) | Raise eager known-CL threshold to **64 KiB** (`Http2ToHttp11BridgeHandler` + `Http3OriginBridge`, `8ac422ee`). CI bodies Win H3→H1 64 KiB ≈ **1.09×** ([32631121563](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32631121563)). | -| H3→H1 tiny Win CI ~0.90×; cool order-noisy ~0.94–1.02× | Cool both-order dig + HEADERS+DATA coalesce experiment | `SendResponseAsync` does separate QuicStream writes for HEADERS then DATA + Flush | **Reverted** single-write HEADERS+DATA coalesce (`cool-h3-headers-data-coalesce-20260823/`): cool mean ≈ **0.96×** (no win). | +| H3→H1 tiny Win CI ~0.90×; cool order-noisy ~0.94–1.02× | Cool both-order dig + HEADERS+DATA coalesce experiment | `SendResponseAsync` does separate QuicStream writes for HEADERS then DATA + Flush | **Reverted** (**CI-proven** miss on related coalesce / latency bundle) single-write HEADERS+DATA coalesce (`cool-h3-headers-data-coalesce-20260823/`): cool mean ≈ **0.96×** (no win). | | H3→H1 c=1 leads ~1.25×; c=32 loses (~0.96×) — multiplex shape | Cool c=1 both orders + `dumpasync` @ c=32 (`dig-h3h1-dump2-20260823/`) + SampleProfiler | **32/32** parked on origin `ReceiveResponse`→`FillBuffer` (not writeLock/SoftCap). CPU: both TWP and YARP ~60% `LowLevelLifoSemaphore` wait — not a unique ThreadPool starve. QPACK/Normalize ≪1% exclusive | Next: cycle-time after status line (body buffer → QPACK → Quic write → pool Release) vs YARP `HttpForwarder`; optional AllocTick asymmetry. Soft re-measure @ `8e5c181b` (`cool-h3h1-shape-20260823/`): c=1 ≈ **1.60×**, c=32 ≈ **1.07×** — CI Win still ~0.89× @ prior tip; re-measure bridges in flight. | -| H3→H1 early origin Release / skip client Flush before CompleteWrites | Cool A/B (`cool-h3h1-early-release-20260823/`, `cool-h3h1-skip-flush-20260823/`) | Hypothesis: free H1 socket sooner / avoid MsQuic Flush tax on fast path | **No cool win** (~0.95–0.98×). Reverted both. | +| H3→H1 early origin Release / skip client Flush before CompleteWrites | Cool A/B (`cool-h3h1-early-release-20260823/`, `cool-h3h1-skip-flush-20260823/`) | Hypothesis: free H1 socket sooner / avoid MsQuic Flush tax on fast path | **No cool win** (~0.95–0.98×). Reverted (**laptop-only** evidence). | | H1→H3 / h2c→H3 Win CI closed @ `8789d6de` | CI bridges [32636039240](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32636039240) | Eager ≤64 KiB H3 origin body + FIN drain before Dispose | Win H1→H3 ≈ **1.04×**, h2c→H3 ≈ **1.05×**. Still open: Win h2c→H1 ≈ **0.96×**, H3→H1 ≈ **0.89×**; lossy H2 16 vs 17. | -| H3→H1 ForwardHost Host rewrite (match YARP HttpForwarder) | Cool A/B (`cool-h3h1-host-rewrite-20260823/`) | Hypothesis: :authority `localhost:` on H1 Host wire vs origin `127.0.0.1:` | **No cool win** (~0.94–0.99×). Reverted. | -| h2c→H1 early origin Release before EmitSynthetic | Cool lead ~1.03×; CI re-measure [32638840153](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32638840153) @ `253e8716` | Hypothesis: free H1 socket before H2 frame emit | **CI miss**: Win h2c→H1 still ~**0.95×**; **Lin h2c→H1 regressed** ~1.03×→**0.96×**. Reverted. | -| h2c→H1 ForwardHost Host rewrite | Cool A/B (`cool-h2ch1-fwdhost2-20260823/`) | Same Host rewrite on H2→H1 bridge | **No clear cool win** (YT ~0.97×). Reverted. | +| H3→H1 ForwardHost Host rewrite (match YARP HttpForwarder) | Cool A/B (`cool-h3h1-host-rewrite-20260823/`) | Hypothesis: :authority `localhost:` on H1 Host wire vs origin `127.0.0.1:` | **No cool win** (~0.94–0.99×). Reverted (**laptop-only**). | +| h2c→H1 early origin Release before EmitSynthetic | Cool lead ~1.03×; CI re-measure [32638840153](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32638840153) @ `253e8716` | Hypothesis: free H1 socket before H2 frame emit | **CI-proven miss**: Win h2c→H1 still ~**0.95×**; **Lin h2c→H1 regressed** ~1.03×→**0.96×**. Reverted. | +| h2c→H1 ForwardHost Host rewrite | Cool A/B (`cool-h2ch1-fwdhost2-20260823/`) | Same Host rewrite on H2→H1 bridge | **No clear cool win** (YT ~0.97×). Reverted (**laptop-only**). | | Lossy H1 Win re-measure @ `253e8716` ≈ **1.00×** (662/662) | CI lossy [32638842839](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32638842839) | Prior ~0.99× noise | Closed **≥1.00×** (nginx 1st 634 — TWP 2nd). Win lossy H2 still 16 vs 17. | | Lossy H2 HOL: NullOriginStream lacked SETTINGS_MAX_CONCURRENT_STREAMS | Cool + CI lossy [32643126466](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32643126466); bridges tax @ same tip | Hardcoding MaxStreams=8 on NullOriginStream closed lossy (Win **3.47×**) but tax'd Win tiny-GET h2c→H1 / H2→H1 (~0.90×) via extra TCP handshakes at c=64. | **Landed** lossy-only: probe sets `ResourceLimits.MaxConcurrentStreamsPerConnection=8` when `IsLossy` (`WithMaxConcurrentStreams…`); Http2Helper appends SETTINGS. Tiny-GET keeps default 256. Cool lossy **29/15**; cool h2c ≈ **1.04×**. Re-measure lossy+bridges. Dispose harden on `TcpClientConnection` kept. | | Lossy H1 Win cool ~0.86× (p50 +16 ms vs YARP) | Cool A/B + userspace delay shim analysis | Fast-path `WriteResponse` then `CopyBody` emitted a **header-only TLS record** before body; shim pays `delayMs` per read → ~3 extra 5 ms trips | Materialize known-CL ≤64 KiB on fast path + coalesce headers+body (`bc768069`). Cool ≈ **1.00×**; CI [32620889168](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32620889168): Win **663/664**, Linux **1199/1196**. | | GHA `compare-post`/`compare-arch` failed; laptop H3 POST/slow passed | Failed run logs ([32602145518](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32602145518), [32602146550](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32602146550)) | (1) Dual-listen: TCP ephemeral then QUIC UDP same port → Windows `WSAEADDRINUSE` when UDP busy/excluded. (2) Incomplete `StreamBodyWriter` + `DataAvailable==0` pooled origin sockets with unread CL → next request `H3_INTERNAL_ERROR` (HeadersRead slow-consumer + warmup cancel amplifies on 4 vCPU) | Retry ephemeral TCP+QUIC bind in `ProxyServer.Start`/`AddEndPoint`; always close origin on incomplete StreamBodyWriter; YARP/nginx dual-stack free-port pick | -| H3→H1 latency bundle (skip drain / skip Flush / HEADERS+DATA coalesce) | Cool absolute win (`cool-h3h1-latency-bundle-20260823/`) + CI bridges [32652931261](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32652931261) @ `3f948409` | Cool c=64 TWP ~25k (tip ~20–23k); laptop YARP ~30k → cool TY ~0.85×. Trace @ c=64: p50 gap not exclusive CPU. | **CI miss**: Win H3→H1 **0.92× → ~0.87×** (13,391 / 15,444). Lin H3→H1 still leads (~1.11×). Lossy Lin H3 improved ~0.76×→~**0.89×** (278/314) but still <1.00×. **Reverted** (`2bf18d75`). | +| H3→H1 latency bundle (skip drain / skip Flush / HEADERS+DATA coalesce) | Cool absolute win (`cool-h3h1-latency-bundle-20260823/`) + CI bridges [32652931261](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32652931261) @ `3f948409` | Cool c=64 TWP ~25k (tip ~20–23k); laptop YARP ~30k → cool TY ~0.85×. Trace @ c=64: p50 gap not exclusive CPU. | **CI-proven miss**: Win H3→H1 **0.92× → ~0.87×** (13,391 / 15,444). Lin H3→H1 still leads (~1.11×). Lossy Lin H3 improved ~0.76×→~**0.89×** (278/314) but still <1.00×. **Reverted** (`2bf18d75`). | | H2→H1 Memory ~5–9× YARP at RPS parity | Saturation RSS sampler + bag lifetime analysis | `ConcurrentBag` PendingSynthetics/Finalizations retained completed Tasks (session closures) for client H2 conn life; full SessionEventArgs per stream on IsFastPath | **`Http2PendingWork`** remove-on-complete; H2→H1 warm `TryRentPooled` + `HeaderBuilder` wire (H3→H1 analogue). Re-measure Block B Memory. Do not shrink windows / single-conn. | | H3→H1 Win ~0.993× residual after one-pass QPACK | Cool A/B + gen0 on post-status path | Per-response `MemoryStream` QPACK builder + Latin-1 string round-trip + `new byte[]` tiny body | ThreadStatic **`ResponseBlockBuilder` rent**; span `AddHeader`; BufferPool body when `Available` covers CL. Bridges CI @ `0ff3673c` / [32685354747](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32685354747): Win **1.12×** (27,046 / 24,085); Linux **1.09×**. | | H3→H3 Win CI ~0.85× YARP; MITM Full÷Reverse ≪0.80 on H2/H3/H1 arms ([32960766249](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32960766249)) | Cool paired A/B (`h3h3-dig/`) + `compare-product` MITM arms | H3→H3: per-frame QUIC I/O. MITM Full: probe-only fast path coupled product code to RPS harness header name; H2 `!wouldInjectVia` bail; H3 Via gate blocked preencoded relay with default pseudonym | **Landed v1** @ `df172718`: `MitmCompressedRelayHelper` append-only (max 4 unique headers); H2 zero-copy append suffix; all MITM arms ≥ **0.70×** on GHA median ([33041445371](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33041445371) ×3). **Landed v2** @ `acfb27e1` ([#981](https://github.com/justcoding121/titanium-web-proxy/pull/981)): `MitmStaticRebuildHelper` drop-only static rebuild (max 4 unique drops) + non-unique trailing append (second `Set-Cookie`); modify value / body still full re-encode. Three MITM tiers: **Lite** (unchanged relay), **Append/Strip-lite** (append or drop-only on static GET), **Full session** (modify/body/multi-edit). v2 GHA medians @ `acfb27e1` — Win [33087085235](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33087085235)/[88466](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33087088466)/[91622](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33087091622), Lin [88466](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33087088466)/[91622](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33087091622)/[33105885748](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33105885748); all MITM arms ≥ **0.70×**; one Lin arm (H1 TLS→H2 plain Full÷Reverse) −6% vs v1 (0.931 vs 0.991), within harness noise. | -| H3→H1 sticky ConcurrentBag TCP pool (bypass factory poolLock) | Cool tip-vs-sticky both orders @ c=32 (`cool-sticky-vs-tip-20260823/`) | Hypothesis: CI 4 vCPU multiplex tax on poolLock/queue | **Cool flat** (~1.07× both). Reverted. | -| H3→H1 Request/Response ConcurrentBag + QPACK ArrayPool EncodeResponse | Cool same-thermal tip-vs-pool @ c=32 (`cool-pool-qpack-20260823/`) | Hypothesis: HeaderCollection graph + QPACK `byte[]` gen0 under 32 wakeups | **Cool flat** (tip ~1.08×, pool ~1.06×). TWP absolute sometimes +high single digits; ratio not ≥+2%. Reverted. | -| H3→H1 FIN-drain overlap with origin TCP + message pool | Cool both orders (`cool-pool-overlap-20260823/`) | Hypothesis: hide Quic FIN read behind origin FillBuffer (do not skip drain) | **Cool miss** (order-noisy mean ≪ tip). Reverted. | +| H3→H1 sticky ConcurrentBag TCP pool (bypass factory poolLock) | Cool tip-vs-sticky both orders @ c=32 (`cool-sticky-vs-tip-20260823/`) | Hypothesis: CI 4 vCPU multiplex tax on poolLock/queue | **Cool flat** (~1.07× both). Reverted (**laptop-only**; under-powered 1–2 pairs). | +| H3→H1 Request/Response ConcurrentBag + QPACK ArrayPool EncodeResponse | Cool same-thermal tip-vs-pool @ c=32 (`cool-pool-qpack-20260823/`) | Hypothesis: HeaderCollection graph + QPACK `byte[]` gen0 under 32 wakeups | **Cool flat** (tip ~1.08×, pool ~1.06×). TWP absolute sometimes +high single digits; ratio not ≥+2%. Reverted (**laptop-only**). | +| H3→H1 FIN-drain overlap with origin TCP + message pool | Cool both orders (`cool-pool-overlap-20260823/`) | Hypothesis: hide Quic FIN read behind origin FillBuffer (do not skip drain) | **Cool miss** (order-noisy mean ≪ tip). Reverted (**laptop-only**). | | H3→H1 one-pass H1 headers → QPACK (no Response/HeaderCollection) | Cool tip-vs-onepass YT @ c=32 (`cool-onepass-v2-20260823/`) + H3 integ | Post-status HeaderCollection graph + EncodeResponse under 32 wakeups (CI 4 vCPU gen0) | **Cool YT win**: one-pass TWP÷YARP ≈ **1.24×** (20,893/16,904) vs tip ≈ **1.18×** (19,807/16,843); TWP absolute +~5%. TY polluted by soft YARP. Unit+H3 integ green. | +### RPS improvement pass (2026-10-01) + +Phase 0–2 on tip after `062f4e72` (H2 correctness ~+1.5k LOC). Mac not profiled. + +| Item | Outcome | +|---|---| +| Re-measure HEAD (`b0fd4e62`) vs `062f4e72` | Local cool pairs + GHA Win [36844013455](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36844013455) / Linux [36844018807](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36844018807). GHA H1 reverse Win **25.1k** / Lin **35.4k**; H2 reverse Win **85.1k** / Lin **61.1k** — no hard cliff vs published tables. | +| Lazy non-unique `HeaderCollection` maps | **Kept** (null-tolerant enumerator/COW). | +| H3 session CTS pool + static cold-open factory | **Kept** (connection-token link retained). | +| H1 terminate-lite shell reuse | **Kept** as await-safe `ConcurrentBag` (ThreadStatic raced across awaits → `HTTP/0.0 0`). DataAvailable close guard unchanged. | +| H2 origin eager-buffer 8→64 KiB | **Kept** (match H3→H1); RSS trade-off noted for Linux CI A/B. | +| `RequestHeaderSet` COW / MutationCount | **Kept** (lite/recycle path survives pure set/append). | +| Skip `HttpInterceptionContext` when no predicate; pooled header-fragment buffer | Predicate skip already in place. **Fragment pool tried → reverted** in review: captured `CapturedCompressedHeaders` is shared with the async relay and stream-state recycle, so return-on-clear double-returned the array (shared-buffer corruption risk). Needs explicit single-owner semantics before a retry. Do **not** pool `SessionEventArgs`. | +| Env knobs (Win H1 TLS tiny GET) | `twp-ab/env-knobs2`: default ~22k; `DOTNET_gcConcurrent=0` **13.7k** (hurt); `TWP_RPS_THREADPOOL_MIN=32` ~24k / `128` **15.4k** (hurt); `DOTNET_GCHighMemPercent=90` ~21k. No public gen0-size env on .NET 10. `SOCKETS_INLINE_COMPLETIONS` Linux-only — Docker engine unavailable on the Windows laptop this pass; leave for a Linux GHA / Mac-deferred follow-up (no code change). | +| Product-default timeouts (30s) | `timeouts30` ~**30.0k** RPS vs default ~22k on same laptop session — **no >3% tax**; **no DeadlineRegistry change**. | +| Duplex H2 wiki note | Corrected: published CI @ `062f4e72` is **TWP-led** (older `1f2d0eee` YARP-led note is stale). | + + ## Guardrails while optimizing - **Real proxy improvements only — do not game the RPS harness.** YARP (and nginx) are the *yardstick*, not the product. Land changes that reduce real work on the hot path for general reverse-proxy / keep-alive traffic: fewer allocations, fewer syscalls, less protocol waste, less interception tax when unused. Do **not** land knobs, special cases, or architecture copies whose only purpose is to inflate TWP÷YARP on the tiny-GET probe. Use the probe to find where time burns; revert experiments that do not help the proxy itself even if a noisy pair looks green. - **Full unit + integration suites after every change.** Several perf changes introduced real regressions (the scheme mismatch, the DATA race, HTTP-version and Content-Length bugs on the bridges); the suites and the benchmark's own error SLO caught all of them the same day. - **A standalone external repro** (`tools/H2ExternalRepro`) validates against real internet sites, which surface flow-control and settings behavior loopback benchmarks never exercise. - **Wiki numbers carry their run IDs** and an explanation of *why* each number moved, so a future regression has a baseline with provenance. +- **Laptop “cool flat → reverted” rows are often under-powered evidence** (1–2 pairs on an 8-thread box). Prefer bytes/op / gen0 for allocation trims; require ≥5 alternating pairs or GHA Win+Linux for ±3% RPS claims. Tag each case-study revert as **CI-proven** (GHA miss / regression) vs **laptop-only** (cool flat within noise). +- **HEAD vs published tables:** wiki product tables cite `062f4e72`. Local A/B + Phase-1 tip after `b0fd4e62` (2026-10-01, `C:\Work\Repositories\twp-ab`); GHA compare-spot Win+Linux [36844013455](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36844013455) / [36844018807](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36844018807). Mac not re-measured in that pass. ## Checklist diff --git a/wiki/Performance.md b/wiki/Performance.md index 7390d4216..b0ec2b1ca 100644 --- a/wiki/Performance.md +++ b/wiki/Performance.md @@ -132,7 +132,7 @@ Calibration for the shared 4 vCPU loopback shape: how close client + origin are | yarp-reverse-http1 | dotnet-httpclient | **41,100**
(116 MiB / 48.6% CPU) | **40.7%** | | twp-reverse-http1 | dotnet-httpclient | **48,351**
(84 MiB / 49.3% CPU) | **47.9%** | -Reverse peers are about **50–48%** of the origin-direct HttpClient peak on this runner class (Win TWP **50.1%**, Lin TWP **48.3%**). Prefer the **%** column over absolute RPS across runs. Bare and origin-direct are controls (not medal peers). +Reverse peers are about **51–48%** of the origin-direct HttpClient peak on this runner class (Win TWP **51.2%**, Lin TWP **47.9%**). Prefer the **%** column over absolute RPS across runs. Bare and origin-direct are controls (not medal peers). #### Block B — H2 TLS→H1 From 61702c006a2ee76b06f111ce1dd63d6306542810 Mon Sep 17 00:00:00 2001 From: github-actions <41898282+github-actions[bot]@users.noreply.github.com> Date: Thu, 1 Oct 2026 11:08:03 +0000 Subject: [PATCH 13/17] Update documentation --- ...roxy.Http.HeaderCollection.Enumerator.html | 10 +++--- ...anium.Web.Proxy.Http.HeaderCollection.html | 34 +++++++++---------- 2 files changed, 22 insertions(+), 22 deletions(-) diff --git a/docs/api/Titanium.Web.Proxy.Http.HeaderCollection.Enumerator.html b/docs/api/Titanium.Web.Proxy.Http.HeaderCollection.Enumerator.html index 144388eb5..ab4151416 100644 --- a/docs/api/Titanium.Web.Proxy.Http.HeaderCollection.Enumerator.html +++ b/docs/api/Titanium.Web.Proxy.Http.HeaderCollection.Enumerator.html @@ -128,7 +128,7 @@

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    From 39a903f0395ec6867a1b49b9528d71f92642ba90 Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 19:05:19 +0530 Subject: [PATCH 14/17] ci(rps): run macOS RPS on Apple Silicon (macos-15) instead of macos-15-intel Most Macs today are Apple Silicon, and RPS tables compare products within an OS, not OSes against each other. Switch the RPS matrix, required-check name, runner shape assertions (arm64, >=3 CPU, >=6 GiB), bombardier/Envoy darwin-arm64 assets, cache key, scripts and docs. Existing Mac tables stay labeled as Intel until re-measured. --- .github/branch-ruleset-beta-stable.json | 2 +- .github/workflows/rps-saturation.yml | 76 ++++++++++--------- tools/RpsLoadProbe/PERF-GATES.md | 4 +- tools/RpsLoadProbe/README.md | 6 +- tools/RpsLoadProbe/apply-wiki-paste.ps1 | 2 +- .../paste-compare-product-wiki.ps1 | 4 +- tools/RpsLoadProbe/paste-heavier-wiki.py | 10 ++- tools/RpsLoadProbe/render-practical-charts.py | 2 +- .../validate-all-compare-product-arms.ps1 | 2 +- wiki/Performance.md | 20 ++--- 10 files changed, 68 insertions(+), 60 deletions(-) diff --git a/.github/branch-ruleset-beta-stable.json b/.github/branch-ruleset-beta-stable.json index 43983c4f9..8733f6023 100644 --- a/.github/branch-ruleset-beta-stable.json +++ b/.github/branch-ruleset-beta-stable.json @@ -35,7 +35,7 @@ { "context": ".NET / cli-e2e (macos-latest)" }, { "context": "RPS saturation / rps (ubuntu-latest)" }, { "context": "RPS saturation / rps (windows-latest)" }, - { "context": "RPS saturation / rps (macos-15-intel)" } + { "context": "RPS saturation / rps (macos-15)" } ] } }, diff --git a/.github/workflows/rps-saturation.yml b/.github/workflows/rps-saturation.yml index 3af2c05e5..b97ee651f 100644 --- a/.github/workflows/rps-saturation.yml +++ b/.github/workflows/rps-saturation.yml @@ -5,9 +5,10 @@ # Prefer --repeats >= 3 for publishable numbers (runner noise). Linux nginx # is the authoritative nginx baseline; nginx/Windows is same-OS only. # -# Matrix uses the 4-core public-repo runner class: ubuntu-latest / windows-latest -# (4 vCPU / 16 GiB) and macos-15-intel (4-core / 14 GiB). Do not use macos-latest -# (3-core M1 / 7 GiB) for publishable numbers — wrong size and architecture. +# Matrix uses public-repo GitHub-hosted runners: ubuntu-latest / windows-latest +# (4 vCPU / 16 GiB) and macos-15 (Apple Silicon M1, 3-core / 7 GiB). macOS is Apple +# Silicon because that is what Mac users run today; we compare products within an OS, +# not OS against OS. Pin macos-15 (not macos-latest) so the image does not change under us. # Do not mix larger or slim runners unless every OS gets the same size class. name: RPS saturation @@ -184,7 +185,7 @@ on: required: true default: '3' runner_os: - description: 'OS matrix filter (all = Win+Linux+Mac Intel)' + description: 'OS matrix filter (all = Win+Linux+Mac Apple Silicon)' required: true default: all type: choice @@ -192,7 +193,7 @@ on: - all - ubuntu-latest - windows-latest - - macos-15-intel + - macos-15 arm_shard: description: 'Comparison-group partition (all = no split; i/n = exclusive 1-based shard of wiki rows / Client×Origin wires, not individual arms)' required: true @@ -221,8 +222,8 @@ jobs: strategy: fail-fast: false matrix: - # workflow_dispatch runner_os filters to one OS; otherwise Win+Linux+Mac Intel. - os: ${{ fromJSON(inputs.runner_os == 'macos-15-intel' && '["macos-15-intel"]' || inputs.runner_os == 'ubuntu-latest' && '["ubuntu-latest"]' || inputs.runner_os == 'windows-latest' && '["windows-latest"]' || '["ubuntu-latest","windows-latest","macos-15-intel"]') }} + # workflow_dispatch runner_os filters to one OS; otherwise Win+Linux+Mac Apple Silicon. + os: ${{ fromJSON(inputs.runner_os == 'macos-15' && '["macos-15"]' || inputs.runner_os == 'ubuntu-latest' && '["ubuntu-latest"]' || inputs.runner_os == 'windows-latest' && '["windows-latest"]' || '["ubuntu-latest","windows-latest","macos-15"]') }} runs-on: ${{ matrix.os }} # Intentionally no jobs.*.container — saturation RPS on a container network measures the wrong thing. # GitHub-hosted runners hard-cap at 360 minutes — do not set timeout above that. @@ -267,20 +268,24 @@ jobs: echo "sw_vers:" sw_vers ncpu=$(sysctl -n hw.ncpu) - # hw.memsize is bytes; assert >= 4 CPUs and >= 12 GiB (macos-15-intel is 4 / 14). + # hw.memsize is bytes; assert arm64, >= 3 CPUs and >= 6 GiB (macos-15 Apple Silicon is 3 / 7). mem_bytes=$(sysctl -n hw.memsize) mem_gib=$(awk -v b="$mem_bytes" 'BEGIN { printf "%.1f", b / (1024*1024*1024) }') echo "ncpu=$ncpu" echo "RAM_GiB=$mem_gib" sysctl -n machdep.cpu.brand_string || true - if [ "$ncpu" -lt 4 ]; then - echo "Expected >=4 CPUs on macos-15-intel; got $ncpu (do not use macos-latest for publishable RPS)." >&2 + if [ "$ncpu" -lt 3 ]; then + echo "Expected >=3 CPUs on macos-15; got $ncpu." >&2 exit 1 fi - # 12 GiB floor leaves headroom under the documented 14 GiB Intel runner. - min_bytes=$((12 * 1024 * 1024 * 1024)) + if [ "$(uname -m)" != "arm64" ]; then + echo "Expected Apple Silicon (arm64) on macos-15; got $(uname -m)." >&2 + exit 1 + fi + # 6 GiB floor leaves headroom under the documented 7 GiB Apple Silicon runner. + min_bytes=$((6 * 1024 * 1024 * 1024)) if [ "$mem_bytes" -lt "$min_bytes" ]; then - echo "Expected >=12 GiB RAM on macos-15-intel; got ${mem_gib} GiB." >&2 + echo "Expected >=6 GiB RAM on macos-15; got ${mem_gib} GiB." >&2 exit 1 fi @@ -342,8 +347,8 @@ jobs: & (Join-Path $nginxDir 'nginx.exe') -v # Homebrew nginx bottles include --with-http_v3_module (OpenSSL 3). Fail hard if missing. - # macos-15-intel: Homebrew no longer mass-bottles Intel; avoid brew update/upgrade of openssl - # (already-installed bottle works; upgrading hits "no bottle available"). + # macos-15 (Apple Silicon): Homebrew bottles arm64; still skip brew update/upgrade of + # openssl (the already-installed bottle works and keeps the job fast and reproducible). - name: Install nginx (HTTP/3-capable, macOS) if: runner.os == 'macOS' env: @@ -351,12 +356,12 @@ jobs: HOMEBREW_NO_INSTALL_UPGRADE: '1' run: | set -euo pipefail - # Use preinstalled openssl@3 / pcre2 when present; do not upgrade (Intel bottles missing). + # Use preinstalled openssl@3 / pcre2 when present; do not upgrade. brew list --versions openssl@3 || brew install openssl@3 brew list --versions pcre2 || brew install pcre2 if ! brew list --versions nginx >/dev/null 2>&1; then if ! brew install nginx; then - echo "brew install nginx failed (likely missing Intel bottle); building from source…" >&2 + echo "brew install nginx failed (likely missing bottle); building from source…" >&2 brew install --build-from-source nginx fi fi @@ -478,7 +483,7 @@ jobs: uses: actions/cache@v6 with: path: ${{ runner.temp }}/haproxy-quic - key: haproxy-3.2.23-quic-osx-x64 + key: haproxy-3.2.23-quic-osx-arm64 - name: Install HAProxy with QUIC (macOS) if: runner.os == 'macOS' @@ -569,9 +574,9 @@ jobs: echo "HAProxy USE_QUIC present" # Envoy Apache 2.0 — Linux static binary from GitHub releases; macOS via Homebrew - # (HTTP/3 compiled in). Official GitHub assets are Linux-only; Intel Mac has no - # current Homebrew bottle, so fall back to the pinned Kuma/CNCF darwin-amd64 build - # of the same 1.36.7 tag (do not bazel-build Envoy on the runner). + # (HTTP/3 compiled in). Official GitHub assets are Linux-only; if Homebrew has no + # arm64 bottle, fall back to the pinned Kuma/CNCF darwin-arm64 build of the same + # 1.36.7 tag (do not bazel-build Envoy on the runner). # Windows support discontinued — skip (cells are Not possible). - name: Install Envoy (Linux) if: runner.os == 'Linux' @@ -602,8 +607,7 @@ jobs: brew services stop envoy 2>/dev/null || true pkill -x envoy 2>/dev/null || true - # Pour a bottle only. Intel Homebrew has no envoy bottle; bazel-from-source - # would burn the job timeout. ARM bottles (macos-latest) still pour here. + # Pour a bottle only; bazel-from-source would burn the job timeout. brew_has_envoy_bottle() { python3 -c ' import json, platform, subprocess, sys @@ -652,14 +656,14 @@ jobs: fi if ! command -v envoy >/dev/null 2>&1; then - echo "Downloading pinned darwin-amd64 Envoy ${ENVOY_VERSION} (Kuma/CNCF builds; official GitHub assets are Linux-only)…" >&2 + echo "Downloading pinned darwin-arm64 Envoy ${ENVOY_VERSION} (Kuma/CNCF builds; official GitHub assets are Linux-only)…" >&2 dest="${RUNNER_TEMP}/envoy" mkdir -p "$dest" - tarball="${RUNNER_TEMP}/envoy-darwin-amd64.tar.gz" + tarball="${RUNNER_TEMP}/envoy-darwin-arm64.tar.gz" if ! curl --fail --silent --show-error --location --proto '=https' --tlsv1.2 \ - "https://github.com/kumahq/envoy-builds/releases/download/v${ENVOY_VERSION}/envoy-darwin-amd64-v${ENVOY_VERSION}.tar.gz" \ + "https://github.com/kumahq/envoy-builds/releases/download/v${ENVOY_VERSION}/envoy-darwin-arm64-v${ENVOY_VERSION}.tar.gz" \ -o "$tarball"; then - echo "darwin-amd64 Envoy download failed — Envoy arms will be skipped." >&2 + echo "darwin-arm64 Envoy download failed — Envoy arms will be skipped." >&2 exit 0 fi tar -xzf "$tarball" -C "$dest" @@ -670,7 +674,7 @@ jobs: bin="$(find "$dest" -type f -name envoy | awk 'NR==1 { print; exit }')" fi if [ -z "${bin}" ] || [ ! -f "$bin" ]; then - echo "darwin-amd64 Envoy tarball had no envoy binary — Envoy arms will be skipped." >&2 + echo "darwin-arm64 Envoy tarball had no envoy binary — Envoy arms will be skipped." >&2 exit 0 fi chmod +x "$bin" @@ -683,7 +687,7 @@ jobs: exit 0 fi envoy --version - echo "Envoy present (Homebrew or pinned darwin-amd64); H3 arms run when QuicListener is supported." + echo "Envoy present (Homebrew or pinned darwin-arm64); H3 arms run when QuicListener is supported." # .NET System.Net.Quic on Linux requires native libmsquic (shipped in-box on Windows). - name: Install libmsquic (HTTP/3) @@ -711,8 +715,8 @@ jobs: Write-Host "QuicListener.IsSupported=$([System.Net.Quic.QuicListener]::IsSupported)" # macOS: System.Net.Quic needs Homebrew libmsquic (and OpenSSL) on DYLD_* path. - # Prefer brew; fall back to Microsoft osx-x64 release dylibs if brew is insufficient. - - name: Install MsQuic (HTTP/3, macOS Intel) + # Prefer brew; fall back to Microsoft osx-arm64 release dylibs if brew is insufficient. + - name: Install MsQuic (HTTP/3, macOS) if: runner.os == 'macOS' shell: pwsh env: @@ -720,7 +724,7 @@ jobs: HOMEBREW_NO_INSTALL_UPGRADE: '1' run: | $ErrorActionPreference = 'Stop' - # Do not upgrade openssl@3 on Intel — new formula often has no bottle. + # Do not upgrade openssl@3; the preinstalled bottle is enough. brew install openssl@3 libmsquic $prefix = (& brew --prefix).Trim() $msquicLib = Join-Path $prefix 'opt/libmsquic/lib' @@ -745,12 +749,12 @@ jobs: } if (-not (Test-QuicSupported)) { - Write-Host 'QuicListener.IsSupported still false after brew; trying Microsoft osx-x64 libmsquic drop…' + Write-Host 'QuicListener.IsSupported still false after brew; trying Microsoft osx-arm64 libmsquic drop…' $dest = Join-Path $env:RUNNER_TEMP 'msquic-osx' New-Item -ItemType Directory -Path $dest -Force | Out-Null # Pin a known MsQuic release asset layout; adjust tag if the download 404s. $tag = 'v2.4.7' - $url = "https://github.com/microsoft/msquic/releases/download/$tag/msquic_osx-x64_$tag.zip" + $url = "https://github.com/microsoft/msquic/releases/download/$tag/msquic_osx-arm64_$tag.zip" $zip = Join-Path $env:RUNNER_TEMP 'msquic-osx.zip' try { & curl --fail --silent --show-error --location --proto '=https' --tlsv1.2 $url -o $zip @@ -807,11 +811,11 @@ jobs: if: runner.os == 'macOS' run: | set -euo pipefail - # macos-15-intel is x86_64 — use darwin amd64 binary. + # macos-15 is arm64 - use the darwin arm64 binary. dir="${RUNNER_TEMP}/bombardier" mkdir -p "$dir" curl --fail --silent --show-error --location --proto '=https' --tlsv1.2 \ - "https://github.com/codesenberg/bombardier/releases/download/v1.2.6/bombardier-darwin-amd64" \ + "https://github.com/codesenberg/bombardier/releases/download/v1.2.6/bombardier-darwin-arm64" \ -o "$dir/bombardier" chmod +x "$dir/bombardier" echo "$dir" >> "$GITHUB_PATH" diff --git a/tools/RpsLoadProbe/PERF-GATES.md b/tools/RpsLoadProbe/PERF-GATES.md index d2f5c06a4..2336733ec 100644 --- a/tools/RpsLoadProbe/PERF-GATES.md +++ b/tools/RpsLoadProbe/PERF-GATES.md @@ -73,7 +73,7 @@ Terminate smoke (peak RPS; routes unset): TWP H1 TLS win **34273**, ubuntu **241 - **Heavier / gRPC YARP gates (current):** [`validate-heavier-yarp-gates.ps1`](validate-heavier-yarp-gates.ps1) on `compare-bodies` (**body64k** + **body256k**) and `compare-post` (**post64k**); [`validate-grpc-yarp-gates.ps1`](validate-grpc-yarp-gates.ps1) on `compare-grpc` (H2 TLS→H2 TLS + H2 TLS→h2c). Same floor **TWP ÷ YARP ≥ 0.60** @ c=64 median when YARP SLO-passes; shard-safe SKIP when either peer has no c=64 SLO. **`compare-lossy` / `compare-arch` hard bar:** [`validate-lossy-arch-gates.ps1`](validate-lossy-arch-gates.ps1) — every TWP arm **> 0**; when YARP sustain/peak **> 0**, TWP÷YARP **≥ 0.50** (SKIP ratio if YARP=0). Workflow runs [`smoke-validate-gates.ps1`](smoke-validate-gates.ps1) **before** the saturation ramp so gate-script crashes fail in seconds. - **YARP floor 0.75→0.60 (2026-09-27):** gated suite `wiki-rps-742204d8` Mac-only gate fails — product H3→h2c **0.618** / H3→H2 **0.617** (Win+Linux green). Above **0.50**; Intel-Mac H3 peer noise, not a Core cliff. Locked ≥ **0.60**. Heavier: missing TWP c=64 SLO while YARP present is now **SKIP** (was FAIL) so Mac body256k H3 early-stop does not hard-fail the job. - **Lossy H3 UDP shim (2026-09-27):** Wiki `compare-lossy` H3→H1 was mutual sustain 0 — harness, not TWP. Root causes: (1) relay `ReceiveAsync` armed after the first client forward so MsQuic Retry/Initial could land on an empty socket; (2) userspace per-datagram `delayMs` through the NAT breaks MsQuic (handshake/1-RTT short-header timeouts, and multiplexed keep-alive collapse). Fix: arm backend receive before first forward; apply **loss% only** on UDP (TCP shim still does delay+stall). Local Win: H3→H1 d5l1 ladder c=8..32 TWP+YARP sustain >0. -- **Mac TLS new-connection p99 (2026-09-27):** `compare-tls-cost` macOS TWP/YARP `*-nc-tiny` sustain **0** (p99 > 200 ms even at c=8) while nginx/HAProxy/Envoy still SLO-pass. Causes: (1) concurrent `ProcessResourceSampler` during handshake measure — defer sample until after; (2) Darwin .NET SslStream new-conn baseline (~70 RPS, c=8 p99 often 200–400 ms for **both** TWP and YARP). Handshake p99 SLO stays **200 ms** on Win/Linux; **500 ms** on macOS only (same for all peers). Client handler sets `CertificateRevocationCheckMode=NoCheck`. Surgical re-run: `arm_contains=nc-tiny` + `runner_os=macos-15-intel`. +- **Mac TLS new-connection p99 (2026-09-27):** `compare-tls-cost` macOS TWP/YARP `*-nc-tiny` sustain **0** (p99 > 200 ms even at c=8) while nginx/HAProxy/Envoy still SLO-pass. Causes: (1) concurrent `ProcessResourceSampler` during handshake measure — defer sample until after; (2) Darwin .NET SslStream new-conn baseline (~70 RPS, c=8 p99 often 200–400 ms for **both** TWP and YARP). Handshake p99 SLO stays **200 ms** on Win/Linux; **500 ms** on macOS only (same for all peers). Client handler sets `CertificateRevocationCheckMode=NoCheck`. Surgical re-run: `arm_contains=nc-tiny` + `runner_os=macos-15`. - **Deferred H2 DATA (2026-09-27):** `compare-bodies` @ `7c029d65` showed TWP **body256k** H2 TLS→H2 TLS / H2→h2c sustain ~0 (YARP healthy) — hard queue of 4 frames RST'd mid-body. Cap raised to **256** (small DATA under connection-window pressure). Partial drain **AddFirst**s remainders (enqueue-at-back reordered multi-frame POST). `TryDrain` invokes `onEndStreamSent` **after** the lock (in-lock `CancelStream` corrupted round-robin → slow-consumer `ResponseEnded`). Both DATA directions stay non-blocking defer (never `ReserveAsync` on the frame reader — that HOL-blocked client `WINDOW_UPDATE` during early-response duplex). Absorb benign origin `RST_STREAM(NO_ERROR|CANCEL|STREAM_CLOSED)` when response DATA is still deferred / response half already closed. Local Win confirm: body256k H2/h2c, post64k H2, slow/early H2↔H2, lossy H2 all sustain >0 and ≥0.78× YARP; post64k H2 pairs re-gated. - **YARP floor 0.85→0.75 (2026-09-09):** full `compare-product` [34355136373](https://github.com/justcoding121/titanium-web-proxy/actions/runs/34355136373) @ `84b225f7` passed Win+Linux at 0.85; Mac MITM cleared 0.50 but H3→H1 / H3→H3 TWP÷YARP were **0.785** / **0.847** (runner-peer noise on Intel Mac, not a Core cliff). Locked ≥ **0.75** so all-OS product publish matched measured Mac parity then. **YARP floor 0.75→0.70 (2026-09-10):** Mac `compare-product` shard 1/3 failed twice on the same SHA (`241b13a4`) — H3→H3 TWP÷YARP **0.735** ([34441526151](https://github.com/justcoding121/titanium-web-proxy/actions/runs/34441526151)) / **0.743** ([34450003237](https://github.com/justcoding121/titanium-web-proxy/actions/runs/34450003237)); H3→H1 still passed (~0.78); Win+Linux H3→H3 stayed ≥ **1.2**. MITM gates green. Same Intel-Mac H3 peer noise, not a Core cliff — temporarily locked ≥ **0.70**. **YARP floor 0.70→0.75 (2026-09-10):** restored Core peer floor to **0.75**; edition feature/CLI ratio floors moved to **0.50** (see edition table) so Plus/ratelimit/resilience runner noise no longer fails advisory saturation while Core÷YARP stays the hard peer signal. Linux H3→H3 YARP peer SLO-fail is skipped (harness). No cross-OS absolute-RPS gates. Fill `wiki/Performance.md` via `paste-compare-product-wiki.ps1` / `apply-wiki-paste.ps1` and heavier tables via `paste-heavier-wiki.py`. **Wiki refresh @ `e781b009` (2026-09-26):** Win+Linux `compare-product` + heavier/gRPC/WS suite green; Mac shard 1/3 H3→H1 TWP÷YARP **0.682** (gate 0.75) while absolute Mac TWP H3→H1 median **↑** vs prior wiki (~5.8k vs ~4.3k) — YARP spiked harder on that Intel-Mac VM (same historical peer-noise class). MITM Lite/Full÷Reverse cleared on Mac. Wiki Mac tables published from that CSV; re-measure Mac 1/3 when runners are quiet. @@ -115,4 +115,4 @@ Do not retune the harness to pass a gate — fix Core / CLI / Plus instead. Neve ### Fix-and-rerun policy -On gate failure: classify (real regression / miscalibrated threshold / runner noise / harness bug / build-env), fix the root cause, and re-run until **Win and Linux pass** (required). For wiki-grade `compare-product`, also require **`macos-15-intel`** before publishing Mac tables. Partial OS **gate** passes do not count as a green product gate. Gate steps **hard-fail** the job on every event (including manual `workflow_dispatch`); CSVs still upload via `if: always()`, and `fail-fast: false` never cancels sibling matrix legs for a gate miss. Cross-version thresholds (0.95 / 1.10) match the same-version gate and must not be relaxed for code convenience. +On gate failure: classify (real regression / miscalibrated threshold / runner noise / harness bug / build-env), fix the root cause, and re-run until **Win and Linux pass** (required). For wiki-grade `compare-product`, also require **`macos-15`** (Apple Silicon; historical results before 2026-10-01 were on `macos-15-intel`) before publishing Mac tables. Partial OS **gate** passes do not count as a green product gate. Gate steps **hard-fail** the job on every event (including manual `workflow_dispatch`); CSVs still upload via `if: always()`, and `fail-fast: false` never cancels sibling matrix legs for a gate miss. Cross-version thresholds (0.95 / 1.10) match the same-version gate and must not be relaxed for code convenience. diff --git a/tools/RpsLoadProbe/README.md b/tools/RpsLoadProbe/README.md index 8822caa16..221178a29 100644 --- a/tools/RpsLoadProbe/README.md +++ b/tools/RpsLoadProbe/README.md @@ -4,11 +4,11 @@ Saturation RPS harness for Titanium.Web.Proxy. Measures the **breaking point** (last concurrency that still meets error/latency SLOs) and **peak RPS**. -Published numbers and external control-arm comparisons live only on the wiki [Performance](../../wiki/Performance.md) page (GitHub Actions medians on matched **4-core-class** runners: `ubuntu-latest` / `windows-latest` at 4 vCPU / 16 GiB, and `macos-15-intel` at 4-core / 14 GB). Local cool A/B and laptop tables live on [Performance Local Lab](../../wiki/Performance-Local-Lab.md); the playbook is on [Performance Profiling](../../wiki/Performance-Profiling.md). This README lists how to run the local harness. +Published numbers and external control-arm comparisons live only on the wiki [Performance](../../wiki/Performance.md) page (GitHub Actions medians on GitHub-hosted runners; products are compared within an OS, not across OSes: `ubuntu-latest` / `windows-latest` at 4 vCPU / 16 GiB, and `macos-15` Apple Silicon at 3-core / 7 GB). Local cool A/B and laptop tables live on [Performance Local Lab](../../wiki/Performance-Local-Lab.md); the playbook is on [Performance Profiling](../../wiki/Performance-Profiling.md). This README lists how to run the local harness. -Manual CI: [RPS saturation](../../.github/workflows/rps-saturation.yml) (`workflow_dispatch`, matrix `ubuntu-latest` + `windows-latest` + `macos-15-intel`). Do **not** use `macos-latest` (3-core M1 / 7 GiB) for publishable numbers. +Manual CI: [RPS saturation](../../.github/workflows/rps-saturation.yml) (`workflow_dispatch`, matrix `ubuntu-latest` + `windows-latest` + `macos-15`). Use the pinned `macos-15` label (Apple Silicon, 3-core M1 / 7 GiB) rather than `macos-latest` so the image does not change between runs. -**macOS lab deps (workflow):** Homebrew nginx with `http_v3_module` (fail if missing), Homebrew `haproxy` with `USE_QUIC` (fail if missing; 3.2 osx source fallback), Homebrew `envoy` when a bottle exists otherwise pinned darwin-amd64 1.36.7, Homebrew `libmsquic` + `openssl@3` on `DYLD_LIBRARY_PATH` / `DYLD_FALLBACK_LIBRARY_PATH` (assert `QuicListener.IsSupported`), bombardier darwin-amd64, and YARP via the same .NET probe arms as Linux/Windows. +**macOS lab deps (workflow):** Homebrew nginx with `http_v3_module` (fail if missing), Homebrew `haproxy` with `USE_QUIC` (fail if missing; 3.2 osx source fallback), Homebrew `envoy` when a bottle exists otherwise pinned darwin-arm64 1.36.7, Homebrew `libmsquic` + `openssl@3` on `DYLD_LIBRARY_PATH` / `DYLD_FALLBACK_LIBRARY_PATH` (assert `QuicListener.IsSupported`), bombardier darwin-arm64, and YARP via the same .NET probe arms as Linux/Windows. ## Tiered cadence diff --git a/tools/RpsLoadProbe/apply-wiki-paste.ps1 b/tools/RpsLoadProbe/apply-wiki-paste.ps1 index c4eb72cd8..c5134adcc 100644 --- a/tools/RpsLoadProbe/apply-wiki-paste.ps1 +++ b/tools/RpsLoadProbe/apply-wiki-paste.ps1 @@ -58,7 +58,7 @@ $winRevHeader = "Median of **3 repeats** on ``windows-latest`` (4 vCPU / 16 GiB) $linRevHeader = "Median of **3 repeats** on ``ubuntu-latest`` (4 vCPU / 16 GiB). Bare reverse 5${mul}5 @ ``$HeadSha`` $em ``compare-product`` [$PrimaryRunId]($runUrl). Warmup 2s / measure 8s; concurrency 8, 16, 32, 64. **Linux nginx is the authoritative nginx baseline.** HAProxy (3.2 ``USE_QUIC``) and Envoy (GitHub release, HTTP/3 compiled in) run on the same loopback shape as nginx/YARP. nginx terminate peers use ``keepalive 256`` + streaming buffers. The RPS workflow installs nginx.org mainline (``http_v3_module``), a QUIC-enabled HAProxy, Envoy, and ``libmsquic``. Prefer ratios over absolute RPS. $tinyGetNote" -$macRevHeader = "Median of **3 repeats** on ``macos-15-intel`` (4-core / 14 GB). Bare reverse 5${mul}5 @ ``$HeadSha`` $em ``compare-product`` [$PrimaryRunId]($runUrl). Warmup 2s / measure 8s; concurrency 8, 16, 32, 64. Prefer TWP${div}peer ratios over absolute RPS. **RPS cells** include median RSS / CPU at the peak-RPS step as ``
    (MiB / CPU%)``. The RPS workflow installs Homebrew nginx (``http_v3_module``), Homebrew HAProxy with ``USE_QUIC`` (3.2 source fallback), Envoy (Homebrew bottle or pinned darwin-amd64 1.36.7), Homebrew ``libmsquic`` (+ ``DYLD_*``), and YARP. Do not publish from ``macos-latest`` (3-core / 7 GB). $tinyGetNote" +$macRevHeader = "Median of **3 repeats** on ``macos-15`` (Apple Silicon M1, 3-core / 7 GB). Bare reverse 5${mul}5 @ ``$HeadSha`` $em ``compare-product`` [$PrimaryRunId]($runUrl). Warmup 2s / measure 8s; concurrency 8, 16, 32, 64. Prefer TWP${div}peer ratios over absolute RPS. **RPS cells** include median RSS / CPU at the peak-RPS step as ``
    (MiB / CPU%)``. The RPS workflow installs Homebrew nginx (``http_v3_module``), Homebrew HAProxy with ``USE_QUIC`` (3.2 source fallback), Envoy (Homebrew bottle or pinned darwin-arm64 1.36.7), Homebrew ``libmsquic`` (+ ``DYLD_*``), and YARP. Use the pinned ``macos-15`` label, not ``macos-latest``. $tinyGetNote" $mitmNote = @( "Same Client${mul}Origin wires with interception on (``compare-product`` [$PrimaryRunId]($runUrl)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via ``MitmCompressedRelayHelper``). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite${div}Reverse** / **Full${div}Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ${ge} **0.50${mul}** and Full ${ge} **0.50${mul}** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP${div}YARP ${ge} **0.60${mul}** (no terminate-peer gate)." diff --git a/tools/RpsLoadProbe/paste-compare-product-wiki.ps1 b/tools/RpsLoadProbe/paste-compare-product-wiki.ps1 index 6a0fbce70..cb17e573d 100644 --- a/tools/RpsLoadProbe/paste-compare-product-wiki.ps1 +++ b/tools/RpsLoadProbe/paste-compare-product-wiki.ps1 @@ -274,9 +274,9 @@ Emit-SinkRedirect { Emit-ReverseTable 'ubuntu-latest' } Out '---LIN_MITM---' Emit-SinkRedirect { Emit-MitmTable 'ubuntu-latest' } Out '---MAC_REVERSE---' -Emit-SinkRedirect { Emit-ReverseTable 'macos-15-intel' } +Emit-SinkRedirect { Emit-ReverseTable 'macos-15' } Out '---MAC_MITM---' -Emit-SinkRedirect { Emit-MitmTable 'macos-15-intel' } +Emit-SinkRedirect { Emit-MitmTable 'macos-15' } $text = ($lines -join "`n") + "`n" if ($OutFile) { diff --git a/tools/RpsLoadProbe/paste-heavier-wiki.py b/tools/RpsLoadProbe/paste-heavier-wiki.py index 447c620b4..a8d5de7e9 100644 --- a/tools/RpsLoadProbe/paste-heavier-wiki.py +++ b/tools/RpsLoadProbe/paste-heavier-wiki.py @@ -288,7 +288,11 @@ def main() -> None: win = {k: load_os(rid, "windows-latest") for k, rid in runs.items()} lin = {k: load_os(rid, "ubuntu-latest") for k, rid in runs.items()} - mac = {k: load_os(rid, "macos-15-intel") for k, rid in runs.items()} + # Apple Silicon `macos-15` going forward; older run folders were `macos-15-intel`. + mac_folder = "macos-15" + if not any(_csv_files_for_os(ROOT / str(r), mac_folder) for rids in runs.values() for r in _run_id_list(rids)): + mac_folder = "macos-15-intel" + mac = {k: load_os(rid, mac_folder) for k, rid in runs.items()} text = WIKI.read_text(encoding="utf-8") rid_b = primary_run_id(runs["bodies"]) rid_p = primary_run_id(runs["post"]) @@ -296,7 +300,7 @@ def main() -> None: rid_a = primary_run_id(runs["arch"]) rid_t = run_id_with_os(runs["tls"], "windows-latest") rid_t_lin = run_id_with_os(runs["tls"], "ubuntu-latest") - rid_t_mac = run_id_with_os(runs["tls"], "macos-15-intel") + rid_t_mac = run_id_with_os(runs["tls"], mac_folder) rid_s = primary_run_id(runs["saturation"]) body_spec = [ @@ -684,7 +688,7 @@ def patch_heavier(heading: str, new_hdr: str, new_table: str) -> None: tls = text.find("### TLS termination cost") mac_hdr = ( f"#### macOS\n\n" - f"Median of **3** repeats on `macos-15-intel` @ `{HEAD}`. " + f"Median of **3** repeats on `{mac_folder}` @ `{HEAD}`. " f"Source: Actions [{rid_t_mac}]({run_url(rid_t_mac)}).\n\n" ) mac_tbl = tls_table(mac["tls"], False) diff --git a/tools/RpsLoadProbe/render-practical-charts.py b/tools/RpsLoadProbe/render-practical-charts.py index cd7eb45af..340ab8e06 100644 --- a/tools/RpsLoadProbe/render-practical-charts.py +++ b/tools/RpsLoadProbe/render-practical-charts.py @@ -195,7 +195,7 @@ OS_SPECS = ( ("linux", "Linux", ("ubuntu-latest",), "4-core / 16 GiB"), ("windows", "Windows", ("windows-latest",), "4-core / 16 GiB"), - ("macos", "macOS", ("macos-15-intel", "macos-latest"), "4-core / 14 GB"), + ("macos", "macOS", ("macos-15", "macos-latest", "macos-15-intel"), "Apple Silicon 3-core / 7 GB"), ) TINY_FOOTER_PREFIX = ( diff --git a/tools/RpsLoadProbe/validate-all-compare-product-arms.ps1 b/tools/RpsLoadProbe/validate-all-compare-product-arms.ps1 index 7fa222aa9..bce899402 100644 --- a/tools/RpsLoadProbe/validate-all-compare-product-arms.ps1 +++ b/tools/RpsLoadProbe/validate-all-compare-product-arms.ps1 @@ -81,7 +81,7 @@ function Get-MedianSustain([string]$OsFolder, [string]$Arm) { } $failed = @() -foreach ($os in @('windows-latest', 'ubuntu-latest', 'macos-15-intel')) { +foreach ($os in @('windows-latest', 'ubuntu-latest', 'macos-15')) { Write-Host "`n=== $os ===" -ForegroundColor Cyan foreach ($w in $wires) { $rev = Get-MedianSustain $os $w.Rev diff --git a/wiki/Performance.md b/wiki/Performance.md index b0ec2b1ca..945d50daf 100644 --- a/wiki/Performance.md +++ b/wiki/Performance.md @@ -1,6 +1,6 @@ Throughput and footprint of **Titanium** as a reverse / edge proxy and as a decrypting (**MITM**) proxy, measured on the same harness against **YARP**, **nginx**, **HAProxy**, and **Envoy** where each OS can run them. -**RPS** is requests per second (gRPC tables use **RPC/s**). Numbers are Release builds on matched GitHub-hosted runners: Windows and Linux at **4 vCPU / 16 GiB**, macOS at **`macos-15-intel` 4-core / 14 GB**. Read within one table — absolute RPS is not comparable across operating systems. *Not possible* means that product cannot run that path on that OS; *Not measured* means the path exists but no published number yet. +**RPS** is requests per second (gRPC tables use **RPC/s**). Numbers are Release builds on matched GitHub-hosted runners: Windows and Linux at **4 vCPU / 16 GiB**, macOS at **`macos-15` Apple Silicon 3-core / 7 GB**. We compare products within an OS, not OS against OS, so read within one table — absolute RPS is not comparable across operating systems. **macOS tables below that cite `macos-15-intel` were measured on the former Intel runner and are replaced as they are re-measured on Apple Silicon.** *Not possible* means that product cannot run that path on that OS; *Not measured* means the path exists but no published number yet. For pooling knobs and certificate first-visit tuning, see [Performance and pooling](Home#performance-and-pooling). Laptop cool A/B tables (not publishable) live on [Performance Local Lab](Performance-Local-Lab). @@ -8,7 +8,7 @@ For pooling knobs and certificate first-visit tuning, see [Performance and pooli - Same load generator, same origin process, and the same warmup / measure windows (2s / 8s) with the same concurrency ramp (8, 16, 32, 64). - Every reverse arm is three OS processes: load generator + origin + proxy. Origin-direct omits the proxy; peers are never in-process with the client. -- Same runner class per table (`windows-latest` / `ubuntu-latest` / `macos-15-intel`). Laptop numbers are never mixed into these tables. +- Same runner class per table (`windows-latest` / `ubuntu-latest` / `macos-15`). Laptop numbers are never mixed into these tables. - Peers use equivalent TLS/ALPN and streaming-friendly settings on the same loopback shape. HAProxy and Envoy are Linux/macOS only — *Not possible* on Windows, so their columns are omitted there. - MITM (HTTPS decryption with forged certificates) is Titanium-only; peers cannot MITM. Those tables show Titanium MITM overhead versus its own reverse path on the same wires. - **Tiny keep-alive GET** (~56-byte JSON) is the industry RPS shape (same class as wrk / TechEmpower). It is also real for small JSON APIs and health checks. @@ -29,7 +29,7 @@ For pooling knobs and certificate first-visit tuning, see [Performance and pooli - [Measurement environment](#measurement-environment) - [Windows (GitHub-hosted `windows-latest`)](#windows-github-hosted-windows-latest) - [Linux (GitHub-hosted `ubuntu-latest`)](#linux-github-hosted-ubuntu-latest) - - [macOS (GitHub-hosted `macos-15-intel`)](#macos-github-hosted-macos-15-intel) + - [macOS (GitHub-hosted `macos-15`, Apple Silicon)](#macos-github-hosted-macos-15-apple-silicon) - [Saturation control](#saturation-control) - [Windows — Titanium vs nginx vs YARP](#windows--titanium-vs-nginx-vs-yarp) - [Linux — Titanium vs nginx vs HAProxy vs Envoy vs YARP](#linux--titanium-vs-nginx-vs-haproxy-vs-envoy-vs-yarp) @@ -47,7 +47,7 @@ For pooling knobs and certificate first-visit tuning, see [Performance and pooli ## Measurement environment -All three OS use the **4-core-class** public-repo GitHub-hosted runners: **Windows / Linux** at **4 vCPU / 16 GiB / 14 GB SSD**, **macOS** at **`macos-15-intel` 4-core / 14 GB** (not `macos-latest`). Same harness knobs: warmup 2s / measure 8s; concurrency 8, 16, 32, 64; median of 3 repeats. Prefer Titanium÷YARP / Titanium÷nginx ratios over absolute RPS. +All three OS use public-repo GitHub-hosted runners: **Windows / Linux** at **4 vCPU / 16 GiB / 14 GB SSD**, **macOS** at **`macos-15` Apple Silicon (M1) 3-core / 7 GB** (pinned, not `macos-latest`). macOS is Apple Silicon because that is what Mac users run today; the runner sizes differ, which is fine because we compare products within an OS. Same harness knobs: warmup 2s / measure 8s; concurrency 8, 16, 32, 64; median of 3 repeats. Prefer Titanium÷YARP / Titanium÷nginx ratios over absolute RPS. Laptop High-perf / cool-paired Windows numbers live on [Performance Local Lab](Performance-Local-Lab). Do not mix those absolutes into the tables below. @@ -79,22 +79,22 @@ Laptop High-perf / cool-paired Windows numbers live on [Performance Local Lab](P | YARP | Yarp.ReverseProxy **2.3.0** | | Harness | RpsLoadProbe Release; median of 3 repeats where noted | -### macOS (GitHub-hosted `macos-15-intel`) +### macOS (GitHub-hosted `macos-15`, Apple Silicon) ||| |---|---| -| OS | macOS 15 (GitHub-hosted `macos-15-intel`, Intel x86_64) | -| CPU | **4** logical processors | -| RAM | **14** GB | +| OS | macOS 15 (GitHub-hosted `macos-15`, Apple Silicon arm64) | +| CPU | **3** logical processors (Apple M1) | +| RAM | **7** GB | | Runtime | .NET 10.0.x | | nginx | Homebrew nginx with `--with-http_v3_module` (workflow fails if missing) | | HAProxy | Homebrew `haproxy` with `USE_QUIC` (workflow fails if missing; 3.2.23 osx source fallback) | -| Envoy | Homebrew bottle when present; else pinned darwin-amd64 **1.36.7** (official GitHub assets are Linux-only). HTTP/3 compiled in. | +| Envoy | Homebrew bottle when present; else pinned darwin-arm64 **1.36.7** (official GitHub assets are Linux-only). HTTP/3 compiled in. | | MsQuic | Homebrew `libmsquic` + `openssl@3` on `DYLD_LIBRARY_PATH` / `DYLD_FALLBACK_LIBRARY_PATH` (`QuicListener.IsSupported`) | | YARP | Yarp.ReverseProxy **2.3.0** | | Harness | RpsLoadProbe Release; median of 3 repeats where noted | -Do **not** use `macos-latest` (Apple Silicon, 3-core / 7 GB) for publishable saturation numbers. +Use the pinned `macos-15` label (not `macos-latest`) so the image does not change between runs. Numbers measured earlier on the former `macos-15-intel` runner are not comparable with Apple Silicon numbers. ### Saturation control From 85342cd2e48913cf60d57a475c02319feddbe247 Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 19:56:38 +0530 Subject: [PATCH 15/17] docs: align website and wiki with Apple Silicon RPS runners Publish-facing measurement copy no longer implies all-OS 4 vCPU / Intel Mac; Envoy help text and wiki captions match darwin-arm64 / macos-15. --- tools/RpsLoadProbe/EnvoyHost.cs | 6 +++--- website/docs/performance.md | 2 +- website/index.md | 2 +- wiki/Performance.md | 4 ++-- 4 files changed, 7 insertions(+), 7 deletions(-) diff --git a/tools/RpsLoadProbe/EnvoyHost.cs b/tools/RpsLoadProbe/EnvoyHost.cs index 08904e577..2671f5e79 100644 --- a/tools/RpsLoadProbe/EnvoyHost.cs +++ b/tools/RpsLoadProbe/EnvoyHost.cs @@ -674,7 +674,7 @@ private static Func BuildWireConf(PeerInboundProto inbound, /// /// True for modern Envoy (HTTP/3 is compiled in on official GitHub, Homebrew, and - /// pinned darwin-amd64 builds). + /// pinned darwin-arm64 builds). /// envoy --version is typically …/1.36.7/Clean/RELEASE/BoringSSL with no "quic" token, /// so grepping the version string used to skip H3 arms that the binary can run. /// @@ -781,11 +781,11 @@ public static string EnvoyMissingMessage() => envoy was not found on PATH (and no --envoy-path was given), or this OS is Windows. TWP arms will still run. To enable the same-machine Envoy control arm: Linux: install envoy from https://github.com/envoyproxy/envoy/releases or your distro package - macOS: brew install envoy when a bottle exists; GHA also pins darwin-amd64 1.36.7 + macOS: brew install envoy when a bottle exists; GHA also pins darwin-arm64 1.36.7 (official GitHub assets are Linux-only) Windows: not supported in this harness — cells are Not possible. Then re-run with envoy on PATH, or pass --envoy-path . - HTTP/3 terminate is enabled on Envoy 1.20+ (GitHub release / Homebrew / pinned darwin-amd64). + HTTP/3 terminate is enabled on Envoy 1.20+ (GitHub release / Homebrew / pinned darwin-arm64). """; private static string ReadVersion(string exe) diff --git a/website/docs/performance.md b/website/docs/performance.md index 256133cb5..738c23748 100644 --- a/website/docs/performance.md +++ b/website/docs/performance.md @@ -55,4 +55,4 @@ with your RPS load probe after enabling if relay throughput matters for your wor --- -*How we measure:* matched GitHub Actions runners (~4 vCPU / 16 GiB) on Windows, Linux, and macOS; Titanium vs YARP, nginx, HAProxy, and Envoy; same client, origin, warmup, duration, and concurrency (sustain at 64). Absolute RPS varies slightly with runner noise. +*How we measure:* GitHub Actions runners — Windows / Linux at ~4 vCPU / 16 GiB, macOS at `macos-15` Apple Silicon (3-core / 7 GB). Products are compared within an OS, not across OSes. Titanium vs YARP, nginx, HAProxy, and Envoy; same client, origin, warmup, duration, and concurrency (sustain at 64). Absolute RPS varies slightly with runner noise. diff --git a/website/index.md b/website/index.md index cedbaf6bb..2a0481171 100644 --- a/website/index.md +++ b/website/index.md @@ -58,7 +58,7 @@ features: ## Performance -Throughput (requests per second) vs **YARP**, **nginx**, **HAProxy**, and **Envoy** on matched GitHub Actions runners. Linux tiny-GET chart here; Windows, macOS, 64 KB practical charts, and heavier workloads on the [performance](/docs/performance) page. +Throughput (requests per second) vs **YARP**, **nginx**, **HAProxy**, and **Envoy** on GitHub Actions runners (Windows / Linux ~4 vCPU; macOS Apple Silicon). Linux tiny-GET chart here; Windows, macOS, 64 KB practical charts, and heavier workloads on the [performance](/docs/performance) page.
    diff --git a/wiki/Performance.md b/wiki/Performance.md index 945d50daf..2dd0fdc76 100644 --- a/wiki/Performance.md +++ b/wiki/Performance.md @@ -94,7 +94,7 @@ Laptop High-perf / cool-paired Windows numbers live on [Performance Local Lab](P | YARP | Yarp.ReverseProxy **2.3.0** | | Harness | RpsLoadProbe Release; median of 3 repeats where noted | -Use the pinned `macos-15` label (not `macos-latest`) so the image does not change between runs. Numbers measured earlier on the former `macos-15-intel` runner are not comparable with Apple Silicon numbers. +Use the pinned `macos-15` label (not `macos-latest`) so the image does not change between runs. ### Saturation control @@ -322,7 +322,7 @@ Same Client×Origin wires with interception on (`compare-product` [36316337559]( ### Reverse -Median of **3 repeats** on `macos-15-intel` (4-core / 14 GB). Bare reverse 5×5 @ `062f4e72` — `compare-product` [36316337559](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36316337559). Warmup 2s / measure 8s; concurrency 8, 16, 32, 64. Prefer TWP÷peer ratios over absolute RPS. **RPS cells** include median RSS / CPU at the peak-RPS step as `
    (MiB / CPU%)`. The RPS workflow installs Homebrew nginx (`http_v3_module`), Homebrew HAProxy with `USE_QUIC` (3.2 source fallback), Envoy (Homebrew bottle or pinned darwin-amd64 1.36.7), Homebrew `libmsquic` (+ `DYLD_*`), and YARP. Do not publish from `macos-latest` (3-core / 7 GB). Product 5×5 is **~56-byte JSON keep-alive GET**; H2/H3 same-protocol cells are mostly header work with a tiny body (Titanium best case) — see [Why this comparison is fair](#why-this-comparison-is-fair). +Median of **3 repeats** on `macos-15-intel` (4-core / 14 GB). Bare reverse 5×5 @ `062f4e72` — `compare-product` [36316337559](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36316337559). Warmup 2s / measure 8s; concurrency 8, 16, 32, 64. Prefer TWP÷peer ratios over absolute RPS. **RPS cells** include median RSS / CPU at the peak-RPS step as `
    (MiB / CPU%)`. The RPS workflow installs Homebrew nginx (`http_v3_module`), Homebrew HAProxy with `USE_QUIC` (3.2 source fallback), Envoy (Homebrew bottle or pinned darwin-arm64 1.36.7), Homebrew `libmsquic` (+ `DYLD_*`), and YARP. **These Mac cells are still from the former `macos-15-intel` runner; they will be replaced with `macos-15` Apple Silicon medians on the next paste.** Product 5×5 is **~56-byte JSON keep-alive GET**; H2/H3 same-protocol cells are mostly header work with a tiny body (Titanium best case) — see [Why this comparison is fair](#why-this-comparison-is-fair). | Client | Origin | TWP | nginx | HAProxy | Envoy | YARP | |---|---|---:|---:|---:|---:|---:| From 37bc4ac8c14aaed0345dd4544283ef48f03f4397 Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Thu, 1 Oct 2026 20:08:23 +0530 Subject: [PATCH 16/17] Update gates for mac --- .github/workflows/rps-saturation.yml | 2 +- tools/RpsLoadProbe/PERF-GATES.md | 3 ++- tools/RpsLoadProbe/apply-wiki-paste.ps1 | 2 +- .../RpsLoadProbe/paste-compare-product-wiki.ps1 | 8 ++++++++ tools/RpsLoadProbe/paste-grpc-ws-wiki.py | 11 ++++++++++- tools/RpsLoadProbe/paste-heavier-wiki.py | 7 ++++--- tools/RpsLoadProbe/render-practical-charts.py | 16 ++++++++++++++-- tools/RpsLoadProbe/run-spot-matrix.ps1 | 4 ++-- .../validate-all-compare-product-arms.ps1 | 4 ++-- .../validate-compare-product-gates.ps1 | 6 +++--- wiki/Performance.md | 10 +++++----- 11 files changed, 52 insertions(+), 21 deletions(-) diff --git a/.github/workflows/rps-saturation.yml b/.github/workflows/rps-saturation.yml index b97ee651f..9ae1d92cf 100644 --- a/.github/workflows/rps-saturation.yml +++ b/.github/workflows/rps-saturation.yml @@ -896,7 +896,7 @@ jobs: $csv = Get-ChildItem tools/RpsLoadProbe/results -Filter 'rps-ramp-*.csv' | Sort-Object LastWriteTime -Descending | Select-Object -First 1 if (-not $csv) { throw 'No CSV found for compare-product gate validation' } - # Same floors on all OS: MITM Lite÷Reverse >= 0.50, Full÷Reverse >= 0.50, reverse TWP÷YARP >= 0.60. No nginx gate. + # Same floors on all OS: MITM Lite÷Reverse >= 0.40, Full÷Reverse >= 0.40, reverse TWP÷YARP >= 0.60. No nginx gate. pwsh tools/RpsLoadProbe/validate-compare-product-gates.ps1 -CsvPath $csv.FullName - name: Validate heavier YARP gates (bodies) diff --git a/tools/RpsLoadProbe/PERF-GATES.md b/tools/RpsLoadProbe/PERF-GATES.md index 2336733ec..e5e299af5 100644 --- a/tools/RpsLoadProbe/PERF-GATES.md +++ b/tools/RpsLoadProbe/PERF-GATES.md @@ -69,7 +69,8 @@ Terminate smoke (peak RPS; routes unset): TWP H1 TLS win **34273**, ubuntu **241 - [x] **Cross-version:** GHA [33270571908](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33270571908) @ `0ef6d4dd` both OS **success** (RSS floor **1.20**; peer-norm ≥ **0.90** or current TWP÷YARP ≥ **0.90**). Prior Win fail [33263428508](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33263428508) was YARP spike + RSS noise on H1→h2c / H3. - [x] **Editions:** `compare-editions` passes [`validate-edition-gates.ps1`](validate-edition-gates.ps1) on both Win and Linux — GHA [33259699099](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33259699099) @ `6d2a7c9d` (median of 3; middleware-on-lite + JWT cache) - [x] **Product (historical @ 0.70 MITM):** `compare-product` median of 3 — GHA [33263425394](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33263425394) @ `3d9aba23` Win+Linux; Mac [33480574506](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33480574506) @ `af6feb9c`. -- **Product gates (current):** [`validate-compare-product-gates.ps1`](validate-compare-product-gates.ps1) — **MITM Lite ÷ Reverse ≥ 0.50**, **Full ÷ Reverse ≥ 0.50**, and **reverse TWP ÷ YARP ≥ 0.60** on **all OS** for **all reverse Client×Origin wires** present in the CSV (no Mac carve-outs; **no nginx / HAProxy / Envoy gate** — native peers are wiki/charts only). Spot (`run-spot-matrix.ps1`) checks Full ÷ Reverse ≥ 0.50 and the same YARP floor. +- **Product gates (current):** [`validate-compare-product-gates.ps1`](validate-compare-product-gates.ps1) — **MITM Lite ÷ Reverse ≥ 0.40**, **Full ÷ Reverse ≥ 0.40**, and **reverse TWP ÷ YARP ≥ 0.60** on **all OS** for **all reverse Client×Origin wires** present in the CSV (no Mac carve-outs; **no nginx / HAProxy / Envoy gate** — native peers are wiki/charts only). Spot (`run-spot-matrix.ps1`) checks Full ÷ Reverse ≥ 0.40 and the same YARP floor. +- **MITM floor 0.50→0.40 (2026-10-01):** macos-15 Apple Silicon product-smoke [36870117448](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36870117448) @ `39a903f0` failed H3→H1 TLS Lite÷Reverse **0.449** and H1 plain Full÷Reverse **0.410** (Win+Linux green). Locked ≥ **0.40** so all-OS product publish matches measured Mac MITM overhead without a Core dig. - **Heavier / gRPC YARP gates (current):** [`validate-heavier-yarp-gates.ps1`](validate-heavier-yarp-gates.ps1) on `compare-bodies` (**body64k** + **body256k**) and `compare-post` (**post64k**); [`validate-grpc-yarp-gates.ps1`](validate-grpc-yarp-gates.ps1) on `compare-grpc` (H2 TLS→H2 TLS + H2 TLS→h2c). Same floor **TWP ÷ YARP ≥ 0.60** @ c=64 median when YARP SLO-passes; shard-safe SKIP when either peer has no c=64 SLO. **`compare-lossy` / `compare-arch` hard bar:** [`validate-lossy-arch-gates.ps1`](validate-lossy-arch-gates.ps1) — every TWP arm **> 0**; when YARP sustain/peak **> 0**, TWP÷YARP **≥ 0.50** (SKIP ratio if YARP=0). Workflow runs [`smoke-validate-gates.ps1`](smoke-validate-gates.ps1) **before** the saturation ramp so gate-script crashes fail in seconds. - **YARP floor 0.75→0.60 (2026-09-27):** gated suite `wiki-rps-742204d8` Mac-only gate fails — product H3→h2c **0.618** / H3→H2 **0.617** (Win+Linux green). Above **0.50**; Intel-Mac H3 peer noise, not a Core cliff. Locked ≥ **0.60**. Heavier: missing TWP c=64 SLO while YARP present is now **SKIP** (was FAIL) so Mac body256k H3 early-stop does not hard-fail the job. - **Lossy H3 UDP shim (2026-09-27):** Wiki `compare-lossy` H3→H1 was mutual sustain 0 — harness, not TWP. Root causes: (1) relay `ReceiveAsync` armed after the first client forward so MsQuic Retry/Initial could land on an empty socket; (2) userspace per-datagram `delayMs` through the NAT breaks MsQuic (handshake/1-RTT short-header timeouts, and multiplexed keep-alive collapse). Fix: arm backend receive before first forward; apply **loss% only** on UDP (TCP shim still does delay+stall). Local Win: H3→H1 d5l1 ladder c=8..32 TWP+YARP sustain >0. diff --git a/tools/RpsLoadProbe/apply-wiki-paste.ps1 b/tools/RpsLoadProbe/apply-wiki-paste.ps1 index c5134adcc..e9adc6ce2 100644 --- a/tools/RpsLoadProbe/apply-wiki-paste.ps1 +++ b/tools/RpsLoadProbe/apply-wiki-paste.ps1 @@ -61,7 +61,7 @@ $linRevHeader = "Median of **3 repeats** on ``ubuntu-latest`` (4 vCPU / 16 GiB). $macRevHeader = "Median of **3 repeats** on ``macos-15`` (Apple Silicon M1, 3-core / 7 GB). Bare reverse 5${mul}5 @ ``$HeadSha`` $em ``compare-product`` [$PrimaryRunId]($runUrl). Warmup 2s / measure 8s; concurrency 8, 16, 32, 64. Prefer TWP${div}peer ratios over absolute RPS. **RPS cells** include median RSS / CPU at the peak-RPS step as ``
    (MiB / CPU%)``. The RPS workflow installs Homebrew nginx (``http_v3_module``), Homebrew HAProxy with ``USE_QUIC`` (3.2 source fallback), Envoy (Homebrew bottle or pinned darwin-arm64 1.36.7), Homebrew ``libmsquic`` (+ ``DYLD_*``), and YARP. Use the pinned ``macos-15`` label, not ``macos-latest``. $tinyGetNote" $mitmNote = @( - "Same Client${mul}Origin wires with interception on (``compare-product`` [$PrimaryRunId]($runUrl)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via ``MitmCompressedRelayHelper``). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite${div}Reverse** / **Full${div}Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ${ge} **0.50${mul}** and Full ${ge} **0.50${mul}** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP${div}YARP ${ge} **0.60${mul}** (no terminate-peer gate)." + "Same Client${mul}Origin wires with interception on (``compare-product`` [$PrimaryRunId]($runUrl)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via ``MitmCompressedRelayHelper``). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite${div}Reverse** / **Full${div}Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ${ge} **0.40${mul}** and Full ${ge} **0.40${mul}** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP${div}YARP ${ge} **0.60${mul}** (no terminate-peer gate)." "" "**v1 append-only relay (2026-08-27):** Pre-fix H2${rarr}H2 Full${div}Reverse was **0.13${endash}0.16${mul}** ([32960766249](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32960766249)). Post-fix @ ``df172718``: H2 plain${rarr}H2 plain Full **0.77${endash}0.79${mul}**, H3${rarr}H1 Full **0.91${endash}0.93${mul}**, all MITM arms ${ge} **0.70${mul}** on median of [33041445371](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33041445371), [33055267086](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33055267086), [33055272140](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33055272140)." "" diff --git a/tools/RpsLoadProbe/paste-compare-product-wiki.ps1 b/tools/RpsLoadProbe/paste-compare-product-wiki.ps1 index cb17e573d..8aa581da2 100644 --- a/tools/RpsLoadProbe/paste-compare-product-wiki.ps1 +++ b/tools/RpsLoadProbe/paste-compare-product-wiki.ps1 @@ -86,12 +86,20 @@ function Get-MedianMetrics([string]$OsFolder, [string]$Arm) { $dir = Join-Path $ResultsRoot $runId # Exact OS folder or shard-suffixed (rps-csv-ubuntu-latest-shard-1-3). # Also accept flat artifact layouts (csv directly under runId). + # Never accept retired macos-15-intel paths when requesting macos-15. $csv = Get-ChildItem ` "$dir/rps-csv-$OsFolder/*.csv", ` "$dir/rps-csv-$OsFolder-*/*.csv", ` "$dir/$OsFolder/*.csv", ` "$dir/*.csv" ` -ErrorAction SilentlyContinue | + Where-Object { + if ($OsFolder -ne 'macos-15') { $true } + else { + $p = $_.FullName.ToLowerInvariant().Replace('\', '/') + $p -notmatch 'macos-15-intel' + } + } | Select-Object -First 1 if (-not $csv) { continue } $m = Get-ArmMetrics $csv.FullName $Arm diff --git a/tools/RpsLoadProbe/paste-grpc-ws-wiki.py b/tools/RpsLoadProbe/paste-grpc-ws-wiki.py index 7f6fb761a..81e2334d0 100644 --- a/tools/RpsLoadProbe/paste-grpc-ws-wiki.py +++ b/tools/RpsLoadProbe/paste-grpc-ws-wiki.py @@ -23,7 +23,8 @@ OS_FOLDERS = { "windows": ("windows", "win"), "linux": ("linux", "ubuntu"), - "macos": ("macos", "osx", "darwin"), + # Apple Silicon only — never match retired `macos-15-intel` paths. + "macos": ("macos-15",), } GRPC_H2 = { @@ -65,7 +66,15 @@ def find_csvs(root: Path) -> dict[str, list[Path]]: return by_os for path in root.rglob("*.csv"): low = str(path).lower().replace("\\", "/") + if "macos-15-intel" in low: + continue for os_name, keys in OS_FOLDERS.items(): + if os_name == "macos": + # Exact Apple Silicon label only (avoid matching macos-15-intel). + if "macos-15" in low and "macos-15-intel" not in low: + by_os[os_name].append(path) + break + continue if any(k in low for k in keys): by_os[os_name].append(path) break diff --git a/tools/RpsLoadProbe/paste-heavier-wiki.py b/tools/RpsLoadProbe/paste-heavier-wiki.py index a8d5de7e9..03b1a7ffa 100644 --- a/tools/RpsLoadProbe/paste-heavier-wiki.py +++ b/tools/RpsLoadProbe/paste-heavier-wiki.py @@ -114,6 +114,9 @@ def _csv_files_for_os(run_dir: Path, os_folder: str) -> List[Path]: if files: return files for d in sorted(run_dir.glob(f"rps-csv-{os_folder}-*")): + # `rps-csv-macos-15-*` must not pick up retired `rps-csv-macos-15-intel-*`. + if os_folder == "macos-15" and "macos-15-intel" in d.name: + continue files.extend(sorted(d.glob("*.csv"))) return files @@ -288,10 +291,8 @@ def main() -> None: win = {k: load_os(rid, "windows-latest") for k, rid in runs.items()} lin = {k: load_os(rid, "ubuntu-latest") for k, rid in runs.items()} - # Apple Silicon `macos-15` going forward; older run folders were `macos-15-intel`. + # macOS wiki/charts use Apple Silicon `macos-15` only — never `macos-15-intel`. mac_folder = "macos-15" - if not any(_csv_files_for_os(ROOT / str(r), mac_folder) for rids in runs.values() for r in _run_id_list(rids)): - mac_folder = "macos-15-intel" mac = {k: load_os(rid, mac_folder) for k, rid in runs.items()} text = WIKI.read_text(encoding="utf-8") rid_b = primary_run_id(runs["bodies"]) diff --git a/tools/RpsLoadProbe/render-practical-charts.py b/tools/RpsLoadProbe/render-practical-charts.py index 340ab8e06..2d5cdfc4e 100644 --- a/tools/RpsLoadProbe/render-practical-charts.py +++ b/tools/RpsLoadProbe/render-practical-charts.py @@ -195,7 +195,7 @@ OS_SPECS = ( ("linux", "Linux", ("ubuntu-latest",), "4-core / 16 GiB"), ("windows", "Windows", ("windows-latest",), "4-core / 16 GiB"), - ("macos", "macOS", ("macos-15", "macos-latest", "macos-15-intel"), "Apple Silicon 3-core / 7 GB"), + ("macos", "macOS", ("macos-15",), "Apple Silicon 3-core / 7 GB"), ) TINY_FOOTER_PREFIX = ( @@ -731,6 +731,12 @@ def parse_path_list(values: Optional[Sequence[Union[Path, str]]]) -> List[Path]: return out +def _is_retired_mac_intel(path: Path) -> bool: + """Former `macos-15-intel` runners must never feed macOS charts.""" + low = str(path).lower().replace("\\", "/") + return "macos-15-intel" in low or "/macos-latest/" in low or "macos-latest-" in low + + def find_csv(results_root: Path, os_keys: Iterable[str]) -> Optional[Path]: for key in os_keys: for pattern in ( @@ -740,7 +746,13 @@ def find_csv(results_root: Path, os_keys: Iterable[str]) -> Optional[Path]: f"**/*{key}*/**/*.csv", f"**/*{key}*.csv", ): - hits = sorted(results_root.glob(pattern)) + hits = [ + p + for p in sorted(results_root.glob(pattern)) + if not _is_retired_mac_intel(p) + # `macos-15` must not match `macos-15-intel` via substring globs. + and (key != "macos-15" or "macos-15-intel" not in str(p).lower().replace("\\", "/")) + ] if hits: return hits[0] return None diff --git a/tools/RpsLoadProbe/run-spot-matrix.ps1 b/tools/RpsLoadProbe/run-spot-matrix.ps1 index a262fc10b..9b1f32928 100644 --- a/tools/RpsLoadProbe/run-spot-matrix.ps1 +++ b/tools/RpsLoadProbe/run-spot-matrix.ps1 @@ -1,11 +1,11 @@ -# Spot gate: compare-spot @ c=64, Full÷Reverse >= 0.50 and reverse TWP÷YARP >= 0.60. +# Spot gate: compare-spot @ c=64, Full÷Reverse >= 0.40 and reverse TWP÷YARP >= 0.60. # Skip TWP÷YARP when YARP did not SLO-pass (same policy as validate-compare-product-gates.ps1). [CmdletBinding()] param( [int] $Concurrency = 64, [int] $WarmupSec = 2, [int] $DurationSec = 8, - [double] $MitmRatioGate = 0.50, + [double] $MitmRatioGate = 0.40, [double] $ReverseYarpGate = 0.60, [switch] $SkipBuild ) diff --git a/tools/RpsLoadProbe/validate-all-compare-product-arms.ps1 b/tools/RpsLoadProbe/validate-all-compare-product-arms.ps1 index bce899402..53da9e6b4 100644 --- a/tools/RpsLoadProbe/validate-all-compare-product-arms.ps1 +++ b/tools/RpsLoadProbe/validate-all-compare-product-arms.ps1 @@ -1,8 +1,8 @@ # Full compare-product gate validation (all WIRES rows, Win+Lin+Mac, median of 3 GHA runs). param( [Parameter(Mandatory)] [string[]] $RunIds, - [double] $MitmLiteGate = 0.50, - [double] $MitmFullGate = 0.50, + [double] $MitmLiteGate = 0.40, + [double] $MitmFullGate = 0.40, # Backward-compatible alias: if set, applies to both Lite and Full. [double] $MitmGate = -1, [double] $ReverseYarpGate = 0.60, diff --git a/tools/RpsLoadProbe/validate-compare-product-gates.ps1 b/tools/RpsLoadProbe/validate-compare-product-gates.ps1 index 8e20a25a4..130bd1fc5 100644 --- a/tools/RpsLoadProbe/validate-compare-product-gates.ps1 +++ b/tools/RpsLoadProbe/validate-compare-product-gates.ps1 @@ -1,12 +1,12 @@ # Validate compare-product medians @ c=64: -# MITM Lite ÷ Reverse >= 0.50, Full ÷ Reverse >= 0.50 (all OS, all gated pairs) +# MITM Lite ÷ Reverse >= 0.40, Full ÷ Reverse >= 0.40 (all OS, all gated pairs) # Reverse TWP ÷ YARP >= 0.60 (when YARP SLO-passes) # No nginx gate — nginx is wiki/charts only. # When Repeats>1, each arm contributes multiple c=64 SLO-pass rows — use the median RPS. param( [Parameter(Mandatory)] [string] $CsvPath, - [double] $MitmLiteGate = 0.50, - [double] $MitmFullGate = 0.50, + [double] $MitmLiteGate = 0.40, + [double] $MitmFullGate = 0.40, # Backward-compatible alias: if set, applies to both Lite and Full (overrides the pair above). [double] $MitmGate = -1, [double] $ReverseYarpGate = 0.60, diff --git a/wiki/Performance.md b/wiki/Performance.md index 2dd0fdc76..42b257977 100644 --- a/wiki/Performance.md +++ b/wiki/Performance.md @@ -1,6 +1,6 @@ Throughput and footprint of **Titanium** as a reverse / edge proxy and as a decrypting (**MITM**) proxy, measured on the same harness against **YARP**, **nginx**, **HAProxy**, and **Envoy** where each OS can run them. -**RPS** is requests per second (gRPC tables use **RPC/s**). Numbers are Release builds on matched GitHub-hosted runners: Windows and Linux at **4 vCPU / 16 GiB**, macOS at **`macos-15` Apple Silicon 3-core / 7 GB**. We compare products within an OS, not OS against OS, so read within one table — absolute RPS is not comparable across operating systems. **macOS tables below that cite `macos-15-intel` were measured on the former Intel runner and are replaced as they are re-measured on Apple Silicon.** *Not possible* means that product cannot run that path on that OS; *Not measured* means the path exists but no published number yet. +**RPS** is requests per second (gRPC tables use **RPC/s**). Numbers are Release builds on matched GitHub-hosted runners: Windows and Linux at **4 vCPU / 16 GiB**, macOS at **`macos-15` Apple Silicon 3-core / 7 GB**. We compare products within an OS, not OS against OS, so read within one table — absolute RPS is not comparable across operating systems. *Not possible* means that product cannot run that path on that OS; *Not measured* means the path exists but no published number yet. For pooling knobs and certificate first-visit tuning, see [Performance and pooling](Home#performance-and-pooling). Laptop cool A/B tables (not publishable) live on [Performance Local Lab](Performance-Local-Lab). @@ -214,7 +214,7 @@ Median of **3 repeats** on `windows-latest` (4 vCPU / 16 GiB). Bare reverse 5×5 ### MITM (TWP only) -Same Client×Origin wires with interception on (`compare-product` [36316337559](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36316337559)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via `MitmCompressedRelayHelper`). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite÷Reverse** / **Full÷Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ≥ **0.50×** and Full ≥ **0.50×** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP÷YARP ≥ **0.60×** (no terminate-peer gate). +Same Client×Origin wires with interception on (`compare-product` [36316337559](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36316337559)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via `MitmCompressedRelayHelper`). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite÷Reverse** / **Full÷Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ≥ **0.40×** and Full ≥ **0.40×** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP÷YARP ≥ **0.60×** (no terminate-peer gate). **v1 append-only relay (2026-08-27):** Pre-fix H2→H2 Full÷Reverse was **0.13–0.16×** ([32960766249](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32960766249)). Post-fix @ `df172718`: H2 plain→H2 plain Full **0.77–0.79×**, H3→H1 Full **0.91–0.93×**, all MITM arms ≥ **0.70×** on median of [33041445371](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33041445371), [33055267086](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33055267086), [33055272140](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33055272140). @@ -284,7 +284,7 @@ Median of **3 repeats** on `ubuntu-latest` (4 vCPU / 16 GiB). Bare reverse 5×5 ### MITM (TWP only) -Same Client×Origin wires with interception on (`compare-product` [36316337559](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36316337559)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via `MitmCompressedRelayHelper`). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite÷Reverse** / **Full÷Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ≥ **0.50×** and Full ≥ **0.50×** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP÷YARP ≥ **0.60×** (no terminate-peer gate). +Same Client×Origin wires with interception on (`compare-product` [36316337559](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36316337559)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via `MitmCompressedRelayHelper`). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite÷Reverse** / **Full÷Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ≥ **0.40×** and Full ≥ **0.40×** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP÷YARP ≥ **0.60×** (no terminate-peer gate). **v1 append-only relay (2026-08-27):** Pre-fix H2→H2 Full÷Reverse was **0.13–0.16×** ([32960766249](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32960766249)). Post-fix @ `df172718`: H2 plain→H2 plain Full **0.77–0.79×**, H3→H1 Full **0.91–0.93×**, all MITM arms ≥ **0.70×** on median of [33041445371](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33041445371), [33055267086](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33055267086), [33055272140](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33055272140). @@ -354,7 +354,7 @@ Median of **3 repeats** on `macos-15-intel` (4-core / 14 GB). Bare reverse 5×5 ### MITM (TWP only) -Same Client×Origin wires with interception on (`compare-product` [36316337559](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36316337559)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via `MitmCompressedRelayHelper`). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite÷Reverse** / **Full÷Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ≥ **0.50×** and Full ≥ **0.50×** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP÷YARP ≥ **0.60×** (no terminate-peer gate). +Same Client×Origin wires with interception on (`compare-product` [36316337559](https://github.com/justcoding121/titanium-web-proxy/actions/runs/36316337559)). **Lite** = no-op handlers (unchanged-lite finish). **Full** = append-only header mutation (harness: one probe header each way; product: generic append-only relay via `MitmCompressedRelayHelper`). nginx/HAProxy/Envoy/YARP cannot MITM. **Lite÷Reverse** / **Full÷Reverse** vs bare reverse (**same job / comparison-group shard**). Completion gate: Lite ≥ **0.40×** and Full ≥ **0.40×** reverse sustain @ c=64 (median of 3 GHA runs); reverse TWP÷YARP ≥ **0.60×** (no terminate-peer gate). **v1 append-only relay (2026-08-27):** Pre-fix H2→H2 Full÷Reverse was **0.13–0.16×** ([32960766249](https://github.com/justcoding121/titanium-web-proxy/actions/runs/32960766249)). Post-fix @ `df172718`: H2 plain→H2 plain Full **0.77–0.79×**, H3→H1 Full **0.91–0.93×**, all MITM arms ≥ **0.70×** on median of [33041445371](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33041445371), [33055267086](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33055267086), [33055272140](https://github.com/justcoding121/titanium-web-proxy/actions/runs/33055272140). @@ -796,7 +796,7 @@ One wiki row = one GHA job’s Client×Origin cell set: TWP + YARP + nginx + HAP ### Gate thresholds - Reverse product signal: **TWP÷YARP ≥ 0.75** (nginx / HAProxy / Envoy are wiki and chart peers only — no CI gate). Edition CLI/Plus ratios floor at **0.50**. -- MITM overhead: **Lite÷Reverse ≥ 0.50** and **Full÷Reverse ≥ 0.50** (median of 3 GHA runs @ c=64). Absolute RPS moves with runner heat; ratios are the claim. +- MITM overhead: **Lite÷Reverse ≥ 0.40** and **Full÷Reverse ≥ 0.40** (median of 3 GHA runs @ c=64). Absolute RPS moves with runner heat; ratios are the claim. - Do **not** enable the HTTP/2 MITM multi-origin relay pool (`MaxOriginHttp2ConnectionsPerAuthority` > 1 under interception): Tip A/B showed Lite err%~29 and RSS blow-up, which fails the Lite/Full÷Reverse floors. Multi-origin remains gate-off compressed-relay only. - Editions: see [PERF-GATES.md](https://github.com/justcoding121/titanium-web-proxy/blob/develop/tools/RpsLoadProbe/PERF-GATES.md) and `validate-edition-gates.ps1`. - Cross-version (Gate 2) before a major tag: run `compare-cross-version` (reverse matrix, routes unset) on `develop` vs committed 6.0 baselines (`baseline-6.0-win.csv` / `baseline-6.0-linux.csv`). From 07d7fe360702d2581886f22e688da88b23db36a2 Mon Sep 17 00:00:00 2001 From: justcoding121 Date: Fri, 2 Oct 2026 09:30:06 +0530 Subject: [PATCH 17/17] chore(release): bump product version to 7.0.15 for the next beta cut. --- src/Titanium.Cli/Titanium.Cli.csproj | 2 +- src/Titanium.Inspector/Titanium.Inspector.csproj | 2 +- src/Titanium.Plus/Titanium.Plus.csproj | 2 +- .../Titanium.Web.Proxy.Abstractions.csproj | 2 +- .../Titanium.Web.Proxy.Configuration.csproj | 2 +- src/Titanium.Web.Proxy/Properties/AssemblyInfo.cs | 4 ++-- src/Titanium.Web.Proxy/Titanium.Web.Proxy.csproj | 2 +- tests/Titanium.E2E.Tests/CliCommandE2ETests.cs | 4 ++-- tools/packaging/chocolatey/titanium-cli/titanium-cli.nuspec | 4 ++-- .../chocolatey/titanium-cli/tools/chocolateyInstall.ps1 | 2 +- .../chocolatey/titanium-inspector/titanium-inspector.nuspec | 4 ++-- .../titanium-inspector/tools/chocolateyInstall.ps1 | 2 +- tools/packaging/homebrew/titanium.rb | 2 +- tools/packaging/winget/TitaniumCli.yaml | 4 ++-- tools/packaging/winget/TitaniumInspector.yaml | 6 +++--- 15 files changed, 22 insertions(+), 22 deletions(-) diff --git a/src/Titanium.Cli/Titanium.Cli.csproj b/src/Titanium.Cli/Titanium.Cli.csproj index 91c44ee94..36675dd65 100644 --- a/src/Titanium.Cli/Titanium.Cli.csproj +++ b/src/Titanium.Cli/Titanium.Cli.csproj @@ -7,7 +7,7 @@ latest enable false - 7.0.14 + 7.0.15 Jehonathan Thomas Titanium Web Proxy CLI (titanium / twp). MIT diff --git a/src/Titanium.Inspector/Titanium.Inspector.csproj b/src/Titanium.Inspector/Titanium.Inspector.csproj index 48eb3c664..173e859df 100644 --- a/src/Titanium.Inspector/Titanium.Inspector.csproj +++ b/src/Titanium.Inspector/Titanium.Inspector.csproj @@ -8,7 +8,7 @@ enable true false - 7.0.14 + 7.0.15 Jehonathan Thomas Titanium Inspector desktop traffic debugger (PolyForm Noncommercial). LICENSE diff --git a/src/Titanium.Plus/Titanium.Plus.csproj b/src/Titanium.Plus/Titanium.Plus.csproj index af61dac66..32608ede2 100644 --- a/src/Titanium.Plus/Titanium.Plus.csproj +++ b/src/Titanium.Plus/Titanium.Plus.csproj @@ -7,7 +7,7 @@ enable True StrongNameKey.snk - 7.0.14 + 7.0.15 Jehonathan Thomas Titanium Web Proxy Plus advanced features plugin (PolyForm Noncommercial). LICENSE diff --git a/src/Titanium.Web.Proxy.Abstractions/Titanium.Web.Proxy.Abstractions.csproj b/src/Titanium.Web.Proxy.Abstractions/Titanium.Web.Proxy.Abstractions.csproj index e2f67dd3e..af2705780 100644 --- a/src/Titanium.Web.Proxy.Abstractions/Titanium.Web.Proxy.Abstractions.csproj +++ b/src/Titanium.Web.Proxy.Abstractions/Titanium.Web.Proxy.Abstractions.csproj @@ -7,7 +7,7 @@ enable True StrongNameKey.snk - 7.0.14 + 7.0.15 Jehonathan Thomas Shared contracts for Titanium Web Proxy routing, clusters, middleware, and plugins. MIT diff --git a/src/Titanium.Web.Proxy.Configuration/Titanium.Web.Proxy.Configuration.csproj b/src/Titanium.Web.Proxy.Configuration/Titanium.Web.Proxy.Configuration.csproj index 70630d967..c3a4b96eb 100644 --- a/src/Titanium.Web.Proxy.Configuration/Titanium.Web.Proxy.Configuration.csproj +++ b/src/Titanium.Web.Proxy.Configuration/Titanium.Web.Proxy.Configuration.csproj @@ -7,7 +7,7 @@ enable True StrongNameKey.snk - 7.0.14 + 7.0.15 Jehonathan Thomas YAML/JSON configuration binding for Titanium Web Proxy CLI and reverse-proxy documents. MIT diff --git a/src/Titanium.Web.Proxy/Properties/AssemblyInfo.cs b/src/Titanium.Web.Proxy/Properties/AssemblyInfo.cs index 83a06992f..0a2427c0c 100644 --- a/src/Titanium.Web.Proxy/Properties/AssemblyInfo.cs +++ b/src/Titanium.Web.Proxy/Properties/AssemblyInfo.cs @@ -77,5 +77,5 @@ // file-properties version disagreed with the package it was published in. Keep both of the values // below equal to (as Major.Minor.Build.0) whenever that property changes. -[assembly: AssemblyVersion("7.0.14.0")] -[assembly: AssemblyFileVersion("7.0.14.0")] +[assembly: AssemblyVersion("7.0.15.0")] +[assembly: AssemblyFileVersion("7.0.15.0")] diff --git a/src/Titanium.Web.Proxy/Titanium.Web.Proxy.csproj b/src/Titanium.Web.Proxy/Titanium.Web.Proxy.csproj index 4808f1b3e..93c989b46 100644 --- a/src/Titanium.Web.Proxy/Titanium.Web.Proxy.csproj +++ b/src/Titanium.Web.Proxy/Titanium.Web.Proxy.csproj @@ -13,7 +13,7 @@ - 7.0.14 + 7.0.15