diff --git a/src/main/java/io/github/misode/packtest/dummy/DummyClientConnection.java b/src/main/java/io/github/misode/packtest/dummy/DummyClientConnection.java
index 49bbe20..afddae3 100644
--- a/src/main/java/io/github/misode/packtest/dummy/DummyClientConnection.java
+++ b/src/main/java/io/github/misode/packtest/dummy/DummyClientConnection.java
@@ -1,17 +1,36 @@
 package io.github.misode.packtest.dummy;
 
+import io.netty.channel.ChannelFutureListener;
 import net.minecraft.network.Connection;
 import net.minecraft.network.PacketListener;
 import net.minecraft.network.ProtocolInfo;
+import net.minecraft.network.protocol.Packet;
 import net.minecraft.network.protocol.PacketFlow;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
+import java.util.function.Consumer;
+
+/**
+ * A connection without a channel. Vanilla queues everything sent to a disconnected
+ * connection until it comes up, which never happens for a dummy, so outbound traffic is
+ * discarded instead of being retained forever.
+ */
 public class DummyClientConnection extends Connection {
 
     public DummyClientConnection(PacketFlow flow) {
         super(flow);
     }
 
+    @Override
+    public void send(@NotNull Packet<?> packet, @Nullable ChannelFutureListener listener, boolean flush) {}
+
+    @Override
+    public void runOnceConnected(@NotNull Consumer<Connection> action) {}
+
+    @Override
+    public void flushChannel() {}
+
     @Override
     public void setReadOnly() {}