Allow override rewrite match (me-no-dev#391)

Author: WallyCZ

src/ESPAsyncWebServer.h

@@ -303,11 +303,13 @@ class AsyncWebRewrite {
         _toUrl = _toUrl.substring(0, index);
       }
     }
+    virtual ~AsyncWebRewrite(){}
     AsyncWebRewrite& setFilter(ArRequestFilterFunction fn) { _filter = fn; return *this; }
     bool filter(AsyncWebServerRequest *request) const { return _filter == NULL || _filter(request); }
     const String& from(void) const { return _from; }
     const String& toUrl(void) const { return _toUrl; }
     const String& params(void) const { return _params; }
+    virtual bool match(AsyncWebServerRequest *request) { return from() == request->url() && filter(request); }
 };
 
 /*

src/WebServer.cpp

@@ -104,7 +104,7 @@ void AsyncWebServer::_handleDisconnect(AsyncWebServerRequest *request){
 
 void AsyncWebServer::_rewriteRequest(AsyncWebServerRequest *request){
   for(const auto& r: _rewrites){
-    if (r->from() == request->_url && r->filter(request)){
+    if (r->match(request)){
       request->_url = r->toUrl();
       request->_addGetParams(r->params());
     }