feat(http): Add ability to abort a request

Author: mathieucarbou

src/ESPAsyncWebServer.h

@@ -502,6 +502,15 @@ class AsyncWebServerRequest {
     return _paused;
   }
 
+  /**
+   * @brief Aborts the request and close the client. Mark the request as sent.
+   */
+  void abort();
+
+  bool isSent() const {
+    return _sent;
+  }
+
   /**
      * @brief Get the Request parameter by name
      *

src/WebRequest.cpp

@@ -727,6 +727,13 @@ AsyncWebServerRequestPtr AsyncWebServerRequest::pause() {
   return _this;
 }
 
+void AsyncWebServerRequest::abort() {
+  if (_sent) {
+    _sent = true;
+    _client->abort();
+  }
+}
+
 size_t AsyncWebServerRequest::headers() const {
   return _headers.size();
 }