Add queueLength() to AsyncWebClient

Author: Aircoookie

src/AsyncWebSocket.cpp

@@ -549,6 +549,11 @@ bool AsyncWebSocketClient::queueIsFull(){
   return false;
 }
 
+//Added by Aircoookie for WLED
+uint16_t AsyncWebSocketClient::queueLength(){
+  return _messageQueue.length();
+}
+
 void AsyncWebSocketClient::_queueMessage(AsyncWebSocketMessage *dataMessage){
   if(dataMessage == NULL)
     return;

src/AsyncWebSocket.h

@@ -202,6 +202,7 @@ class AsyncWebSocketClient {
     //data packets
     void message(AsyncWebSocketMessage *message){ _queueMessage(message); }
     bool queueIsFull();
+    uint16_t queueLength();
 
     size_t printf(const char *format, ...)  __attribute__ ((format (printf, 2, 3)));
 #ifndef ESP32