Receive server pong by client ping

src/Devristo/Phpws/Client/WebSocket.php

@@ -141,6 +141,10 @@ public function open($timeOut=null)
                     $that->emit("message", array("message" => $message));
                 });
 
+                $transport->on("pong", function($frame) use($that){
+                    $that->emit("pong", array("frame" => $frame));
+                });
+
                 $transport->initiateHandshake($uri);
                 $that->state = WebSocket::STATE_HANDSHAKE_SENT;
             }, function($reason) use ($that, $deferred)

src/Devristo/Phpws/Protocol/WebSocketTransportHybi.php

@@ -173,9 +173,16 @@ protected function processControlFrame(WebSocketFrame $frame)
                 $frame = WebSocketFrame::create(WebSocketOpcode::PongFrame, $frame->getData());
                 $this->sendFrame($frame);
                 break;
+            case WebSocketOpcode::PongFrame :
+                $this->receivePongFrame($frame);
+                break;
         }
     }
 
+    public function receivePongFrame($frame) {
+        $this->emit("pong",  array($frame));
+    }
+
     public function sendString($msg)
     {
         try {