How do you pass query string onOpen?
Following your MyChat example:

	public function onOpen(ConnectionInterface $conn) {
		//$query = $conn->WebSocket->request->getQuery();
		//echo $query;
		//echo $query->get('hello');
		print_r($conn);

		$this->clients->attach($conn);
	}

Printing the $conn->WebSocket only gives:

    Class Object
    (
        [closing] =>
    )

On my Java side I'm connecting with this url:

    WebSocketContainer container = ContainerProvider.getWebSocketContainer();
    container.connectToServer(this, new URI("ws://localhost:8080/chat?hello=dsfdsf"));

What am I missing? This is with the latest version of Ratchet.