/**
* Close a connection with an HTTP response
* @param Ratchet\ConnectionInterface
* @param int HTTP status code
*/
protected function close(ConnectionInterface $conn, $code = 400)
{
$response = new Response($code, array('Sec-WebSocket-Version' => $this->versioner->getSupportedVersionString(), 'X-Powered-By' => \Ratchet\VERSION));
$conn->send((string) $response);
$conn->close();
}
