$this->markTestSkipped('Expected host to refuse connection, but got error ' . $errno . ': ' . $errstr);
}
$connecting = stream_socket_client('127.0.0.1:1', $errno, $errstr, 0, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT);
$loop = $this->loop;
$timeout = $loop->addTimer(10.0, function () use ($connecting, $loop) {