Run multiple processes on same port
Hi there,

I'm trying to run Ratchet on the same port on multiple processes on the same server. However I'm getting `PHP Fatal error:  Uncaught RuntimeException: Failed to listen on "tcp://0.0.0.0:8443": Address already in use in /opt/vendor/react/socket/src/TcpServer.php:164`

In ReactPHP itself I would solve this doing:
`new SocketServer('0.0.0.0:8080', $this->loop, ['so_reuseport' => true ]);` to reuse the port.

How would I have to adjust the following code to make this happen?

`$ratchetApp = new \Ratchet\App($config['app']['ws']['host'], 8443, '0.0.0.0', $loop);`

Would love to hear!

Thanks