This app is base on laravel-websockets and trying to act like pusher server for pusher clients.
As you may know, Pusher is a commercial service for serving sockets and realtime connections for apps, so we can use this instead!

Just type php artisan webscokets:serve
It will listen on 6001, but you can change the port by specifying the --port switch.
If you faced any problems, you may fire an issue.

It is open-sourced software licensed under the MIT license.