(Multiplayer Topic) How do i start on a WebSocket project?

Hi, im gonna start working on a GDevelop multiplayer game with the WebSocket extension. but i already tried this with the default WebSocket port, it worked, but it never connects or goes to the main game. how do i fix this? Thanks.

Do have setted up your own server(WEB-Socket)?

No, i haven’t, i use browser versions of python, but none of them work for some reason?