How best to control this web sockets? Will ordinary Java and Java Script be sufficient? We have to program for ourselves from scratch yes or no, since I found few topics covering web sockets for example Coursera only less than 5, Codeacademy perhaps 20, same for Udemy.

There are many example on the web if you google.

On client-side (browser) javascript, it's quite easy. Just look up some tutorial on how to do this. It's just plain JS.

On server side, you can implement it in whatever language you want (Java if you so like), but you'll want to use the appropriate libraries out there to implement the ws server, since writing a websocket & http server from scratch isn't a trivial thing.

This post has been edited by techm: Sep 23 2022, 08:19 PM

Use socket.io.

Underlaying, web socket is just HTTP but keep the port opening for 2 way communication

HTTP is only used to establish the connection, underlying it is TCP, not HTTP.