We need to do lots of real-time communication like sending messages when someone request t to join an ongoing call then in real-time show the request to admin and if the admin accepted, then let the user join the call, change the user role from the audience to speaker so that they can also speak. We are planning to use WebSocket for it, but I think using some tools that already work on WebSocket is better so that we can focus on other things rather than implementing and managing WebSocket.