I use angular client side (TS) and Django server side (PY).

Unfortunately despite what I find on the internet, I can't send a message to a SPECIFIC client from the server. Socket.io doesn't exist in PY, I've seen the websockets but that only talks about sending a message to ALL clients in a group. But if I want to send a message only to a client B I don't see how to do it.

Please help me, and guide me on the solution to use

PS: I'm starting with the PY backend, be indulgent.

Thank you.