How to send message to specific user from Node.js socket server?

Question

Node.js

I'm using websockets to create a server socket in Node.js

I've read the documentation but one question remains:

How to send a message to a specific connected user? Now all samples are about the general message.

As far as I know I need to create a channel with a unique name for each user on the server and then on the client link them to receive messages?

Answer 1

And how do you manage to send a websocket message NOT to a specific user? The protocol is designed as a point-to-point exchange. You only need to learn how to distinguish between these users.
To do this, when establishing a connection, you need to receive some data for authorization (for example, a token or session ID), and keep a connection pool in which, if necessary, you can find the connection of the desired user.

Answer 2

Since you have the SOCKET.IO tag in your question , it is obvious that you have it in Node.js and is spinning,
respectively, you should refer to the official documentation , and in short:
socket.emit('hello', 'world');