webSocketServer node.js how to differentiate clients

Question

I am trying to use sockets with node.js, I succeded but I don\'t know how to differentiate clients in my code. The part concerning sockets is this:

var WebSo         


        

Answer 1

You can check the connection object. It has built-in identification for every connected client; you can find it here:

let id=ws._ultron.id;
console.log(id);

Answer 2

By clients if you mean the open connections, then you can use ws.upgradeReq.headers['sec-websocket-key'] as the identifier. And keep all socket objects in an array.

But if you want to identify your user then you'll need to add user specific data to socket object.

Answer 3

One possible solution here could be appending the deviceId in front of the user id, so we get to separate multiple users with same user id but on different devices.

ws://xxxxxxx:9000/userID/<<deviceId>>

Answer 4

I'm using fd from the ws object. It should be unique per client.

var clientID = ws._socket._handle.fd;

I get a different number when I open a new browser tab.

The first ws had 11, the next had 12.