How to Get TCP Socket Id When it's connect to server

Question

My question is, How to Get TCP Socket Id When it's connect to server.

I have code like this,

const net = require('net');

const server = net.createServer();
server.listen(port, host, async() => {
    console.log('Server is running on port 6633');
});

server.on('connection', async function(sock) {

   console.log('sockId: ',sock.id); // It's give me undefined

}

So, How to Get Socket Id in TCP Connection in NodeJS.

Answer 1

for my own particular need when addressing this, I just created a map with some user identifier and the websocket itself.

otherwise you can use the request header req.headers['sec-websocket-key']

let socketMap = new Map()
server.on('connection', async function(sock, req) {
   console.log('sockId: ',sock.id); // It's give me undefined
   socketMap.set(req.headers['sec-websocket-key'], sock)
}