How to uniquely identify a socket with Node.js

Question

TLDR; How to identify sockets in event based programming model.

I am just starting up with node.js , in the past i have done most of my coding part in C++ and PHP s

Answer 1

Timothy's approach is good, the only thing to mention - Math.random() may cause id's duplication. So the chance it will generate the same random number is really tiny, but it could happen. So I'd recommend you to use dylang's module - shortid:

var shortid = require('shortid');
var server = net.createServer();

server.on('connection', function(conn) {
  conn.id = shortid.generate();
  conn.on('data', function(data) {
    conn.write('ID: '+conn.id);
  });
});
server.listen(3000);

So in that case you can be sure that no id duplications will occur.