basic multi-user chat on nodejs

chat.js

net = require('net');

var sockets = []; //connected people

// net.createServer == net.Server
var s = net.Server(function(socket) {
    sockets.push(socket);
    
    socket.on('data', function(d) {
        for (var i = 0; i < sockets.length; i++){
            if (sockets[i] == socket) continue;
            sockets[i].write(d);
        }
    });
    
    socket.on('end', function(d) {
        var i = sockets.indexOf(socket);
        sockets.splice(i, 1);
    })
});

s.listen('8999');