Chat Server

var net = require('net');
var sockets = [];
net.createServer(function(socket) {
    sockets.push(socket);

    socket.on('data', function(data) {
        console.log(socket.remoteAddress + ' - ' + data);
        for(var i = 0; i < sockets.length; i++) {
            if (sockets[i] != socket)
                sockets[i].write(data); 
        }
    });

    socket.on('end', function() {
        sockets.splice(sockets.indexOf(socket), 1);
    })

}).listen(9000, 'localhost');

What's going on here?

• Line 2 creates an array for us to store a reference to the sockets
• Line 3 creates the socket server where we pass in our callback function
• Line 4 adds the new socket to our array
• Lines 5-11 writes the incoming data to each socket in our listen
• Lines 12-14 removes any dead sockets - why can we do this without locking?