tcp_server.js

#!/usr/bin/env node
// Start with nohup node log_server.js > output.log &
// Load the TCP Library
net = require('net');

// Keep track of the clients
var clients = [];

// Start a TCP Server
net.createServer(function (socket) {
    // Identify this client
    socket.name = socket.remoteAddress + ":" + socket.remotePort;
    // Put this new client in the list
    clients.push(socket);
    broadcast(socket.name + " connected\n");

    // Handle incoming messages from clients.
    socket.on('data', function (data) {
        broadcast(data);
    });

    // Remove the client from the list when it leaves
    socket.on('end', function () {
        clients.splice(clients.indexOf(socket), 1);
        broadcast(socket.name + " disconnected.\n");
    });

    function broadcast(message) {
        process.stdout.write(message)
    }

}).listen(5555);

// Put a friendly message on the terminal of the server.
console.log("TCP server running on 5555\n");