Simple Chat Server Nodejs chat server that serves two static files (index.html and jquery.js), allowing clients to communicate via a basic web interface. Use npm install socket.io node chat-server.js

chat-server.js

// Global variables
var   app = require('http').createServer(handler)
   ,   io = require('socket.io').listen(app)
   ,   fs = require('fs')
   ,  url = require('url')
   , port = 1337

// initialize http server
app.listen(port);
console.log("Listening on port", port)

// define http handler
function handler (req, res) {
  // grab requeseted url path
  var pathname = url.parse(req.url).pathname;
  
  // index
  if (pathname == "/") {
    fs.readFile(__dirname + '/index.html',
      function (err, data) {
        if (err) {
          res.writeHead(500);
          return res.end('Error loading index.html');
        }
        res.writeHead(200);
        res.end(data);
      }
    );
  }

  // jquery
  else if (pathname == "/jquery.js") {
    fs.readFile(__dirname + '/jquery.js',
      function (err, data) {
        if (err) {
          res.writeHead(500);
          return res.end('Error loading jquery.js');
        }
        res.writeHead(200);
        res.end(data);
      }
    );
  }
}

// listen for socket.io requests
io.sockets.on('connection', function (socket) {
  socket.emit('recieve', { hello: 'world' });
  socket.on('send', function (data) {
    // disable xss
    for (var i in data)
      data[i] = data[i].replace(/[<>/]/g, "");
    // send message to clients
    io.sockets.emit('receive', data);
  });
});