dummyserver.js

var http = require('http');

var hello = function(req, res) {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.write('Hello! <br />');
  res.write('<br />' +
            'URL:' + req.url + '<br />' +
            'Method:' + req.method + '<br />');
};

var send404 = function(req, res) {
  res.writeHead(404, {'Content-Type': 'text/html'});
  res.write('Ooops! No resource found at this URL!');
};

http.createServer(function(req, res) {
  if (req.url.indexOf('/hello') != -1) {
    hello(req, res);
  } else {
    send404(req, res);
  }
  res.end();
}).listen(4321, '127.0.0.1');
console.log('Server running at http://127.0.0.1:4321/');