Node.js http create server

var http = require("http");
console.log("Starting...");
var host = "127.0.0.1";
var port = 3003;//from w ww.j  a v a2s  .  c o  m
var server = http.createServer( function (request, response) {
  console.log("Got a request: " + request.url);
  response.writeHead(200, {"Content-type": "text/plain"});
  response.end("Hello! I'm a Node.JS server.");
});

server.listen(port, host, function () {
  console.log("Listening...");
});