Node.js fs read file for http server

var fs = require('fs');
var fileName = "hello.html";

var http = require('http');
var server = http.createServer(function (request, response) {
  console.log("HTTP works!");
  fs.readFile(fileName, "utf8", function(err, data){
    if (err){/*from  w  ww. j  a v  a 2 s .c o m*/
      console.log('Could not find or open file for reading\n');
    } else {
      response.writeHead(200, {"Content-Type": "text/html"});
      response.end(data);
    }
  })
});
server.listen(8080);
console.log('Server is listened port:8080');