old_contents: var http = require('http');
  var requestListener = function (req, res) {
    req.writeHead(200, {'Content-Type': 'text/html; charset=utf-8'});
    res.end('Teste de Webserver\n');
  }
  
  var server = http.createServer(requestListener);
  server.listen(3000);
new_contents: var http = require('http');
  var requestListener = function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/html; charset=utf-8'});
    res.end('Teste de Webserver\n');
  }
  
  var server = http.createServer(requestListener);
  server.listen(3000);
  
subject: Update 03.js