Hello world with delay node.js

server.js

var http = require('http');

var server = http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.write('Hello\n');
  setTimeout(function() {
    res.end('World\n');
  }, 1000);
});

server.listen(process.env.C9_PORT, "0.0.0.0");
console.log('Server running!');