bench.js

var http = require('http');
var body = new Buffer("Hello World\n");
var headers = {
  "Content-Type": "text/plain",
  "Content-Length": body.length//Buffer.byteLength(body)
};
var server = http.createServer(function (req, res) {
  res.writeHead(200, headers);
  res.end(body);
});
server.listen(8080, function () {
  var port = server.address().port;
  console.log("bench server listening on http://127.0.0.1:%s/", port);
});