client.js

var http = require('http');
var client = http.createClient(8124);
var request;

for (var i = 0; i < 10; i++) {
  request = client.request('GET', '/', {'host': 'localhost'});
  request.end();
  console.log("Request sent");
}

server.js

var http = require('http');

http.createServer(function (request, response) {
  console.log("Request received");
  setTimeout(function() {
    console.log("Response sent");
    response.writeHead(200, {'Content-Type': 'text/plain'});
    response.end('Hello World\n');
  }, 1000);
}).listen(8124);