client.js

var http = require('http');

var countdown = 10;

function makeRequest(iteration) {
    var t = Date.now();
    http.request({
        host: 'www.google.com',
        path: '/'
    }, function(response){
        var str = '';

        response.on('error', function(err){
            console.error(err);
        });

        response.on('data', function(chunk){
            str += chunk;
        });

        response.on('end', function(){
            console.log(response.statusCode, str.length, Date.now() - t);
        });
    }).end(function(){
        iteration++;
        if(iteration <= countdown) {
            setTimeout(function(){
                makeRequest(iteration);
            }, 500);
        }
    });
}

makeRequest(1);