1 var express = require('express');

     2 var cookie  = require('cookie-parser')

     3 var crypto = require('crypto');

     4 

     5 var app = express();

     6 app.use(cookie());

     7 

     8 app.get('/', function(req, res){

     9     var counter = req.cookies.counter || 0;

    10     res.cookie('counter', counter + 1);

    11     if (counter >= 5) {

    12 	res.write('You are a valued customer ' + 

    13 		  'visting the site ' + counter + ' times.');

    14     } else {

    15 	res.write('This is visit number '+ counter +'!');

    16     }

    17     res.end();

    18 });

    19 

    20 // starting the server

    21 app.listen(8000);

    22 console.log("Server running at http://127.0.0.1:8000/");