package.json

{
   "name": "express-sessions-tutorial",
   "version": "1.0.0",
   "description": "ExpressJS session tutorial",
   "main": "index.js",
   "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1",
      "watch": "nodemon server.js"
   },
   "keywords": [
      "express",
   "tutorial"
      ],
   "author": "Gleb Bahmutov <[email protected]>",
   "license": "MIT",
   "dependencies": {
      "cookie-parser": "1.3.5",
      "express": "^4.13.3",
      "express-session": "1.11.3",
      "morgan": "1.6.1",
      "session-file-store": "0.0.18"
   },
   "devDependencies": {
      "nodemon": "^1.11.0"
   }
}

server.js

var app = require('express')();
app.use(require('morgan')('dev'));
var session = require('express-session');
var FileStore = require('session-file-store')(session);
app.use(session({
   name: 'server-session-cookie-id',
   secret: 'my express secret',
   saveUninitialized: true,
   resave: true,
   store: new FileStore()
}));
app.use(function printSession(req, res, next) {
   console.log('req.session', req.session);
   return next();
});

app.get('/', function (req, res) {
   req.session.reload(function(err){ if(err) throw err;});
   res.send('hi there');
});
app.get('/toto',function(req,res){
   req.session.reload(function(err){
      if (err) throw (err);
      console.log(req.session.toto);
   });
   res.send('toto');
})
var server = app.listen(3000, function () {
   var host = server.address().address;
   var port = server.address().port;
   console.log('Example app listening at http://%s:%s', host, port);
});