var sessionStore = new RedisStore();

  this.app.use(session({
                key: 'express.sid',
                store: sessionStore,
                secret: 'mysecret'
            }));
        ///this.app.use(session({secret:'MySecret'}));
        this.app.use(passport.initialize());
        this.app.use(passport.session());

        this.app.use('/login', (req, res) => {
            res.sendFile((path.join(__dirname, '/login.html')));
        });

        this.app.use('/errorPage', (req, res) => {
            res.sendFile((path.join(__dirname, '/errorPage.html')));
        });
 this.app.get('/auth/google', passport.authenticate('google', {
            scope: [
                //'profile','email'
                'https://www.googleapis.com/auth/plus.login',
                'https://www.googleapis.com/auth/plus.profile.emails.read'
            ]
        }));

        this.app.get('/auth/google/callback',
            passport.authenticate('google', {
                successRedirect: '/',
                failureRedirect: '/login'
            })
        );
        this.app.use(ensureAuthenticated)
        // Static assets
        this.app.use('/', serveStatic(this.root));
        // Set app to use router as the default route
        this.app.use('*', router);

        function ensureAuthenticated(req, res, next) {
            if (req.isAuthenticated()) {
                if (!req.user._id)
                    res.redirect('/errorPage');
                else
                    return next();
            }
            else
                res.redirect('/auth/google');
        }
// Get socket.io handle
    this.io = socketIo(this.server, {
        transports: ['websocket']
    });

    this.io.use(passportSocketIo.authorize({
        cookieParser: require('cookie-parser'), //optional your cookie-parser middleware function. Defaults to require('cookie-parser')
        key: 'express.sid',       //make sure is the same as in your session settings in app.js
        secret: 'mysecret',      //make sure is the same as in your session settings in app.js
        store: sessionStore,        //you need to use the same sessionStore you defined in the app.use(session({... in app.js
        success: onAuthorizeSuccess,  // *optional* callback on success
        fail: onAuthorizeFail,     // *optional* callback on fail/error
    }));

    function onAuthorizeSuccess(data, accept) {
        console.log('successful connection to socket.io');
        accept(); //Let the user through
    }

    function onAuthorizeFail(data, message, error, accept) {
        if (error) accept(new Error(message));
        console.log('failed connection to socket.io:', message);
        accept(null, false);
    }