Passport method isAuthenticated() is false even after successful authentication using Google Strategy - passport.js

Question

I'm new to MEAN stack and I'm trying to setup a simple social login using google passport strategy. I can successfully authenticate myself, but when calling a redirect on success, the middle ware function isLoggedIn keeps showing req.isAuthenticated() to be false. Below are code snippets. I saw that there were multiple posts on this issue but none of the answers seem to work for me. Kindly help me resolve this issue.
passport.js
var Auth = require('./auth.js');
var ubCust = require('../models/ubCust.js');
var FacebookStrategy = require('passport-facebook').Strategy;
var GoogleStrategy = require('passport-google-oauth').OAuth2Strategy;
//var FacebookStrategy = require('passport-facebook').Strategy;
module.exports= function(passport){
passport.serializeUser(function(user, done) {
done(null, user.id);
});
passport.deserializeUser(function(id, done) {
ubCust.findById(id,function(err,user){
done(err, user);
})
});
passport.use(new GoogleStrategy ({
clientID: Auth.googleAuth.clientID,
clientSecret: Auth.googleAuth.clientSecret,
callbackURL : Auth.googleAuth.callbackURL
},
function(token, refreshToken, profile, done) {
// Create or update user, call done() when complete...
process.nextTick(function(){
ubCust.findOne({'google.id' : profile.id}, function(err, user) {
if (err)
return done(err);
if(user)
return done(null,user);
else
{
var newUser = new ubCust;
newUser.google.id = profile.id;
newUser.google.token = token;
newUser.google.name = profile.displayName;
newUser.google.email = profile.emails[0].value;
newUser.save(function(err){
if (err)
throw err;
return done(null,newUser);
});
console.log(profile);
}
//done(null, profile, tokens);
}); //findOne
});//nextTick
}
));
};
route(authController.js)
module.exports = function(app,passport){
app.get('/api/getprofauth',isLoggedIn,function(req,res){
console.log('In getprofile authentication api');
//console.log('req.query :',req.query);
res.send(req.user);
});
app.get('/auth/google',
passport.authenticate('google',{scope: ['email','profile']})
);
app.get('/auth/google/callback',
passport.authenticate('google', {failureRedirect: '/'}),
function(req, res) {
console.log('auth success!! ',req.isAuthenticated(),req.user);
res.redirect('/api/getprofauth');
}
);
function isLoggedIn(req,res,next) {
// if user is authenticated in the session, carry on
if (req.isAuthenticated())
{
console.log('isAuthenticated Success');
return next();
}
else{
console.log('req.user',req.user,req.isAuthenticated());
console.log('isAuthenticated Failure');
res.redirect('/');
}
// if they aren't redirect them to the home page
}//isLoggedIn
}
app.js(server)
var express = require('express');
var app = express();
var mongoose = require('mongoose');
var config = require('./config');
var passport = require('passport');
var cookieParser = require('cookie-parser');
app.use(cookieParser());
var session = require('express-session');
app.use(session({
secret: 'keyboard cat',
resave: false,
saveUninitialized: true,
cookie: { secure: true }
}));
var authController = require('./controllers/authController.js');
var port = process.env.PORT||3000;
app.use(express.static(__dirname+ '/public'));
app.set('view engine','ejs');
app.get('/',function(req,res){
//redirecting request to home page '/' to index page
res.redirect('/index.htm');
});
mongoose.connect(config.getDBConnectionString());
app.use(passport.initialize());
app.use(passport.session());
var pp = require('./config/passport');
pp(passport);
apiController(app);
apibike(app);
appoController(app);
authController(app,passport);
app.listen(port);