Hi, I am a newbie with Passport.js. While using Local strategy, I have trouble with isAuthenticated(). It always returns false even after login successfully.
Below is my code, plz help me!!!
Thank you guys so much 
const express = require('express');
const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;
const mongo = require('mongodb').MongoClient;
const bodyParser = require('body-parser');
const session = require('express-session');
const app = express();
app.set('view engine', 'ejs');
app.set('views', 'views');
app.use(session({
secret: 'mysecret',
cookie: {
maxAge: 60000
}
}));
app.use(bodyParser.urlencoded({ extended: true }));
app.use(passport.initialize());
app.use(passport.session());
app.get('/login', (req, res) => {res.render('new');});
app.post('/login', passport.authenticate('local',
{failureRedirect: '/fail', successRedirect: '/succeed'}));
app.get('/succeed', (req, res) => {
console.log(req.isAuthenticated());
res.send("Dang nhap thanh cong");
});
app.get('/private', (req, res) => {
console.log(req.isAuthenticated());
if (req.isAuthenticated()) {
res.send("Welcome");
}
res.send("Ban chua dang nhap");
});
passport.use(new LocalStrategy(
(username, password, done) => {
mongo.connect('mongodb://localhost:27017/local', (err, db) => {
if (err) throw err;
db.collection('users').findOne({name: username}, (err, user) => {
if (err) { return done(err); }
if (!user) {
return done(null, false);
}
return done(null, user)
});
});
}
));
passport.serializeUser((user, done) => {
done(null, user._id)
});
passport.deserializeUser((id, done) => {
mongo.connect('mongodb://localhost:27017/local', (err, db) => {
if (err) throw err;
db.collection('users').findOne({ _id: id }, (err, user) => {
if (err) { return done(err); }
if (!user) {
return done(null, false);
}
return done(null, user)
});
});
})
app.listen(3000);