Passport JS auth middleware issue

[asad-s]

I am implementing auth using passport js and database is mysql. My successRedirect route is '/main' and in the main route, I have added a middleware (isAuthenticated). But the issue is that, after entering valid credentials, I am not being redirected to '/main', instead, it just timeouts. I tried without adding middleware to '/main' route and it works fine.

var isAuthenticated = function(req, res, next) {
if (req.isAuthenticated()) {
return next;
}
res.redirect("/login")
}

// AUTH Implementation

app.use(session( {
secret: "asdnoifjasofijmaofmjkneknf",
resave: false,
saveUninitialized: false
}))

app.use(passport.initialize())
app.use(passport.session())

passport.use(new localStrategy(
function(username, password, done) {
connection.query("SELECT password FROM user" +
" WHERE email = ?", [username], function (err, results, fields) {
if (err) {
console.log(err);
}
else if (results.length === 0) {
done(null, false);
}
else {
console.log("Results");
console.log(results[0]);
hashedPassword = results[0].password;
bcrypt.compare(password, hashedPassword, function (err, response) {
if (response) {
console.log("True");
return done(null, true);
}
else {
console.log("False");
return done(null, false);
}
})
}
})
}
));

passport.serializeUser(function(ID, done) {
done(null, ID);
});

passport.deserializeUser(function(ID, done) {
connection.query("SELECT * FROM user WHERE userID = ?", [ID], function (err, results, fields) {
if (err) throw err;
else if (results.length === 0) done(null, false);
else {
done(null, results[0]);
}
})
done(null, ID);
});

app.post("/login", passport.authenticate('local', {
successRedirect: "/main",
failureRedirect: "/login"
}))

app.get("/main", isAuthenticated, function(req, res) {
res.send("In the main page");
})