Passport AngularJS ExpressJS: Origin null is not allowed by Access-Control-Allow-Origin

Question

When I'm trying to use $http module of angular.js for authorizing twitter app I always get:

XMLHttpRequest cannot load https://api.twitter.com/oauth/authenticate?oauth_token=something. Origin null is not allowed by Access-Control-Allow-Origin. 

Client Code:

$http({
   method: 'GET',
   headers: { "Content-Type": undefined },
   url: '/oauth/twitter'
});

Server Code:

app.configure(function () {
   app.use(express.cookieParser());
   app.use(express.cookieSession({ secret: 'tobo!', cookie: { maxAge: 3600 }}));

   app.use(express.session({secret: 'secret'}));
   app.use(passport.initialize());
   app.use(passport.session());
});

app.all('*', function(req, res, next) {
   res.header("Access-Control-Allow-Origin", "*");
   res.header("Access-Control-Allow-Credentials", true);
   res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');
   res.header("Access-Control-Allow-Headers",
    'Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept');
   next();
});

app.get('/oauth/twitter', passport.authenticate('twitter'), function (req, res) {
// The request will be redirected to Twitter for authentication, so this
// function will not be called.
console.log('ouath/twitter')
});

app.get('/oauth/twitter/callback', passport.authenticate('twitter', { successRedirect:  '/', failureRedirect: '/login' }));

But it works ok if I use a hyperlink with oauth/twitter address. I don't know what is the problem. Most said that origin is not allowed, but '*' should allow every address to be connected to server.

Answer 1

I had the same problem and the only solution that I have found is to use an hyperlink (as you say in your post). I think that you can't use a ajax request for security reason. However using an hyperlink worked for me and I can authorize my users.

Why don't you use an hyperlink? Is there some problem?