Passport w/node.js Google error

Question

I'm attempting to use passport with an express/node.js app. For some reason I can't authenticate using google. Google gives the following error:

Error: invalid_request
Error in parsing the OpenID auth request.

Code:

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

passport.deserializeUser(function(user, done) {
  done(null, user);
});

var GoogleStrategy = require('passport-google').Strategy;
var UserModel = require('./models/usermodel');

passport.use(new GoogleStrategy({
    returnURL: 'http://localhost:3000/auth/google/return',
    realm: 'http:/localhost:3000'
  },
  function(identifier, profile, done) {
    profile.email = profile.emails[0].value;
    UserModel.findOneAndUpdate({email:profile.email}, {$set:profile, $inc:{logins:1}}, {upsert:true}, done);
  }
));

Answer 1

If you don't otherwise have reason to use OpenID, I highly recommend switching to OAuth 2.0, which is implemented in passport-google-oauth.

Google seems to be recommending that as their preferred authentication solution, and their OpenID implementation seems to receive less attention and spurious errors occur.