Getting a Error 400 about passport-google-oauth2

[toadkicker]

app.get('/auth/google',
        passport.authenticate('google', { scope: scope }),
            function(req, res) {
                /* do nothing as this request will be redirected to google for authentication */
            }
    );

[brannonh]

I'm getting this same error, and I can't find answers anywhere. I'm passing the desired scope to passport.authenticate(), as described by @toadkicker. Here is the line in my app:

api.get('/auth/google', passport.authenticate('google', { scope: auth.google.scope }));

If I change the desired scope, it is reflected on the deny/allow page, so it seems the scope is being sent. The error shows up after Allow is selected.

Any help would be greatly appreciated.

[brannonh]

Figured I should add the return route also.

api.get('/auth/google/return', passport.authenticate('google', { failureRedirect: '/hello/fail', successRedirect: '/hello/succeed' });

Seems this is actually where the error is occurring. If I comment out that line, the request comes back from Google to '/auth/google/return'. So, is Passport redirecting back to the Google error page?

[brannonh]

Forgot to come back here. Seems it was an issue with the way I was setting up my Restify server. I was able to fix this by adding the following code after initializing the server:

api.use(restify.plugins.queryParser({ mapParams: false }));

Once I added that line, I no longer saw the Google error, and the process passed back to my code.