Getting “Error: redirect_uri_mismatch” with google_oauth2

Question

The URL's seem right (Last updated them yesterday):

The files too:

omniauth.rb:

provider :google_oauth2, 'MY_CLIENT_ID.apps.googleusercontent.com', 'MY_CLIENT_SECRET',
           :scope => 'https://mail.google.com/mail/feed/atom/'

Error: redirect_uri_mismatch
The redirect URI in the request: http://localhost:3000/auth/google_oauth2/callback did not match a registered redirect URI

header.html.erb

<li><%= link_to "Sign in with Google", "auth/google_oauth2" %></li>

routes.rb:

match '/auth/:provider/callback', to: 'sessions#omniauth_create'

But I'm getting this:

> Error: redirect_uri_mismatch The redirect URI in the request:
> http://localhost:3000/auth/google_oauth2/callback did not match a
> registered redirect URI

(Twitter and Facebook OmniAuth are working perfectly)

Not sure what is the problem. Any usggestions to fix this?

EDIT

I changed the URI to http...:

But still getting the same error.

Answer 1

It looks like the request is hitting http://localhost:3000/auth/google_oauth2/callback, but your specified redirect URI matching the similar pattern is for https. Adding http://localhost:3000/auth/google_oauth2/callback to your list of redirects may potentially solve that issue.

EDIT: Another potential fix is including a trailing / in the corresponding redirect URIs, which appeared to work in this case.

Answer 2

There's a relatively fresh issue with omniauth-oauth2 gem version 1.4 https://github.com/intridea/omniauth-oauth2/issues/81#issuecomment-151038559

Temporary fix is to downgrade that gem explicitly in the Gemfile

gem 'omniauth-oauth2', '~> 1.3.1'

Answer 3

foo

vi config/initializers/omniauth.rb OmniAuth.config.full_host = 'https://localhost:3000' Rails.application.config.middleware.use OmniAuth::Builder do provider :google_oauth2, 'google_client_id', 'google_client_secret' end

Answer 4

Sharing a very simple copy-paste solution that worked for me.

I copied whatever I was specifying in my code as redirectUri i.e. "redirect_uri": "http://127.0.0.1:3001/" and pasted the value of this key inside the Google settings that ask for Authorized redirect URIs. This way I'm ensured that both the parameters are same.

If the url was computed, I would console.log() it and copy it from the console window before pasting it in for google settings.

Answer 5

I tried all of the above but didn't work for me. In the end noticed in my error message my call back was slightly different. I had a users between localhost:3000 and auth. Not really sure why.

http://localhost:3000/users/auth/google_oauth2/callback

Changed it, waited 30 mins and it worked.