i tried to use a third party token with the sync_gateway facebook register flow and could not make it work, it fails when registering the token at _facebook_token endpoint.
00:06:13.955189 HTTP: #003: POST /todos/_facebook
00:06:14.207648 HTTP: #003: --> 401 Facebook verification server status 400
i have tried to POST to _facebook, as i imagine the fb's redirect after the login.
and only then try to register at _facebook_token, but i got
Router unable to route request to do_POST_facebook