GoogleConntectionFactory can't create connection - spring

Question

G'day everybody!
I've got error like this:
WARN/DefaultRequestDirector(22739): Authentication error: Unable to respond to any of
these challenges: {authsub=WWW-Authenticate: AuthSub
realm="https://www.google.com/accounts/AuthSubRequest" allowed-
scopes="https://www.googleapis.com/auth/userinfo.email,
https://www.googleapis.com/auth/userinfo.profile,
https://www.googleapis.com/auth/userinfo.id"}
It's happend when I wanna get connection:
AccessGrant accessGrant = new AccessGrant(accessToken);
Connection<Google> connection = connectionFactory.createConnection(accessGrant);
As the result, I catch exception as Auth 401.
Did any one that problem befor?

Answer 1

It looks like you are using the old AuthSub authentication when you should be using OAuth2 authentication. I suggest you take a look at the example application, specifically see in SocialConfig how to create ProviderSignInController which is used for sign in.

Answer 2

I've found why it was happened. The problem was in scope. I set only https://www.googleapis.com/auth/plus.me scope. It wasn't enough for create connection.
As result, I had the next message:
WARN/DefaultRequestDirector(22739): Authentication error: Unable to respond to any of
these challenges: {authsub=WWW-Authenticate: AuthSub
realm="https://www.google.com/accounts/AuthSubRequest" allowed-
scopes="https://www.googleapis.com/auth/userinfo.email,
https://www.googleapis.com/auth/userinfo.profile,
https://www.googleapis.com/auth/userinfo.id"}
As you can see google oauth2 asks for https://www.googleapis.com/auth/userinfo.email, https://www.googleapis.com/auth/userinfo.profile, https://www.googleapis.com/auth/userinfo.id scopes.
After I had added this scopes and I got a new error likes "invalid_scope".
Problem was in connection url.
I created connection url as:
connectionFactory.getOAuthOperations().buildAuthorizeUrl(GrantType.AUTHORIZATION_CODE, params);
where params:
OAuth2Parameters params = new OAuth2Parameters();
params.setRedirectUri(redirectUri);
params.setScope("https://www.googleapis.com/auth/userinfo.email+" + "https://www.googleapis.com/auth/userinfo.profile+" + "https://www.googleapis.com/auth/userinfo.id+" +
"https://www.googleapis.com/auth/plus.me");
In this case, symbol "+" was decoded to another one and Google oauth2 api couldn't recognize scope set.
I hope this solution will help somebody in future.