Handle the OAuth provider callback via GET (query parameters). Redirects to the client application with a challenge token or error.
The OAuth provider identifier
"google"
The authorization code from the OAuth provider
"4/0AX4XfWh..."
The state parameter for CSRF protection
"st_01jqebhswje1ka1z7ahr9rfsgt"
Error code from the OAuth provider
"access_denied"
Error description from the OAuth provider
"The user denied access"
Redirect to client application with challenge_token or error query parameters