GET /as/authorization.oauth2?response_type=token
     &client_id=example-client
     &state=XzZaJlcwYew1u0QBrRv_Gw
     &redirect_uri=https%3A%2F%2Fclient.example.org%2Fcb
     &resource=https%3A%2F%2Fapi.example.com%2Fapp%2F HTTP/1.1
  Host: authorization-server.example.com