Arguments passed with openid.mode=id_res incomplete?

[Grant Monroe]

Correct me if I'm wrong, but it seems that the arguments passed along
with openid.mode=id_res are insufficient. As far as I can tell, the
consumer has no way of determining which openid server the GET request
relates too. I don't think we can assume the assoc_handle uniquely
identifies a single server. How is the consumer to determine which
server the request is for?

Grant Monroe