I'm trying to move to using Twisted Cred and bring the perspective into perspective broker for Nessie. It's turning out to be a rather large refactoring. Because of that, I created a tag to the pre-cred code. Originally, information was shared in both directions through a single root peer object. Now, with the advent of avatars and perspectives, it's looking like information should really only flow in one direction. That is, from the authenticator to the authenticated. Or in other words, information should only flow from the server to the client. For the server to get information from the client, it needs to authenticate with the client. Thus, the server becomes a client and the client a server. (Sorry, I couldn't resist making that sound more complicated than it really is.) I think this will probably make things more secure. However, I think it's also likely that, in many cases, the server will not want to share information with an authenticated client unless the c...