Connect to XMPP without username/password

[jackhong]

For the sake of in-band registration (XEP-0077), it will be good to be able to just connect to XMPP server without providing user credential, and without trying to authenticate as anonymous user.

Seems like once authenticated, even as anonymous user, a simple in-band register message will be treated as password change request ... (except logged in as an admin user...) ...sigh.

[cdwertmann]

Yes, we should be able to register a user before authenticating, if in-band registrations are open for everyone.

[benlangfeld]

I would welcome a pull request for such functionality, but since it is not something I need to use and it is not going to be quick to implement, I do not currently have time to put into it. Feel free to ask specific questions if you get stuck on implementing this functionality.