Im development [3]-XMPP protocol namespace

Jabber: IQ: Private -- private data storage, used for private setting information of local users, such as user remarks.

Jabber: IQ: Conference-a general meeting used for information sharing among multiple users
Jabber: X: Encrypted-encrypted message, used to send encrypted messages
Jabber: X: expire -- message termination
Jabber: IQ: Time -- client time
Jabber: IQ: Auth-Simple user authentication, which is generally used for authentication between servers or between servers and clients.
Jabber: X: roster-internal roster
Jabber: X: signed -- marked online status
Jabber: IQ: search-user database query, used to send query requests to the server
Jabber: IQ: Register -- registration request, used for User Registration Information
Jabber: X: IQ: roster -- roster management
Jabber: X: conference -- meeting invitation, used to send a meeting notification to participants
Jabber: X: event -- message event
VCard-temp-temporary vCard, used to set the user's profile picture and nickname