El Tuesday 01 April 2008 13:09:17 Pascal Maugeri escribió: > Hi > > I've seen that my VoIP client X-Lite is sending NOTIFY request to publish > changes in its availability. I was expecting to see PUBLISH request instead > of NOTIFY ... > > Is it so that one could use NOTIFY instead of PUBLISH request ?
No, PUBLISH is to inform a presence server about our state. NOTIFY is what a presence server sends to a subscriber to notify the state of a subscribed user. XLite allos two way for presence: - Client to Client: In this way (the default one !!!!) XLite is a presence client and PRESENCE SERVER (so it manages also NOTIFY's as presence server). In this way there is no need of a presence server. - Presence Agent: This mode expects that the SIP proxy allows SUBSCRIBE and PUBLISH events, so the proxy is also a presence server (or teh proxy forward those messages to a presence server). In this way the presence server sends NOTIFY to the clients and receive PUBLISH and SUBSCRIBE from them. > I'm curious to know where this is defined in standard. Please tell me if > there is any RFC or reference document talking about this. There are a lot: http://tools.ietf.org/html/rfc3265 http://tools.ietf.org/html/rfc3856 http://tools.ietf.org/html/rfc3863 Regards. -- Iñaki Baz Castillo [EMAIL PROTECTED] _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
