Hi, Well, if we say that UPDATEs cannot be used in confirmed dialogs you wouldn't be able to use them within re-INVITEs either, would you? :) But, a recommendation of course doesn't prevent exceptions. Also, AFAIK at least in OMA UPDATEs are sometimes used because they DO want an answer immediately. Regards, Christer > -----Original Message----- > From: sipping-bounces@xxxxxxxx > [mailto:sipping-bounces@xxxxxxxx] On Behalf Of Sumit Garg > Sent: 18. helmikuuta 2009 16:29 > To: sipping@xxxxxxxx > Subject: Re: About "rollback of re-Invite" > > Actually, 3311 does recommend not using UPDATEs in confirmed > state (below). > Session timers don't use update as a target-refresh...the BCP > even now could be not to use UPDATEs outside of reINVITEs > > > > 5 UPDATE Handling > > 5.1 Sending an UPDATE > > The UPDATE request is constructed as would any other request within > an existing dialog, as described in Section 12.2.1 of RFC 3261. It > MAY be sent for both early and confirmed dialogs, and MAY > be sent by > either caller or callee. Although UPDATE can be used on confirmed > dialogs, it is RECOMMENDED that a re-INVITE be used > instead. This is > because an UPDATE needs to be answered immediately, ruling out the > possibility of user approval. Such approval will frequently be > needed, and is possible with a re-INVITE. > > ________ > ________________________________ > From: sipping-bounces@xxxxxxxx > [mailto:sipping-bounces@xxxxxxxx] On Behalf Of Elwell, John > Sent: Wednesday, February 18, 2009 5:50 AM > To: Christer Holmberg; wang.libo@xxxxxxxxxx > Cc: sipping@xxxxxxxx > Subject: Re: About "rollback of re-Invite" > > > > Exactly, I would be concerned about changing RFC 3311. > > John > > ________________________________________ > From: Christer Holmberg [mailto:christer.holmberg@xxxxxxxxxxxx] > Sent: 18 February 2009 10:14 > To: Elwell, John; wang.libo@xxxxxxxxxx > Cc: sipping@xxxxxxxx > Subject: RE: RE: About "rollback of re-Invite" > Hi, > > I don't think we can completely forbid UPDATE outside > re-INVITEs. It's just too late for that. > > Regards, > > Christer > > > Forever, > Sumit > "The reasonable man adapts himself to the world; the > unreasonable one persists in trying to adapt the world to > himself. Therefore all progress depends on the unreasonable man." > -- George Bernard Shaw > > > > _______________________________________________ > Sipping mailing list https://www.ietf.org/mailman/listinfo/sipping > This list is for NEW development of the application of SIP > Use sip-implementors@xxxxxxxxxxxxxxx for questions on current > sip Use sip@xxxxxxxx for new developments of core SIP > _______________________________________________ Sipping mailing list https://www.ietf.org/mailman/listinfo/sipping This list is for NEW development of the application of SIP Use sip-implementors@xxxxxxxxxxxxxxx for questions on current sip Use sip@xxxxxxxx for new developments of core SIP
