If so, what are the formal reasons for re-sending a NOTIFY with unchanged event package data?
Avasarala Ranjit-A20990 wrote: > Hi > > The Cseq header is for the NOTIFY message while the "version" element is for > the dialog information document. So an incremented version value in dialog > info xml document indicates that the xml document received is an updated one. > If the version is not incremented, then it means that the dialog info doc is > same as previous one (implying no change in dialog info) - though here the > received NOTIFY message could have an incremented Cseq value. > > Regards > Ranjit > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Iñaki > Baz Castillo > Sent: Tuesday, January 20, 2009 4:21 PM > To: SIPImplementors Mailing list > Subject: [Sip-implementors] RFC 4235 - Why is needed "version" in NOTIFY XML > > Hi, RFC 4235 states that each NOTIFY about a dialog(s) must increment the > "version" field value, the the recipient must ignore notifications with no > incremented "version" numbers. > I wonder why this mechanism is needed, is not enough with CSeq? The NOTIFY is > part of a dialog and there is already a mechanism to control de sequential > requests order (CSeq header). > > Isn't this "version" field a redundant solution? Is it really needed? > (perhaps I miss something...). > > Thanks for any explanation. > > -- > Iñaki Baz Castillo > <[email protected]> > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors -- Alex Balashov Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671 Mobile : (+1) (678) 237-1775 _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
