On Tue, Nov 25, 2008 at 1:44 AM, Rockson Li (zhengyli) <[EMAIL PROTECTED]>wrote:
> I wonder why you think the first subscribe fails with a 500 due to out > of order CSeq number. > Sine the second one would be sent with Cseq+1 as in first one. > I don't see out of order CSeq number issue here. Paul is talking about a race condition where the SUBSCRIBE (Expires: 0) arrives first at the UAS. In that case the SUBSCRIBE (Expires: 3600) will get a 500 response. -- Raj Jain > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Paul Kyzivat (pkyzivat) > Sent: Tuesday, November 25, 2008 1:11 AM > To: Volkan Hatem > Cc: [email protected] > Subject: Re: [Sip-implementors] Multiple Subscriptions in a dialog. > > > > Volkan Hatem wrote: > > How are you planning to handle race conditions where "Subscribe > expires:0" > > is delivered before the original subscribe? > > In that case, you get the one notify, and the earlier subscribe fails > with a 500 due to out of order CSeq number. But you get the result you > wanted. > > > -volkan > > > > 2008/11/24 Evgeniy Khramtsov <[EMAIL PROTECTED]> > > > >> Naarumanchi Kaushik wrote: > >> > >>> Hi All, > >>> > >>> In a Subscribe dialog, can we unsubscribe before receiving 200 OK > >>> for the subscribe refresh request? > >>> Regards, > >>> N.V.S.Kaushik. > >>> > >> Why not? This is a case flow: > >> > >> F1 |--Subscribe Expires:3600-->| > >> F2 |--Subscribe Expires:0----->| > >> F1 |<------------OK------------| > >> F1 |<----------NOTIFY----------| > >> F2 |<------------OK------------| > >> F2 |<---NOTIFY terminated------| > >> > >> I don't see any weird situation here. > >> > >> -- > >> Regards, > >> Evgeniy Khramtsov, ProcessOne. > >> xmpp:[EMAIL PROTECTED] <[EMAIL PROTECTED]> <[EMAIL PROTECTED]<[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 > > > _______________________________________________ > 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 > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
