inline. Ken Jordan wrote: > Section 9.1 bis-09 gives the following reason why the CANCEL should not > be > sent by the UAC to the UAS for an INVITE before a provisional response > is > received. > > If it was allowed to send the CANCEL before receiving a > response for the previous request, the server could receive > the CANCEL before the original request. > > I believe another important reason is to handle the race condition where > the > UAS has already sent a response which has not yet been received by the > UAC. > In that case, the UAC would not know the tag value to use in the To > field > and the UAS would reject the CANCEL (not being able to match it > (including > tags) to the INVITE). > > Is this true?
No. CANCEL is matched against the original request, and carries the same tags as the original request. -Jonathan R. -- Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Avenue Chief Scientist First Floor dynamicsoft East Hanover, NJ 07936 [EMAIL PROTECTED] FAX: (973) 952-5050 http://www.jdrosen.net PH: (973) 952-5000 http://www.dynamicsoft.com _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
