Badri Srinivasan S wrote: > Hi: > > => The bis-05 draft states that at the UAS if the incoming INVITE has an > Expires Hdr that has > already expired, the UAS should generate a 487 Rsp..But earlier drafts say > the UAS should generate a 408 (Request Timed Out). can anybody clarify on this. Its 487 to unify treatment with the case where the UAC sends CANCEL upon expiration, which will result in a 487. It really doesn't matter. > > => Also can Expires Hdr be present in ReInvites too.? Sure, although its usefulness is limited, since they are usually answered immediately. > > => should the UAC send out a CANCEL for the INVITE even if provisional rsp > is received for the > INVITE but no Final Rsp is recvd. Is the Expires timer for any kind of rsp > or only final rsp..? No. You only send CANCEL after a 1xx has been received. If you never get any response at all, its likely there is some kind of server failure and so a CANCEL would not likely accomplish anything anyway. UAC can elect to CANCEL if it receives no *final* response after the expiration; that is, after all, what it is interested in. -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
