100rel does not make sense in re-INVITE as session is already established. UAS is expected to send final response (2XX/4XX/5XX etc ). It can send 100 trying to stop retransmission of INVITE while it's preparing the final response. It's not recommended for UAS to send 1XX response for the re-INVITE.
Thanks, -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of B, Nataraju Sent: Tuesday, October 31, 2006 5:28 AM To: Tang Xi; sip-implementors Subject: Re: [Sip-implementors] Query 100rel in re-INVITE Comments inline... Thanks, Nataraju A B > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:sip-implementors- > [EMAIL PROTECTED] On Behalf Of Tang Xi > Sent: Tuesday, October 31, 2006 2:42 PM > To: sip-implementors > Subject: [Sip-implementors] Query 100rel in re-INVITE > > Hi sip group, > > UAC sends a re-INVITE request, but there is a Require:100rel header in > it, must UAS reject the re-INVITE? > [ABN] if UAS does not support PRACK, then it should be rejected by 420 response... Otherwise it's not required to be rejected, just because it carried 100rel. > Thanks in advance. > Tang Xi > _______________________________________________ > 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 This email and any attached files herein contain information that is intended only for the use of the individual or entity to whom it is addressed and may contain information that is legally privileged, confidential or otherwise exempt from disclosure under applicable laws. If the reader of this message is not the recipient, any disclosure, dissemination, distribution, copying or other use or retention of this communication or its substance is prohibited. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
