El Lunes 06 Abril 2009, Brett Tate escribió: > The following is a non service example. > > B2BUA aware of Session-Expires activated upon early dialog by UPDATE. > B2BUA does not receive refresh in time; it sends BYE towards called party > for 1 of multiple early dialogs for branch.
Yes, in theory it can be implemented since it's written :) That's why I insist on "real" implementations :) > > since RFC3261 is not strict about the need of Contact and RR headers > > in 1XX responses, we cannot expect sending an in-dialog request (BYE) > > during an early-dialog to work. > > If I recall correctly (sorry no time dig up references), RFC 3261 is strict > about adding Contact although it may be hidden within the text. The To tag > is required to form a dialog; Contact is required to be included within > dialog forming responses. Yes, but RFC 3261 states that Contact is required in reliable responses, and according to RFC 3261 1XX are not reliable. I remember a long thread about it and it was clear that... it wasn't clear :) In fact I've seen lots of implementations not adding Contact and RR in 1XX responses. Regards. -- Iñaki Baz Castillo <i...@aliax.net> _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
