If there are no binding remaining, the 200 OK does not need to have a Contact header. A 200-OK response without any Contacts indicates that there are no bindings.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, April 07, 2009 8:08 AM To: [email protected] Cc: [email protected]; [email protected] Subject: [Sip-implementors] Doubt on inclussion of Contact header in 200 OK to deregistration Hi A user agent registers against a REGISTRAR; so a 200 OK response is generated and includes a Contact header with the binding included in the request. No more bindings are stores in the registrar for this sip user. The user agent starts a deregistration procedure (i.e. REGISTER with Expires=0). How shall the registrar build the 200 OK response assuming no binding is left? I guess the 200 OK MUST include a Contact header, even though no binding is left, right? Regards Javier F. _______________________________________________ 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
