Re: configuration NOTIFY in example 9.1 of outbound i-d
Paul Kyzivat <[email protected]>
| Newsgroups | gmane.ietf.sip |
|---|---|
| Message-ID | <[email protected]> |
I guess our replies overlapped. Francois Audet wrote: > My take on this is that Juha is right and the document should really say: > > If the UAC is sending a dialog-forming request, and wants all > subsequent requests in the dialog to arrive over the same > flow, the UAC MUST add an 'ob' parameter to its Contact header. > [ DELETE NEXT SENTENCE ENTIRELY ] > > In other words, GRUU is orthogonal and does NOT imply "ob" behavior. Not quite. If you have obtained a gruu after registering a contact with outbound, you don't have to put "ob" on the gruu. It wouldn't help, since it would get lost in the process of translating the gruu. Thanks, Paul > Clean and simple, and I *think* this was our intent (i.e., I think > this is an historical oversight). > > Cullen, can you confirm or clarify? > >> -----Original Message----- >> From: Dean Willis [mailto:[email protected]] >> Sent: Thursday, October 02, 2008 15:56 >> To: Paul Kyzivat >> Cc: Audet, Francois (SC100:3055); Cullen Jennings; Rohan >> Mahy; [email protected] >> Subject: Re: [Sip] configuration NOTIFY in example 9.1 of outbound i-d >> >> >> On Sep 29, 2008, at 3:26 PM, Paul Kyzivat wrote: >> >>> >>> Francois Audet wrote: >>>>>> Section 4.3 states (UA procedures): >>>>>> If the UAC is sending a dialog-forming request, and wants all >>>>>> subsequent requests in the dialog to arrive over the same >>>>> flow, the >>>>>> UAC adds an 'ob' parameter to its Contact header. Typically >>>>> this is >>>>>> desirable, but it is not necessary for example if the Contact >>>>> is a >>>>>> GRUU [I-D.ietf-sip-gruu]. >>>>> if contact is gruu, does it mean that 'ob' param is implicitly >>>>> included? >>>> I am not sure why this is worded like this. I was thinking >> that using >>>> a GRUU as a contact in a dialog-forming request would mandate that >>>> requests sent to that Contact would be sent using the same >> flow, but >>>> I see no such rule in draft-ietf-sip-gruu. >>> Gruu isn't dependent on outbound. >>> >>> >> So explain this one for me, please. >> >> Is it that, if the gruu was formed using outbound (that is, >> the "real" >> contact for which the gruu is an alias has an "ob") use of >> the gruu will use the "ob" in the dereferencing at the gruu-provider? >> >> So for the example referenced above may be correct, but >> incomplete -- it should talk about whether or not the gruu >> was formed using outbound, not just whether or not the >> contact isa gruu. >> >> -- >> Dean >> >> >> >> >> > _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [email protected] for questions on current sip Use [email protected] for new developments on the application of sip