Subject: [Sip] Re: [Sipping] Tags in respones to CANCEL WAS: Re: Question aboutSection 3.8 ofdraft-ietf-sipping-basic-call-flows-01.txt(Eiji Tomimura)

From: Gonzalo Camarillo <[email-masked]>
Date: Wed, 06 Nov 2002 08:09:02 +0200

Keith,

You are actually right. I have moved this thread to SIP now.

Thanks,

Gonzalo

"Drage, Keith (Keith)" wrote:
> 
> Hang on. You are discussing a set of example flows on the sipping list.
> 
> That discussion should not be used to rewrite SIP.
> 
> The example flows should merely show an example of what is legitimate in RFC 3261.
> 
> If you think RFC 3261 needs fixing, then it should be discussed on the SIP list, which an appropriate bug fix finally agreed and listed.
> 
> Keith
> 
> Keith Drage
> Lucent Technologies
> Tel: +44 1793 776249
> Email: [email-masked]
> 
> > -----Original Message-----
> > From: Gonzalo Camarillo [mailto:[email-masked]]
> > Sent: 05 November 2002 15:34
> > To: Jonathan Rosenberg
> > Cc: Bob Penfield; Jiri Kuthan; Jiri Kuthan; manoj mallik;
> > [email-masked]; [email-masked]; [email-masked]
> > Subject: Re: [Sipping] Tags in respones to CANCEL WAS: Re: Question
> > about Section 3.8 ofdraft-ietf-sipping-basic-call-flows-01.txt(Eiji
> > Tomimura)
> >
> >
> > Hi,
> >
> > Let's try to finish this discussion. Summarizing:
> >
> > Should the 200 OK responses to CANCEL have a To tag?
> >
> > Reasons for NO:
> >
> > CANCEL is hop-by-hop, and therefore, 200 OK responses for CANCEL are
> > also hop-by-hop. If we look at 100 Trying responses, which are
> > hop-by-hop as well, we see that they do not have a tag.
> >
> > Reasons for YES:
> >
> > Final responses to any request have tags. Even non-2xx final responses
> > for INVITE, which are hop-by-hop, have a tag.
> >
> > Note that user agents and proxies will have to be prepared to receive
> > 200 OK responses for CANCEL with or without tags anyway, to improve
> > interoperability. So, this is not a big deal after all. Our
> > decision is
> > only useful as long as it helps develop a coherent spec.
> >
> >
> > I would suggest to go for YES, document it, and move on.
> >
> > Comments?
> >
> > Thanks,
> >
> > Gonzalo
> > _______________________________________________
> > Sipping mailing list  https://www1.ietf.org/mailman/listinfo/sipping
> > This list is for NEW development of the application of SIP
> > Use [email-masked] for questions on current sip
> > Use [email-masked] for new developments of core SIP
> >
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