RE: [Sipping] HERFP work

Hi John, 

>Sorry I didn't get up to speak to this during the session, 
>but I still have a hard time understanding why the 199 
>proposal addresses HERFP, even partially. The 199 response 
>just indicates that an early dialog has terminated, without 
>giving any reason. To me it addresses a different problem space.

I guess the question is: what really is the HERFP problem?

Some say that the HERFP problem is simply the fact that you are not
informed about a terminated dialog - and in that case 199 does solve the
problem.

However, others think that HERFP is much more than that. E.g. Rohan's
draft defines procedures which can be taken after the UAC has received
the indicateion of the terminted dialog.

But, again, the purpose of my draft is to simply indicate that a dialog
has been terminated. Maybe it can then be used to solve other problems,
but that is not purpose of the draft.

Regards,

Christer

> > -----Original Message-----
> > From: Gonzalo Camarillo [mailto:Gonzalo.Camarillo@ericsson.com]
> > Sent: 27 July 2007 00:53
> > To: sipping
> > Cc: Mary Barnes
> > Subject: [Sipping] HERFP work
> > 
> > Folks,
> > 
> > today, in the SIPPING session, we agreed that the SIPPING WG should 
> > work on, at least, resolving the problem described in:
> > 
> > 
> http://www.ietf.org/internet-drafts/draft-holmberg-sipping-199-02.txt
> > 
> > This problem is a subset of the more general HERFP problem, 
> which is 
> > not only concerned with how to provide the UAC with 
> information about 
> > the final error response generated by the UAS, but also with how to 
> > fix the problem reported by the final error response (e.g., 
> by sending 
> > a new request).
> > 
> > Here you have a few (already expired) individual drafts on HERFP:
> > 
> > http://www.watersprings.org/pub/id/draft-jbemmel-sipping-herfp
> > -solution-00.txt
> > 
> http://www.watersprings.org/pub/id/draft-jbemmel-herfp-solution-00.txt
> > 
> http://www.watersprings.org/pub/id/draft-mahy-sipping-herfp-fix-01.txt
> > http://www.watersprings.org/pub/id/draft-roach-sip-herfp-avoid
> > ance-00.txt
> > http://www.watersprings.org/pub/id/draft-rosenberg-sip-unify-00.txt
> > 
> > We need to decide whether it is enough to work on the problem 
> > described in draft-holmberg-sipping-199-02.txt or we should work on 
> > the more general HERFP problem.
> > 
> > Comments are welcome.
> > 
> > Thanks,
> > 
> > Gonzalo
> > SIPPING WG co-chair
> > 
> > 
> > _______________________________________________
> > Sipping mailing list  https://www1.ietf.org/mailman/listinfo/sipping
> > This list is for NEW development of the application of SIP Use 
> > sip-implementors@cs.columbia.edu for questions on current sip Use 
> > sip@ietf.org for new developments of core SIP
> > 
> 
> 
> _______________________________________________
> Sipping mailing list  https://www1.ietf.org/mailman/listinfo/sipping
> This list is for NEW development of the application of SIP 
> Use sip-implementors@cs.columbia.edu for questions on current 
> sip Use sip@ietf.org for new developments of core SIP
> 

_______________________________________________
Sipping mailing list  https://www1.ietf.org/mailman/listinfo/sipping
This list is for NEW development of the application of SIP
Use sip-implementors@cs.columbia.edu for questions on current sip
Use sip@ietf.org for new developments of core SIP