> -----Original Message-----
> From: Vijay Gurbani [mailto:[EMAIL PROTECTED]]
> Sent: Monday, April 30, 2001 2:47 PM
> To: Shail Bhatnagar
> Cc: SIP Implementors
> Subject: [Sip-implementors] Re: [SIP] Should proxy forward
> non-200 final
> response after CANCEL
>
>
> Shail Bhatnagar wrote:
>
> > vkg> Well, not quite. It will forward one 487 if multiple
> of them are
> > vkg> received. A proxy forwards multiple 401 and 407
> responses, but it
> > vkg> should only forward one 487.
> >
> > Is the above line a quote from one of Jonathan's email or
> > somewhere in the bis draft ? ?
>
> -02 bis, PDF version, page 86; see handling of 4xx,5xx responses.
No, no, no. Its the WWW-Authenticate and Proxy-Authenticate headers that are
"collected", placed into a SINGLE 401 or 407, and forwarded upstream.
>
> > vkg> CANCEL is hop-by-hop (at least for stateful proxies),
> not end-to-end.
> >
> > I knew about the hop-by-hop aspect of CANCEL, but thought
> > that once a request is CANCEL(led), forwarding non-200 final
> > response upstream does not make sense.
>
> Nope; the non-2xx response has to be forwarded to that the
> UAC (and state-
> ful proxies) can clean up their INVITE transaction. Unless
> you want to get
> Jonathan really mad, always remember:
>
> Each transaction completes independent of others
Thank you Vijay. I was about to type it three times, yet again.....
-Jonathan R.
---
Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Ave.
Chief Scientist First Floor
dynamicsoft East Hanover, NJ 07936
[EMAIL PROTECTED] FAX: (973) 952-5050
http://www.jdrosen.net PHONE: (973) 952-5000
http://www.dynamicsoft.com
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