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Re: [Sip] Comments on draft-ietf-sip-outbound-05

Hi,

Thanks for the editorial comments.  Two answers inline.

On 10/29/06, EKR <ekr at networkresonance.com> wrote: 
$Id: draft-ietf-sip-outbound-05-rev.txt,v 1.1 2006/10/29 19:54:58 ekr Exp $

S 6.
   comparison purposes.  A Contact header field value with an
   instance-id but no reg-id is valid, but one with a reg-id but no
   instance-id is not.  If the registrar processes a Contact header

When would instance-id but no reg-id happen? 

registering for a GRUU (has an instance-id) but not with outbound (no reg-id).

      however implementations need to be preared to receive STUN
      messages which cross a stream buffer boundary, and SIP and STUN
      messages which share the same stream buffer.

I don't understand what this means. If you mean that any time you
call read(1) you might get SIP and STUN messages intermixed, isn't
that a basic property of TCP?


Yes, but most implementors do not have a lot of experience muxing two
protocols over TCP.  This turned out to be a major PIA for
implementors.

thanks,
-rohan

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