>> I think this should be treated as malformed header field for ACK request
>> ( It is not expected to be included in ACK ) and thus should be ingored

I think the header is well formed (grammatically correct), but it has no
semantics in ACK message.

On Thu, Apr 3, 2008 at 11:34 AM, Pandurangan R S <[EMAIL PROTECTED]>
wrote:

> >> I think this should be treated as malformed header field for ACK
> request
> >> ( It is not expected to be included in ACK ) and thus should be ingored
>
> I think the header is well formed (grammatically correct), but it has no
> sementics in ACK message.
>
>
> On Wed, Apr 2, 2008 at 9:32 PM, Singh, Indresh (NSN - US/Boca Raton) <
> [EMAIL PROTECTED]> wrote:
>
> > I agree with Robert w.r.t to best results for inter-operability,
> >
> > I think this should be treated as malformed header field for ACK request
> > ( It is not expected to be included in ACK ) and thus should be ingored
> >
> > 8.2.2 Header Inspection
> >
> >   If a UAS does not understand a header field in a request (that is,
> >   the header field is not defined in this specification or in any
> >   supported extension), the server MUST ignore that header field and
> >   continue processing the message.  A UAS SHOULD ignore any malformed
> >   header fields that are not necessary for processing requests.
> >
> > Regards,
> >
> > Indresh
> > >>-----Original Message-----
> > >>From: [EMAIL PROTECTED]
> > >>[mailto:[EMAIL PROTECTED] On
> > >>Behalf Of ext Robert Sparks
> > >>Sent: Wednesday, April 02, 2008 11:51 AM
> > >>To: kavitha.subramaniam
> > >>Cc: sip-implementors@lists.cs.columbia.edu
> > >>Subject: Re: [Sip-implementors] FW: Require: 100rel in ACK
> > >>
> > >>Without looking at the specs, here's what I believe they say (I'll
> > >>chase down text later if you really need me to).
> > >>In any case, this is what you should do for maximum interoperability:
> > >>
> > >>Don't put Require: 100rel in an ACK.
> > >>Don't get upset if someone else does - ignore it.
> > >>
> > >>RjS
> > >>
> > >>On Apr 2, 2008, at 4:11 AM, kavitha.subramaniam wrote:
> > >>
> > >>> Hi All,
> > >>> I have got a question about Require: 100rel in ACK Request.
> > >>>
> > >>> Presence of Require: 100rel header in ACK request is allowed?
> > >>>
> > >>> RFC 3262 says "A Require header with the value 100rel MUST NOT be
> > >>> present in any requests excepting INVITE, although
> > >>extensions to SIP
> > >>> may allow its usage with other request methods".
> > >>>
> > >>>
> > >>> In RFC 3261 it is mentioned that "An ACK request for a 2xx
> > >>response
> > >>> MUST contain only those Require and Proxy-Require values that were
> > >>> present in the initial request".
> > >>>
> > >>> My question is:
> > >>> Both the statements are contradicting. Which one should be taken?
> > >>>
> > >>> Regards,
> > >>> Kavitha.
> > >>>
> > >>>
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