[Sip-implementors] UA behaviour on recieving INVITE withoutmax-forwards header

[krishna kalluri]

Hi,

Attilas response is correct if a proxy receives an INVITE with out
Max-Forwards header field. I think Navneet is saying "Endpoint"

Section 16.6 point 3 of RFC 3261 says
"If the copy does not contain a Max-Forwards header field, the proxy MUST
add one with a field value, which SHOULD be 70"

In RFC 3261 I didn't find any description about what an endpoint should do
if it receives with out Max-Forwards.

I don't know which error code is correct but the proxies on the path are not
behaving correctly.


Regards
Krishna



> Message: 8
> Date: Wed, 24 Sep 2008 10:53:29 +0100
> From: "Attila Sipos" <attila.sipos at vegastream.com>
> Subject: Re: [Sip-implementors] UA behaviour on recieving INVITE
>        withoutmax-forwards header
> To: "Navneet Gupta" <navneet.gupta at hsc.com>,
>        <sip-implementors at lists.cs.columbia.edu>
> Message-ID:
>        <680808427CF931459462C3D78CB5EC60033379BE at EXVS02.nasstar-t1.net>
> Content-Type: text/plain;       charset="US-ASCII"
>
> Step d) Process the INVITE normally.
>
> from RFC3261
>         Some existing UAs will not provide a Max-Forwards header field
>         in a request.
>
> Regards,
>
> Attila
>
>
>
> -----Original Message-----
> From: sip-implementors-bounces at lists.cs.columbia.edu
> [mailto:sip-implementors-bounces at lists.cs.columbia.edu] On Behalf Of
> Navneet Gupta
> Sent: 24 September 2008 10:42
> To: sip-implementors at lists.cs.columbia.edu
> Subject: [Sip-implementors] UA behaviour on recieving INVITE
> withoutmax-forwards header
>
> Hi
> If a SIP UA (Endpoint), recieves an INVITE request which does not
> contain the mandatory Max-Forwards header, what should the UA do? Should
> it -
>
> a) respond with 483 (Too many hops) response
> b) respond with 400 Bad request response
> c) Stay quiet and Ignore the INVITE.
> d) Process the INVITE normally.
>
> Please help.
>
> Regards
> Navneet
>
>
>
>
>