If a registrar receives REGISTER request with Max-Forwards value zero,
should he respond with 200 OK or 483 Too Many hops?

On Tue, Feb 24, 2009 at 9:38 AM, Scott Lawrence
<[email protected]>wrote:

> On Tue, 2009-02-24 at 08:37 -0800, cool goose wrote:
> > What about the request validation rules specified in Sec 16.3?
>
> What about them - they say:
>
>   3. Max-Forwards check
>
>      The Max-Forwards header field (Section 20.22) is used to limit the
>      number of elements a SIP request can traverse.
>
>      If the request does not contain a Max-Forwards header field, this
>      check is passed.
>
> > Will they apply only if the registrar is proxying?
>
> if it's proxying, it's not a registrar, it's a proxy, and the only
> requirement is that if there is no header then the proxy must add one.
>
>
>
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