Hi,

Practically it seems to be MAY. I have checked many SIP stacks and they
didn,t include Date header.

Regards,
Sabyasachi


On 3/3/08, Iñaki Baz Castillo <[EMAIL PROTECTED]> wrote:
>
> Hi, I'm sure that "Date "header is not mandatory at all in the 200 OK to a
> REGISTER. In fact I don0t know a registrar adding it.
>
> But RFC 3261 says:
> ------------------------------------------------------------------
> 10.3 Processing REGISTER Requests
>
>      8. The registrar returns a 200 (OK) response.  The response MUST
>          contain Contact header field values enumerating all current
>          bindings.  Each Contact value MUST feature an "expires"
>          parameter indicating its expiration interval chosen by the
>          registrar.  The response SHOULD include a Date header field.
> ------------------------------------------------------------------
>
> But it also says:
> ------------------------------------------------------------------
>   10.2.5 Setting the Internal Clock
>
>    If the response for a REGISTER request contains a Date header field,
>    the client MAY use this header field to learn the current time in
>    order to set any internal clocks.
> ------------------------------------------------------------------
>
>
> So? is that "Date" header a SHOULD or a MAY?
>
>
>
>
> --
> Ińaki Baz Castillo
> [EMAIL PROTECTED]
>
> _______________________________________________
> Sip-implementors mailing list
> [email protected]
> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
>



-- 
Regards,
  Sabyasachi Samal
  IMS Testing Solution
  Nethawk Networks India Pvt. Ltd.
  Bhubaneswar
  Orissa, India
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