> -----Original Message-----
> From: ext Goix Walter [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, June 18, 2002 8:12 PM
> To: [EMAIL PROTECTED]
> Subject: [Sip-implementors] To tag in out-of-dialog requests
>
>
> Hi all,
>
> I got a doubt about the specs regarding UAS processing of
> out-of-dialog
> requests (and that can not initiate a dialog, such as MESSAGE).
> According to draft-09, these requests MUST NOT contain any To tag
> (8.1.1.2), but some implementations just do that..., and the draft is
> not that clear about how to handle them when they contain a To tag.
>
> Section 12.2.2 talks about accepting requests with unknown To tag sent
> within a dialog (to handle UA crashes), but Section 8.2 doesn't say
> anything about out-of-dialog requests in this case.
If you have a tag in the to-header, then you assume the request in within a dialog
(how can the UA tell the difference between a request outside a dialog and the tag and
a request within a dialgo with unknown to tag?). If you don't find a dialog associated
with it, you either accept or reject it (based on your implementation).
/Hisham
>
> It seems to me that when receiving such a request that
> contains a tag in
> the To: header the UAS should respond with a 481, since it
> doesn't match
> any existing dialog...or is the UAS processing left free to the
> implementor in this case to decide whether to accept the request?
>
> Thanks in advance,
> Laurent-Walter Goix
>
>
>
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