Hi Nagaraj,
If the Dialog has a Route-Set, and the First route is a Strict
router, the ACK's Request URI will be the strict Router's address.
If the route-set is not present, or the First Route is a Loose Router, the Request URI
will be the contact of the Callee , as you said !
Cheers.
Simith
Nagaraj S <[EMAIL PROTECTED]> wrote:
Hi,
I guess, Request-Uri of Ack Request for 2XX response must be
2xx response's contact address.
I think the below pararaph taken from section 12.1 of RFC 3261 will make it clear.
" When a UAS responds to a request with a response that establishes a
dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route
header field values from the request into the response (including the
URIs, URI parameters, and any Record-Route header field parameters,
whether they are known or unknown to the UAS) and MUST maintain the
order of those values. The UAS MUST add a Contact header field to
the response. The Contact header field contains an address where the
UAS would like to be contacted for subsequent requests in the dialog
(which includes the ACK for a 2xx response in the case of an INVITE)."
FYI, the section 12.2 explains how to construct requests within a dialog using remote
target URI.
Pls let me know if I am wrong.
---
Rgds
Nagaraj S
----- Original Message -----
From: Gangadharan G - NPD,Chennai
To:
Sent: Tuesday, October 12, 2004 4:36 PM
Subject: [Sip-implementors] Forming Ack Request
> hi All,
> Whether Request-Uri of Ack Request for 2XX response should be
> * Invite's Request-Uri
> (or)
> *2xx response's contact address
> thx,
> Gangadharan.
>
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