Hi Venkat,
The CANCEL request is never challenged by any element
since it cannot be resubmitted. Therefore you need not compute
and add credentials in this request. The CANCEL will be accepted
by any server as long as it comes from the same previous hop
as the original request.Subhash Nayak Hughes Software Systems http://www.hssworld.com "Arunachalam Venkatraman" <[EMAIL PROTECTED]> on 01/09/2003 06:34:44 AM To: [EMAIL PROTECTED] cc: (bcc: Subhash Ullal Nayak/HSSBLR) Subject: [Sip-implementors] Credentials in CANCEL - qop nc-value The UAC behavior for CANCEL is not discussed in RFC 3261. When a UAC computes the request digest for CANCEL, should it use the nc-value unchanged from the INVITE or should it increment the nc-value? In general, every request should have a new nc-value (except ACK, of course), so I think this will apply to CANCEL. Is this correct? Venkat
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The
UAC behavior for CANCEL is not discussed in RFC 3261.
When a UAC computes the
request digest for CANCEL, should it use the nc-value unchanged from the INVITE
or should it increment the nc-value?
In general, every request should have a new nc-value
(except ACK, of course), so I think this will apply to CANCEL. Is this
correct?
Venkat
|
