Hi All,
I have query regarding session-timer. The call flow is as below.
UAC ------INVITE[sdp offer]-------------->UAS (contains a Session-Expires
header)
UAC<-----183----------[sdp answer]-----UAS
UAC---------PRACK[no sdp]---------------->UAS
UAC<--------OK(PRACK)[no sdp]----------UAS
UAC------UPDATE[sdp offer]----->UAS (also contains a Session-Expires header)
Now should UAS send 200 OK response to the UPDATE?
If it should, then I feel 200 OK for UPDATE should not include
Session-Expires header as one of the session refresh request is under process [
though INVITE here is the initial negotiation message for which it has not
received any final response let me treat it as one of refresh request as it
has requested timer.Any comments on this?] .
Is 'sending the 200 OK with no session-expires for UPDATE message' the
correct behaviour? Or should it be rejected with any failure response 4xx-6xx?
Please provide your valuable suggestions.
Thanks and regards,
Praveen Dandin
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