[Sip-implementors] Question about receiving of re-transmission ofinvite at UAS
asjoshi at varaha.com
Mon Sep 26 02:14:37 EDT 2005
Firstly I think as per the RFC 3261, retransmitted INVITE will have the same
Cseq. I don't know if branch id will be the
appropriate field to check for a retransmitted packet.
You must ignore the retransmitted INVITE if you have sent a 200 OK for it.
From: sip-implementors-bounces at cs.columbia.edu
[mailto:sip-implementors-bounces at cs.columbia.edu] On Behalf Of Richard Wu
Sent: Monday, September 26, 2005 11:08 PM
To: sip-implementors at cs.columbia.edu
Subject: [Sip-implementors] Question about receiving of re-transmission
ofinvite at UAS
Supporse there are a UAC and a UAS. The UAS receives the an INVITE and
creates a IST. It responds with a 200 OK (IST directly goes to the
terminated state) and waits for an ACK. At this time, if a re-transmission
of invite is received (with the same branch param in the top via header),
what should the UAS do? create a new IST or ignore it?
If there is a solution, does it apply to the re-invite? Thanks in advance
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