Hi Inaki, I agree with you. My assumption was the second 180 is within same dialog and I tend to believe that was the issue here. It is the reason why I didn't mention early-dialog creation.
regards, Djani --- On Sat, 5/9/09, Iñaki Baz Castillo <i...@aliax.net> wrote: From: Iñaki Baz Castillo <i...@aliax.net> Subject: Re: [Sip-implementors] what is the uac behaviour when reliable 180 responce with sdp receves twice To: sip-implementors@lists.cs.columbia.edu Date: Saturday, May 9, 2009, 11:16 PM El Sábado, 9 de Mayo de 2009, Đani Vladislavić escribió: > Hi, > > According to rfc only one offer and one answer is permitted per > transaction. This is incorrect. Only one SDP answer is permitted per dialog (or early- dialog). In case of parallel forking varios different SDP answers can arrive to UAC (all of them are part of the same INVITE transaction, but all of them have different "To tag" => different (early)dialog). > Since we hava reliable provisional responses in this scenario, > offer/answer is finished for initial INVITE transaction with first 180. SDP > in all other subsequent responses must be ignored. Not true. A new SDP must be ignored just in case a SDP was already received for the same dialog (Call-ID, From_tag and To_tag). -- Iñaki Baz Castillo <i...@aliax.net> _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
