Comments inline... On Wed, Apr 4, 2012 at 4:57 PM, Leo Leo <[email protected]> wrote:
> Just remmembering, the dialog shall end after timeout expires (64*T1), not > just after receiving the first BYE. Before it, if BYE arrives, a 200 OK > shall be sent. > [ABN] Soon after sending 200-BYE, the server transaction moves to COMPLETED state. Then wait for Timer_J(64*T1) duration. Server transaction terminates after TJ expires --> TERMINATED state. When server transaction is in COMPLETED state, same old response would be sent back and request will not be passed upto the UAS layer. Retransmitted BYE requests could be handled by the server transaction itself (by Timer_J = 64*T1). No need to defer deletion of dialog for the duration of 64*T1(TJ) * * > > :) > > Leonardo > > > ________________________________ > De: Nataraju A.B <[email protected]> > Para: M. Ranganathan <[email protected]> > Cc: sip-implementors <[email protected]> > Enviadas: Terça-feira, 3 de Abril de 2012 22:26 > Assunto: Re: [Sip-implementors] BYE retransmissions > > comments inline... > > On Wed, Apr 4, 2012 at 12:55 AM, M. Ranganathan <[email protected]> wrote: > > > Consider the following scenario: > > > > UA sends peer UA BYE > > Recipient of BYE sends OK and tears down the dialog. > > OK gets lost so sender of UA re-sends BYE. > > Now there's a dialog in Terminated State but no server transaction (it > > has already been removed). > > > > What is the most appropriate way for the receiver of the retransmitted > > BYE to respond? > > > > Should it respond with OK, CALL_OR_DIALOG_NOT_FOUND or SERVER_FAILURE > > ( due to the fact that the in-dialog BYE has been sent with a > > previously seen cseq number) ? > > > > [ABN] UA receiving BYE must reply with 481 (Transaction does not > exist), > Hence no issue for UAC / UAS. UAS already terminated, UAC terminates > the dialog after 481. > Both are happy in the end... > > > > > > > > -- > > M. Ranganathan > > _______________________________________________ > > Sip-implementors mailing list > > [email protected] > > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > > > > > -- > Thanks, > Nataraju A.B. > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > -- Thanks, Nataraju A.B. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
