[Serusers] Race Condition on CANCEL?

[Atle Samuelsen]

Hi,

I might be wrong, but I think Andrei added some code in CVS head a few
days back that addresses this issue. 

-A

* Gustavo Passos Tourinho <gustavo.passos.tourinho at gmail.com> [070511 13:57]:
> Thanks for your reply.
> 
> Yes, I have this problem right now. The problem is that when the proxy receives 200 OK (for INVITE, confirmed by CSeq), insted of 200 Cancelling,  it issue 
> an RADIUS request for billing.
> 
> So, I will have an "Start-Invite" (200 OK), but will have not a "Stop-Bye" because the BYE message will not be generated.
> 
> How can I ensure that the proxy will not forward 200 OK for INVITE? I mean, if it is a transaction statefull and the transaction doesnt existis, why it is 
> stills forwarding the message? Is there any thing that I can do to prevent this kind of situation to occour?
> 
> Thanks again.
> 
> Regards,
> Gustavo
> 
> Greger V. Teigre escreveu:
> >No, the UAS (U2) shall answer with 200 OK to confirm that the call has been canceled and yes, it should be sent to U1.
> >Do you have an actual experienced problem or was the 200 OK the problem?
> >g-)
> >
> >Gustavo Passos Tourinho wrote:
> >>Hello,
> >>
> >>Im having some problems with cancelled calls. This is the scenario:
> >>
> >>U1                                     Proxy                                       U2
> >>
> >>INVITE   -->>>                                             <<--- 100 Trying
> >>                                         INVITE  -->>>
> >>                                                                            <<--- 100 Trying
> >>                               <<--- 100 Trying  CANCEL  ->>>                                              <<-- 200 Cancelling
> >>                                          CANCEL ->>               <<-- 180 Ringing
> >>                                <<-- 487 Cancelled
> >>                                <<-- 180 Ringing
> >>                                                                                                                                         <<-- 200 OK
> >>                                    (Wrong??)
> >>                                 <<-- 200 OK
> >>
> >>
> >>My problem is that after some time waiting for "ringing", the user cancel the call. Even that proxy responses "487" it still forward the late 200 OK.
> >>
> >>Should it forward? I guess not because the transaction was destroyed, right?
> >>
> >>Can it be a configuration problem on my ser.cfg ou it can be in t_relay implementation?
> >>
> >>Thanks in advanced.
> >>Regards,
> >>
> >>Gustavo                       _______________________________________________
> >>Serusers mailing list
> >>Serusers at lists.iptel.org
> >>http://lists.iptel.org/mailman/listinfo/serusers
> >>
> >>
> >
> 
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