[OpenSIPS-Users] CANCEL & INVITE

[Richard Revels]

I'm going to resurrect this as I've noticed that opensips 2.4.6 sends
CANCEL for branches it never got a provisional response for.  Was this
changed intentionally?

Also, it looks like the discussion I am responding on was about opensips
1.5 but if any testing is needed around fail-over scenarios I expect to be
doing some of that over the next few days.  Just let me know what still
needs to be looked at and I'll try to get it in.


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Richard Revels  •  System Architect II

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On Tue, Apr 5, 2011 at 3:33 PM Bogdan-Andrei Iancu <bogdan at opensips.org>
wrote:

> Hi guys,
>
> Actually it will be great to have that patch tested to know for sure if
> the problem is solved. I never got a 100% confirmation from Andrew, but
> maybe Piotr can test and confirm.
>
> Thanks and regards,
> Bogdan
>
> On 04/05/2011 04:58 PM, Andrew Pogrebennyk wrote:
> > Hi Piotr,
> > This sounds familiar to the problem I experienced some time ago - make
> > sure to check comments here:
> >
> https://sourceforge.net/tracker/?func=detail&atid=1086410&aid=2940556&group_id=232389
> >
> > I haven't been able to replicate that setup to confirm that the
> > attached patch works. You are welcome to try it though :) Note RFC
> > states it clearly that if no response has been received from the UAS
> > at all, we should not attempt to send a CANCEL there.
> >
> > But it seems that in your case you received some provisional response
> > so the issue has to do with the order in which CANCEL is fired -
> > exactly what the patch is intended to fix.
> >
> > On 05.04.2011 15:56, Piotr Sobolewski wrote:
> >> I'm having problem with specific gateway to which OpenSIPS sends
> >> INVITE and then another INVITE (CallForward on no Aswer).
> >> The  problem is when after sending first INVITE to gateway (without
> >> getting final response), OpenSIPS hits failure route and then sends
> >> another INVITE (with different RURI) toward gateway before CANCEL is
> >> sent, so the gateway responds to second INVITE with "482 Request
> >> merged" (and gateway does not attempt to make second connection).
> >> Is there a way to send CANCEL before sending second INVITE ?
> >
>
>
> --
> Bogdan-Andrei Iancu
> OpenSIPS eBootcamp - 2nd of May 2011
> OpenSIPS solutions and "know-how"
>
>
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>
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