[OpenSIPS-Users] Cancel branch before failover on timeout

[Ronald Cepres]

Bogdan,

I am currently using CDR based. Does it mean that if I use transaction
based, we will have more accurate resulting CDRs?

Thanks.


On Mon, Jul 8, 2013 at 10:05 PM, Bogdan-Andrei Iancu <bogdan at opensips.org>wrote:

> **
> Hi Ronald,
>
> I never experienced such race (with multiple 200 oks on different
> branches)....But depending on what kind of accounting you do:
>  - transaction based = you will get 2 START records and 2 STOP records,
> but with different TO tags....
>  - cdr based = you will get the values of the last 200 OK (which will
> overwrite the values of the first one)..
>
> I guess the ACC module was never designed to deal with such scenarios.
>
> Regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>
>
> On 07/06/2013 02:25 AM, Ronald Cepres wrote:
>
> Bogdan,
>
>  Understood, and thanks for the info.
>
>  However, I have some concerns with regards to the resulting CDR using
> the acc and drouting modules. I think if both GWs sent 200 OK at the same
> time, it would result in a CDR with the values of AVPs specified by
> carrier_id_avp and gw_id_avp drouting parameters set only to GW2. Also, if
> GW1 is the last GW in the gwlist and this type of race condition happens,
> the value of the AVPs will be set to blank.
>
>
>  On Fri, Jul 5, 2013 at 2:15 AM, Bogdan-Andrei Iancu <bogdan at opensips.org>wrote:
>
>>  Hello Ronald,
>>
>> If the first GW sent any reply before the timeout, than OpenSIPS will
>> cancel it before hitting the failure route. If no reply at all sent by GW1,
>> OpenSIPS will hit the failure route on timeout without canceling. If after
>> this point (call send to GW2) first GW sends a reply :
>>     1) if a provisional reply (<200), it will be canceled on the spot
>>     2) if a 200 ok reply -> it will be accepted and fwd to calling device
>>         a) if the GW2 did not send a 200 OK, it will be canceled
>>         b) if GW2 also sent a 200 OK in the same time, both 200 OK will
>> be sent to calling device and it that device will decide what call to keep
>>
>> Regards,
>>
>> Bogdan-Andrei Iancu
>> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>>
>>
>>   On 07/04/2013 07:41 PM, Ronald Cepres wrote:
>>
>> Bogdan,
>>
>> Thanks for the informative reply.
>>
>> What I really want to solve is a problem I encounter when the first GW
>> doesnt respond after a defined timeout then Opensips does failover to next
>> GW. A few seconds after the call is routed to second  GW, the first GW
>> responds with 200 OK, which may cause problems. It seems that the first GW
>> has a slow response time.
>>
>> The solution I am thinking of to prevent this is to send a cancel to the
>> first GW before doing failover to next gateway. Does this make sense or is
>> there a better solution?
>>
>> Thanks.
>>
>> -Ronald
>> On Jul 4, 2013 11:58 PM, "Bogdan-Andrei Iancu" <bogdan at opensips.org>
>> wrote:
>>
>>>  Hello Ronald,
>>>
>>> When you hit the failure route, there is no ongoing branch left (doesn't
>>> matter how many you previously created) - so you should not worry about
>>> this.
>>>
>>> By SIP definition, a transaction fails (and OpenSIPS gets into failure
>>> route) only when all branches failed.
>>>
>>> Regards,
>>>
>>> Bogdan-Andrei Iancu
>>> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>>>
>>>
>>> On 07/03/2013 10:43 PM, Ronald Cepres wrote:
>>>
>>> Hi all,
>>>
>>>  Is there a way I can cancel a pending branch before doing a fail-over
>>> to next gateway (due to timeout from previous gateway)? This way I can make
>>> sure that the call to the previous gateway will not go through anymore
>>> after fail-over to the next gateway, thus preventing us "double-charged"
>>> situations if the previous gateway and the new gateway both answered the
>>> call.
>>>
>>>  Thanks in advance.
>>>
>>>
>>>  --
>>>
>>> Regards,
>>>
>>>  Ronald
>>>
>>>
>>> _______________________________________________
>>> Users mailing listUsers at lists.opensips.orghttp://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>
>>>
>
>
>  --
>
> Regards,
>
>  Ronald Cepres
>
>


-- 

Ronald Cepres
Network Operations Center
Net Voip Communications, Inc.


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