[sr-dev] [SR-Users] DB accounting missing if t_newtran() is called explicitly

[Andrew Pogrebennyk]

Hi Daniel,

No, I don't. Thanks for the tip. Could you advice where t_flush_flags()
should be placed? I tried in branch_route and immediately before
t_relay(), it didn't help..

On 09/26/2012 05:53 PM, Daniel-Constantin Mierla wrote:
> Hello,
> 
> do you use t_flush_flags()?
> 
> http://kamailio.org/docs/modules/3.3.x/modules_k/tmx.html#id2543767
> 
> Cheers,
> Daniel
> 
> On 9/26/12 3:30 PM, Andrew Pogrebennyk wrote:
>> Hi,
>>
>> I have found recently that in order to detect retransmits I have to
>> create a transaction explicitly when the request comes in:
>>          force_rport();
>>          if(!t_check_trans())
>>                  t_newtran();
>>          sl_send_reply("100", "Trying");
>>          xlog("L_INFO", "New request - $ci\n");
>>
>> it appears like there are carriers or UAs that do not honor the T1
>> retransmission interval retransmit the INVITE sooner than proxy creates
>> a transaction in t_relay(). And since we are counting concurrent calls,
>> we count the same call multiple times, which is not good.
>>
>> But with this patch we've faced another sporadic problem - if the
>> transaction is created beforehand the accounting record is lost.. we use
>> acc_db mode and set flag to account the transaction. And there are no
>> errors in kamailio log but no insert into acc in mysql binlog either. I
>> wasn't successful reproducing it in the lab systems with identical setup.
>>
>> Is anybody here perhaps aware of some limitation in acc module or
>> callbacks which makes a transaction created beforehand not accountable?
>>
>> On a related note, it could make sense to create a transaction
>> implicitly if dlg_manage() is called to avoid counting same call many
>> times, I just don't know yet how common this issue is in real life.
>>
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