[sr-dev] Unwanted INVITE while using TMCB_ACK_NEG_IN callback

[Daniel-Constantin Mierla]

For the records, this is now discussed on the issue tracker:

  - https://github.com/kamailio/kamailio/issues/1871

Cheers,
Daniel

On 26.02.19 22:31, Henning Westerholt wrote:
> Am Dienstag, 26. Februar 2019, 18:10:48 CET schrieb Ionut Razvan Ionita:
>>    My name is Ionut and I am a new developer in VoIP dev team in 1&1. Maybe
>> you can help me with the following problem. I have the following scenario:
>> UAC sends invite to UAS via Kamailio proxy, UAS responds with 491. I am
>> trying to catch the ACK from the UAC in siptrace module using
>> TMCB_ACK_NEG_IN. I successfully trace this message but it's not the only
>> one. I get an INVITE request which I don't want to trace since the callback
>> is called ACK_NEG_IN. From my understanding, this call is issued right
>> after the ACK is sent to the UAS, which, for me, doesn't seem to be
>> correct, since the callback should trace in ACKs not outs. TM code that's
>> calling this callback is in t_reply.c:2291. Is this a bug? I can fix this
>> issue easily in my code by checking whether or not the current message is
>> an ACK in siptrace but it would be great if we would work for a fix to this
>> issue.
> Hello Ionut,
>
> tm fairly is complex, difficult to comment without more context and digging 
> deeper into it.
>
> Can you reproduce this easily or does it happens only in special cases? I 
> would suggest to create an issue on our github tracker about it, with some 
> additional information as suggested in the bug template there.
>
> Best regards,
>
> Henning
>
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