Which log line do you get?  Also note that both of your log lines say "Matched transaction", but the condition is negated (it starts with an exclamation mark).

Also refer to the documentation for the function to see what happens when the ACK for a negative reply is matched.

https://kamailio.org/docs/modules/5.8.x/modules/tm#tm.f.t_check_trans

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---

From: Alexis Fidalgo via sr-users <sr-users@lists.kamailio.org>
Sent: Monday, December 23, 2024 4:16 PM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Cc: Alexis Fidalgo <alzrck@gmail.com>
Subject: [SR-Users] Re: help on how to get ACK

 

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Yes, i’ve been reading it when you mentioned the loose_route and has_totag() in a previous email.

        if(is_method("ACK")){
                if(!t_check_trans()){
                xlog("L_INFO","AAAA: MATCHED TRANSACTION\n");
                } else {
                xlog("L_INFO","BBBB: MATCHED TRANSACTION\n");
                }
                exit;
        }

(moving the exit; inside the else has same effect on my test)


> On 23 Dec 2024, at 6:49 PM, Alex Balashov via sr-users <sr-users@lists.kamailio.org> wrote:
>
> Look very carefully at how negative ACKs are handled here:
>
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fkamailio%2Fkamailio%2Fblob%2Fmaster%2Fetc%2Fkamailio.cfg%23L716&data=05%7C02%7Cbkaufman%40bcmone.com%7C344d8fe5f8604da6709608dd23a04195%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C638705893409762065%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=pWUV9HfUBdFYItGmXv9lpUOYmWXHJdrquEnfXWAl6Kg%3D&reserved=0
>
> -- Alex
>
>> On Dec 23, 2024, at 4:19 pm, Alexis Fidalgo via sr-users <sr-users@lists.kamailio.org> wrote:
>>
>> Hello all, moving just a bit aside of the http and async_http.
>>
>> After all the real useful and interesting thread on that topic what helped me, im facing a problem i cant deal with and need a hint at least.
>>
>> Scenario
>>
>> INVITE -> Kamailio
>>
>> on request_route
>> ...
>> if(is_method("INVITE")){
>> t_newtran();
>> http_async_query("http://nuc:8080", "HTTP_REPLY");
>> }
>> …
>>
>> Kamailio -> 100 - Trying
>>
>>
>> then
>>
>> route[HTTP_REPLY] {
>>   if ($http_ok) {
>>       xlog("L_INFO", "route[HTTP_REPLY]: status $http_rs\n");
>>       xlog("L_INFO", "route[HTTP_REPLY]: body   $http_rb\n");
>> t_reply(302,"Redirect");
>>   } else {
>>       xlog("L_INFO", "route[HTTP_REPLY]: error  $http_err)\n");
>>   }
>> }
>>
>> Kamailio -> 302 Redirect
>> ACK -> Kamailio
>>
>> This last ACK, how can i read it and use it to terminate the transaction? because Kamailio keeps transmitting the 302 message 3 more times until the transaction is finished by a timer
>>
>> 42(44) DEBUG: tm [t_reply.c:1723]: t_retransmit_reply(): reply retransmitted. buf=0x7f4c44f9d680: SIP/2.0 3..., shmem=0x7f4c3fce7900: SIP/2.0 3
>> 42(44) DEBUG: tm [t_reply.c:1723]: t_retransmit_reply(): reply retransmitted. buf=0x7f4c44f9d680: SIP/2.0 3..., shmem=0x7f4c3fce7900: SIP/2.0 3
>> 42(44) DEBUG: tm [t_reply.c:1723]: t_retransmit_reply(): reply retransmitted. buf=0x7f4c44f9d680: SIP/2.0 3..., shmem=0x7f4c3fce7900: SIP/2.0 3
>> 42(44) DEBUG: tm [timer.c:642]: wait_handler(): finished transaction: 0x7f4c3fcd35a0 (p:0x7f4c3fad85d0/n:0x7f4c3fad85d0)
>> 42(44) DEBUG: tm [h_table.c:133]: free_cell_helper(): freeing transaction 0x7f4c3fcd35a0 from timer.c:651
>>
>>
>> in request_route i have
>>
>> if(is_method("ACK")){
>> if(!t_check_trans()){
>> t_release();
>> }
>> exit;
>> }
>>
>>
>> __________________________________________________________
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>> Important: keep the mailing list in the recipients, do not reply only to the sender!
>
> --
> Alex Balashov
> Principal Consultant
> Evariste Systems LLC
> Web: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fevaristesys.com%2F&data=05%7C02%7Cbkaufman%40bcmone.com%7C344d8fe5f8604da6709608dd23a04195%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C638705893409783811%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=OjJMQi9y1SfE4Vkkbd58SiGGHACvEFYRohAxXKZaFW0%3D&reserved=0
> Tel: +1-706-510-6800
>
> __________________________________________________________
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> To unsubscribe send an email to sr-users-leave@lists.kamailio.org
> Important: keep the mailing list in the recipients, do not reply only to the sender!

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