Well, in my case I have:
route{
> ...
> if ( is_method("ACK") ) {
> if ( t_check_trans() ) {
> # no loose-route, but stateful ACK;
> # must be an ACK after a 487
> # or e.g. 404 from upstream server
> xlog("L_INFO","ACK - t_check_trans \n");
> route(RELAY);
> exit;
> } else {
> # ACK without matching transaction ... ignore and discard
> xlog("L_INFO","ACK without matching transaction \n");
> exit;
> }
> }
> }
> route[RELAY] {
> xlog("L_INFO", " ******** RELAY *******");
> xlog("L_INFO", "RELAY - $rm to $si responding back to $su");
> t_on_failure("FAILED_RELAY");
> t_on_reply("MANAGE_REPLY");
> if (is_method("INVITE"))
> send_reply("300", "Multiple Choices");
> exit;
> }
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3356440-1-0
SIP/2.0 100 trying -- your call is important to us
Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3356440-1-0
(here I am testing a HTTP failure test case)
SIP/2.0 503 No Connection to HTTP API
Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3356440-1-0
ACK sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3356440-1-0
But after this ACK, Kamailio sends:
SIP/2.0 500 I'm terribly sorry, server error occurred (1/TM)
Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3356440-1-0
Logs are weird too (debug = 3)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: <core>
[core/parser/msg_parser.c:91]: get_hdr_field(): found end of header
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/receive.c:263]: ksr_evrt_pre_routing():
event route core:pre-routing not defined
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/receive.c:474]: receive_msg(): preparing
to run routing scripts...
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} sl [sl_funcs.c:472]: sl_filter_ACK(): SL local ACK
found -> dropping it!
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/usr_avp.c:654]: destroy_avp_list():
destroying list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/usr_avp.c:654]: destroy_avp_list():
destroying list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/usr_avp.c:654]: destroy_avp_list():
destroying list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/usr_avp.c:654]: destroy_avp_list():
destroying list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/usr_avp.c:654]: destroy_avp_list():
destroying list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/usr_avp.c:654]: destroy_avp_list():
destroying list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/xavp.c:630]: xavp_destroy_list():
destroying xavp list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/xavp.c:630]: xavp_destroy_list():
destroying xavp list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/xavp.c:630]: xavp_destroy_list():
destroying xavp list (nil)
Dec 23 22:59:38 kamailio1 kamailio[4060752]: DEBUG: {1 1 ACK
[email protected]} <core> [core/receive.c:635]: receive_msg(): cleaning up
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: <core> [db_query.c:72]:
db_do_submit_query(): submitted query: delete from `dialog` where
`hash_entry`=3272 AND `hash_id`=10103, result 0
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: db_cluster
[dbcl_api.c:663]: db_cluster_use_table(): use table (dialog_vars) - cluster
[k1]
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: db_cluster
[dbcl_api.c:670]: db_cluster_use_table(): set read table (dialog_vars) -
cluster [k1] (9/0)
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: db_cluster
[dbcl_api.c:680]: db_cluster_use_table(): set write table (dialog_vars) -
cluster [k1] (9/0)
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: db_cluster
[dbcl_api.c:570]: db_cluster_delete(): executing db cluster delete command
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: db_cluster
[dbcl_api.c:571]: db_cluster_delete(): round robin operation - cluster [k1]
(9/0)
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: <core> [db_query.c:72]:
db_do_submit_query(): submitted query: delete from `dialog_vars` where
`hash_entry`=3272 AND `hash_id`=10103, result 0
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: dialog
[dlg_db_handler.c:759]: remove_dialog_from_db(): callid was
[email protected]
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: tm [h_table.c:551]:
tm_xdata_swap(): restore X/AVPs msg context from txdata
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: tm [t_reply.c:1782]:
cleanup_uac_timers(): RETR/FR timers reset
*Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: tm [t_reply.c:634]:
_reply_light(): reply sent out - buf=0x7f4903fd57d0: SIP/2.0 500 I'm
terr... shmem=0x7f48c27177a0: SIP/2.0 500 I'm terr*
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: tm [t_funcs.c:133]:
put_on_wait(): put T [0x7f48c271cda0] on wait
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: tm [t_reply.c:650]:
_reply_light(): finished
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: http_async_client
[async_http.h:153]: free_async_query(): freeing query 0x7f48c27229b0
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: http_async_client
[http_multi.c:661]: check_multi_info(): reply: [428] HTTP/1.0 428
PRECONDITION REQUIRED#015#012Content-Type: text/html;
charset=utf-8#015#012Content-Length: 138#015#012Server: Werkzeug/2.0.3
Python/3.9.16#015#012Date: Mon, 23 Dec 2024 22:59:09
GMT#015#012#015#012<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2
Final//EN">#012<title>428 Precondition Required</title>#012<h1>Precondition
Required</h1>#012<p>{}</p>#012 [312]
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: http_async_client
[http_multi.c:668]: check_multi_info(): cleaning up cell 0x7f48c2722d30
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: http_async_client
[http_multi.c:673]: check_multi_info(): Removing handle 0x7f48c2717e80
Dec 23 22:59:38 kamailio1 kamailio[4060844]: DEBUG: http_async_client
[http_multi.c:150]: event_cb(): last transfer done, kill timeout
Dec 23 22:59:39 kamailio1 kamailio[4060839]: DEBUG: tm [t_funcs.c:133]:
put_on_wait(): put T [0x7f48c271cda0] on wait
Dec 23 22:59:39 kamailio1 kamailio[4060839]: DEBUG: <core>
[core/timer.c:555]: timer_add_safe(): timer_add called on an active timer
0x7f48c271ce58 (0x7f48c2225bc0, 0x7f48c2225bc0), flags 201
Dec 23 22:59:39 kamailio1 kamailio[4060839]: DEBUG: tm [t_funcs.c:156]:
put_on_wait(): transaction 0x7f48c271cda0 already on wait
Running same SIP Invite from SIPp but with test case where HTTP API returns
a valid (200) response, everything works fine!
Atenciosamente / Kind Regards / Cordialement / Un saludo,
*Sérgio Charrua*
On Mon, Dec 23, 2024 at 11:49 PM Ben Kaufman via sr-users <
[email protected]> wrote:
> 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
>
> *Kaufman*
>
> *Senior Voice Engineer *
>
>
> E: [email protected]
>
>
>
>
>
>
> SIP.US Client Support: 800.566.9810 *|* SIPTRUNK Client Support:
> 800.250.6510 *|* Flowroute Client Support: 855.356.9768
> [image: img] <https://www.sip.us/>
> [image: img] <https://www.siptrunk.com/>
> *[image: img] <https://www.flowroute.com/>*
>
>
> ------------------------------
> *From:* Alexis Fidalgo via sr-users <[email protected]>
> *Sent:* Monday, December 23, 2024 4:16 PM
> *To:* Kamailio (SER) - Users Mailing List <[email protected]>
> *Cc:* Alexis Fidalgo <[email protected]>
> *Subject:* [SR-Users] Re: help on how to get ACK
>
> CAUTION: This email originated from outside the organization. Do not click
> links or open attachments unless you recognize the sender and know the
> content is safe.
>
>
> 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 <
> [email protected]> 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
> <https://github.com/kamailio/kamailio/blob/master/etc/kamailio.cfg#L716>
> >
> > -- Alex
> >
> >> On Dec 23, 2024, at 4:19 pm, Alexis Fidalgo via sr-users <
> [email protected]> 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;
> >> }
> >>
> >>
> >> __________________________________________________________
> >> Kamailio - Users Mailing List - Non Commercial Discussions --
> [email protected]
> >> To unsubscribe send an email to [email protected]
> >> 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
> <https://evaristesys.com/>
> > Tel: +1-706-510-6800
> >
> > __________________________________________________________
> > Kamailio - Users Mailing List - Non Commercial Discussions --
> [email protected]
> > To unsubscribe send an email to [email protected]
> > Important: keep the mailing list in the recipients, do not reply only to
> the sender!
>
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions --
> [email protected]
> To unsubscribe send an email to [email protected]
> Important: keep the mailing list in the recipients, do not reply only to
> the sender!
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions --
> [email protected]
> To unsubscribe send an email to [email protected]
> Important: keep the mailing list in the recipients, do not reply only to
> the sender!
>
__________________________________________________________
Kamailio - Users Mailing List - Non Commercial Discussions --
[email protected]
To unsubscribe send an email to [email protected]
Important: keep the mailing list in the recipients, do not reply only to the
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