[SR-Users] Re: help on how to get ACK

Hi ! I have the exact same issue as Alexis. This is my SIP flow (which I believe must be very similar, if not identical, to Alexis' ): 10.20.0.1:5060 10.20.20.1:5060 ──────────┬───────── ──────────┬───────── 19:49:35.432327 │ INVITE (SDP) │ +0.007536 │ ──────────────────────────> │ 19:49:35.439863 │ 100 trying -- your call is │ +0.006997 │ <────────────────────────── │ 19:49:35.446860 │ 300 SL - Multiple Choices │ +0.001942 │ <────────────────────────── │ 19:49:35.448802 │ ACK │ │ ──────────────────────────> │ │ │ INVITE sip:1@10.20.20.1:5060 SIP/2.0 Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3147164-1-0 From: sipp <sip:sipp@10.20.0.1:5060>;tag=1 To: <sip:1@10.20.20.1:5060Call-ID: 1-3147164(a)10.20.0.1 CSeq: 1 INVITE Contact: sip:sipp@10.20.0.1:5060;transport=UDPMax-Forwards: 70 Subject: Performance Test Content-Type: application/sdp User-Agent: SIPp Session-Expires: 3600;refresher=uas Supported: replaces, timer Content-Length: 129 v=0 o=user1 53655765 2353687637 IN IP4 10.20.0.1 s=- c=IN IP4 10.20.0.1 t=0 0 m=audio 6000 RTP/AVP 0 a=rtpmap:0 PCMU/8000 SIP/2.0 100 trying -- your call is important to us Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3147164-1-0 From: sipp <sip:sipp@10.20.0.1:5060>;tag=1 To: <sip:1@10.20.20.1:5060Call-ID: 1-3147164(a)10.20.0.1 CSeq: 1 INVITE Server: kamailio (5.8.2 (x86_64/linux)) Content-Length: 0 SIP/2.0 300 - Multiple Choices Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3147164-1-0 From: sipp <sip:sipp@10.20.0.1:5060>;tag=1 To: <sip:1@10.20.20.1:5060>;tag=d360f2f6fe5d9cd3912155e609771cc6-f406b8d3 Call-ID: 1-3147164(a)10.20.0.1 CSeq: 1 INVITE Contact: < sip:service@10.20.0.3:5060?P-Asserted-Identity=%2216001%22%3Csip%3A16001%3Bverstat%3DTN-Validation-Passed%4010.20.0.2%3A5060%3E Server: kamailio (5.8.2 (x86_64/linux)) Content-Length: 0 (The above 300 - Multiple Choice message has a new Contact header, that will be used by SBC to redirect the call somewhere else) ACK sip:1@10.20.20.1:5060 SIP/2.0 Via: SIP/2.0/UDP 10.20.0.1:5060;branch=z9hG4bK-3147164-1-3 Max-Forwards: 70 From: <sip:sipp@10.20.0.1:5060>;tag=1 To: <sip:1@10.20.20.1:5060>;tag=d360f2f6fe5d9cd3912155e609771cc6-f406b8d3 Contact: <sip:sipp@10.20.0.1:5060Call-ID: 1-3147164(a)10.20.0.1 CSeq: 1 ACK User-Agent: SIPp Content-Length: 0 From this point, Kamailio will re-send the 300 Multiple Choice message, repeating until timeout... Atenciosamente / Kind Regards / Cordialement / Un saludo, *Sérgio Charrua* On Mon, Dec 23, 2024 at 11:05 PM Ben Kaufman via sr-users < sr-users(a)lists.kamailio.org&gt; wrote: > Does your 3xx message have a Contact, and does that Contact URI match the > RURI in your ACK? > *Kaufman* > *Senior Voice Engineer * > E: bkaufman(a)bcmone.com > 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 &lt;sr-users(a)lists.kamailio.org> *Sent:* Monday, December 23, 2024 3:19 PM > *To:* Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org> *Cc:* Alexis Fidalgo &lt;alzrck(a)gmail.com> *Subject:* [SR-Users] 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. > 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 -- > sr-users(a)lists.kamailio.org > To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to > the sender! > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions -- > sr-users(a)lists.kamailio.org > To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to > the sender!