[sr-dev] Transaction Matching Failed ACK & BYE

[Alex Balashov]

If you didn’t get the answer you wanted on the users list, posting to the dev list is not the socially correct alternative strategy. The dev list is for project development issues. Moreover, you are reposting an identical question, suggesting that you did not consider the answers you have already received on the users list them.

—
Sent from mobile, with due apologies for brevity and errors.

> On Mar 30, 2020, at 3:27 AM, egemen ulus <ulus_egemen at hotmail.com> wrote:
> 
> 
> Hi All,
> 
> I'm trying to establish a topology with Kamailio which is located between Asterisk and Outside.
> 
> My issue is "transaction matching failed" (t_check_trans failed). That means Kamailio does not recognise ACK & BYE message to forwards. I had a check on email list and google but found nothing.
> I'm using it with record_route.
> 
> SIP signalling and part of kamailio.cfg is below. Is there any suggestion?
> 
> 
> 
> route[WITHINDLG] {
> if (!has_totag()) return;
> if (loose_route()) {
> route(DLGURI);
> if (is_method("BYE")) {
> setflag(FLT_ACC); # do accounting ...
> setflag(FLT_ACCFAILED); # ... even if the transaction fails
> }
> else if ( is_method("ACK") ) {
> xlog("ack is came: $si:$sp\n");
> route(NATMANAGE);
> }
> else if ( is_method("NOTIFY") ) {
> record_route();
> }
> route(RELAY);
> exit;
> }
> if (is_method("SUBSCRIBE") && uri == myself) {
> route(PRESENCE);
> exit;
> }
> if ( is_method("ACK") ) {
> if ( t_check_trans() ) {
> route(RELAY);
> exit;
> } else {
> exit;
> }
> }
> sl_send_reply("404","Not here");
> exit;
> }
> 
> route[NATMANAGE] {
> #!ifdef WITH_NAT
> if (is_request()) {
> if(has_totag()) {
> if(check_route_param("nat=yes")) {
> setbflag(FLB_NATB);
> }
> }
> }
> 
> route(RTPPROXY);
> 
> if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB)))
> return;
> if (is_request()) {
> if (!has_totag()) {
> if(t_is_branch_route()) {
> add_rr_param(";nat=yes");
> }
> }
> }
> if (is_reply()) {
> if(isbflagset(FLB_NATB)) {
> if(is_first_hop())
> set_contact_alias();
> }
> }
> #!endif
> return;
> }
> 
> 
> 
> 
> 
> Asterisk > Kamailio
> 
> INVITE sip:user at outside_ip SIP/2.0
> Via: SIP/2.0/UDP asterisk_ip:5060;branch=z9hG4bK1b56cce0
> Max-Forwards: 70
> From: "KUYRUK" <sip:0553847aaaa at asterisk_ip>;tag=as3dde7cdb
> To: <sip:user at outside_ip>
> Contact: <sip:0553847aaaa at asterisk_ip:5060>
> Call-ID: 62a480bf71d2a1aa0ec94b454cd98945 at asterisk_ip:5060
> CSeq: 102 INVITE
> User-Agent: Asterisk PBX 1.8.32.3
> 
> 
> Kamailio > Outside
> 
> INVITE sip:user at outside_ip SIP/2.0
> Record-Route: <sip:kamailio_ip;lr;nat=yes>
> Via: SIP/2.0/UDP kamailio_ip;branch=z9hG4bK7b3f.8e4716eeea4b0dc45cc51d21b5aded57.0
> Via: SIP/2.0/UDP asterisk_ip:5060;rport=5060;branch=z9hG4bK1b56cce0
> From: "KUYRUK" <sip:0553847aaaa at asterisk_ip>;tag=as3dde7cdb
> To: <sip:user at outside_ip>
> Contact: <sip:0553847aaaa at asterisk_ip:5060;alias=asterisk_ip~5060~1>
> Call-ID: 62a480bf71d2a1aa0ec94b454cd98945 at asterisk_ip:5060
> CSeq: 102 INVITE
> User-Agent: Asterisk PBX 1.8.32.3
> 
> 
> Outside > Kamailio
> 
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP kamailio_ip;branch=z9hG4bK7b3f.8e4716eeea4b0dc45cc51d21b5aded57.0
> Via: SIP/2.0/UDP asterisk_ip:5060;rport=5060;branch=z9hG4bK1b56cce0
> From: "KUYRUK" <sip:0553847aaaa at asterisk_ip>;tag=as3dde7cdb
> To: <sip:user at outside_ip>;tag=kv8iml6ur9
> Call-ID: 62a480bf71d2a1aa0ec94b454cd98945 at asterisk_ip:5060
> CSeq: 102 INVITE
> Record-Route: <sip:kamailio_ip;lr;nat=yes>
> Contact: <sip:user at outside_ip:5060;alias=x.x.x.x~18005~6;transport=udp>
> 
> 
> Kamailio > Asterisk
> 
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP asterisk_ip:5060;rport=5060;branch=z9hG4bK1b56cce0
> From: "KUYRUK" <sip:0553847aaaa at asterisk_ip>;tag=as3dde7cdb
> To: <sip:user at outside_ip>;tag=kv8iml6ur9
> Call-ID: 62a480bf71d2a1aa0ec94b454cd98945 at asterisk_ip:5060
> CSeq: 102 INVITE
> Record-Route: <sip:kamailio_ip;lr;nat=yes>
> Contact: <sip:user at outside_ip:5060;alias=x.x.x.x~18005~6;transport=udp>
> 
> 
> Asterisk > Kamailio THIS ACK IS NOT ROUTED TO OUTSIDE BY KAMAILIO!!
> 
> ACK sip:user at outside_ip:5060;alias=x.x.x.x~18005~6;transport=udp SIP/2.0
> Via: SIP/2.0/UDP asterisk_ip:5060;branch=z9hG4bK73366924
> Route: <sip:kamailio_ip;lr;nat=yes>
> From: "KUYRUK" <sip:0553847aaaa at asterisk_ip>;tag=as3dde7cdb
> To: <sip:user at outside_ip>;tag=kv8iml6ur9
> Contact: <sip:0553847aaaa at asterisk_ip:5060>
> Call-ID: 62a480bf71d2a1aa0ec94b454cd98945 at asterisk_ip:5060
> CSeq: 102 ACK
> User-Agent: Asterisk PBX 1.8.32.3
> 
> Get Outlook for Android
> _______________________________________________
> Kamailio (SER) - Development Mailing List
> sr-dev at lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev
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