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On Mar 30, 2020, at 3:27 AM, egemen ulus ulus_egemen@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@outside_ip SIP/2.0 Via: SIP/2.0/UDP asterisk_ip:5060;branch=z9hG4bK1b56cce0 Max-Forwards: 70 From: "KUYRUK" sip:0553847aaaa@asterisk_ip;tag=as3dde7cdb To: sip:user@outside_ip Contact: sip:0553847aaaa@asterisk_ip:5060 Call-ID: 62a480bf71d2a1aa0ec94b454cd98945@asterisk_ip:5060 CSeq: 102 INVITE User-Agent: Asterisk PBX 1.8.32.3
Kamailio > Outside
INVITE sip:user@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@asterisk_ip;tag=as3dde7cdb To: sip:user@outside_ip Contact: sip:0553847aaaa@asterisk_ip:5060;alias=asterisk_ip~5060~1 Call-ID: 62a480bf71d2a1aa0ec94b454cd98945@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@asterisk_ip;tag=as3dde7cdb To: sip:user@outside_ip;tag=kv8iml6ur9 Call-ID: 62a480bf71d2a1aa0ec94b454cd98945@asterisk_ip:5060 CSeq: 102 INVITE Record-Route: sip:kamailio_ip;lr;nat=yes Contact: sip:user@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@asterisk_ip;tag=as3dde7cdb To: sip:user@outside_ip;tag=kv8iml6ur9 Call-ID: 62a480bf71d2a1aa0ec94b454cd98945@asterisk_ip:5060 CSeq: 102 INVITE Record-Route: sip:kamailio_ip;lr;nat=yes Contact: sip:user@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@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@asterisk_ip;tag=as3dde7cdb To: sip:user@outside_ip;tag=kv8iml6ur9 Contact: sip:0553847aaaa@asterisk_ip:5060 Call-ID: 62a480bf71d2a1aa0ec94b454cd98945@asterisk_ip:5060 CSeq: 102 ACK User-Agent: Asterisk PBX 1.8.32.3
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