It would be relevant to see the 200ok as received by each hop in the call path. Also, be sure you don't use fix_nated_contact() on the proxy if it is not the first node next to endpoint -- anyhow it is recommended to use set_contact_alias().
As a clafication, do you use tcp/tls between Kamailio2 and Asterisk? Cheers, Daniel On 12/04/16 22:12, Yasin CANER wrote: > Hello; > before sending this email i searched on google and doesnt solve > this issue. all call flows are correct but one call that this isnt > working right. it sends to _wrong port_ to ACK for 200 OK. i tried to > fix contact header or remove contact header but it wasnt work. i > looked at ietf for ACK and couldnt figure out why it happens. > Does it need add a record route or remove Contact Header for every ack ? > > > Thanks for help. > > i figure out Kamailio-2 adds a Route header to ACK packet for sending > Kamailio-1:5060, even if it doesnt add any command for it in cfg. > > Here is call flow > > Asterisk and Kamailio is on the same ip and machine and public ip. > different are ports. Kamailio-1 is another machine > > > INVITE : UAC1-----> Kamailio-1:5060----->Kamailio-2:5061--->Asterisk:5060 > > 200 OK: UAC1<----- Kamailio-1:5060<-----Kamailio-2:5061<---Asterisk:5060 > > ACK : UAC1-----> Kamailio-1:5060----->Kamailio-2:5061--->Asterisk:10432 > > 200 OK: UAC1<----- Kamailio-1:5060<-----Kamailio-2:5061<---Asterisk:5060 > > ACK : UAC1-----> Kamailio-1:5060----->Kamailio-2:5061--->Asterisk:10432 > > Retransmission....... > > > Here is ACK packet, is it about_port on RU?_ > > > Asteriskip:5060----------->Kamailio2-ip:5061 > > SIP/2.0 200 OK > Via: SIP/2.0/UDP > kamailio2-ip:5061;branch=z9hG4bK4d2f.837f45483db59574c4dd70f70f8d0099.0;received=kamailio2-ip;rport=5061 > Via: SIP/2.0/UDP > kamailio1-ip-main;branch=z9hG4bK4d2f.fb781e8caa5f96426c82530a23c0cc97.0 > Via: SIP/2.0/UDP > uacip:5060;received=uacip;branch=z9hG4bK143c7384;rport=10432 > Record-Route: > <sip:kamailio2-ip:5061;lr;ftag=as1c529e28;did=304.35c1;vsf=AAAAAAoBAQMLBQ4GAQN2A3kDFgQYABYeGRoyMDM-> > Record-Route: <sip:kamailio1-ip-main;lr;ftag=as1c529e28> > From: 903122977162 <sip:903122977162@kamailio2-ip>;tag=as1c529e28 > To: <sip:03129110...@tstxyz.netgsm.com.tr>;tag=as39358508 > Call-ID: 169f342556f4e956445dfe0e2ee8ecf2@uacip:5060 > CSeq: 103 INVITE > Server: sipgw2 > Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, > INFO, PUBLISH, MESSAGE > Supported: replaces, timer > Session-Expires: 1800;refresher=uas > Contact: <sip:10213129110911@kamailio2-ip:5060> > Content-Type: application/sdp > Require: timer > Content-Length: 305 > > v=0 > o=root 455426546 455426546 IN IP4 kamailio2-ip > s=Asterisk PBX 11.21.2 > c=IN IP4 kamailio2-ip > t=0 0 > m=audio 15926 RTP/AVP 18 8 0 101 > a=rtpmap:18 G729/8000 > a=fmtp:18 annexb=no > a=rtpmap:8 PCMA/8000 > a=rtpmap:0 PCMU/8000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-16 > a=ptime:20 > > Kamailio2-ip:5061----> Asterisk:10432 > ACK sip:10213129110911@kamailio2-ip:10432 SIP/2.0 > Via: SIP/2.0/UDP > kamailio2-ip:5061;branch=z9hG4bK4d2f.deb7bd96617c7067212dbc1673a216d2.0 > Via: SIP/2.0/UDP > kamailio1-ip-main;branch=z9hG4bK4d2f.acd6ee83df5babb9e8f53268a4b1b948.0 > Via: SIP/2.0/UDP > uacip:5060;received=uacip;branch=z9hG4bK59e2e846;rport=10432 > Max-Forwards: 68 > From: <sip:903122977162@kamailio2-ip>;tag=as1c529e28 > To: <sip:03129110...@tstxyz.netgsm.com.tr>;tag=as39358508 > Call-ID: 169f342556f4e956445dfe0e2ee8ecf2@uacip:5060 > CSeq: 103 ACK > User-Agent: Asterisk PBX 11.21.2 > Content-Length: 0 > > > > ietf : > > If the INVITE request whose response is being acknowledged had Route > header fields, those header fields MUST appear in the ACK. This is > to ensure that the ACK can be routed properly through any downstream > stateless proxies. > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com
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