Hello, is the KAMAILIO_FQDN set as local domain for Kamailio (via alias parameter or domain module+register myself)?
Cheers, Daniel On 07.05.21 11:17, Igor Olhovskiy wrote: > > Hello, > > I saw there are some topics on this already and carefully walked > through all of them, but can't solve following issue. > > For a reason I do need that in Record-Route header sent to endpoint > would present FQDN. If it matters, it's UDP/WSS conversion done on > Kamailio. > > So, scheme is quite simple > > Enpoint A ->UDP-> Kamailio ->WSS-> Endpoint B (NAT) > > Main issue here, that if in Record-Route headers it's FQDN, but not IP > addresses, on a new transactions with a dialog (ACK on 200, PRACK, > BYE), Kamailio*loose_route()* function resolves address of destination > not current dialog, but actual R-URI (or itself, if R-URI is something > from WebRTC world) that is not correct due to NAT. > > If in RR headers IP addresses are present - all is working as expected. > > As an example (RR with FQDN) > > B answers 200 > > SIP/2.0 200 OK > Record-Route: > <sip:KAMAILIO_FQDN:8089;transport=ws;r2=on;lr=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss> > Record-Route: > <sip:KAMAILIO_FQDN;r2=on;lr=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss> > Via: SIP/2.0/UDP <A_IP_ADDRESS>:5060;received=A IP > ADDRESS;rport=5060;branch=z9hG4bKPj67fb6d86-97d7-4231-995b-e54b0f62881e > To: <sip:88290@<KAMAILIO_FQDN>>;tag=hvra7mj3q0 > From: > <sip:+XXXX7688881@<KAMAILIO_FQDN>>;tag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d > Call-ID: 46f44741-d155-4dd5-8fd8-78e540fc1acb > CSeq: 18326 INVITE > Contact: <sip:88290@toleivu2gdbh.invalid;transport=wss> > Allow: ACK,CANCEL,INVITE,MESSAGE,BYE,OPTIONS,INFO,NOTIFY,REFER > Supported: outbound > Content-Type: application/sdp > Content-Length: 817 > > > ACK looks like > > ACK sip:88290@toleivu2gdbh.invalid;transport=wss SIP/2.0 > Via: SIP/2.0/UDP > A_IP_ADDRESS:5060;rport;branch=z9hG4bKPj8d05548a-91ef-4332-8617-32f8eeebf8f2 > From: <sip:88881@A_IP_ADDRESS>;tag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d > To: <sip:88290@KAMAILIO_FQDN>;tag=hvra7mj3q0 > Call-ID: 46f44741-d155-4dd5-8fd8-78e540fc1acb > CSeq: 18326 ACK > Route: > <sip:FQDN;lr;r2=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss> > Route: > <sip:FQDN:8089;transport=ws;lr;r2=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss> > Max-Forwards: 70 > User-Agent: Asterisk PBX 13.33.0 > Content-Length: 0 > > And Kamailio on *loose_route()* loops ACK to itself. (with result of > function == 1) > > In a case if in Record-Route/Route headers just IP address of Kamailio > present, all works as expected, but it's not really behavior I want to > achieve. > > I've tried to play with *record_route_preset("...")* specifying only > WSS part (as suggested in > https://skalatan.de/de/blog/kamailio-sbc-teams) with FQDN, but no luck. > > Also wanted to try approach using record_route_preset() function in > branch route, but it was working only with first branch, not affecting > others (but I assume having different RR headers across branches is > not a good idea) > > -- > Regards, > Igor > > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions > * sr-users@lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to the > sender! > Edit mailing list options or unsubscribe: > * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio Advanced Training - Online May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone) * https://www.asipto.com/sw/kamailio-advanced-training-online/
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