Re: [SR-Users] loose_route() and FQDN

Daniel, Seems to be it's really the case, but with other function With FQDN in RR is_first_hop() is not acting correctly for reply. For incoming SIP replies, it means that top Record-Route URI is 'myself' and source address is not matching it But in Record-Route we have "myself", but *is_first_hop()* returning 0. Thanks! Regards, Igor On 07.05.2021 14:22, Daniel-Constantin Mierla wrote: OK, because looping was something that should not have happened in this case. Then the problem is that you do not do nat-traversal-like processing for websocket/webrtc traffic. You have to use set_contact_alias() + handle_ruri_alias() because the webrtc endpoints do not set "valid" contact addresses. Cheers, Daniel On 07.05.21 14:13, Igor Olhovskiy wrote: Ah, no, sorry, I was wrong at this one, This just is not sent with "unable to resolve address toleivu2gdbh.invalid". Sorry. Looping were something else during my tests, this just with *advertise* added Regards, Igor On 07.05.2021 14:02, Daniel-Constantin Mierla wrote: This looks like incoming ACK, because there is only one Via header, so it is not what proxy forwards -- that one is relevant to see what headers were consumed and added. Cheers, Daniel On 07.05.21 13:51, Igor Olhovskiy wrote: Sure. 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:KAMAILIO_FQDN;lr;r2=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss> Route: <sip:KAMAILIO_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 By loop I meant, Kamailio just relaying it back to self and discard. Regards, Igor On 07.05.2021 13:48, Daniel-Constantin Mierla wrote: Can you paste the ACK that loops, after being handled once by Kamailio? Cheers, Daniel On 07.05.21 13:25, Igor Olhovskiy wrote: Daniel, Yes, it is. alias=... Also tried with listen = IP advertise FQDN same behavior, loose_route() stops acting correctly. PS: Forgot to add, Kamailio 5.4.3 / 5.4.4 Regards, Igor On 07.05.2021 13:21, Daniel-Constantin Mierla wrote: 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(a)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.comwww.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/ __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)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.comwww.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/ -- Daniel-Constantin Mierla -- www.asipto.comwww.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/ -- Daniel-Constantin Mierla -- www.asipto.comwww.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/ __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)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