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

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.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/ >>>> >>>> __________________________________________________________ >>>> 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.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/ > -- > 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/