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@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@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/
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