then send ACK to Kamialio_public_ip not kamailio_internal_ip, so Kamailio can't receive ACK from UA。
UA
and Kamailio are only connected to the intranet。
this is my config，192.168.0.1 -> Kamailio
-> Other SBC(public ip)
function ksr_request_route()
if KSR.is_INVITE() then
KSR.rr.record_route();
KSR.nathelper.fix_nated_contact()
end
end
this is packet capture
2023/10/07 10:31:13.112374 192.168.0.1:45642 -> 192.168.0.2:7080
INVITE sip:+8618626439917@192.168.0.2:7080 SIP/2.0
Via:
SIP/2.0/UDP 192.168.0.11:45642;branch=z9hG4bK98457cb5b0e44505;rport
Contact:
<sip:05640@192.168.0.11:45642>
Max-Forwards:
70
To:
<sip:+8618626439917@192.168.0.2:7080>
From:
"05640" <sip:05640@192.168.0.2:7080>;tag=5c1a6b917a705e9e
Call-ID:
b430efcf360145c3
CSeq:
39379 INVITE
Allow:
INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,SUBSCRIBE,INFO
Supported:
Content-Type:
application/sdp
Content-Length:
756
2023/10/07 10:31:13.115403 192.168.0.2:7080 -> 122.97.130.198:15060
INVITE sip:+8618626439917@122.97.130.198:15060;user=phone SIP/2.0
Record-Route: <sip:36.140.122.12:7080;lr;>
Via: SIP/2.0/UDP 36.140.122.12:7080;branch=z9hG4bKe61a.5fe9d645ef1bbe470ca6d57fa20375bf.0
Via: SIP/2.0/UDP 192.168.0.1:45642;received=192.168.0.11;branch=z9hG4bK98457cb5b0e44505;rport=45642
Contact: <sip:05640@192.168.0.11:45642>
Max-Forwards: 70
To: <sip:+8618626439917@122.97.130.198:15060;user=phone>
From: "05640" <sip:02566043847@122.97.130.198:15060;user=phone>;tag=5c1a6b917a705e9e
Call-ID: b430efcf360145c3
CSeq: 39379 INVITE
P-Preferred-Service: urn:urn-7:3gpp-service.ims.icsi.mmtel
Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,SUBSCRIBE,INFO
2023/10/07 10:31:15.162198 122.97.130.198:15060 -> 192.168.0.2:7080
SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 36.140.122.12:7080;rport=7080;branch=z9hG4bKe61a.5fe9d645ef1bbe470ca6d57fa20375bf.0
Via: SIP/2.0/UDP 192.168.0.1:45642;received=192.168.0.1;branch=z9hG4bK98457cb5b0e44505;rport=45642
Record-Route: <sip:36.140.122.12:7080;lr;>
From: "05640" <sip:02566043847@28.commchina.net:15060;user=phone>;tag=5c1a6b917a705e9e
To: <sip:+8618626439917@28.commchina.net:15060;user=phone>;tag=66DUcBjQy3erB
Call-ID: b430efcf360145c3
CSeq: 39379 INVITE
Contact: <sip:+8618626439917@192.168.0.166:17060;transport=udp>
User-Agent: FreeSWITCH-mod_sofia/1.10.9.18+git~20230524T013825Z~2191e53372~64bit
Accept: application/sdp
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, PRACK, NOTIFY
2023/10/07 10:31:15.163165 192.168.0.2:7080 -> 192.168.0.1:45642
SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 192.168.0.11:45642;received=192.168.0.11;branch=z9hG4bK98457cb5b0e44505;rport=45642
Record-Route: <sip:36.140.122.12:7080;lr;>
From: "05640" <sip:02566043847@28.commchina.net:15060;user=phone>;tag=5c1a6b917a705e9e
To: <sip:+8618626439917@192.168.0.2:7080>;tag=66DUcBjQy3erB
Call-ID: b430efcf360145c3
CSeq: 39379 INVITE
Contact: <sip:+8618626439917@192.168.0.166:17060;transport=udp>
User-Agent: FreeSWITCH-mod_sofia/1.10.9.18+git~20230524T013825Z~2191e53372~64bit
Accept: application/sdp
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, PRACK, NOTIFY
Supported: precondition, 100rel, path, replaces
This question has been bothering me for a long time, help me
UA(192.168.0.11)
received 183, find Record-Route(36.140.122.12)
then send ACK to 36.140.122.12(Kamialio public ip) not 192.168.0.2(kamailio internal ip), so Kamailio can't receive ACK.
this is my config，192.168.0.11 -> Kamailio -> Other SBC(public ip)
function ksr_request_route()
if KSR.is_INVITE() then
KSR.rr.record_route();
KSR.nathelper.fix_nated_contact()
end
end
This
question has been bothering me for a long time, help me