Hello Everyone,
I’m running into a problem with Kamailio and Asterisk inside Kubernetes. Both
are exposed to the outside.
My Network:
External IP: 192.168.1.99:32210 TCP
Kamailio Service IP: 10.101.179.164
Kamailio Pod IP: 10.244.10.35
Asterisk Service IP: 10.99.122.141
Asterisk Pod IP: 10.244.10.38
The issue is:
When connecting directly to Asterisk, SIP calls work with not problems if I
remove the local_net setting, so that Asterisk advertises its external IP.
When connecting through Kamailio as a proxy, calls only “works” if I enable
local_net, but still client can't send ACK to 200 OK.
I believe the problem is that Asterisk sets the Contact header to its pod IP
instead of the Service IP and Kamailio is not able to send ACK which leads to
call timeout.
Any Ideas?
My Transport:
[transport-tcp-nat]
type=transport
protocol=tcp
bind=0.0.0.0
local_net=10.244.10.0/16
local_net=10.96.0.0/12
external_media_address=192.168.1.99
external_signaling_address=192.168.1.99
external_signaling_port=32210
SIP Logs:
<--- Transmitting SIP response (1293 bytes) to UDP:10.244.10.35:5001 --->
SIP/2.0 200 OK
Via: SIP/2.0/UDP
192.168.1.190:5001;rport=5001;received=10.244.10.35;branch=z9hG4bK683e.ce5a170c8d281e2227ec5a8870044ad9.0;i=4
Via: SIP/2.0/TCP
10.244.10.1:54435;rport=54435;received=10.244.10.1;branch=z9hG4bKPjb54c457d4a7d48959ca03391a56e1136;alias
Call-ID: d0e65953da0f406498b95e77aae9f850
From: <sip:6001@192.168.1.99>;tag=d9761b4e52944f068f85ff71d139f660
To: <sip:100@192.168.1.99>;tag=76784095-78d9-4467-88e6-d9fba8bfbcd6
CSeq: 21022 INVITE
Server: Asterisk PBX 18.24.3
Contact: <sip:10.244.10.38:5060>
Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL,
UPDATE, PRACK, INFO, MESSAGE, REFER
Supported: 100rel, timer, replaces, norefersub
Session-Expires: 1800;refresher=uac
Require: timer
Content-Type: application/sdp
Content-Length: 487
v=0
o=- 3966074837 3966074839 IN IP4 10.244.10.38
s=Asterisk
c=IN IP4 10.244.10.38
t=0 0
m=audio 10056 RTP/AVP 9 0 101
a=ice-ufrag:4e2d77c12b938bbc4c7f3c773f3a262a
a=ice-pwd:5df2f60432675fb26b988faa6a42c1c1
a=candidate:Hc0a80163 1 UDP 2130706431 192.168.1.99 10056 typ host
a=candidate:Hc0a80163 2 UDP 2130706430 192.168.1.99 10057 typ host
a=rtpmap:9 G722/8000
a=rtpmap:0 PCMU/8000
a=ptime:20
a=maxptime:140
a=sendrecv
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
Kamailio Log:
17(65) WARNING: <script>: [onsend_route] Packet going to sip:10.99.122.141:5060
17(65) WARNING: <script>: [RTPENGINE] ACK
17(65) WARNING: <script>: [REQUEST]: d0e65953da0f406498b95e77aae9f850: got ACK
ACK sip:100@192.168.1.99:31953;transport=tcp SIP/2.0
Via: SIP/2.0/TCP
10.244.10.1:54435;rport;branch=z9hG4bKPj130d3b53570f45afa764dd874a115771;alias
Max-Forwards: 70
From: <sip:6001@192.168.1.99>;tag=d9761b4e52944f068f85ff71d139f660
To: <sip:100@192.168.1.99>;tag=z9hG4bK983e.12c423f5a5497fcaafae93af5228672e.0
Call-ID: d0e65953da0f406498b95e77aae9f850
CSeq: 21021 ACK
Content-Length: 0
WireShark Log:
Session Initiation Protocol (ACK)
Request-Line: ACK sip:10.244.10.38:5060 SIP/2.0
Method: ACK
Request-URI: sip:10.244.10.38:5060
Request-URI Host Part: 10.244.10.38
Request-URI Host Port: 5060
[Resent Packet: False]
[Request Frame: 2849862]
[Response Time (ms): 3968]
Message Header
Via: SIP/2.0/UDP
192.168.1.163:49666;rport;branch=z9hG4bKPje5005f15847d460d81553d1f5a5e0393
Transport: UDP
Sent-by Address: 192.168.1.163
Sent-by port: 49666
RPort: rport
Branch: z9hG4bKPje5005f15847d460d81553d1f5a5e0393
Max-Forwards: 70
From: <sip:6001@192.168.1.99>;tag=d8b13b005dda4b008eaf52f5d7c1f902
SIP from address: sip:6001@192.168.1.99
SIP from address User Part: 6001
SIP from address Host Part: 192.168.1.99
SIP from tag: d8b13b005dda4b008eaf52f5d7c1f902
To: <sip:100@192.168.1.99>;tag=768c6b9f-afd5-4546-b650-8616bbec7fd7
SIP to address: sip:100@192.168.1.99
SIP to address User Part: 100
SIP to address Host Part: 192.168.1.99
SIP to tag: 768c6b9f-afd5-4546-b650-8616bbec7fd7
Call-ID: 210137ed6d6145bc8f864a6b1d9f0f31
[Generated Call-ID: 210137ed6d6145bc8f864a6b1d9f0f31]
CSeq: 8750 ACK
Sequence Number: 8750
Method: ACK
Content-Length: 0
Thank you.
__________________________________________________________
Kamailio - Users Mailing List - Non Commercial Discussions --
sr-users@lists.kamailio.org
To unsubscribe send an email to sr-users-le...@lists.kamailio.org
Important: keep the mailing list in the recipients, do not reply only to the
sender!
