Seems like a loose routing issue. Are you loose routing in your config file?
On Wed, May 9, 2012 at 4:34 PM, Stoyan Mihaylov <stoyan.v.mihaylov@gmail.com
wrote:
You can use something like wireshark on Kamailio server to see if ACK packets go in right direction. I had problem with ACK and BYE, and I saw that in some cases ACK and BYE packets looped back in kamailio. May be I used wrong client.
On Wed, May 9, 2012 at 5:15 PM, Efelin Novak efelin.novak@gmail.comwrote:
Hi folks,
I have a strange problem when Kamailio ignores ACKs in a specific scenario. The call flow is as follows:
A -> INVITE -> kamailio -> INVITE -> B [omitting 100 and 180] A <- 200 OK <- kamailio <- 200 OK <- B A -> ACK -> kamailio
There are INVITE Xlogs, Reply ROUTE xlogs and media-proxy logs in the syslog. However there is no information about these ACKs. No XLOGs are printed even if there is one on the top of the main route.
"tcpdump -A -s0 -i any -n port 5060" receives this message correctly:
14:47:01.246153 IP 111.111.11.11.5060 > 80.80.80.80.60442: SIP, length: 915 SIP/2.0 200 OK Via: SIP/2.0/UDP 111.111.11.11:5060 ;rport=60442;x-route-tag="tgrp:A";branch=z9hG4bK1634E6A88 Record-Route: sip:111.111.11.11;lr;ftag=599248D4-260;vsf=AAAAAAAAAAAAAAAAAAAAW0FVT0ZWHF1aNy4xGzA-;nat=yes;did=3bb.327c47e6 Contact: sip:80.80.80.80:65002;transport=udp To: "test_account"sip:bob@server.com;tag=cb7dd641 From: sip:alice@111.111.11.50;tag=599248D4-260 Call-ID: 9AFCFC51.11.50 CSeq: 101 INVITE Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS, INFO, SUBSCRIBE, UPDATE Content-Type: application/sdp Content-Length:263
v=0 o=- 492575093 492575093 IN IP4 111.111.11.60 s=test_device i=(o=IN IP4 192.168.1.10) c=IN IP4 111.111.11.71 t=0 0 m=audio 16416 RTP/AVP 18 101 a=rtpmap:18 G729/8000 a=fmtp:18 annexb=no a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=ptime:20
14:47:01.254511 IP 111.111.11.50.60442 > 111.111.11.11.5060: SIP, length: 521 ACK sip:80.80.80.80:65002;transport=udp SIP/2.0 Via: SIP/2.0/UDP 111.111.11.50:5060;x-route-tag="tgrp:A";branch=z9hG4bK1634E7DE8 From: sip:alice@111.111.11.50;tag=599248D4-260 To: "test_account"sip:bob@server.com;tag=cb7dd641 Call-ID: 9AFCFC51.11.50 Route: sip:111.111.11.11;lr;ftag=599248D4-260;vsf=AAAAAAAAAAAAAAAAAAAAW0FVT0ZWHF1aNy4xGzA-;nat=yes;did=3bb.327c47e6 Max-Forwards: 70 CSeq: 101 ACK Content-Length: 0
My Kamailio version is kamailio 3.1.0 (i386/linux) 1e204f. Does anybody knows where can be a problem? How can I check whether Kamailio receives something?
...
Jan
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