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.no...@gmail.com> wrote: > 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:b...@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:b...@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 > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >
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