[SR-Users] Kamailio ignores some ACK
Klaus Darilion
klaus.mailinglists at pernau.at
Fri May 11 10:49:28 CEST 2012
Set debug=4 and watch the logfile while receiving the ACK. If you do not
see any log messages then the ACK is not received by Kamailio (maybe
some local iptables/connection tracker problem)
regards
Klaus
On 10.05.2012 08:59, Mino Haluz wrote:
> We are troubleshooting this issue almost for 2 days and we did not find
> the solution yet. The thing is, that it does not enter even the config
> file (we have some debug messages at the start, that do not show).
> Otherwise we do not have any problem with ACK, but only this particular
> ACK is not forwarded... Was there some bug related to parsing in 3.1.0
> which would not print any error to syslog?
>
> On Wed, May 9, 2012 at 4:41 PM, Jason Penton <jason.penton at smilecoms.com
> <mailto:jason.penton at smilecoms.com>> wrote:
>
> 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 at gmail.com <mailto:stoyan.v.mihaylov at 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 at gmail.com <mailto:efelin.novak at 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:bob at server.com
> <mailto:sip%3Abob at server.com>>;tag=cb7dd641
> From: <sip:alice at 111.111.11.50
> <mailto:sip%3Aalice at 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 at 111.111.11.50
> <mailto:sip%3Aalice at 111.111.11.50>>;tag=599248D4-260
> To: "test_account"<sip:bob at server.com
> <mailto:sip%3Abob at 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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