[SR-Users] Problem with Kamailio not routing ACK to a 200 OK
Morten Isaksen
misak at misak.dk
Mon Nov 8 15:00:17 CET 2010
Hi,
On Fri, Oct 29, 2010 at 10:59 AM, Daniel-Constantin Mierla
<miconda at gmail.com> wrote:
> Hello,
>
> On 10/28/10 1:37 PM, Morten Isaksen wrote:
>>
>> Hi,
>>
>> I have a strange problem with Kamailio 3.0.2. When one of our end
>> users makes a call Kamailio does not route the ACK (in response to the
>> 200 OK). For all other end users it works fine.
>>
>> For me it looks the the has_totag() checks for some reason fails and
>> then t_check_trans() thinks it is a ACK to a local transactions and
>> then terminates the script. Otherwise there should be more lines in
>> the log file.
>
> if you add an xlog() after the if with has_totag(), do you get the message
> in the logs?
Sorry for the delay, but a had to wait for the customer to make a test call.
I placed a xlog("L_WARN", "has_totag after - M=$rm RURI=$ru F=$fu
T=$tu IP=$si ID=$ci\n"); just after the if (has_totag()) { .. } and it
does not show in the log.
It looks very strange to me. Do you have any ideas what is wrong.
/Morten
> Cheers,
> Daniel
>
>> The conf is pretty standard.
>>
>> route{
>>
>> xlog("L_WARN", "New request - M=$rm RURI=$ru F=$fu T=$tu
>> IP=$si ID=$ci\n");
>> xlog("L_WARN", "ua=$ua");
>> if (!mf_process_maxfwd_header("10")) {
>> sl_send_reply("483","Too Many Hops");
>> exit;
>> }
>>
>> if(!sanity_check("1511", "7"))
>> {
>> xlog("Malformed SIP message from $si:$sp\n");
>> exit;
>> }
>>
>>
>> if (has_totag()) {
>> xlog("L_WARN", "has_totag start - M=$rm RURI=$ru F=$fu
>> T=$tu IP=$si ID=$ci\n");
>> # sequential request withing a dialog should
>> # take the path determined by record-routing
>> if (loose_route()) {
>> xlog("L_WARN", "loose_route - M=$rm RURI=$ru
>> F=$fu T=$tu IP=$si ID=$ci\n");
>> route(RELAY);
>> } else {
>> if (is_method("SUBSCRIBE")&& uri == myself) {
>> # in-dialog subscribe requests
>> #route(PRESENCE);
>> exit;
>> }
>> if ( is_method("ACK") ) {
>> if ( t_check_trans() ) {
>> xlog("L_WARN", "ACK
>> t_check_trans - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>> # non loose-route, but
>> stateful ACK; must be an ACK after a 487 or e.g. 404 from upstream
>> server
>> t_relay();
>> exit;
>> } else {
>> xlog("Ignoring ACK - M=$rm
>> RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
>> # ACK without matching
>> transaction ... ignore and discard.\n");
>> exit;
>> }
>> }
>> sl_send_reply("404","Not here");
>> }
>> xlog("L_WARN", "has_totag end - M=$rm RURI=$ru F=$fu
>> T=$tu IP=$si ID=$ci\n");
>> exit;
>> }
>>
>> #initial requests
>>
>> # CANCEL processing
>> if (is_method("CANCEL"))
>> {
>> if (t_check_trans())
>> t_relay();
>> exit;
>> }
>>
>> setflag(4);
>> t_check_trans();
>>
>> ...
>>
>> The log files show:
>>
>> Oct 28 10:51:13 sip-core-1 /usr/local/sbin/kamailio[10503]: WARNING:
>> <script>: New request - M=ACK RURI=sip:1105 at 178.21.248.56:5060
>> F=sip:87776688 at sip.uni-tel.dk T=sip:869
>> 87106 at sip.uni-tel.dk IP=178.21.248.20 ID=AI231CA9BD0A4A1C53 at 10.0.0.150
>> Oct 28 10:51:13 sip-core-1 /usr/local/sbin/kamailio[10503]: WARNING:
>> <script>: ua=Aastra Intelligate
>>
>>
>>
>>
>> The trace
>>
>> U 2010/10/28 10:51:02.616337 178.21.248.7:5060 -> 178.21.248.56:5060
>> INVITE sip:86987106 at 178.21.248.56 SIP/2.0.
>>
>> Record-Route:<sip:178.21.248.7;lr;ftag=AI8DA85D59B9B6634F;did=f48.5fd1db02>.
>> Record-Route:<sip:178.21.248.20;lr;ftag=AI8DA85D59B9B6634F>.
>> Via: SIP/2.0/UDP 178.21.248.7;branch=z9hG4bK690c.9cfea506.0.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.0.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK3c70fae55c8b362ff34e6c782cc21592.
>> To:<sip:86987106 at sip.uni-tel.dk>.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 INVITE.
>> Max-Forwards: 68.
>> Contact:<sip:87776688 at 87.104.233.108:5060;line=AI7EFC34995E724DD7>.
>> Accept: application/sdp.
>> Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,OPTIONS,REFER.
>> P-Preferred-Identity:<sip:87776688 at sip.uni-tel.dk>.
>> Privacy: none.
>> User-Agent: Aastra Intelligate.
>> Content-Type: application/sdp.
>> Content-Length: 280.
>> X-trunktype: IC.
>> .
>> v=0.
>> o=intelligate 1194032777 1194032777 IN IP4 87.104.233.106.
>> s=call.
>> c=IN IP4 178.21.248.22.
>> t=0 0.
>> m=audio 60984 RTP/AVP 8 0 18 101.
>> a=rtpmap:8 PCMA/8000.
>> a=rtpmap:0 PCMU/8000.
>> a=rtpmap:18 G729/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=fmtp:101 0-15.
>> a=sendrecv.
>> a=ptime:20.
>>
>> #
>> U 2010/10/28 10:51:02.636854 178.21.248.56:5060 -> 178.21.248.7:5060
>> SIP/2.0 100 Trying.
>> Via: SIP/2.0/UDP 178.21.248.7;branch=z9hG4bK690c.9cfea506.0.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.0.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK3c70fae55c8b362ff34e6c782cc21592.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> To:<sip:86987106 at sip.uni-tel.dk>;tag=1c2073920452.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 INVITE.
>> Supported: em,timer,replaces,path,early-session,resource-priority.
>> Allow:
>> REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
>> Server: Audiocodes-Sip-Gateway-Mediant 2000/v.5.60A.035.002.
>> Content-Length: 0.
>> .
>>
>> #####
>> U 2010/10/28 10:51:04.134445 178.21.248.56:5060 -> 178.21.248.7:5060
>> SIP/2.0 183 Session Progress.
>> Via: SIP/2.0/UDP 178.21.248.7;branch=z9hG4bK690c.9cfea506.0.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.0.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK3c70fae55c8b362ff34e6c782cc21592.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> To:<sip:86987106 at sip.uni-tel.dk>;tag=1c2073920452.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 INVITE.
>> Contact:<sip:1105 at 178.21.248.56:5060>.
>>
>> Record-Route:<sip:178.21.248.7;lr;ftag=AI8DA85D59B9B6634F;did=f48.5fd1db02>,<sip:178.21.248.20;lr;ftag=AI8DA85D59B9B6634F>.
>> Supported: em,timer,replaces,path,early-session,resource-priority.
>> Allow:
>> REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
>> Server: Audiocodes-Sip-Gateway-Mediant 2000/v.5.60A.035.002.
>> Content-Type: application/sdp.
>> Content-Length: 259.
>> .
>> v=0.
>> o=AudiocodesGW 2073965634 2073965290 IN IP4 178.21.248.56.
>> s=Phone-Call.
>> c=IN IP4 178.21.248.56.
>> t=0 0.
>> m=audio 6050 RTP/AVP 8 101.
>> c=IN IP4 178.21.248.56.
>> a=rtpmap:8 PCMA/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=fmtp:101 0-15.
>> a=ptime:20.
>> a=sendrecv.
>>
>> #
>> U 2010/10/28 10:51:04.134748 178.21.248.7:5060 -> 178.21.248.20:5060
>> SIP/2.0 183 Session Progress.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.0.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK3c70fae55c8b362ff34e6c782cc21592.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> To:<sip:86987106 at sip.uni-tel.dk>;tag=1c2073920452.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 INVITE.
>> Contact:<sip:1105 at 178.21.248.56:5060>.
>>
>> Record-Route:<sip:178.21.248.7;lr;ftag=AI8DA85D59B9B6634F;did=f48.5fd1db02>,<sip:178.21.248.20;lr;ftag=AI8DA85D59B9B6634F>.
>> Supported: em,timer,replaces,path,early-session,resource-priority.
>> Allow:
>> REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
>> Server: Audiocodes-Sip-Gateway-Mediant 2000/v.5.60A.035.002.
>> Content-Type: application/sdp.
>> Content-Length: 259.
>> .
>> v=0.
>> o=AudiocodesGW 2073965634 2073965290 IN IP4 178.21.248.56.
>> s=Phone-Call.
>> c=IN IP4 178.21.248.56.
>> t=0 0.
>> m=audio 6050 RTP/AVP 8 101.
>> c=IN IP4 178.21.248.56.
>> a=rtpmap:8 PCMA/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=fmtp:101 0-15.
>> a=ptime:20.
>> a=sendrecv.
>>
>> #
>> U 2010/10/28 10:51:04.136586 178.21.248.56:5060 -> 178.21.248.7:5060
>> SIP/2.0 180 Ringing.
>> Via: SIP/2.0/UDP 178.21.248.7;branch=z9hG4bK690c.9cfea506.0.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.0.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK3c70fae55c8b362ff34e6c782cc21592.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> To:<sip:86987106 at sip.uni-tel.dk>;tag=1c2073920452.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 INVITE.
>> Contact:<sip:1105 at 178.21.248.56:5060>.
>>
>> Record-Route:<sip:178.21.248.7;lr;ftag=AI8DA85D59B9B6634F;did=f48.5fd1db02>,<sip:178.21.248.20;lr;ftag=AI8DA85D59B9B6634F>.
>> Supported: em,timer,replaces,path,early-session,resource-priority.
>> Allow:
>> REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
>> Server: Audiocodes-Sip-Gateway-Mediant 2000/v.5.60A.035.002.
>> Content-Type: application/sdp.
>> Content-Length: 259.
>> .
>> v=0.
>> o=AudiocodesGW 2073965634 2073965290 IN IP4 178.21.248.56.
>> s=Phone-Call.
>> c=IN IP4 178.21.248.56.
>> t=0 0.
>> m=audio 6050 RTP/AVP 8 101.
>> c=IN IP4 178.21.248.56.
>> a=rtpmap:8 PCMA/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=fmtp:101 0-15.
>> a=ptime:20.
>> a=sendrecv.
>>
>> #
>> U 2010/10/28 10:51:04.136837 178.21.248.7:5060 -> 178.21.248.20:5060
>> SIP/2.0 180 Ringing.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.0.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK3c70fae55c8b362ff34e6c782cc21592.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> To:<sip:86987106 at sip.uni-tel.dk>;tag=1c2073920452.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 INVITE.
>> Contact:<sip:1105 at 178.21.248.56:5060>.
>>
>> Record-Route:<sip:178.21.248.7;lr;ftag=AI8DA85D59B9B6634F;did=f48.5fd1db02>,<sip:178.21.248.20;lr;ftag=AI8DA85D59B9B6634F>.
>> Supported: em,timer,replaces,path,early-session,resource-priority.
>> Allow:
>> REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
>> Server: Audiocodes-Sip-Gateway-Mediant 2000/v.5.60A.035.002.
>> Content-Type: application/sdp.
>> Content-Length: 259.
>> .
>> v=0.
>> o=AudiocodesGW 2073965634 2073965290 IN IP4 178.21.248.56.
>> s=Phone-Call.
>> c=IN IP4 178.21.248.56.
>> t=0 0.
>> m=audio 6050 RTP/AVP 8 101.
>> c=IN IP4 178.21.248.56.
>> a=rtpmap:8 PCMA/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=fmtp:101 0-15.
>> a=ptime:20.
>> a=sendrecv.
>>
>> ##############################
>> U 2010/10/28 10:51:12.881179 178.21.248.56:5060 -> 178.21.248.7:5060
>> SIP/2.0 200 OK.
>> Via: SIP/2.0/UDP 178.21.248.7;branch=z9hG4bK690c.9cfea506.0.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.0.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK3c70fae55c8b362ff34e6c782cc21592.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> To:<sip:86987106 at sip.uni-tel.dk>;tag=1c2073920452.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 INVITE.
>> Contact:<sip:1105 at 178.21.248.56:5060>.
>>
>> Record-Route:<sip:178.21.248.7;lr;ftag=AI8DA85D59B9B6634F;did=f48.5fd1db02>,<sip:178.21.248.20;lr;ftag=AI8DA85D59B9B6634F>.
>> Supported: em,timer,replaces,path,early-session,resource-priority.
>> Allow:
>> REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
>> Server: Audiocodes-Sip-Gateway-Mediant 2000/v.5.60A.035.002.
>> Content-Type: application/sdp.
>> Content-Length: 259.
>> .
>> v=0.
>> o=AudiocodesGW 2073965634 2073965290 IN IP4 178.21.248.56.
>> s=Phone-Call.
>> c=IN IP4 178.21.248.56.
>> t=0 0.
>> m=audio 6050 RTP/AVP 8 101.
>> c=IN IP4 178.21.248.56.
>> a=rtpmap:8 PCMA/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=fmtp:101 0-15.
>> a=ptime:20.
>> a=sendrecv.
>>
>> #
>> U 2010/10/28 10:51:12.882388 178.21.248.7:5060 -> 178.21.248.20:5060
>> SIP/2.0 200 OK.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.0.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK3c70fae55c8b362ff34e6c782cc21592.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> To:<sip:86987106 at sip.uni-tel.dk>;tag=1c2073920452.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 INVITE.
>> Contact:<sip:1105 at 178.21.248.56:5060>.
>>
>> Record-Route:<sip:178.21.248.7;lr;ftag=AI8DA85D59B9B6634F;did=f48.5fd1db02>,<sip:178.21.248.20;lr;ftag=AI8DA85D59B9B6634F>.
>> Supported: em,timer,replaces,path,early-session,resource-priority.
>> Allow:
>> REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
>> Server: Audiocodes-Sip-Gateway-Mediant 2000/v.5.60A.035.002.
>> Content-Type: application/sdp.
>> Content-Length: 259.
>> .
>> v=0.
>> o=AudiocodesGW 2073965634 2073965290 IN IP4 178.21.248.56.
>> s=Phone-Call.
>> c=IN IP4 178.21.248.56.
>> t=0 0.
>> m=audio 6050 RTP/AVP 8 101.
>> c=IN IP4 178.21.248.56.
>> a=rtpmap:8 PCMA/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=fmtp:101 0-15.
>> a=ptime:20.
>> a=sendrecv.
>>
>> #####<<<<<<<<<<<<<<<<<<<<<< This is the problem
>> packet>>>>>>>>>>>>>>>>>>>>>
>> U 2010/10/28 10:51:13.267863 178.21.248.20:5060 -> 178.21.248.7:5060
>> ACK sip:1105 at 178.21.248.56:5060 SIP/2.0.
>> Record-Route:<sip:178.21.248.20;lr;ftag=AI8DA85D59B9B6634F>.
>> Via: SIP/2.0/UDP 178.21.248.20;branch=z9hG4bK690c.97354e4.2.
>> Via: SIP/2.0/UDP
>>
>> 87.104.233.108:5060;rport=5060;branch=z9hG4bK07103fe69c8af048b9b8216eb2f7233f.
>> To:<sip:86987106 at sip.uni-tel.dk>;tag=1c2073920452.
>> From:<sip:87776688 at sip.uni-tel.dk>;tag=AI8DA85D59B9B6634F.
>> Call-ID: AI231CA9BD0A4A1C53 at 10.0.0.150.
>> CSeq: 2 ACK.
>> Max-Forwards: 69.
>> Route:<sip:178.21.248.7;lr=on;ftag=AI8DA85D59B9B6634F;did=f48.5fd1db02>.
>> User-Agent: Aastra Intelligate.
>> Content-Length: 0.
>>
>>
>>
>>
>>
>>
>>
>>
>
> --
> Daniel-Constantin Mierla
> http://www.asipto.com
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
--
Morten Isaksen
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