[Spce-user] Malformed re-invite

Wed Dec 16 05:43:52 EST 2015

Looks like it's an MTU issue yes, the packed is bigger then 1500 bytes 
so we had to increase the MTU, that solved the problem.

Thank you for your feedback,
Bostjan

Boštjan Štros je 15. 12. 2015 ob 12:22 napisal:
> Hello all,
>
> we have a problem with re-invites passing through sipwise during a
> call, kamailio-proxy sends out correct packet, but kamailio-lb seems
> like it cuts out a few characters in the end and therefore it does not
> get recognized and replied in PBX, the packet is also not visible in
> wireshark. I don't see any errors in kamailio-lb logs though. What
> could be the cause of that?
>
> Here's a ngrep-sip of the re-invite:
>
> U 2015/12/08 13:01:13.253868 127.0.0.1:5062 -> 127.0.0.1:5060
> INVITE sip:38682280015 at 188.40.66.75:5060 SIP/2.0'
> Max-Forwards: 10'
> Record-Route:
> <sip:127.0.0.1:5062;lr=on;ftag=71035B18-5666C668000395A7-56FEF700;rtpprx=yes;ice_caller=strip;ice_callee=strip;mpd=ii>'
> Via: SIP/2.0/UDP
> 127.0.0.1:5062;branch=z9hG4bK81db.432378edfe05dd0c2fa51462d323c8d6.0'
> Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK1PPKiaWn;rport=5080'
> From:
> <sip:38612341031 at voip.alstar.si:5060>;tag=71035B18-5666C668000395A7-56FEF700'
> To: <sip:38682280015 at 188.40.66.75>;tag=as771e8823'
> CSeq: 11 INVITE'
> Call-ID: 5289233512da160f06fea9f86a82b954 at 188.40.66.75'
> Contact: <sip:386981112341031 at 127.0.0.1:5080>'
> Route:
> <sip:127.0.0.1;r2=on;lr=on;ftag=as771e8823;ngcplb=yes;socket=udp:77.94.133.244:5060>,
> <sip:77.94.133.244;r2=on;lr=on;ftag=as771e8823;ngcplb=yes;socket=udp:77.94.133.244:5060>,
> <sip:188.40.66.75;lr=on;ftag=as771e8823;did=5e4.283b507>'
> User-Agent: BN4000-3.3.1 '
> Supported: timer, 100rel'
> Allow: INVITE,CANCEL,ACK,BYE,OPTIONS,INFO,PRACK,UPDATE,REFER,NOTIFY'
> Content-Type: application/sdp'
> Content-Length: 238'
> '
> v=0'
> o=BN4000 3136201 7227637 IN IP4 77.94.133.244'
> s=-'
> c=IN IP4 77.94.133.244'
> b=AS:64'
> t=0 0'
> m=audio 35292 RTP/AVP 8 101'
> a=rtpmap:8 PCMA/8000'
> a=rtpmap:101 telephone-event/8000'
> a=fmtp:101 0-15'
> a=ptime:20'
> a=sendrecv'
> a=rtcp:35293'
>
>
> U 2015/12/08 13:01:13.254284 77.94.133.244:5060 -> 188.40.66.75:5060
> INVITE sip:38682280015 at 188.40.66.75:5060 SIP/2.0'
> Record-Route:
> <sip:77.94.133.244;r2=on;lr=on;ftag=71035B18-5666C668000395A7-56FEF700;ngcplb=yes;socket=udp:77.94.133.244:5060>'
> Record-Route:
> <sip:127.0.0.1;r2=on;lr=on;ftag=71035B18-5666C668000395A7-56FEF700;ngcplb=yes;socket=udp:77.94.133.244:5060>'
> Max-Forwards:  9'
> Record-Route:
> <sip:127.0.0.1:5062;lr=on;ftag=71035B18-5666C668000395A7-56FEF700;rtpprx=yes;ice_caller=strip;ice_callee=strip;mpd=ii>'
> Via: SIP/2.0/UDP
> 77.94.133.244;branch=z9hG4bK81db.a36a40d807fa8c2ed52fdda936aceb38.0'
> Via: SIP/2.0/UDP
> 127.0.0.1:5062;rport=5062;branch=z9hG4bK81db.432378edfe05dd0c2fa51462d323c8d6.0'
> Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK1PPKiaWn;rport=5080'
> From:
> <sip:38612341031 at voip.alstar.si:5060>;tag=71035B18-5666C668000395A7-56FEF700'
> To: <sip:38682280015 at 188.40.66.75>;tag=as771e8823'
> CSeq: 11 INVITE'
> Call-ID: 5289233512da160f06fea9f86a82b954 at 188.40.66.75'
> Route: <sip:188.40.66.75;lr=on;ftag=as771e8823;did=5e4.283b507>'
> User-Agent: BN4000-3.3.1 '
> Supported: timer, 100rel'
> Allow: INVITE,CANCEL,ACK,BYE,OPTIONS,INFO,PRACK,UPDATE,REFER,NOTIFY'
> Content-Type: application/sdp'
> Content-Length: 238'
> Contact:
> <sip:ngcp-lb at 77.94.133.244:5060;ngcpct=7369703a3132372e302e302e313a35303830>'
> '
> v=0'
> o=BN4000 3136201 7227637 IN IP4 77.94.133.244'
> s=-'
> c=IN IP4 77.94.133.244'
> b=AS:64'
> t=0 0'
> m=audio 35292 RTP/AVP 8 101'
> a=rtpmap:8 PCMA/8000'
> a=rtpmap:101 telephone-event/8000'
> a=fmtp:101 0-15'
> a=ptime:20'
> a=sendrecv'
> a=rtcp:
>
> U 2015/12/08 13:01:13.719199 127.0.0.1:5062 -> 127.0.0.1:5060
> INVITE sip:38682280015 at 188.40.66.75:5060 SIP/2.0'
> Max-Forwards: 10'
> Record-Route:
> <sip:127.0.0.1:5062;lr=on;ftag=71035B18-5666C668000395A7-56FEF700;rtpprx=yes;ice_caller=strip;ice_callee=strip;mpd=ii>'
> Via: SIP/2.0/UDP
> 127.0.0.1:5062;branch=z9hG4bK81db.432378edfe05dd0c2fa51462d323c8d6.0'
> Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK1PPKiaWn;rport=5080'
> From:
> <sip:38612341031 at voip.alstar.si:5060>;tag=71035B18-5666C668000395A7-56FEF700'
> To: <sip:38682280015 at 188.40.66.75>;tag=as771e8823'
> CSeq: 11 INVITE'
> Call-ID: 5289233512da160f06fea9f86a82b954 at 188.40.66.75'
> Contact: <sip:386981112341031 at 127.0.0.1:5080>'
> Route:
> <sip:127.0.0.1;r2=on;lr=on;ftag=as771e8823;ngcplb=yes;socket=udp:77.94.133.244:5060>,
> <sip:77.94.133.244;r2=on;lr=on;ftag=as771e8823;ngcplb=yes;socket=udp:77.94.133.244:5060>,
> <sip:188.40.66.75;lr=on;ftag=as771e8823;did=5e4.283b507>'
> User-Agent: BN4000-3.3.1 '
> Supported: timer, 100rel'
> Allow: INVITE,CANCEL,ACK,BYE,OPTIONS,INFO,PRACK,UPDATE,REFER,NOTIFY'
> Content-Type: application/sdp'
> Content-Length: 238'
> '
> v=0'
> o=BN4000 3136201 7227637 IN IP4 77.94.133.244'
> s=-'
> c=IN IP4 77.94.133.244'
> b=AS:64'
> t=0 0'
> m=audio 35292 RTP/AVP 8 101'
> a=rtpmap:8 PCMA/8000'
> a=rtpmap:101 telephone-event/8000'
> a=fmtp:101 0-15'
> a=ptime:20'
> a=sendrecv'
> a=rtcp:35293'
>
>
> U 2015/12/08 13:01:13.719615 77.94.133.244:5060 -> 188.40.66.75:5060
> INVITE sip:38682280015 at 188.40.66.75:5060 SIP/2.0'
> Record-Route:
> <sip:77.94.133.244;r2=on;lr=on;ftag=71035B18-5666C668000395A7-56FEF700;ngcplb=yes;socket=udp:77.94.133.244:5060>'
> Record-Route:
> <sip:127.0.0.1;r2=on;lr=on;ftag=71035B18-5666C668000395A7-56FEF700;ngcplb=yes;socket=udp:77.94.133.244:5060>'
> Max-Forwards:  9'
> Record-Route:
> <sip:127.0.0.1:5062;lr=on;ftag=71035B18-5666C668000395A7-56FEF700;rtpprx=yes;ice_caller=strip;ice_callee=strip;mpd=ii>'
> Via: SIP/2.0/UDP
> 77.94.133.244;branch=z9hG4bK81db.a36a40d807fa8c2ed52fdda936aceb38.0'
> Via: SIP/2.0/UDP
> 127.0.0.1:5062;rport=5062;branch=z9hG4bK81db.432378edfe05dd0c2fa51462d323c8d6.0'
> Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK1PPKiaWn;rport=5080'
> From:
> <sip:38612341031 at voip.alstar.si:5060>;tag=71035B18-5666C668000395A7-56FEF700'
> To: <sip:38682280015 at 188.40.66.75>;tag=as771e8823'
> CSeq: 11 INVITE'
> Call-ID: 5289233512da160f06fea9f86a82b954 at 188.40.66.75'
> Route: <sip:188.40.66.75;lr=on;ftag=as771e8823;did=5e4.283b507>'
> User-Agent: BN4000-3.3.1 '
> Supported: timer, 100rel'
> Allow: INVITE,CANCEL,ACK,BYE,OPTIONS,INFO,PRACK,UPDATE,REFER,NOTIFY'
> Content-Type: application/sdp'
> Content-Length: 238'
> Contact:
> <sip:ngcp-lb at 77.94.133.244:5060;ngcpct=7369703a3132372e302e302e313a35303830>'
> '
> v=0'
> o=BN4000 3136201 7227637 IN IP4 77.94.133.244'
> s=-'
> c=IN IP4 77.94.133.244'
> b=AS:64'
> t=0 0'
> m=audio 35292 RTP/AVP 8 101'
> a=rtpmap:8 PCMA/8000'
> a=rtpmap:101 telephone-event/8000'
> a=fmtp:101 0-15'
> a=ptime:20'
> a=sendrecv'
> a=rtcp:
>
>
>
> Thank you for reply and best regards,
> Bostjan