Hello Carsten,
outgoing initial INVITE contains only one c= line?
I would say that the re-INVITE is correct. At the time of writing the code there
was no support for relaying "udptl" protocol (not sure how about now) so I did a
workaround there to pass the "udptl" directly (no relaying for it, so put
original
IP in c= line related to the m= line)
Vaclav
On St, lis 21, 2012 at 12:50:02 +0100, Carsten Bock wrote:
> Hi,
>
> i just noticed the following. I have a SEMS running as a SBC with the
> following
> config settings:
>
> ## RTP relay
> # enable RTP relaying (bridging):
> enable_rtprelay=yes
> # force symmetric RTP (start with passive mode):
> rtprelay_force_symmetric_rtp=yes
> # use symmetric RTP indication from P-MsgFlags flag 2
> #rtprelay_msgflags_symmetric_rtp=yes
>
> I use latest SEMS 1.5 from git, without any changes.
> It works fine until i do a Re-INVITE (e.g. for T.38). The outgoing Re-INVITE
> contains suddenly two c= lines?!?
>
> This looks like a bug to me.
>
> Kind regards,
> Carsten
>
> Incoming Re-INVITE for T.38:
>
> INVITE sip:84.252.101.20:5060 SIP/2.0
> Max-Forwards: 28
> Via: SIP/2.0/UDP 84.252.101.17;branch=z9hG4bKb4c1.a6add533.0
> Via: SIP/2.0/UDP 84.252.101.12;branch=z9hG4bKb4c1.e8e4e867.0
> Via: SIP/2.0/UDP 109.239.50.67:5061;rport=5061;branch=z9hG4bKb4c1.e8fa5fe6.0
> Via: SIP/2.0/UDP 109.239.50.66:5080;branch=z9hG4bKF8glJakk;rport=5080
> From: sip:[email protected];tag=3A06855E-50ACBBA8000F05B6-28C25700
> To: "+4989200011252" <sip:[email protected]>;tag=
> 46E2A8C2-50ACBBA8000ED1E9-737F7700
> CSeq: 14 INVITE
> Call-ID: 1B02101F-50ACBBA8000ED1EC-737F7700
> Contact: <sip:[email protected]:5080>
> Supported: timer
> Session-Expires: 120
> Min-SE: 90
> Content-Type: application/sdp
> Content-Length: 571
>
> v=0
> o=- 12682033 12682038 IN IP4 87.234.1.225
> s=call
> c=IN IP4 87.234.1.225
> t=0 0
> m=image 23634 udptl t38
> a=sendrecv
> a=T38FaxVersion:0
> a=T38MaxBitRate:14400
> a=T38FaxRateManagement:transferredTCF
> a=T38FaxUdpEC:t38UDPRedundancy
> a=direction:both
> m=audio 23636 RTP/AVP 8 102 0 127 101
> a=rtpmap:8 PCMA/8000
> a=rtpmap:102 PCMA/8000
> a=rtpmap:0 PCMU/8000
> a=rtpmap:127 PCMU/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=sendrecv
> a=gpmd:102 vbd=yes
> a=gpmd:127 vbd=yes
> a=ptime:20
> a=silenceSupp:off - - - -
> a=ecan:fb on -
> a=X-fax
> a=direction:both
>
> Outgoing Re-INVITE:
>
> INVITE sip:[email protected]:61025 SIP/2.0
> Via: SIP/2.0/UDP 84.252.101.20;branch=z9hG4bKfZo1oa8u;rport
> From:
> <sip:[email protected]>;tag=27B7E6A1-50ACBBA8000ECFED-783EE700
> To: "+4989200011252" <sip:[email protected]>;tag=92b7a18884
> CSeq: 10 INVITE
> Call-ID: 5119d5fe762347de
> Contact: <sip:[email protected]:5060>
> Route: <sip:84.252.101.17;lr=on;ftag=92b7a18884;did=b3f.e62da602;ngv=
> NWU2YnxpNDk8ZDVjMDMzPzRCAnssZnMweGovPz1kLXk5Z1s->,
> <sip:84.252.101.12;lr=on;nat
> =yes>
> Supported: timer
> Session-Expires: 120
> Min-SE: 90
> Content-Type: application/sdp
> Content-Length: 595
>
> v=0
> o=- 12682033 12682034 IN IP4 87.234.1.225
> s=call
> c=IN IP4 84.252.101.20
> t=0 0
> m=image 23634 udptl t38
> c=IN IP4 87.234.1.225
> a=sendrecv
> a=T38FaxVersion:0
> a=T38MaxBitRate:14400
> a=T38FaxRateManagement:transferredTCF
> a=T38FaxUdpEC:t38UDPRedundancy
> a=direction:both
> m=audio 35006 RTP/AVP 8 103 0 127 101
> a=rtpmap:8 PCMA/8000
> a=rtpmap:103 PCMA/8000
> a=rtpmap:0 PCMU/8000
> a=rtpmap:127 PCMU/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=sendrecv
> a=gpmd:103 vbd=yes
> a=gpmd:127 vbd=yes
> a=ptime:20
> a=silenceSupp:off - - - -
> a=ecan:fb on -
> a=X-fax
> a=direction:both
>
> --
> Carsten Bock
> CEO (Geschäftsführer)
>
> ng-voice GmbH
> Schomburgstr. 80
> D-22767 Hamburg / Germany
>
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>
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