[Freeswitch-users] incoming call hangup if remote SDP contains a=crypto

Wed Aug 29 10:34:36 MSD 2012

the problem is that you are using webrtc sipml5 and we don't have support
for webrtc sdp's yet.
It will work once we are done adding support.

On Tue, Aug 28, 2012 at 7:39 AM, Antonio <asilva at wirelessmundi.com> wrote:

> **
> Hi all,
>
> I'm having a problem to make calls, when the destination answer, the calls
> is hangup with incompatible destination.
>
> Debugging, i could see that is because fs drops the call, because it
> doesn't support ZRTP.
>
> So, is it normal that freeswitch hangs up the call when in the remote
> party send in the sdp "a=crypto:1 ... " ?
>
> Should it ignore and try to established the call using the supported
> methods in the sdp?
> Like for video calls, if the remote send video codecs, if we do not have
> them we don't hangup the call... just make a simple audio call...
>
>
> For incoming calls there is no problem.
>
>
> REMOTE SDP:
>
> 2012-08-28 10:37:56.068381 [DEBUG] sofia.c:6122 Remote SDP:
> v=0
> o=- 163879879 1 IN IP4 127.0.0.1
> s=webrtc (chrome 22.0.1189.0) - Doubango Telecom (sipML5 r000)
> t=0 0
> a=group:BUNDLE audio video
> m=audio 57293 RTP/SAVPF 103 104 0 8 106 105 13 126
> c=IN IP4 80.28.139.221
> a=rtcp:57293 IN IP4 80.28.139.221
> a=candidate:3460286729 1 udp 2130714367 192.168.3.1 56196 typ host
> generation 0
> a=candidate:3460286729 2 udp 2130714367 192.168.3.1 56196 typ host
> generation 0
> a=candidate:1004190935 1 udp 2130714367 192.168.10.25 55956 typ host
> generation 0
> a=candidate:1004190935 2 udp 2130714367 192.168.10.25 55956 typ host
> generation 0
> a=candidate:1734362844 1 udp 1912610559 80.28.139.221 57293 typ srflx
> generation 0
> a=candidate:1734362844 2 udp 1912610559 80.28.139.221 57293 typ srflx
> generation 0
> a=candidate:3130178147 1 udp 1912610559 88.9.167.79 59009 typ srflx
> generation 0
> a=candidate:3130178147 2 udp 1912610559 88.9.167.79 59009 typ srflx
> generation 0
> a=candidate:2159818233 1 tcp 1694506751 192.168.3.1 52952 typ host
> generation 0
> a=candidate:2159818233 2 tcp 1694506751 192.168.3.1 52952 typ host
> generation 0
> a=candidate:1968783399 1 tcp 1694506751 192.168.10.25 45540 typ host
> generation 0
> a=candidate:1968783399 2 tcp 1694506751 192.168.10.25 45540 typ host
> generation 0
> a=ice-ufrag:SdZ956Hj4vXnNOhU
> a=ice-pwd:PQ9aJYFiLGiUfKZqqDXxQdtF
> a=mid:audio
> a=rtcp-mux
> a=crypto:1 AES_CM_128_HMAC_SHA1_80
> inline:1j6B4cDFNA3Q99XoFujj3wYYex4ThJJNpOgbGifl
> a=rtpmap:103 ISAC/16000
> a=rtpmap:104 ISAC/32000
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:106 CN/32000
> a=rtpmap:105 CN/16000
> a=rtpmap:13 CN/8000
> a=rtpmap:126 telephone-event/8000
> a=ssrc:2321878499 cname:qlN/YrHlo6j9iIJY
> a=ssrc:2321878499 mslabel:w4BkX3vCh3pGAdk7f2fqpUd6NT7JS2miWIhu
> a=ssrc:2321878499 label:w4BkX3vCh3pGAdk7f2fqpUd6NT7JS2miWIhu00
> m=video 57293 RTP/SAVPF 100 101 102
> c=IN IP4 80.28.139.221
> a=rtcp:57293 IN IP4 80.28.139.221
> a=candidate:3460286729 1 udp 2130714367 192.168.3.1 56196 typ host
> generation 0
> a=candidate:3460286729 2 udp 2130714367 192.168.3.1 56196 typ host
> generation 0
> a=candidate:1004190935 1 udp 2130714367 192.168.10.25 55956 typ host
> generation 0
> a=candidate:1004190935 2 udp 2130714367 192.168.10.25 55956 typ host
> generation 0
> a=candidate:1734362844 1 udp 1912610559 80.28.139.221 57293 typ srflx
> generation 0
> a=candidate:1734362844 2 udp 1912610559 80.28.139.221 57293 typ srflx
> generation 0
> a=candidate:3130178147 1 udp 1912610559 88.9.167.79 59009 typ srflx
> generation 0
> a=candidate:3130178147 2 udp 1912610559 88.9.167.79 59009 typ srflx
> generation 0
> a=candidate:2159818233 1 tcp 1694506751 192.168.3.1 52952 typ host
> generation 0
> a=candidate:2159818233 2 tcp 1694506751 192.168.3.1 52952 typ host
> generation 0
> a=candidate:1968783399 1 tcp 1694506751 192.168.10.25 45540 typ host
> generation 0
> a=candidate:1968783399 2 tcp 1694506751 192.168.10.25 45540 typ host
> generation 0
> a=ice-ufrag:SdZ956Hj4vXnNOhU
> a=ice-pwd:PQ9aJYFiLGiUfKZqqDXxQdtF
> a=mid:video
> a=rtcp-mux
> a=crypto:1 AES_CM_128_HMAC_SHA1_80
> inline:1j6B4cDFNA3Q99XoFujj3wYYex4ThJJNpOgbGifl
> a=rtpmap:100 VP8/90000
> a=rtpmap:101 red/90000
> a=rtpmap:102 ulpfec/90000
>
>
>
>
> log when it fails:
>
> 2012-08-28 10:38:02.068442 [NOTICE] sofia.c:6853 Channel [sofia/
> 192.168.10.1/sip:2102 at 192.168.10.30:5062] has been answered
> 2012-08-28 10:38:02.068442 [DEBUG] sofia_glue.c:3948 Looking for zrtp-hash
> 2012-08-28 10:38:02.068442 [DEBUG] sofia_glue.c:3926 Deciding whether to
> pass zrtp-hash between legs
> 2012-08-28 10:38:02.068442 [DEBUG] sofia_glue.c:3928 CF_ZRTP_PASSTHRU_REQ
> not set, so not propagating zrtp-hash
> 2012-08-28 10:38:02.068442 [ERR] sofia_glue.c:4837 a=crypto in RTP/AVP,
> refer to rfc3711
> 2012-08-28 10:38:02.068442 [DEBUG] switch_core_session.c:772 Send signal
> sofia/192.168.1.2_nat/2303 at test.commsmundi.com [BREAK]
> 2012-08-28 10:38:02.068442 [DEBUG] switch_channel.c:2924
> (sofia/192.168.1.2_nat/2303 at test.commsmundi.com) Callstate Change RINGING
> -> HANGUP
> 2012-08-28 10:38:02.068442 [NOTICE] switch_channel.c:3412 Hangup
> sofia/192.168.1.2_nat/2303 at test.commsmundi.com [CS_EXECUTE]
> [INCOMPATIBLE_DESTINATION]
>
>
>
>   --
> Best regards,
>
>  _________________________
>
> António Silva
>
> E-mail:asilva at wirelessmundi.com
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
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>

-- 
Anthony Minessale II

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