I think you are right Sergey.  Should it be fixed on the FS side or on the client SDK side though?  Which is the right value?

By the way, the SDK can do either dtls or sdes.  This issue happens with dtls.  Sdes works fine and I can establish a call.


On Aug 16, 2016 10:14 PM, "Sergey Safarov" <s.safarov@gmail.com> wrote:
Think issue related to "m=audio 61434 UDP/TLS/RTP/SAVP"
Try "m=audio 61434 RTP/SAVP"

ср, 17 авг. 2016 г. в 5:35, Oleg Stolyar <olegstolyar@gmail.com>:
Thanks Gonzalo,

That setup on the FS side refers to TLS and as I said TLS is working for me, I have it set up.  

SRTP should work out of the box AFAIK.  I suspect there is something in the SDP I posted that FS considers to be non-compliant with the specs.  Not sure what though and whether it's a bug in FS or in the client SDK I am using.

On Tue, Aug 16, 2016 at 7:22 PM, Gonzalo Gasca Meza <gascagonzalo@gmail.com> wrote:
Did you enable/configure SRTP? This is a sample guide I use for Twilio TLS/SRTP which can help
Can you post all logs?


On Tue, Aug 16, 2016 at 6:10 PM, Oleg Stolyar <olegstolyar@gmail.com> wrote:
Hi guys,

I am trying to connect to FS using the CounterPath SDK for Android.  I use TLS for signalling.  All works well until I try to enable SRTP.  Then FS rejects the call the INCOMPATIBLE_DESTINATION message.  Is there something wrong with the SDP?  Here are the relevant SDPs from the INVITES.

NON-SRTP (works)
   v=0
   o=- 622419737965 1 IN IP4 192.168.1.78
   s=
   c=IN IP4 192.168.1.78
   t=0 0
   m=audio 57194 RTP/AVP 3 120 123 122 121 9 8 0 84 85 18 101
   a=rtpmap:120 opus/48000/2
   a=fmtp:120 useinbandfec=1; usedtx=1; maxaveragebitrate=64000
   a=rtpmap:123 SILK/24000
   a=rtpmap:122 SILK/16000
   a=rtpmap:121 SILK/8000
   a=rtpmap:84 speex/16000
   a=rtpmap:85 speex/8000
   a=rtpmap:18 G729/8000
   a=fmtp:18 annexb=yes
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=sendrecv

SRTP (does not work)
   v=0
   o=- 622187157154 1 IN IP4 192.168.1.78
   s=
   c=IN IP4 192.168.1.78
   t=0 0
   a=fingerprint:SHA-256 4D:08:D6:49:9E:CA:77:A2:77:74:02:A0:B9:92:32:2F:2D:76:7D:59:7F:A4:CA:85:16:BA:D0:27:0A:74:1C:0F
   a=setup:actpass
   m=audio 61434 UDP/TLS/RTP/SAVP 3 120 123 122 121 9 8 0 84 85 18 101
   a=rtpmap:120 opus/48000/2
   a=fmtp:120 useinbandfec=1; usedtx=1; maxaveragebitrate=64000
   a=rtpmap:123 SILK/24000
   a=rtpmap:122 SILK/16000
   a=rtpmap:121 SILK/8000
   a=rtpmap:84 speex/16000
   a=rtpmap:85 speex/8000
   a=rtpmap:18 G729/8000
   a=fmtp:18 annexb=yes
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=sendrecv


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