[Freeswitch-users] Issue connecting to FS with SRTP

[Oleg Stolyar]

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 at gmail.com>
wrote:

> Did you enable/configure SRTP? This
> <http://twilio-marketing-prod.elasticbeanstalk.com/resources/images/docs/TwilioSecure-Freeswitch.pdf>
> 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 at 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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>
>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
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>
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