I could see SRTP packets coming from one device but they never leave
rtpeninge.

I put a link to Pastebin containing a call trace with the hope that someone
might help me out.

I could provide more info if required.

https://pastebin.com/tYVpFQAh

Br, Aqs.


On 10 April 2018 at 01:39, Aqs Younas <aqsyou...@gmail.com> wrote:

> Greetings list,
>
> I am trying to make two endpoints talking on DTLS-SRTP. But I hear on
> audio.
>
> Things work perfectly fine if I use RTP or SRTP with TLS.
>
> Endpoints are pjsip based application not webrtc based clients.
>
>
> Below are logs from rtpengine. I hope someone could point out amiss.
>
> Apr  9 20:02:43 centos-1024mb-nyc-02 rtpengine[58438]: INFO:
> [66d2da58-21fe-48bd-9999-a1f3a22afa6d]: --------- Port
> 209.182.216.71:8176  <>   72.214.35.171:63577, SSRC 1234c6eb, 641 p,
> 110252 b, 0 e, 60 ts
> Apr  9 20:02:43 centos-1024mb-nyc-02 rtpengine[58438]: INFO:
> [66d2da58-21fe-48bd-9999-a1f3a22afa6d]: --------- Port
> 209.182.216.71:8177  <>   72.214.35.171:63056 (RTCP), SSRC 1234c6eb, 4 p,
> 372 b, 0 e, 60 ts
> Apr  9 20:12:24 centos-1024mb-nyc-02 rtpengine[58438]: INFO: Version
> git-master-3ef300b shutting down
> Apr  9 20:12:37 centos-1024mb-nyc-02 rtpengine[58958]: INFO: Generating
> new DTLS certificate
> Apr  9 20:12:37 centos-1024mb-nyc-02 rtpengine[58959]: INFO: Startup
> complete, version git-master-3ef300b
> Apr  9 20:13:43 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08]: Received command 'offer' from
> 127.0.0.1:57645
> Apr  9 20:13:43 centos-1024mb-nyc-02 rtpengine[58959]: NOTICE:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08]: Creating new call
> Apr  9 20:13:43 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08]: offer time = 0.002612 sec
> Apr  9 20:13:43 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08]: Replying to 'offer' from
> 127.0.0.1:57645
> Apr  9 20:13:56 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08]: Received command 'answer' from
> 127.0.0.1:42309
> Apr  9 20:13:56 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08]: answer time = 0.000220 sec
> Apr  9 20:13:56 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08]: Replying to 'answer' from
> 127.0.0.1:42309
> Apr  9 20:13:56 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8000]: DTLS: Peer certificate
> accepted
> Apr  9 20:13:56 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8000]: DTLS-SRTP successfully
> negotiated
> Apr  9 20:13:57 centos-1024mb-nyc-02 rtpengine[58959]: ERR:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8000]: SRTP output wanted,
> but no crypto suite was negotiated
> Apr  9 20:14:00 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8000]: Confirmed peer address
> as 72.214.35.171:58634
> Apr  9 20:14:07 centos-1024mb-nyc-02 rtpengine[58959]: ERR:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8001]: SRTCP output wanted,
> but no crypto suite was negotiated
> Apr  9 20:14:07 centos-1024mb-nyc-02 rtpengine[58959]:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08] version=2, padding=0, count=1,
> payloadtype=200, length=12, ssrc=2045607967, ntp_sec=1379282714,
> ntp_fractions=439054259, rtp_ts=1838072137, sender_packets=3366262813,
> sender_bytes=2383498210, ssrc=815258372, fraction_lost=96,
> packet_loss=13713522, last_seq=3314313929, jitter=2878956247,
> last_sr=2456273253, delay_since_last_sr=3351655681
> Apr  9 20:14:07 centos-1024mb-nyc-02 rtpengine[58959]: INFO:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8001]: Confirmed peer address
> as 72.214.35.171:57732
> Apr  9 20:14:12 centos-1024mb-nyc-02 rtpengine[58959]: ERR:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8000]: SRTP output wanted,
> but no crypto suite was negotiated
> Apr  9 20:14:17 centos-1024mb-nyc-02 rtpengine[58959]:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08] version=2, padding=0, count=1,
> payloadtype=200, length=12, ssrc=2045607967, ntp_sec=2811881700,
> ntp_fractions=4080266212, rtp_ts=371429680, sender_packets=958830616,
> sender_bytes=2579186043, ssrc=1909756377, fraction_lost=174,
> packet_loss=11416637, last_seq=3106722675, jitter=758758394,
> last_sr=2663618457, delay_since_last_sr=1399181077
> Apr  9 20:14:27 centos-1024mb-nyc-02 rtpengine[58959]: ERR:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8000]: SRTP output wanted,
> but no crypto suite was negotiated
> Apr  9 20:14:27 centos-1024mb-nyc-02 rtpengine[58959]: ERR:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08 port  8001]: SRTCP output wanted,
> but no crypto suite was negotiated
> Apr  9 20:14:27 centos-1024mb-nyc-02 rtpengine[58959]:
> [a5ca8335-84d2-4daf-a0e2-6465e72b6d08] version=2, padding=0, cou
>
>
> It is how I have programmed it in my Kamailio configuration.
>
> ON INVITE
>
> rtpengine_offer("replace-origin replace-session-connection ICE=remove
> UDP/TLS/RTP/SAVP");
>
> ON 200-ok
>
> rtpengine_answer("replace-origin replace-session-connection ICE=remove
> UDP/TLS/RTP/SAVP");
>
>
> Best Regards,
>
> Aqs Younas
>
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