[SR-Users] [rtpengine] DTLS error: 1 (message digest is null)

[Paul Belanger]

Greetings,

I'm having some trouble getting dtls-srtp working with kamailio 4.1
(mediaproxy-ng) and rtpengine (master).

I believe I finally have my branch logic setup properly in kamailio,
however when the calls get placed into rtpengine, it appears DTLS is
not initialized properly. Attached is my debug log file.

[Richard Fuchs]

Post by Paul Belanger
Greetings,
I'm having some trouble getting dtls-srtp working with kamailio 4.1
(mediaproxy-ng) and rtpengine (master).
I believe I finally have my branch logic setup properly in kamailio,
however when the calls get placed into rtpengine, it appears DTLS is
not initialized properly. Attached is my debug log file.

From the little I can find online about this error, it may be a problem
with your OpenSSL version. I'm running 1.0.1h and I haven't seen this yet.

cheers

[Paul Belanger]

Post by Paul Belanger
Greetings,
I'm having some trouble getting dtls-srtp working with kamailio 4.1
(mediaproxy-ng) and rtpengine (master).
I believe I finally have my branch logic setup properly in kamailio,
however when the calls get placed into rtpengine, it appears DTLS is
not initialized properly. Attached is my debug log file.

From the little I can find online about this error, it may be a problem with
your OpenSSL version. I'm running 1.0.1h and I haven't seen this yet.

Th

[Paul Belanger]

Post by Paul Belanger
Greetings,
I'm having some trouble getting dtls-srtp working with kamailio 4.1
(mediaproxy-ng) and rtpengine (master).
I believe I finally have my branch logic setup properly in kamailio,
however when the calls get placed into rtpengine, it appears DTLS is
not initialized properly. Attached is my debug log file.

From the little I can find online about this error, it may be a problem with
your OpenSSL version. I'm running 1.0.1h and I haven't seen this yet.

Thanks for the reply, this is what I suspected too. Since your reply
I quickly setup a Debian 7.0 instance and got rtpengine to negotiate
DTLS-SRTP properly. So, it does appear a minimum requirement for
openssl is needed.

My development box was ubuntu 12.04 with openssl 1.0.1. I'll open up
a pull request shortly to update the documentation.