Video call encountered crypto suite issue

[tao chen]

Hi,

currently I'm working on video call via rtpengine, but audio works, video doesn't.

you can see from the logs attached,  there are some crypto suite error output even after receiving answer command:

[srtp] SRTP output wanted, but no crypto suite was negotiated

I'm wondering if this causes video traffic drop and failure.

log file attached, video traffic port on rtpengine server is 49332, audio port is 36992.

thanks a lot for all the help.  

[Richard Fuchs]

Hard to say without a higher logging level, but a first guess would be
due to

rtpengine:2024-05-29T12:55:39:main.cpp:156:main:(11895) INFO:
[ksa8cuis2fjj35f4nejo]: [crypto] DTLS fingerprint changed, restarting DTLS

It doesn't look like the DTLS connection from before the re-invite gets
re-established, so that leaves one side without negotiated SRTP.

Cheers