Thanks Brian for your suggestion but the webrtc_enable_dtls flag does not seem to have an effect.

Without the "media_webrtc=true" I have no DTLS in the B leg SDP INVITE(no fingerprint nor setup attributes), having or not "webrtc_enable_dtls" on top of the "media_webrtc=true" does not seem to have any effect on the INVITE produced.



On 07/06/2021 14::35, Brian West wrote:

Try setting webrtc_enable_dtls=true in {} on the originate.
On 07/06/2021 09:55, Johan Pascal wrote:

Hi,

I'm trying to get freeswitch to direct a call to a linphone client using DTLS, as described here:

https://freeswitch.org/confluence/display/FREESWITCH/Certificates#Certificates-DTLS


The A leg with a DTLS client works fine but the B leg, while enabling correctly DTLS in the SDP INVITE(fingerprint and setup attributes) produces a media description using the proto "RTP/SAVPF".

Linphone does not accept this proto as a DTLS call but expect "UDP/TLS/RTP/SAVPF". I'm using freeswitch v1.10.6, I found in the freeswitch code there

https://github.com/signalwire/freeswitch/blob/v1.10.6/src/switch_core_media.c#L9715

a test to switch to the expected proto but I can't find a way in the freeswitch settings/dialplan to get the CF_AVPF_MOZ flag on. When forcing the outcome of the test to be always true, I get my particular use case to work but I guess there is a more harmless way to proceed. Any suggestion?

Thanks,

Johan


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