I am using Restcomm's Android SDK and trying to configure it to our servers, but getting the following error:
RCConnection Error: setSDP Error: Failed to set remote offer sip: Called with SDP without DTLS fingerprint
But when I changing back to Restcomm servers it works fine.
I have tried to search it at Google and Git, but the solutions offered there did not help. Any idea how to solve the issue ( please explain in details since I am new in WebRTC ) ?
EDIT:
In case when I call from mobile to web or from the web to web it works fine. The problem occurs only when the mobile tries to accept the call.
Please make sure your server supports DTLS-SRTP for the Media and ICE Lite procedures.