Can I turn off SRTP when use webrtc

Question

Now I test webrtc communicate with SIP Client(sx20)

I send invite message with webrtc sdp. but sip client answer has not finger print, and

sip client answer is

Answer 1

For testing purposes, Chrome Canary and Chrome Developer both have a flag which allows you to turn off SRTP, for example:

cd /Applications/Google\ Chrome\ Canary.app/Contents/MacOS/
./Google\ Chrome\ Canary --disable-webrtc-encryption

Then your SDP with the RTP setup would look more like:

m=audio 17032 RTP/AVPF 111 126

Instead of:

m=audio 17254 UDP/TLS/RTP/SAVPF 111 126