/var/log/red5/sip.log is showing no errors.
error.log does not show anything recent. last entry is 15 minutes before my latest refresh of the check page.
I can connect to the demo conference and hear my own voice and I see WebRTC audio is being used, but the check fails..
Also, line 2 below, does any modern browser support the java plugin anymore? That test does not seem useful..
WebRTC Echo Test: 1004 : undefined
Java Enabled: Java is disabled in your browser : undefined
Browser: Firefox 54.0 : undefined
Client Check Version: VERSION : undefined
Cookie Enabled: true : undefined
Download Speed: 6.206 Mbps (7.718 MB in 10 seconds) : undefined
Flash Version: 26.0.0.151 : undefined
Is Pepper Flash: false : undefined
Language: en-US : undefined
Ping: 70.6 ms : undefined
RTMP BigBlueButton app: NetConnection.Connect.Success : undefined
RTMP screenshare app: NetConnection.Connect.Success : undefined
RTMP sip app: NetConnection.Connect.Success : undefined
RTMP video app: NetConnection.Connect.Success : undefined
RTMPT BigBlueButton app: NetConnection.Connect.Success : undefined
RTMPT screenshare app: NetConnection.Connect.Success : undefined
RTMPT sip app: NetConnection.Connect.Success : undefined
RTMPT video app: NetConnection.Connect.Success : undefined
Screen Size: 1920 x 1080 : undefined
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0 : undefined
WebRTC Socket Test: Connected : undefined
WebRTC Supported: true : undefined