I am using electron-webrtc. You need xvfb installed. I was able to get this running under node, but only running the processes under tmux. You will also need to install some random shared libraries Chromium needs, but which node-electron doesn't install, but these are obvious from error messages.
Then I'm using simple-peer on top of that. There's also a library for UDP communications from the node process to the golang process.
