I coded up a "light" communication service, "Commoxy". It's about 1200 lines of Python, including comments. Read about it:

https://commoxy.org/primer/

Source code:

http://sources.vsta.org:7100/commoxy/index

Give it a spin:

https://commoxy.org/

Comments welcome, especially if your browser's audio formats don't line up yet (tested w. various Firefox and Chrome versions, desktop and mobile, also iOS).