I want to inspect websocket messages with the latest Firefox.
I don't want to switch browsers. The situation is kind of messed up for me. I really don't want to move to closed-source browsers or to browsers like Chrome or Chromium that don't respect your privacy. I used to use ungoogled-chromium, but it receives updates way too rarely leaving you with critical vulnerabilities for weeks or months.
What I know
In the dev tools I can only see the web socket handshakes.
With Firefox Quantum the dev tool extension that I used for this just broke.
I don't think that Waterfox would solve the problem, as I don't want to miss out on features like electrolysis. And electrolysis is only compatible with WebExtensions, not with legacy extensions.
Is there any websocket inspection "web extension" that is compatible with Firefox Quantum?