Firefox documentation needed

I have some trouble getting CRI working with Firefox.

First of all the documentation should probably mention that --remote-debugger is only built in the nightly version of Firefox. Unfortunately it still doesn’t work for me:

$ firefox-nightly --remote-debugger 127.0.0.1:44001
DevTools listening on ws://localhost:44001/devtools/browser/428fb6bc-b3d3-1f40-a278-ea4cb7f31abb
IPDL protocol error: Handler returned error code!
$ ./node_modules/chrome-remote-interface/bin/client.js -p 44001 list
Error: Bad request

Am I missing something?

[cyrus-and]

OK for the buggy part (which I haven’t really tested), the fact that it implements a subset of the original CDP is already stated, it would be nice that Mozilla provided documentation about what domains are implemented… Users can still obtain the actual protocol using the Protocol function and sub command.

Thanks for your timely support!

[Niek]

Don’t ask me why, but I managed to get it working with --remote-debugging-port PORT instead of --remote-debugger 127.0.0.1:PORT. It seems that the latter one listens specifically on hostname localhost (even though I specify the IP) and requests without the Host: localhost header return a 400 Bad Request. Starting FF while specifying only the port works fine.