Firefox’s New WebSocket Inspector
This is really cool, but I'm slightly sad that it looks like they've taken the same approach as Chrome: treat the whole websocket connection as  a single item in the list of requests, and then show the frames within separately when it's selected.Imo, it'd be much better to have a UI that interleaved full HTTP requests with websocket frames, so you can see the comparative timing of the both (and of frames across multiple WSs) rather than having to look at all of them separately.