Uncaught KilledByHttp2ThreadManager exceptions

[edsko]

When running the test suite, we're getting output such as

Uncaught exception in ThreadId 9542 (unknown label): KilledByHttp2ThreadManager (Just ConnectionIsClosed)

(coming from uncaughtExceptionHandler in test-grapesy/Main.hs). I previously tried to fix this (kazu-yamamoto/http2#92) but something changed somewhere and now we're still seeing these exceptions occassionally. I think it doesn't infer with the functionality of the library, but it's confusing output nonetheless.

[edsko]

@FinleyMcIlwaine The threads created by grapesy are labelled, but the threads created by http2 are not. I have a WIP branch at https://github.com/edsko/http2/tree/edsko/thread-labelling to address this. I'm not sure what the status of it is, it for sure needs rebasing, and it might be incomplete.

[edsko]

Possibly related: #123 (comment) (I thought I fixed these though by adding more general functions upstream to http2 - mentioning it just in case.)

[FinleyMcIlwaine]

I am not seeing these messages on main anymore after #183

[edsko]

We're not seeing this anymore (as of 492c351). Closing.