WebSocket#run doesn't catch errors other than EOF

[RX14]

WebSocket#run currently catches an IO::EOFError, and calls the on_close handler. Should this happen with other exceptions where the socket is closed, for example connection reset by peer?

[asterite]

I'm not sure, I think we are missing an exception handler above that and an on_error or something like that. The websocket code is pretty young and misses a lot of things, probably also a way to use it without callbacks.

[RX14]

Maybe on_close should only be called when the "close" message type is received. This keeps it's function specific and well-defined. Other errors should propagate up and be handled by the #run caller.

[straight-shoota]

Resolved by #8975 et al