RST_STREAM and FINAL flag

[Martin Thomson <[e-mail]>]

James raised this:

https://github.com/http2/http2-spec/issues/77

"... what is not explicitly stated anywhere in the draft is that the
FINAL flag for the RST_STREAM frame MUST be set. Likewise with
GOAWAY..."

I don't think that it matters what the FINAL flag says for RST_STREAM
- processing the frame closes the stream in totality, so whether the
stream gets half-closed in the process is largely irrelevant.  Same
for GOAWAY.

Also, "what happens if an endpoint sends a RST_STREAM with stream
identifier #0 ? "

My take: this is very bad.  Don't do that, but if you do see it, then
it's a PROTOCOL_ERROR.