What error code when concurrent stream limit is exceeded

PROTOCOL_ERROR:
https://github.com/http2/http2-spec/pull/651

PROTOCOL_ERROR or REFUSED_STREAM:
https://github.com/http2/http2-spec/pull/652

There's two views on this: the zero tolerance extreme who would
probably also choose to treat the stream error as a connection error;
the permissive one who don't like to punish errors more than is
necessary.  The full range of views is accommodated by the second PR,
so I prefer that marginally.  It still lets implementations fail as
hard as possible.

Received on Sunday, 23 November 2014 21:26:42 UTC