Allow frames to send after the arrival of the RST_STREAM.

[adamhenson]

Prevent exceptions for the common case in which the serving endpoint sends frames after the RST_STREAM has been sent from the client endpoint. Often frames are enqueued prior to the arrival of the RST_STREAM, but sent after. This should be expected based on HTTP/2 spec, section 6.4.

https://http2.github.io/http2-spec/#rfc.section.6.4

"However, after sending the RST_STREAM, the sending endpoint MUST be prepared to receive and process additional frames sent on the stream that might have been sent by the peer prior to the arrival of the RST_STREAM."

[Pupix]

Can confirm it's working for me too. Thanks!

[bjb568]

@nwgh http2 is unusably crashy, this PR fixes that. When will it be merged?

[lujjjh]

When will it be merged?

[benjamingwynn]

This should be merged. It's been months.

[75lb]

works for me too, thanks - i can push multiple resources now..

[hthetiot]

merged https://github.com/kaazing/node-http2/commit/9420db76401f73372c4f6d9d9b30d5553ea313eb