working on HPACK test case

Hi

Just announcement.

We gathering hpack encode/decode test case while working on hpack
implementation.

https://github.com/Jxck/hpack-test-case

this repository has pair of raw http header and hpack encoded hexdump in
several implementation (currently, go-hpack, haskell-http2, nghttp2 and
node-http2-hpack)

we use this for testing our encoder / decoder among each implementation.

If you implementing encoder / decoder of hpack, these test case will help
you. see more detail in readme.

thanks.

Jxck