// bytes. The length of payload will always equal fh.Length (which
// might be 0).
type http2frameParser func(fc *http2frameCache, fh http2FrameHeader, countError func(string), payload []byte) (http2Frame, error)

var http2frameParsers = map[http2FrameType]http2frameParser{
	http2FrameData:         http2parseDataFrame,
	http2FrameHeaders:      http2parseHeadersFrame,