// attempted to be written.

	logReads, logWrites bool

	debugFramer       *http2Framer // only use for logging written writes
	debugFramerBuf    *bytes.Buffer
	debugReadLoggerf  func(string, ...interface{})
	debugWriteLoggerf func(string, ...interface{})

	frameCache *http2frameCache // nil if frames aren't reused (default)
}

func (fr *http2Framer) maxHeaderListSize() uint32 {