}

func http2parseWindowUpdateFrame(_ *http2frameCache, fh http2FrameHeader, countError func(string), p []byte) (http2Frame, error) {
	if len(p) != 4 {
		countError("frame_windowupdate_bad_len")
		return nil, http2ConnectionError(http2ErrCodeFrameSize)
	}
	inc := binary.BigEndian.Uint32(p[:4]) & 0x7fffffff // mask off high reserved bit
	if inc == 0 {
		// A receiver MUST treat the receipt of a