countError("frame_headers_pad_short")
			return
		}
	}
	if fh.Flags.Has(http2FlagHeadersPriority) {
		var v uint32
		p, v, err = http2readUint32(p)
		if err != nil {
			countError("frame_headers_prio_short")
			return nil, err
		}
		hf.Priority.StreamDep = v & 0x7fffffff
		hf.Priority.Exclusive = (v != hf.Priority.StreamDep) // high bit was set
		p, hf.Priority.Weight, err = http2readByte(p)