func (self *ProtobufRequestHandler) WriteResponse(conn net.Conn, response *protocol.Response) error {
	if response.Size() >= MAX_RESPONSE_SIZE {
		f, s := splitResponse(response)
		err := self.WriteResponse(conn, f)
		if err != nil {
			return err
		}
		return self.WriteResponse(conn, s)
	}

	data, err := response.Encode()
	if err != nil {
		log.Error("error encoding response: %s", err)
		return err
	}

	buff := bytes.NewBuffer(make([]byte, 0, len(data)+8))
	binary.Write(buff, binary.LittleEndian, uint32(len(data)))
	_, err = conn.Write(append(buff.Bytes(), data...))
	if err != nil {
		log.Error("error writing response: %s", err)
		return err
	}
	return nil
}