code: func (r *recorder) Hijack() (net.Conn, *bufio.ReadWriter, error) {
  	// return to the recorder the recorder, which is the recorder side of the connection
  	rw := bufio.NewReadWriter(bufio.NewReader(r.server), bufio.NewWriter(r.server))
  	return r.server, rw, nil
  }
docs: // Hijack the connection