/** Send a SOCKS V4 request. */
  private void socksSendRequest(int command, InetAddress address, int port) throws IOException {
    Socks4Message request = new Socks4Message();
    request.setCommandOrResult(command);
    request.setPort(port);
    request.setIP(address.getAddress());
    request.setUserId("default"); // $NON-NLS-1$

    getOutputStream().write(request.getBytes(), 0, request.getLength());
  }