code: public void setStripedActive(HostPortList hpl)
          throws IOException,
                 ServerException {
          Command cmd = new Command("SPOR", hpl.toFtpCmdArgument());
  
          try {
              controlChannel.execute(cmd);
          } catch (UnexpectedReplyCodeException urce) {
              throw ServerException.embedUnexpectedReplyCodeException(urce);
          } catch(FTPReplyParseException rpe) {
              throw ServerException.embedFTPReplyParseException(rpe);
          }
  
          this.gSession.serverMode = GridFTPSession.SERVER_EACT;
      }
docs: Sets remote server to striped active server mode (SPOR).