protected static void close(TRTrackerServerImpl server) {
    try {
      class_mon.enter();

      server.closeSupport();

      if (servers.remove(server)) {

        for (int i = 0; i < listeners.size(); i++) {

          ((TRTrackerServerFactoryListener) listeners.get(i)).serverDestroyed(server);
        }
      }
    } finally {

      class_mon.exit();
    }
  }
  public static TRTrackerServer create(
      String name,
      int protocol,
      int port,
      InetAddress bind_ip,
      boolean ssl,
      boolean apply_ip_filter,
      boolean main_tracker,
      boolean start_up_ready)
      throws TRTrackerServerException {
    try {
      class_mon.enter();

      TRTrackerServerImpl server;

      if (protocol == TRTrackerServerFactory.PR_TCP) {

        if (COConfigurationManager.getBooleanParameter("Tracker TCP NonBlocking")
            && main_tracker
            && !ssl) {

          server =
              new TRNonBlockingServer(
                  name,
                  port,
                  bind_ip,
                  apply_ip_filter,
                  start_up_ready,
                  new TRNonBlockingServerProcessorFactory() {
                    public TRNonBlockingServerProcessor create(
                        TRTrackerServerTCP _server, SocketChannel _socket) {
                      return (new NonBlockingProcessor(_server, _socket));
                    }
                  });
        } else {

          server = new TRBlockingServer(name, port, bind_ip, ssl, apply_ip_filter, start_up_ready);
        }

      } else if (protocol == TRTrackerServerFactory.PR_UDP) {

        if (ssl) {

          throw (new TRTrackerServerException("TRTrackerServerFactory: UDP doesn't support SSL"));
        }

        server = new TRTrackerServerUDP(name, port, start_up_ready);

      } else {

        server = new TRTrackerServerDHT(name, start_up_ready);
      }

      servers.add(server);

      for (int i = 0; i < listeners.size(); i++) {

        ((TRTrackerServerFactoryListener) listeners.get(i)).serverCreated(server);
      }

      return (server);

    } finally {

      class_mon.exit();
    }
  }