this.address = address;
    }

    /**
     * Adds a listener for connection events.
     *
     * @param listener The listener to add.
     */
    public void addOnConnectListener(final OnConnectListener listener) {
        onConnectListenerList.add(listener);
    }

    /**
     * Checks if the client is connected to OpenSearch.
     *

        // Test with listener1
        factory.setOnDestroyListener(listener1);
        assertEquals(listener1, factory.getOnDestroyListener());
        factory.destroyObject(pooledObject);
        assertEquals(1, events.size());
        assertEquals("listener1", events.get(0));

        // Switch to listener2
        factory.setOnDestroyListener(listener2);
        assertEquals(listener2, factory.getOnDestroyListener());

import org.apache.ftpserver.FtpServer;
import org.apache.ftpserver.FtpServerFactory;
import org.apache.ftpserver.ftplet.FtpException;
import org.apache.ftpserver.ftplet.UserManager;
import org.apache.ftpserver.listener.ListenerFactory;
import org.apache.ftpserver.usermanager.impl.BaseUser;
import org.codelibs.core.io.InputStreamUtil;
import org.codelibs.core.io.ResourceUtil;
import org.codelibs.fess.crawler.Constants;