}

    /**
     * Resolves a hostname to an InetAddress.
     *
     * @param host the hostname to resolve
     * @return the resolved InetAddress
     * @throws FessSystemException if hostname resolution fails
     */
    protected InetAddress getInetAddressByName(final String host) {
        try {
            return InetAddress.getByName(host);
        } catch (final UnknownHostException e) {

        override fun createSocket(
          host: InetAddress,
          port: Int,
        ): Socket? = null

        override fun createSocket(
          address: InetAddress,
          port: Int,
          localAddress: InetAddress,
          localPort: Int,
        ): Socket? = null

        override fun createSocket(
          host: String,

import java.io.IOException
import java.io.InterruptedIOException
import java.net.CookieManager
import java.net.CookiePolicy
import java.net.HttpCookie
import java.net.HttpURLConnection
import java.net.InetAddress
import java.net.ProtocolException
import java.net.Proxy
import java.net.SocketTimeoutException
import java.net.UnknownHostException
import java.net.UnknownServiceException
import java.time.Duration

            if (address != null && address.length() > 0) {
                final byte[] ip = java.net.InetAddress.getByName(address).getAddress();
                addresses = new UniAddress[1];
                addresses[0] = new UniAddress(java.net.InetAddress.getByAddress(host, ip));
                return getNextAddress();
            }
        }

        if (host.length() == 0) {