if (calledName == null) {
            this.calledName = address.hostName;
        } else {
            this.calledName = new Name(calledName, 0x20, null);
        }
        soTimeout = Config.getInt("jcifs.smb1.netbios.soTimeout", DEFAULT_SO_TIMEOUT);
        connect();
    }

    /**
     * Returns the NetBIOS address associated with this socket.
     *
     * @return the NetBIOS address
     */

		<property name="connectionTimeout">15000</property>
		<property name="soTimeout">30000</property>
	</component>

	<!-- HC4 (Alternative - for backward compatibility) -->
	<component name="internalHc4HttpClient" class="org.codelibs.fess.crawler.client.http.Hc4HttpClient"
		instance="prototype">
		<property name="connectionTimeout">15000</property>
		<property name="soTimeout">30000</property>
	</component>
	<component name="httpClient"

  @Throws(SocketException::class)
  override fun getSendBufferSize(): Int = delegate!!.sendBufferSize

  @Throws(SocketException::class)
  override fun getSoTimeout(): Int = delegate!!.soTimeout

  @Throws(SocketException::class)
  override fun getTcpNoDelay(): Boolean = delegate!!.tcpNoDelay

  @Throws(SocketException::class)
  override fun setKeepAlive(keepAlive: Boolean) {

 * @param source the source used to read bytes from the socket.
 */
internal fun Socket.isHealthy(source: BufferedSource): Boolean =
  try {
    val readTimeout = soTimeout
    try {
      soTimeout = 1
      !source.exhausted()
    } finally {
      soTimeout = readTimeout
    }
  } catch (_: SocketTimeoutException) {
    true // Read timed out; socket is good.
  } catch (_: IOException) {

    public static final String CONNECTION_TIMEOUT_PROPERTY = "connectionTimeout";

    /** Property name for socket timeout setting */
    public static final String SO_TIMEOUT_PROPERTY = "soTimeout";

    /** Property name for proxy host setting */
    public static final String PROXY_HOST_PROPERTY = "proxyHost";

    /** Property name for proxy port setting */

    @Override
    public void init(final ServletConfig config) throws ServletException {
        super.init(config);

        /* Set jcifs.smb1 properties we know we want; soTimeout and cachePolicy to 10min.
         */
        Config.setProperty("jcifs.smb1.smb.client.soTimeout", "300000");
        Config.setProperty("jcifs.smb1.netbios.cachePolicy", "600");

        final Enumeration e = config.getInitParameterNames();
        String name;

        final Properties p = new Properties();
        p.putAll(System.getProperties());
        /*
         * Set jcifs properties we know we want; soTimeout and cachePolicy to 10min.
         */
        p.setProperty("jcifs.smb.client.soTimeout", "300000");
        p.setProperty("jcifs.netbios.cachePolicy", "600");

        final Enumeration<String> e = config.getInitParameterNames();
        String name;

    }

    /**
     * Sets the socket timeout in milliseconds.
     *
     * @param soTimeout The socket timeout
     */
    public void setSoTimeout(final Integer soTimeout) {
        this.soTimeout = soTimeout;
    }

    /**
     * Sets the cookie specification to use.
     *
     * @param cookieSpec The cookie specification
     */

    }

    /**
     * Sets the socket timeout in milliseconds.
     *
     * @param soTimeout The socket timeout
     */
    public void setSoTimeout(final Integer soTimeout) {
        this.soTimeout = soTimeout;
    }

    /**
     * Sets the cookie specification to use.
     *
     * @param cookieSpec The cookie specification
     */

HcHttpClient (abstract base class)
    ├── Hc4HttpClient
    └── Hc5HttpClient
```

Switch via system property: `-Dfess.crawler.http.client=hc4` or `hc5` (default)

**Key Properties**: `connectionTimeout`, `soTimeout`, `proxyHost`, `proxyPort`, `userAgent`, `robotsTxtEnabled`, `ignoreSslCertificate`, `maxTotalConnection`, `defaultMaxConnectionPerRoute`

### CrawlerClientFactory

Pattern-based client selection (from `crawler/client.xml`):