}
    }

    // Test with different hostnames
    @Test
    public void test_differentHostnames() {
        String[] hostnames = { "smtp.gmail.com", "mail.example.com", "localhost", "192.168.1.1" };

        for (String hostname : hostnames) {
            ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {

 * crawling from duplicate hostnames to the regular canonical hostname.
 */
public class CreateForm {

    /**
     * Creates a new CreateForm instance.
     */
    public CreateForm() {
    }

    /** The CRUD operation mode for form processing */
    @ValidateTypeFailure
    public Integer crudMode;

    /** The regular canonical hostname that should be used */
    @Required

import jakarta.annotation.PostConstruct;

/**
 * Helper class for managing duplicate host configurations in the Fess search system.
 * This class handles URL conversion based on duplicate host rules, allowing multiple
 * hostnames or URLs to be treated as equivalent for crawling and indexing purposes.
 * It maintains a list of DuplicateHost rules and applies them to URLs.
 *
 */
public class DuplicateHostHelper {

 * including navigation controls and search/filter parameters.
 *
 * <p>Duplicate hosts allow administrators to define hostname patterns that should
 * be treated as equivalent during crawling, helping to avoid duplicate content
 * from the same logical site accessed via different hostnames.</p>
 */
public class DuplicateHostPager implements Serializable {

    private static final long serialVersionUID = 1L;

        // IPv4 addresses - should remain unchanged
        assertEquals("127.0.0.1", IpAddressUtil.formatForUrl("127.0.0.1"));
        assertEquals("192.168.1.1", IpAddressUtil.formatForUrl("192.168.1.1"));

        // Hostnames - should remain unchanged
        assertEquals("localhost", IpAddressUtil.formatForUrl("localhost"));
        assertEquals("example.com", IpAddressUtil.formatForUrl("example.com"));

        // Null

 * duplicate host configurations used by the Fess crawler system.
 *
 * <p>Duplicate host configurations allow administrators to define hostname patterns
 * that should be treated as equivalent during crawling. This helps avoid indexing
 * duplicate content from the same logical site that may be accessible via different
 * hostnames (e.g., www.example.com and example.com).</p>
 */
public class DuplicateHostService extends FessAppService {

    /**

    /**
     * Set the value of hostname, used in parameter comment. <br>
     * Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.
     * @param hostname The parameter value of hostname. (NotNull)
     */
    public void setHostname(String hostname) {
        registerVariable("hostname", hostname);
    }

    /**

    /**
     * Set the value of hostname, used in parameter comment. <br>
     * Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.
     * @param hostname The parameter value of hostname. (NotNull)
     */
    public void setHostname(String hostname) {
        registerVariable("hostname", hostname);
    }

        this.fileConfigId = value;
    }

    public String getHostname() {
        checkSpecifiedProperty("hostname");
        return convertEmptyToNull(hostname);
    }

    public void setHostname(String value) {
        registerModifiedProperty("hostname");
        this.hostname = value;
    }

    public String getParameters() {
        checkSpecifiedProperty("parameters");

        this.createdTime = value;
    }

    public String getHostname() {
        checkSpecifiedProperty("hostname");
        return convertEmptyToNull(hostname);
    }

    public void setHostname(String value) {
        registerModifiedProperty("hostname");
        this.hostname = value;
    }

    public String getParameters() {
        checkSpecifiedProperty("parameters");