* @return True if the negotiation is complete, otherwise false
     * @throws ServletException
     */
    protected NtlmPasswordAuthentication negotiate ( HttpServletRequest req, HttpServletResponse resp, boolean skipAuthentication )
            throws IOException, ServletException {
        Address dc;
        String msg;
        NtlmPasswordAuthentication ntlm = null;

        } catch (final Exception ignored) {}
    }

    protected void handleFileUploadException(final FileUploadException e) throws ServletException {
        // suppress logging because it can be caught by logging filter
        //log.error("Failed to parse multipart request", e);
        throw new ServletException("Failed to upload the file.", e);
    }

    // ===================================================================================

    private boolean loadBalance;
    private boolean enableBasic;
    private boolean insecureBasic;
    private String realm;

    public void init( FilterConfig filterConfig ) throws ServletException {
        String name;
        int level;

        /* Set jcifs.smb1 properties we know we want; soTimeout and cachePolicy to 30min.
         */

import java.util.Date;
import java.util.Enumeration;
import java.util.GregorianCalendar;
import java.util.LinkedList;
import java.util.ListIterator;
import java.util.Properties;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.lastaflute.web.servlet.request.RequestManager;
import org.lastaflute.web.servlet.session.SessionManager;

import jakarta.annotation.PostConstruct;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletInputStream;
import jakarta.servlet.ServletOutputStream;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

    private NtlmSsp ntlmSsp;
    private boolean credentialsSupplied;
    private boolean enableBasic;
    private boolean insecureBasic;
    private String realm, defaultDomain;

    public void init() throws ServletException {
        InputStream is;
        StringBuffer sb = new StringBuffer();
        byte[] buf = new byte[1024];
        int n, level;
        String name;