for k, v := range req.Form {
		if !defaultSigParams.Contains(k) {
			query[k] = v
		}
	}

	// Get the encoded query.
	encodedQuery := query.Encode()

	// Verify if date query is same.
	if req.Form.Get(xhttp.AmzDate) != query.Get(xhttp.AmzDate) {
		return ErrSignatureDoesNotMatch
	}
	// Verify if expires query is same.
	if req.Form.Get(xhttp.AmzExpires) != query.Get(xhttp.AmzExpires) {

				}, nil
			}

			body := []byte{}
			req := httptest.NewRequest("GET", "/objectlambda/"+bucketName+"/"+objectName+"?lambdaArn="+url.QueryEscape(lambdaARN), bytes.NewReader(body))
			req.Form = url.Values{"lambdaArn": []string{lambdaARN}}
			req.Header.Set("Host", "localhost")
			req.Header.Set("X-Amz-Date", time.Now().UTC().Format("20060102T150405Z"))
			sum := sha256.Sum256(body)

        final HttpServletRequest req = (HttpServletRequest) request;
        final HttpServletResponse resp = (HttpServletResponse) response;
        NtlmPasswordAuthentication ntlm = negotiate(req, resp, false);

        if (ntlm == null) {
            return;
        }

        chain.doFilter(new NtlmHttpServletRequest(req, ntlm), response);
    }

    /**

    @Override
    public void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws IOException, ServletException {
        Address dc;
        String msg, pathInfo, server = null;
        boolean offerBasic, possibleWorkgroup = true;
        NtlmPasswordAuthentication ntlm = null;
        final HttpSession ssn = req.getSession(false);

        pathInfo = req.getPathInfo();
        if (pathInfo != null) {

    @Override
    public void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws IOException, ServletException {
        UniAddress dc;
        String msg, pathInfo, server = null;
        boolean offerBasic, possibleWorkgroup = true;
        NtlmPasswordAuthentication ntlm = null;
        final HttpSession ssn = req.getSession(false);

        pathInfo = req.getPathInfo();
        if (pathInfo != null) {

                    req.nextElement();
                    if (req.hasMoreElements()) {
                        final SmbComBlankResponse interim = new SmbComBlankResponse();
                        super.sendrecv(req, interim, RESPONSE_TIMEOUT);
                        if (interim.errorCode != 0) {
                            checkStatus(req, interim);
                        }
                        req.nextElement();

     */
    public String getVirtualHostKey() {
        return LaRequestUtil.getOptionalRequest().map(req -> (String) req.getAttribute(FessConfig.VIRTUAL_HOST_VALUE)).orElseGet(() -> {
            final String value = processVirtualHost(s -> s, StringUtil.EMPTY);
            LaRequestUtil.getOptionalRequest().ifPresent(req -> req.setAttribute(FessConfig.VIRTUAL_HOST_VALUE, value));
            return value;
        });
    }

    /**

    s3ForcePathStyle: true,
    signatureVersion: 'v4'
});

// List all contents stored in the zip archive
s3.listObjectsV2({Bucket : 'your-bucket', Prefix: 'path/to/file.zip/'}).
    on('build', function(req) { req.httpRequest.headers['X-Minio-Extract'] = 'true'; }).
    send(function(err, data) {
        if (err) {
            console.log("Error", err);
        } else {
            console.log("Success", data);
        }

     */
    public NtlmPasswordAuthentication doAuthentication(final HttpServletRequest req, final HttpServletResponse resp, final byte[] challenge)
            throws IOException, ServletException {
        return authenticate(req, resp, challenge);
    }

    /**
     * Performs NTLM authentication for the servlet request.
     *
     * @param req The request being serviced.
     * @param resp The response.

 *
 * @param <Req> the type of the request
 * @param <Res> the type of the response
 */
public abstract class RequestBuilder<Req extends Request<Res>, Res extends Response> {
    /** The OpenSearch client. */
    protected Client client;
    /** The request being built. */
    protected Req request;

    /**
     * Constructor for RequestBuilder.