En esta sección veremos cómo usar otros middlewares.

## Agregando middlewares ASGI

Como **FastAPI** está basado en Starlette e implementa la especificación <abbr title="Asynchronous Server Gateway Interface">ASGI</abbr>, puedes usar cualquier middleware ASGI.

Un middleware no tiene que estar hecho para FastAPI o Starlette para funcionar, siempre que siga la especificación ASGI.

 */

package jcifs.smb;

/**
 * The <code>SmbAuthException</code> encapsulates the variety of
 * authentication related error codes returned by an SMB server.
 * <p>
 * See <a href="../../../authhandler.html">jCIFS Exceptions and NtlmAuthenticator</a> for more information about
 * <code>SmbAuthException</code>.
 */

public class SmbAuthException extends SmbException {

     */
    DURABLE_V1(1),

    /**
     * SMB 3.0 durable handle V2 - with timeout configuration
     */
    DURABLE_V2(2),

    /**
     * SMB 3.0 persistent handle - survives server reboot
     */
    PERSISTENT(3);

    private final int value;

    HandleType(int value) {
        this.value = value;
    }

    /**
     * Get the numeric value of this handle type

///

## About "Form Fields" { #about-form-fields }

The way HTML forms (`<form></form>`) sends the data to the server normally uses a "special" encoding for that data, it's different from JSON.

**FastAPI** will make sure to read that data from the right place instead of JSON.

/// note | Technical Details

import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Cancel request message.
 *
 * This command is used to cancel a previously sent command
 * that is still being processed by the server.
 *
 * @author mbechler
 */
public class Smb2CancelRequest extends ServerMessageBlock2 implements CommonServerMessageBlockRequest {

    /**
     * Constructs a SMB2 cancel request
     *
     * @param config

    public static final int FORBIDDEN_STATUS_CODE = 403;

    /**
     * The HTTP status code for Not Found.
     */
    public static final int NOT_FOUND_STATUS_CODE = 404;

    /**
     * The HTTP status code for Server Error.
     */
    public static final int SERVER_ERROR_STATUS_CODE = 500;

    /**
     * A constant for no transformer.
     */
    public static final String NO_TRANSFORMER = "NONE";

    /**

 *
 */
@Deprecated
public interface ClasspathTransformation {
    String ROLE = ClasspathTransformation.class.getName();

    /**
     * Transform Graph into a Collection of metadata objects that
     * could serve as a classpath for a particular scope
     *
     * @param dirtyGraph - dependency graph
     * @param scope - which classpath to extract
     * @param resolve - whether to resolve artifacts.

 */
package jcifs.internal.smb2.nego;

import jcifs.Decodable;

/**
 * SMB2 Negotiate Context response data structure.
 *
 * This class represents negotiate contexts returned by the server
 * in response to negotiate context requests.
 *
 * @author mbechler
 */
public interface NegotiateContextResponse extends Decodable {

    /**
     * Gets the negotiate context type.
     *

import org.slf4j.LoggerFactory;

import jakarta.servlet.Filter;
import jakarta.servlet.FilterChain;
import jakarta.servlet.FilterConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import jcifs.smb1.Config;

    }

    /**
     * Creates a byte array representing a Kerberos ticket for testing purposes.
     * @param version Kerberos version
     * @param realm Server realm
     * @param principalName Server principal name
     * @param encType Encryption type
     * @param encryptedData Encrypted data
     * @param unknownTag Optional unknown tag number to test error handling