*
     * @throws IOException if a network error occurs
     */

    @Override
    public int read(final byte[] b) throws IOException {
        return read(b, 0, b.length);
    }

    /**
     * Reads up to len bytes of data from this input stream into an array of bytes.
     *
     * @throws IOException if a network error occurs
     */

    @Override

		c.Fatalf("could not read test key file: %s", err)
	}

	testKey, _, _, _, err := ssh.ParseAuthorizedKey(keyBytes)
	if err != nil {
		c.Fatalf("could not parse test key file: %s", err)
	}

	newSSHCon := newSSHConnMock("dillon=ldap")
	_, err = sshPubKeyAuth(newSSHCon, testKey)
	if err != nil {
		c.Fatalf("expected no error but got(%s)", err)
	}

	newSSHCon = newSSHConnMock("dillon")

}

func (n *DeletedAt) UnmarshalJSON(b []byte) error {
	if string(b) == "null" {
		n.Valid = false
		return nil
	}
	err := json.Unmarshal(b, &n.Time)
	if err == nil {
		n.Valid = true
	}
	return err
}

func (DeletedAt) QueryClauses(f *schema.Field) []clause.Interface {
	return []clause.Interface{SoftDeleteQueryClause{Field: f, ZeroValue: parseZeroValueTag(f)}}
}

func parseZeroValueTag(f *schema.Field) sql.NullString {

     *
     * @param builder a {@link Consumer} that accepts an {@link XPathFactory} and configures it.
     * @return a configured instance of {@link XPath}.
     * @throws CrawlerSystemException if an error occurs while creating the {@link XPath} instance.
     */
    public XPath createXPath(final Consumer<XPathFactory> builder) {
        try {
            final XPathFactory factory = XPathFactory.newInstance();

	var tHdr, tMeta []byte // Zero copy bytes
	for i := range versions {
		tHdr, buf, err = msgp.ReadBytesZC(buf)
		if err != nil {
			return err
		}
		tMeta, buf, err = msgp.ReadBytesZC(buf)
		if err != nil {
			return err
		}
		if err = fn(i, tHdr, tMeta); err != nil {
			if err == errDoneForNow {
				err = nil
			}
			return err
		}
	}
	return nil

                    shareName, registration.getRegistrationId());
            })
            .exceptionally(error -> {
                log.error("Failed to register for witness notifications", error);
                return null;
            });
            
    } catch (Exception e) {
        log.error("Error registering for witness notifications", e);
    }
}

///

Ahora, obtén los datos del usuario desde la base de datos (falsa), usando el `username` del campo del form.

Si no existe tal usuario, devolvemos un error diciendo "Incorrect username or password".

Para el error, usamos la excepción `HTTPException`:

{* ../../docs_src/security/tutorial003_an_py310.py hl[3,79:81] *}

### Revisa el password

 * This exception indicates that an external command or process execution encountered an error.
 */
public class CommandExecutionException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructor with error message.
     * @param message The error message describing the command execution failure.
     */
    public CommandExecutionException(final String message) {

     * @param workstation the workstation
     * @param challenge the Type 2 challenge message
     * @return the Base64-encoded Type 3 message
     * @throws NTLMEngineException if an NTLM engine error occurs
     * @throws CrawlingAccessException if an error occurs during message generation
     */
    @Override
    public String generateType3Msg(final String username, final String password, final String domain, final String workstation,

        // Test RuntimeException
        RuntimeException runtimeEx = new RuntimeException("Runtime error");
        assertEquals("Runtime error", runtimeEx.getMessage());

        // Test Exception
        Exception generalEx = new Exception("General error");
        assertEquals("General error", generalEx.getMessage());

        // Test with null message