* }
     * The {@code Principal} object returned will never be {@code null}
     * however the username can be {@code null} indication anonymous
     * credentials were used (e.g. some IPC$ services).
     */

    /**
     * Returns the principal used for authentication
     *
     * @return the authentication principal
     */
    public Principal getPrincipal() {
        return auth;

Where the spec is ambiguous, OkHttp follows modern user agents such as popular Browsers or common HTTP Libraries.

OkHttp is principled and avoids being overly configurable, especially when such configuration is
to workaround a buggy server, test invalid scenarios or that contradict the relevant RFC.

	public final fun -deprecated_localCertificates ()Ljava/util/List;
	public final fun -deprecated_localPrincipal ()Ljava/security/Principal;
	public final fun -deprecated_peerCertificates ()Ljava/util/List;
	public final fun -deprecated_peerPrincipal ()Ljava/security/Principal;
	public final fun -deprecated_tlsVersion ()Lokhttp3/TlsVersion;
	public final fun cipherSuite ()Lokhttp3/CipherSuite;

Em seguida, usamos `hero_db.sqlmodel_update(hero_data)` para atualizar o `hero_db` com os dados de `hero_data`.

{* ../../docs_src/sql_databases/tutorial002_an_py310.py ln[83:93] hl[83:84,88:89] *}

            }

            @Override
            public boolean isUserInRole(String role) {
                return false;
            }

            @Override
            public java.security.Principal getUserPrincipal() {
                return null;
            }

            @Override
            public String getRequestedSessionId() {
                return null;
            }

Esos detalles son específicos de la implementación.

Para OAuth2 son solo strings.

///

## Vista global

Primero, echemos un vistazo rápido a las partes que cambian desde los ejemplos en el **Tutorial - User Guide** principal para [OAuth2 con Password (y hashing), Bearer con tokens JWT](../../tutorial/security/oauth2-jwt.md){.internal-link target=_blank}. Ahora usando scopes de OAuth2:

///

## Sub Aplicaciones

     * @param providerUrl The provider URL.
     * @param principal The principal.
     * @param credntials The credentials.
     * @return The environment for LDAP connection.
     */
    protected Hashtable<String, String> createEnvironment(final String initialContextFactory, final String securityAuthentication,
            final String providerUrl, final String principal, final String credntials) {

            }

            @Override
            public boolean isUserInRole(String role) {
                return false;
            }

            @Override
            public java.security.Principal getUserPrincipal() {
                return null;
            }

            @Override
            public String getRequestedSessionId() {
                return null;
            }

## HTTPS para Desenvolvedores

Aqui está um exemplo de como uma API HTTPS poderia ser estruturada, passo a passo, com foco principal nas ideias relevantes para desenvolvedores.

### Nome do domínio