+ ",maxMpxCount=" + this.negotiated.getNegotiatedMpxCount() + ",VC_NUMBER=" + getConfig().getVcNumber() + ",sessionKey="
                + this.negotiated.getNegotiatedSessionKey() + ",lmHash.length=" + (this.lmHash == null ? 0 : this.lmHash.length)

            final byte[] decryptionKey = Smb3KeyDerivation.deriveDecryptionKey(dialectInt, sessionKey, preauthHash);

            // Pass session key and preauthHash to enable automatic key rotation
            return new Smb2EncryptionContext(cipherId, dialect, encryptionKey, decryptionKey, sessionKey, preauthHash);
        } catch (final Exception e) {

        }

        return conn;
    }

    class ServerData {
        byte flags;
        int flags2;
        int maxMpxCount;
        int maxBufferSize;
        int sessionKey;
        int capabilities;
        String oemDomainName;
        int securityMode;
        int security;
        boolean encryptedPasswords;
        boolean signaturesEnabled;
        boolean signaturesRequired;

```java
public class SecureChannelBinding {
    private final byte[] sessionKey;
    
    public byte[] generateChannelBindingHash(ChannelInfo channel) throws GeneralSecurityException {
        // Use HMAC-SHA256 for channel binding
        Mac mac = Mac.getInstance("HmacSHA256");
        SecretKeySpec keySpec = new SecretKeySpec(sessionKey, "HmacSHA256");
        mac.init(keySpec);
        

        assertTrue(noKey.getMessage().contains("No session key"));

        // Set a key via reflection and verify retrieval
        byte[] key = new byte[] { 1, 2, 3, 4 };
        setField(session, "sessionKey", key);
        assertArrayEquals(key, session.getSessionKey());
    }

    @Test
    @DisplayName("getSmbTree returns same instance for same share/service")
    void testGetSmbTreeReuses() {

     */
    public int getKeyCount() {
        return sessionKeys.size();
    }

    /**
     * Check if a session key exists
     *
     * @param sessionId session identifier
     * @return true if key exists
     */
    public boolean hasSessionKey(String sessionId) {
        checkNotClosed();
        return sessionKeys.containsKey(sessionId) || (keyStore != null && keyStoreContainsKey(sessionId));

Vamos criar uma **dependência** do FastAPI com `yield` que fornecerá uma nova `Session` para cada requisição. Isso é o que garante que usamos uma única sessão por requisição. 🤓

Então, criamos uma dependência `Annotated` chamada `SessionDep` para simplificar o restante do código que usará essa dependência.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[25:30] hl[25:27,30] *}

### Criar Tabelas de Banco de Dados na Inicialização

Затем мы создадим объявленную (`Annotated`) зависимость `SessionDep`. Мы сделаем это для того, чтобы упростить остальной код, который будет использовать эту зависимость.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[25:30]  hl[25:27,30] *}

Crearemos una **dependencia de FastAPI** con `yield` que proporcionará una nueva `Session` para cada request. Esto es lo que asegura que usemos una sola session por request. 🤓

Luego creamos una dependencia `Annotated` `SessionDep` para simplificar el resto del código que usará esta dependencia.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[25:30]  hl[25:27,30] *}

### Crear Tablas de Base de Datos al Arrancar

We will create a FastAPI **dependency** with `yield` that will provide a new `Session` for each request. This is what ensures that we use a single session per request. 🤓

Then we create an `Annotated` dependency `SessionDep` to simplify the rest of the code that will use this dependency.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[25:30]  hl[25:27,30] *}