* @param tf the CIFS context to use
     * @param name the server name or address
     * @param port the port number
     * @param exclusive whether to acquire an unshared connection
     * @param forceSigning whether to enforce SMB signing
     * @return a connected transport
     * @throws UnknownHostException if the host cannot be resolved
     * @throws IOException if an I/O error occurs
     */

 *
 * @author mbechler
 */
public interface SmbResourceLocatorInternal extends SmbResourceLocator {

    /**
     * Determines whether SMB signing should be enforced for connections to this resource.
     *
     * @return whether to enforce the use of signing on connection to this resource
     */
    boolean shouldForceSigning();

    /**

    /**
     * Enforce secure negotiation
     *
     * Property {@code jcifs.smb.client.requireSecureNegotiate} (boolean, default true)
     *
     * This does not provide any actual downgrade protection if SMB1 is allowed.
     *
     * It will also break connections with SMB2 servers that do not properly sign error responses.
     *
     * @return whether to enforce the use of secure negotiation.
     */

* An optional `grant_type`.

/// tip

The OAuth2 spec actually *requires* a field `grant_type` with a fixed value of `password`, but `OAuth2PasswordRequestForm` doesn't enforce it.

If you need to enforce it, use `OAuth2PasswordRequestFormStrict` instead of `OAuth2PasswordRequestForm`.

///

* An optional `client_id` (we don't need it for our example).

 * serialization of funnels. When possible, it is recommended that funnels be implemented as a
 * single-element enum to maintain serialization guarantees. See Effective Java (2nd Edition), Item
 * 3: "Enforce the singleton property with a private constructor or an enum type". For example:
 *
 * {@snippet :
 * public enum PersonFunnel implements Funnel<Person> {
 *   INSTANCE;

        assertNotNull(contexts);
        assertEquals(0, contexts.length);
        assertNull(request.getPreauthSalt());
    }

    @Test
    @DisplayName("Should enforce signing when required flag is set")
    void testSigningEnforced() {
        // When
        request = new Smb2NegotiateRequest(mockConfig, Smb2Constants.SMB2_NEGOTIATE_SIGNING_REQUIRED);

        // Then

   *
   * HTTP/2 requires deployments of HTTP/2 that use TLS 1.2 support
   * [CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256], present in Java 8+ and Android 5+.
   * Servers that enforce this may send an exception message including the string
   * `INADEQUATE_SECURITY`.
   */
  HTTP_2("h2"),

  /**
   * Cleartext HTTP/2 with no "upgrade" round trip. This option requires the client to have prior

    private static final MonotonicClock CLOCK = new MonotonicClock();

    private final long startNanos;
    private final Instant startInstant;

    /**
     * Private constructor to enforce singleton pattern.
     * Initializes the clock with the current system time and nanoTime.
     */
    private MonotonicClock() {
        this.startNanos = System.nanoTime();

   * that would be a problem because it violates small-test rules. Note that we strip the
   * suppression externally, but it's OK because we don't enforce test-size rules there.)
   *
   * We'd just use PackageSanityTests directly, saving us from needing this separate type, but we're
   * currently skipping MediumTests on Android, and we skip them by not making them present at

    protected boolean useUnicode = true;
    /** Force use of Unicode encoding regardless of negotiation */
    protected boolean forceUnicode = false;
    /** Whether SMB signing is preferred but not required */
    protected boolean signingPreferred = false;
    /** Whether SMB signing is enforced (required) */
    protected boolean signingEnforced = false;
    /** Whether to enforce signing for IPC connections */