#### 4.3 Integration Points
- Extend `SmbFile` for directory lease support
- Modify directory listing operations for caching
- Update change notification handling

---

### Phase 5: RDMA (SMB Direct) Support
**Priority: LOW** | **Estimated Effort: 8-10 weeks**

RDMA provides high-speed, low-latency data transfer for supported network adapters.

#### 5.1 Core RDMA Infrastructure
```

    protected final BlockingQueue<RdmaWorkRequest> pendingRequests;

    // Connection state
    /** Current connection state */
    protected volatile RdmaConnectionState state;
    /** Credit management for SMB Direct */
    protected RdmaCredits credits;
    /** Maximum size for fragmented operations */
    protected int maxFragmentedSize;
    /** Maximum size for RDMA read/write operations */
    protected int maxReadWriteSize;

    /**
     * Create new RDMA negotiation response
     */
    public RdmaNegotiateResponse() {
        // Initialize with default values
        this.status = 0; // Success
        this.selectedVersion = 0x0100; // SMB Direct 1.0
        this.creditsGranted = 0;
        this.maxReceiveSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
        this.maxReadWriteSize = RdmaCapabilities.DEFAULT_MAX_READ_WRITE_SIZE;

     * @param isDirect whether to use direct transmission
     * @throws IOException if an I/O error occurs
     */
    protected abstract void doSendFragment(byte[] buf, int off, int length, boolean isDirect) throws IOException;

    /**
     * Receives a DCERPC fragment from the remote endpoint
     * @param buf the buffer to receive the fragment
     * @param isDirect whether to use direct reception

    @DisplayName("Should handle time encoding/decoding")
    void testTimeOperations() {
        // Given
        Date currentDate = new Date();
        byte[] buffer = new byte[8];

        // When - Use direct encoding methods since time constants are private
        Encdec.enc_uint64le(currentDate.getTime(), buffer, 0);
        long decoded = Encdec.dec_uint64le(buffer, 0);

        // Then

        // Hexdump.toHexString produces uppercase hex
        assertTrue(result.toLowerCase().contains("0x001200a9"));
        // ACE.toString() outputs "Direct    " with 4 spaces
        assertTrue(result.contains("Direct"));
        assertTrue(result.contains("This folder only"));
    }

    @Test
    @DisplayName("Test toString format for deny ACE")

        public long getLastAccessTime() {
            return lastAccessTime;
        }

        @Override
        public long getSize() {
            return size;
        }
    }

    // --- Happy path: direct values are returned as provided ---
    @Test
    void returnsProvidedValues_happyPath() {
        // Arrange

        }

        // Retrieve direct groups synchronously (parent group lookup is deferred)
        processDirectMemberOf(user, groupList, roleList, groupIdsForParentLookup, "https://graph.microsoft.com/v1.0/me/memberOf");

        if (logger.isDebugEnabled()) {
            logger.debug("[updateMemberOf] Direct groups retrieved. Total groups: {}, Total roles: {}, Group IDs for parent lookup: {}",

     */
    public static final File tmpDir = new File(System.getProperty("java.io.tmpdir"));

    /**
     * Protected constructor to prevent direct instantiation but allow inheritance.
     */
    protected Curl() {
        // nothing
    }

    /**
     * Creates a new CurlRequest with the HTTP GET method for the specified URL.
     *

import jcifs.SmbSession;
import jcifs.SmbTransport;
import jcifs.smb.SmbException;
import jcifs.smb.SmbTransportInternal;

/**
 * RDMA-enabled SMB transport that wraps existing SMB transport
 * and adds RDMA capabilities for direct memory access operations.
 */
public class RdmaTransport implements SmbTransportInternal {
    private static final Logger log = LoggerFactory.getLogger(RdmaTransport.class);

    private final SmbTransportInternal delegate;