import jcifs.CIFSContext;
import jcifs.internal.smb2.lease.Smb2LeaseKey;

/**
 * Manager for persistent and durable SMB handles.
 *
 * This class provides:
 * - Handle lifecycle management
 * - Persistent storage for persistent handles
 * - Expiration tracking for durable handles
 * - Thread-safe access to handle information
 */
public class PersistentHandleManager {

 */
package jcifs.internal.smb2.persistent;

import java.io.Serializable;
import java.util.Arrays;

import jcifs.internal.smb2.lease.Smb2LeaseKey;

/**
 * Information about a durable or persistent SMB handle.
 * This class holds all the necessary information to reconnect
 * a handle after network failures or server reboots.
 */
public class HandleInfo implements Serializable {

import jcifs.internal.smb2.create.CreateContextRequest;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Durable Handle Reconnect Create Context (DHnC)
 *
 * MS-SMB2 Section 2.2.13.2.5
 */
public class DurableHandleReconnect implements CreateContextRequest {

    /**
     * Context name for durable handle reconnect
     */
    public static final String CONTEXT_NAME = "DHnC";

            String[] contextNames = { "DHnQ", // Durable handle request
                    "DHnC", // Durable handle reconnect
                    "AlSi", // Allocation size
                    "MxAc", // Max access
                    "TWrp", // Timewarp
                    "QFid", // Query on disk ID
                    "RqLs", // Request lease
                    "DH2Q", // Durable handle request V2

├── PersistentHandleManager.java     - Handle persistence management
├── DurableHandleRequest.java        - Durable handle v1 support
├── DurableHandleV2Request.java      - Durable handle v2 with timeout
└── HandleReconnector.java           - Automatic handle reconnection
```

#### 2.2 Implementation Tasks
- [ ] Implement persistent/durable handle contexts
- [ ] Add handle GUID generation and tracking
- [ ] Implement handle state serialization

import java.util.concurrent.CompletableFuture;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.internal.smb2.create.Smb2CreateRequest;

/**
 * Handles automatic reconnection of durable and persistent SMB handles.
 *
 * This class provides retry logic with exponential backoff for handle
 * reconnection after network failures or server issues.
 */
public class HandleReconnector {

import jcifs.internal.smb2.persistent.HandleGuid;
import jcifs.internal.smb2.persistent.HandleType;
import jcifs.internal.smb2.persistent.Smb2HandleCapabilities;

/**
 * Test class for durable handle create context implementations
 */
public class DurableHandleContextTest {

    @Test
    public void testDurableHandleRequest() {
        DurableHandleRequest request = new DurableHandleRequest();

        assertEquals(testLeaseKey, info.getLeaseKey());
        assertFalse(info.isReconnecting());
        assertNull(info.getFile());
    }

    @Test
    public void testHandleInfoExpiration() {
        // Test durable handle expiration
        HandleInfo durableInfo = new HandleInfo("/test/file.txt", testGuid, testFileId, HandleType.DURABLE_V2, 100, // 100ms timeout
                null);

        assertFalse(durableInfo.isExpired());

 */
package jcifs.internal.smb2.persistent;

import java.io.Serializable;
import java.nio.ByteBuffer;
import java.util.UUID;

/**
 * Handle GUID structure for SMB2/3 durable and persistent handles.
 * Provides a unique identifier for each handle that can be used
 * for reconnection after network failures or server reboots.
 *
 * According to MS-SMB2, the GUID is a 16-byte structure with little-endian

     */
    boolean isAllowGuestFallback();

    /**
     * Property {@code jcifs.smb.client.useDurableHandles}, defaults to true
     *
     * @return whether to use durable handles for improved reliability
     */
    boolean isUseDurableHandles();

    /**
     * Property {@code jcifs.smb.client.usePersistentHandles}, defaults to false
     *