├── 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
- [ ] Create reconnection logic with handle replay
- [ ] Add timeout management for durable handles

package jcifs.internal.smb2.persistent;

/**
 * Enumeration of SMB2/3 handle types supporting durability and persistence.
 */
public enum HandleType {
    /**
     * No durability - standard handle
     */
    NONE(0),

    /**
     * SMB 2.1 durable handle - survives network loss
     */
    DURABLE_V1(1),

    /**
     * SMB 3.0 durable handle V2 - with timeout configuration
     */
    DURABLE_V2(2),

    /**
     * Checks if this tree handle refers to the same tree as another
     * @param th the tree handle to compare with
     * @return whether the handles refer to the same tree
     */
    boolean isSameTree(SmbTreeHandle th);

    /**
     * Checks if this tree handle uses SMB2 or later protocol
     * @return whether this tree handle uses SMB2+
     */
    boolean isSMB2();

    /**

package jcifs.dcerpc.msrpc;

/**
 * MSRPC implementation for opening an alias handle.
 * This class provides functionality to open a handle to a SAM alias
 * (local group) using the SAMR RPC interface.
 */
public class MsrpcSamrOpenAlias extends samr.SamrOpenAlias {

    /**
     * Creates a new request to open an alias handle.
     *
     * @param handle the domain handle
     * @param access the desired access rights

            SIDCacheImpl cache = new SIDCacheImpl(mock(CIFSContext.class));
            DcerpcHandle handle = mock(DcerpcHandle.class);
            LsaPolicyHandle policy = mock(LsaPolicyHandle.class);
            jcifs.SID[] none = new jcifs.SID[0];

            cache.resolveSids(handle, policy, none);
            verify(handle, times(1)).sendrecv(any(jcifs.dcerpc.msrpc.MsrpcLookupSids.class));
        }
    }

        auth.handle(cbs);

        // Name should be formatted as username@domain
        assertEquals("user@DOM", nc.getName());
        // Password should be set
        assertEquals("pass", new String(pc.getPassword()));
    }

    @Test
    @DisplayName("handle: sets only provided callbacks (name-only)")
    void testHandleNameOnly() throws Exception {

 */
@Named
@Singleton
public class DefaultExceptionHandler implements ExceptionHandler {
    @Override
    public ExceptionSummary handleException(Throwable exception) {
        return handle("", exception);
    }

    private ExceptionSummary handle(String message, Throwable exception) {
        String reference = getReference(Collections.newSetFromMap(new IdentityHashMap<>()), exception);

        List<ExceptionSummary> children = null;

        @Test
        @DisplayName("Should handle null hash algorithms")
        void testNullHashAlgorithms() {
            context = new PreauthIntegrityNegotiateContext(mockConfig, null, new byte[16]);

            assertNull(context.getHashAlgos());
            assertEquals(20, context.size()); // 4 header + 16 salt
        }

        @Test
        @DisplayName("Should handle null salt")
        void testNullSalt() {

            // Test PRINT share type
            setPrivateField(response, "shareType", Smb2TreeConnectResponse.SMB2_SHARE_TYPE_PRINT);
            assertEquals(Smb2TreeConnectResponse.SMB2_SHARE_TYPE_PRINT, response.getShareType(), "Should handle PRINT share type");
        }

        @Test
        @DisplayName("Should handle share flags")

        SmbFileHandleImpl handle = mock(SmbFileHandleImpl.class);
        when(dest.openUnshared(anyInt(), anyInt(), anyInt(), anyInt(), anyInt())).thenReturn(handle);

        int attrs = SmbConstants.ATTR_NORMAL;

        // Act
        SmbFileHandleImpl result = SmbCopyUtil.openCopyTargetFile(dest, attrs, alsoRead);

        // Assert
        assertSame(handle, result, "Should return handle from dest.openUnshared");