- **MS-SMB2 Section 2.2.35**: SMB2 Change Notify Request
- **MS-SMB2 Section 2.2.36**: SMB2 Change Notify Response
- **MS-SMB2 Section 3.3.5.9.11**: Directory Leasing and Caching

## 3. Directory Lease Types

### 3.1 Directory-Specific Lease States
```java
public class DirectoryLeaseState extends Smb2LeaseState {
    // Standard lease states apply, plus directory-specific semantics:
    
    // READ_CACHING for directories means:

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.smb1.smb1;

import jcifs.smb1.util.Hexdump;

abstract class AndXServerMessageBlock extends ServerMessageBlock {

    private static final int ANDX_COMMAND_OFFSET = 1;
    private static final int ANDX_RESERVED_OFFSET = 2;

 */
package jcifs.internal.smb2.notify;

import java.util.ArrayList;
import java.util.List;

import jcifs.Configuration;
import jcifs.FileNotifyInformation;
import jcifs.internal.NotifyResponse;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.smb1.trans.nt.FileNotifyInformationImpl;
import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.util.SMBUtil;

import jcifs.internal.smb1.trans.TransWaitNamedPipe;
import jcifs.internal.smb1.trans.TransWaitNamedPipeResponse;
import jcifs.internal.smb2.ioctl.Smb2IoctlRequest;
import jcifs.internal.smb2.ioctl.Smb2IoctlResponse;
import jcifs.util.ByteEncodable;

/**
 * @author mbechler
 *
 */
class SmbPipeHandleImpl implements SmbPipeHandleInternal {

import jcifs.CIFSException;
import jcifs.Configuration;
import jcifs.SmbConstants;
import jcifs.internal.smb1.com.ServerData;
import jcifs.internal.smb1.com.SmbComNegotiateResponse;
import jcifs.internal.smb1.com.SmbComTreeConnectAndXResponse;
import jcifs.internal.smb2.nego.Smb2NegotiateResponse;
import jcifs.internal.smb2.tree.Smb2TreeConnectResponse;

class SmbTreeImplTest {

    @Mock
    private SmbSessionImpl session;

     *
     */
    private Smb3KeyDerivation() {
    }

    /**
     * Derives the SMB3 signing key from the session key using the appropriate KDF for the dialect.
     *
     * @param dialect the SMB dialect version
     * @param sessionKey the base session key
     * @param preauthIntegrity the pre-authentication integrity hash (for SMB 3.1.1) or null
     * @return derived signing key
     */

import jcifs.internal.smb1.trans2.Trans2SetFileInformation;
import jcifs.internal.smb1.trans2.Trans2SetFileInformationResponse;
import jcifs.internal.smb2.info.Smb2SetInfoRequest;
import jcifs.internal.smb2.ioctl.Smb2IoctlRequest;
import jcifs.internal.smb2.ioctl.Smb2IoctlResponse;
import jcifs.internal.smb2.ioctl.SrvCopyChunkCopyResponse;
import jcifs.internal.smb2.ioctl.SrvCopychunk;
import jcifs.internal.smb2.ioctl.SrvCopychunkCopy;

    protected static final short SMB2_WRITE = 0x0009;
    /** SMB2 lock file command */
    protected static final short SMB2_LOCK = 0x000A;
    /** SMB2 IO control command */
    protected static final short SMB2_IOCTL = 0x000B;
    /** SMB2 cancel command */
    protected static final short SMB2_CANCEL = 0x000C;
    /** SMB2 echo/keepalive command */
    protected static final short SMB2_ECHO = 0x000D;

 */
package jcifs.internal.smb2;

import jcifs.Configuration;
import jcifs.internal.CommonServerMessageBlockRequest;
import jcifs.internal.CommonServerMessageBlockResponse;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.smb.NtStatus;

/**
 * Base class for SMB2/SMB3 response messages.
 *
 * This abstract class provides common functionality for handling

import jcifs.internal.SMBSigningDigest;
import jcifs.internal.util.SMBUtil;
import jcifs.util.Crypto;

/**
 * SMB2/SMB3 message signing digest implementation.
 *
 * This class handles cryptographic signing of SMB2/SMB3 messages to ensure
 * message integrity and authenticity. It supports different signing algorithms
 * used in various SMB2/SMB3 dialect versions.
 *
 * @author mbechler
 */