* Manages witness registrations, notifications, and heartbeats for cluster failover support.
 */
public class WitnessClient implements AutoCloseable {
    private static final Logger log = LoggerFactory.getLogger(WitnessClient.class);

    // Polling and backoff constants (in ms)
    private static final long MAX_POLL_INTERVAL = 5000; // Normal polling: max 5 seconds

    // Getters and setters...
}
```

## 5. Integration with Existing Code

### 5.1 Session Integration
```java
// In SmbSession.java
private WitnessClient witnessClient;
private boolean witnessEnabled;

public void initializeWitnessSupport() {
    Configuration config = context.getConfig();
    
    if (!config.isUseWitness()) {
        return;
    }
    

                    this.channelManager = null;
                }

                // Shutdown witness client
                if (this.witnessClient != null) {
                    this.witnessClient.close();
                    this.witnessClient = null;
                    this.witnessEnabled = false;
                }

                // Clear trees collection atomically

import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.internal.witness.WitnessRegistration.WitnessRegistrationState;

/**
 * Unit tests for WitnessClient class using mocks.
 */
@ExtendWith(MockitoExtension.class)
public class WitnessClientTest {

    @Mock
    private CIFSContext mockContext;

    @Mock
    private Configuration mockConfig;

**Priority: LOW** | **Estimated Effort: 4-5 weeks**

Witness protocol enables rapid failover notification for clustered file servers.

#### 6.1 Core Witness Infrastructure
```
Package: jcifs.internal.witness
├── WitnessClient.java           - Witness client implementation
├── WitnessRegistration.java     - Client registration with witness
├── WitnessNotification.java     - Notification handling