@Mock
    private SmbTransport mockNewTransport;

    @Mock
    private CommonServerMessageBlock mockOperation;

    private ChannelFailover failover;
    private ChannelInfo failedChannel;

    @BeforeEach
    void setUp() throws UnknownHostException {
        failover = new ChannelFailover(mockChannelManager);

        InetAddress addr = InetAddress.getByName("192.168.1.100");

		for _, conf := range testConfigs {
			failOnErr := func(err error) {
				if err != nil {
					logger.Fatal(errSelfTestFailure, "%v: error on self-test [d:%d,p:%d]: %v. Unsafe to start server.\n", algo, conf[0], conf[1], err)
				}
			}
			e, err := NewErasure(context.Background(), int(conf[0]), int(conf[1]), blockSizeV2)
			failOnErr(err)
			encoded, err := e.EncodeData(GlobalContext, testData[:])

    }

    /**
     * State tracking for channel failover
     */
    public static class FailoverState {

        private final String channelId;
        private final long failureTime;
        private int retryCount;
        private long nextRetryTime;

        /**
         * Create failover state
         *
         * @param channelId channel identifier
         */

## 1. Overview

SMB3 Multi-Channel enables the use of multiple network connections between client and server, providing increased throughput, network fault tolerance, and automatic failover capabilities. This feature aggregates bandwidth across multiple NICs and provides seamless failover when network paths fail.

## 2. Protocol Specification Reference

- **MS-SMB2 Section 3.2.4.23**: FSCTL_QUERY_NETWORK_INTERFACE_INFO

 */
public enum WitnessEventType {
    /**
     * Resource state changed - general resource state modification
     */
    RESOURCE_CHANGE(1),

    /**
     * Client should move to different node - directed failover
     */
    CLIENT_MOVE(2),

    /**
     * Share moved to different node - share mobility event
     */
    SHARE_MOVE(3),

    /**
     * IP address changed - network configuration change
     */

    
    // Simulate cluster failover (would require test environment setup)
    // ... trigger server failover ...
    
    // Verify that witness notification was received and handled
    assertTrue(listener.waitForNotification(30000));  // 30 second timeout
    
    // Verify file is still accessible after failover
    assertTrue(file.exists());
}

@Test

Calls are executed in one of two ways:

 * **Synchronous:** your thread blocks until the response is readable.

/**
 * SMB Witness Protocol client implementation as defined in MS-SWN specification.
 * 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)

    protected boolean forceExtendedSecurity = false;
    /** Whether to negotiate only SMB2 or higher protocols */
    protected boolean smb2OnlyNegotiation = false;
    /** Whether to failover to port 139 if port 445 fails */
    protected boolean port139FailoverEnabled = false;
    /** Whether to use NT SMB operations */
    protected boolean useNTSmbs = true;

requires a setting in the replication configuration called [replica modification sync](https://aws.amazon.com/about-aws/whats-new/2020/12/amazon-s3-replication-adds-support-two-way-replication/).

For active-active replication, automatic failover occurs on `GET/HEAD` operations if object or object version requested qualifies for replication and is missing on one site, but present on the other. This allows the applications to take full advantage of two-way replication even before the two sites...