private static final int WITNESS_INTERFACE_VERSION = 1;

    // RPC connection parameters
    private static final int WITNESS_RPC_PORT = 135;
    private static final int WITNESS_RPC_TIMEOUT_MS = 5000;

    // RPC operation numbers
    private static final int WITNESS_REGISTER = 0;
    private static final int WITNESS_UNREGISTER = 1;
    private static final int WITNESS_ASYNC_NOTIFY = 2;
    private static final int WITNESS_HEARTBEAT = 3;

 */
public class ChannelInfo {

    private final String channelId;
    private volatile SmbTransport transport;
    private final NetworkInterfaceInfo localInterface;
    private final NetworkInterfaceInfo remoteInterface;
    private volatile ChannelState state;
    private final long establishedTime;
    private volatile long lastActivityTime;

    // Performance metrics
    private final AtomicLong bytesSent;

     */
    protected final List<String> readings;

    /**
     * The list of fields associated with the elevate word.
     */
    protected final List<String> fields;

    /**
     * The list of tags associated with the elevate word.
     */
    protected final List<String> tags;

    /**
     * The list of roles associated with the elevate word.
     */

    private final Set<Name> inFlightLookups = new HashSet<>();

    private final int lport;

    private int closeTimeout;
    private final byte[] snd_buf, rcv_buf;
    private DatagramSocket socket;
    private final DatagramPacket in, out;
    private final Map<Integer, NameServicePacket> responseTable = new HashMap<>();
    private Thread thread;
    private int nextNameTrnId = 0;

 */
class Kerb5Context implements SSPContext {

    private static final Logger log = LoggerFactory.getLogger(Kerb5Context.class);

    private static final ASN1ObjectIdentifier KRB5_MECH_OID;
    private static final ASN1ObjectIdentifier KRB5_MS_MECH_OID;
    static final ASN1ObjectIdentifier[] SUPPORTED_MECHS;
    private static final Oid JGSS_KRB5_NAME_OID;
    private static final Oid JGSS_KRB5_MECH_OID;

    static {

        // Default constructor
    }

    private final AtomicLong rdmaReads = new AtomicLong();
    private final AtomicLong rdmaWrites = new AtomicLong();
    private final AtomicLong rdmaSends = new AtomicLong();
    private final AtomicLong rdmaReceives = new AtomicLong();
    private final AtomicLong bytesTransferred = new AtomicLong();
    private final AtomicLong operationErrors = new AtomicLong();

     */
    private final byte[] fileId;

    /**
     * The type of handle (DURABLE_V1, DURABLE_V2, or PERSISTENT)
     */
    private final HandleType type;

    /**
     * The timeout in milliseconds for durable handles (not applicable for persistent handles)
     */
    private final long timeout;

    /**
     * The timestamp when this handle was created
     */
    private final long createTime;

class Trans2GetDfsReferralResponse extends SmbComTransactionResponse {

    class Referral {
        private int version;
        private int size;
        private int serverType;
        private int flags;
        private int proximity;
        private int pathOffset;
        private int altPathOffset;
        private int nodeOffset;
        private String altPath;

        int ttl;
        String path = null;
        String node = null;

    private static final int HASH_SIZE_SHA512 = 64; // SHA-512 produces 64-byte hashes

    // Session-specific preauth integrity contexts
    private final ConcurrentMap<String, PreauthIntegrityContext> sessionContexts = new ConcurrentHashMap<>();

    // Security configuration
    private final SecureRandom secureRandom;
    private final int selectedHashAlgorithm;
    private final boolean enforceIntegrity;

    /**

    private SecureKeyManager keyManager;
    private String sessionId;
    private volatile boolean closed = false;

    // Store session key and preauth hash for key rotation
    private byte[] sessionKey;
    private byte[] preauthIntegrityHash;
    private int rotationCount = 0;

    // Key rotation tracking - use atomic for lock-free operations
    private final AtomicLong bytesEncrypted = new AtomicLong(0);