private CIFSContext transportContext;

    private CredentialsInternal credentials;
    private byte[] sessionKey;
    private boolean extendedSecurity;

    private final AtomicLong usageCount = new AtomicLong(1);
    private final AtomicBoolean transportAcquired = new AtomicBoolean(true);

    private long sessionId;

    private SMBSigningDigest digest;

    private final String targetDomain;

    private boolean smb2 = false;
    private InetAddress localAddr;
    private int localPort;
    private Address address;
    private Socket socket;
    private int port;
    private final AtomicLong mid = new AtomicLong();
    private OutputStream out;
    private InputStream in;
    private final byte[] sbuf = new byte[1024]; /* small local buffer */
    private long sessionExpiration;