super(domain != null ? domain : tc.getConfig().getDefaultDomain(),
                username != null ? username : tc.getConfig().getDefaultUsername() != null ? tc.getConfig().getDefaultUsername() : "GUEST",
                password != null ? password : tc.getConfig().getDefaultPassword() != null ? tc.getConfig().getDefaultPassword() : "",

     * environment.
     *
     * @param tc
     *            context to use
     */
    public Type3Message(final CIFSContext tc) {
        setFlags(getDefaultFlags(tc));
        setDomain(tc.getConfig().getDefaultDomain());
        setUser(tc.getConfig().getDefaultUsername());
        setWorkstation(tc.getNameServiceClient().getLocalHost().getHostName());
    }

    /**

     *
     * @param tc
     *            the CIFS context for this handle
     */
    public DcerpcHandle(final CIFSContext tc) {
        this.transportContext = tc;
        this.binding = null;
    }

    /**
     * Constructs a DcerpcHandle with the specified CIFS context and binding
     *
     * @param tc
     *            the CIFS context for this handle

     * environment.
     *
     * @param tc
     *            context to use
     */
    public Type2Message(final CIFSContext tc) {
        this(tc, getDefaultFlags(tc), null, null);
    }

    /**
     * Creates a Type-2 message in response to the given Type-1 message
     * using default values from the current environment.
     *
     * @param tc
     *            context to use
     * @param type1

     *
     * @param host the hostname to resolve
     * @param tc the CIFS context
     * @return resolved name, null if not found
     */
    public synchronized NbtAddress getByName(final String host, final CIFSContext tc) {
        return getByName(new Name(tc.getConfig(), host, 0x20, null), tc);
    }

    synchronized NbtAddress getByName(final Name name, final CIFSContext tc) {
        NbtAddress result = null;

        try {

     * environment.
     *
     * @param tc
     *            context to use
     */
    public Type1Message(final CIFSContext tc) {
        this(tc, getDefaultFlags(tc), tc.getConfig().getDefaultDomain(), tc.getNameServiceClient().getLocalHost().getHostName());
    }

    /**
     * Creates a Type-1 message with the specified parameters.
     *
     * @param tc
     *            context to use
     * @param flags

    /**
     * Get transport connection
     *
     * @param tc
     *            context to use
     * @param address the server address
     * @param port the port number
     * @param exclusive
     *            whether to acquire an unshared connection
     * @return a transport connection to the target
     */
    SmbTransport getSmbTransport(CIFSContext tc, Address address, int port, boolean exclusive);

    /**

            log.debug("Ignoring invalid initial token", e1);
        }

        return new SpnegoContext(tc.getConfig(), setupTargetName(tc, host, new NtlmContext(tc, this, doSigning)));
    }

    private static SSPContext setupTargetName(CIFSContext tc, String host, NtlmContext ntlmContext) {
        if (host != null && tc.getConfig().isSendNTLMTargetName()) {
            ntlmContext.setTargetName(String.format("cifs/%s", host));
        }

    public boolean isGroupAddress(final CIFSContext tc) throws UnknownHostException {
        checkData(tc);
        return this.groupName;
    }

    @Override
    public int getNodeType(final CIFSContext tc) throws UnknownHostException {
        checkData(tc);
        return this.nodeType;
    }

    @Override
    public boolean isBeingDeleted(final CIFSContext tc) throws UnknownHostException {

     *
     * @param tc the CIFS context containing configuration
     */
    public NameServiceClientImpl(final CIFSContext tc) {
        this(tc.getConfig().getNetbiosLocalPort(), tc.getConfig().getNetbiosLocalAddress(), tc);
    }

    NameServiceClientImpl(final int lport, final InetAddress laddr, final CIFSContext tc) {
        this.lport = lport;
        this.laddr = laddr;