*/
    public UniAddress dc;

    NtlmChallenge(final byte[] challenge, final UniAddress dc) {
        this.challenge = challenge;
        this.dc = dc;
    }

    @Override
    public String toString() {
        return "NtlmChallenge[challenge=0x" + Hexdump.toHexString(challenge, 0, challenge.length * 2) + ",dc=" + dc.toString() + "]";
    }

    /**
     * Server address
     */
    public UniAddress dc;

    /**
     * Creates a new NTLM challenge with the specified parameters.
     * @param challenge the NTLM challenge bytes
     * @param dc the domain controller address
     */
    public NtlmChallenge(final byte[] challenge, final UniAddress dc) {
        this.challenge = challenge;
        this.dc = dc;
    }

    @Override
    public String toString() {

            UniAddress dc = mock(UniAddress.class);

            NtlmChallenge nc = new NtlmChallenge(challenge, dc);

            assertSame(challenge, nc.challenge);
            assertSame(dc, nc.dc);
        }

        @Test
        @DisplayName("Constructor accepts null challenge")
        void testConstructorAcceptsNullChallenge() {
            UniAddress dc = mock(UniAddress.class);

        UniAddress dc;
        final boolean offerBasic = enableBasic && (insecureBasic || request.isSecure());
        final String msg = request.getHeader("Authorization");
        if (msg != null && (msg.startsWith("NTLM ") || offerBasic && msg.startsWith("Basic "))) {
            if (loadBalance) {
                dc = new UniAddress(NbtAddress.getByName(domainController, 0x1C, null));

     *             use actual Active Directory authentication instead
     */
    @Deprecated
    void logon(CIFSContext tc, Address dc, int port) throws CIFSException;

    /**
     * Get NTLM challenge from a server
     *
     * @param dc the domain controller address
     * @param tc the CIFS context containing credentials
     * @return NTLM challenge

        Address dc;
        final boolean offerBasic = this.enableBasic && (this.insecureBasic || request.isSecure());
        final String msg = request.getHeader("Authorization");
        if (msg != null && (msg.startsWith("NTLM ") || offerBasic && msg.startsWith("Basic "))) {
            if (this.loadBalance) {

        assertNull(dfsImpl.getDc(mockContext, "anydomain.com"));
    }

    @Test
    void testGetDc_ConnectionFails() throws SmbAuthException {
        // Scenario: Transport connection fails when getting DC
        when(mockCredentials.getUserDomain()).thenReturn("authdomain.com");
        // When transport fails to connect, getDc returns null
        assertNull(dfsImpl.getDc(mockContext, "anydomain.com"));
    }

     * UnknownHostException uhe = null;
     *
     * try {
     * context = new InitialDirContext();
     * for ( ;; ) {
     * try {
     * Attributes attributes = context.getAttributes(
     * "dns:/_ldap._tcp.dc._msdcs." + name,
     * new String[] { "SRV" }
     * );
     * return name;
     * } catch (NameNotFoundException nnfe) {
     * uhe = new UnknownHostException(nnfe.getMessage());
     * }