dstIndex += 16;

        // Original message size
        SMBUtil.writeInt4(this.originalMessageSize, dst, dstIndex);
        dstIndex += 4;

        // Reserved (2 bytes)
        SMBUtil.writeInt2(0, dst, dstIndex);
        dstIndex += 2;

        // Flags (2 bytes)
        SMBUtil.writeInt2(this.flags, dst, dstIndex);
        dstIndex += 2;

            (byte) 64, (byte) 0x00, // StructureSize (LE)
            (byte) 0x00, (byte) 0x00, // CreditCharge (reserved 2.0.2)
            (byte) 0x00, (byte) 0x00, // ChannelSequence
            (byte) 0x00, (byte) 0x00, // Reserved
            (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // Status
            (byte) 0x00, (byte) 0x00, // Command

    @Test
    void testReadParameterWordsWireFormat_bufDataStartIsZero() {
        // Test case when bufDataStart is initially 0.
        byte[] buffer = new byte[37]; // 3 reserved + 8*4 bytes for int4 values + 2 bytes for setupCount
        int bufferIndex = 0;

        // Reserved bytes
        buffer[bufferIndex++] = 0x00;
        buffer[bufferIndex++] = 0x00;
        buffer[bufferIndex++] = 0x00;

        // totalParameterCount = 10

            assertTrue(ctx.isSupported(mech1), "mech1 supported");
            assertTrue(ctx.isPreferredMech(mech1), "first supported is preferred");
            assertArrayEquals(new ASN1ObjectIdentifier[] { mech1, mech2 }, ctx.getSupportedMechs(), "supported mechs");

            // MIC roundtrip: calculate then verify

        @BeforeEach
        public void setUp() {
            // Build a sample buffer
            int bufferIndex = 0;
            bufferIndex += 2; // reserved
            writeInt2(dataCompactionMode, buffer, bufferIndex);
            bufferIndex += 2;
            bufferIndex += 2; // reserved
            writeInt2(dataLength, buffer, bufferIndex);
            bufferIndex += 2;
            writeInt2(dataOffset, buffer, bufferIndex);
        }

     */
    boolean isSupported(ASN1ObjectIdentifier mechanism);

    /**
     * Checks whether the specified mechanism is the preferred mechanism.
     * @param selectedMech the selected mechanism OID
     * @return whether the specified mechanism is preferred
     */
    boolean isPreferredMech(ASN1ObjectIdentifier selectedMech);

    /**
     * Gets the negotiated context flags.
     * @return context flags

        lenient().when(SmbTransport.getSmbTransport(uniAddress, 0)).thenReturn(smbTransport);

        DfsReferral referral = new DfsReferral();
        referral.server = "dc1.domain.com";
        referral.next = referral;
        lenient().when(smbTransport.getDfsReferrals(auth, "\\domain.com", 1)).thenReturn(referral);

        UniAddress dcAddress = mock(UniAddress.class);

            _dst.enc_ndr_short(length);
            _dst.enc_ndr_short(maximum_length);
            _dst.enc_ndr_referent(buffer, 1);

            if (buffer != null) {
                _dst = _dst.deferred;
                final int _bufferl = length / 2;
                final int _buffers = maximum_length / 2;
                _dst.enc_ndr_long(_buffers);
                _dst.enc_ndr_long(0);

        assertEquals(16, SMBUtil.readInt2(buffer, 4));

        // NameLength field (2 bytes) - should be 4 for "RqLs"
        assertEquals(4, SMBUtil.readInt2(buffer, 6));

        // Reserved field (2 bytes) - should be 0
        assertEquals(0, SMBUtil.readInt2(buffer, 8));

        // DataOffset field (2 bytes) - should be 24 (16 header + 4 name + 4 padding)

    }

    @Test
    @DisplayName("Test DFS referral data")
    void testDfsReferralData() throws Exception {
        String url = "smb://server/share/path/";
        DummySmbResourceLocator loc = new DummySmbResourceLocator(url);

        // Initially no DFS referral
        assertNull(loc.getDfsReferral());

        // Set and retrieve DFS referral
        loc.setDfsReferral(dfs);