command = SMB_COM_DELETE_DIRECTORY;
    }

    @Override
    int writeParameterWordsWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    int writeBytesWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

        dst[dstIndex] = (byte) 0x04;
        dstIndex++;
        dstIndex += writeString(path, dst, dstIndex);

        return dstIndex - start;

    }

    @Override
    protected int writeSetupWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeParametersWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeDataWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override

        m.flags = 0x05;
        m.alloc_hint = 0;
        NdrBuffer buf = new NdrBuffer(new byte[1024], 0);
        m.encode(buf);
        // decode back
        buf.setIndex(0);
        m.decode_header(buf);
        assertEquals(0, m.ptype);
    }

    @Test
    void testDecodeHeaderInvalidVersion() {
        NdrBuffer buf = new NdrBuffer(new byte[10], 0);
        buf.enc_ndr_small(4); // bad major
        buf.enc_ndr_small(0);

     *
     * Performance: O(1) operation using concurrent queue
     *
     * @return a byte buffer for SMB operations
     * @throws IllegalStateException if buffer size exceeds maximum allowed
     */
    static public byte[] getBuffer() {
        // Try to get from cache first - O(1) operation
        byte[] buf = bufferQueue.poll();
        if (buf != null) {
            queueSize.decrementAndGet();

        command = SMB_COM_NEGOTIATE;
        flags2 = DEFAULT_FLAGS2;
    }

    @Override
    int writeParameterWordsWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        byte[] dialects;
        try {
            dialects = DIALECTS.getBytes("ASCII");
        } catch (final UnsupportedEncodingException uee) {

        if (userFriendly.matches("(?i)(?:American|English|ASCII)")) {
          // 1-byte UTF-8 sequences - "American" ASCII text
          return 0x80;
        } else if (userFriendly.matches("(?i)(?:French|Latin|Western.*European)")) {
          // Mostly 1-byte UTF-8 sequences, mixed with occasional 2-byte
          // sequences - "Western European" text
          return 0x90;

    }

    @Override
    protected int writeParameterWordsWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int readParameterWordsWireFormat(final byte[] buffer, final int bufferIndex) {
        return 0;
    }

    @Override

    /**
     * Create SMB Direct Negotiate Request
     */
    public SmbDirectNegotiateRequest() {
    }

    /**
     * Encode to byte array
     *
     * @return encoded message
     */
    public byte[] encode() {
        byte[] data = new byte[32];

        int idx = 0;
        SMBUtil.writeInt2(minVersion, data, idx);
        idx += 2;
        SMBUtil.writeInt2(maxVersion, data, idx);

     * byte order: the highest order byte of the address is in getAddress()[0].
     *
     * @return a four byte array
     */

    public byte[] getAddress() {
        final byte[] addr = new byte[4];

        addr[0] = (byte) (address >>> 24 & 0xFF);
        addr[1] = (byte) (address >>> 16 & 0xFF);
        addr[2] = (byte) (address >>> 8 & 0xFF);

        this.flags2 = 0;
    }

    @Override
    protected int writeSetupWireFormat(final byte[] dst, int dstIndex) {
        dst[dstIndex] = getSubCommand();
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        return 2;
    }

    @Override
    protected int writeParametersWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;