ByteBuffer bb = ByteBuffer.wrap(buffer, offset, 24).order(ByteOrder.LITTLE_ENDIAN);
            bb.putLong(5000L);
            bb.putLong(2500L);
            bb.putInt(16);
            bb.putInt(1024);

            // When
            int bytesConsumed = fileFsSizeInfo.decode(buffer, offset, 24);

            // Then
            assertEquals(24, bytesConsumed);

        SMBUtil.writeInt2(testDialect, buffer, bufferIndex + 22);

        // Execute decode
        int bytesDecoded = response.decode(buffer, bufferIndex, 24);

        // Verify results
        assertEquals(24, bytesDecoded, "Should decode exactly 24 bytes");
        assertEquals(testCapabilities, response.getCapabilities(), "Capabilities should match");

                securityProvider.wrap(buf);
            }

            tot = buf.getLength() - 24;
            off = 0;

            while (off < tot) {
                n = tot - off;

                if (24 + n > max_xmit) {
                    msg.flags &= ~DCERPC_LAST_FRAG;
                    n = max_xmit - 24;
                } else {
                    msg.flags |= DCERPC_LAST_FRAG;

     */
    @Override
    public int encode(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

        System.arraycopy(this.sourceKey, 0, dst, dstIndex, 24);
        dstIndex += 24;

        SMBUtil.writeInt4(this.chunks.length, dst, dstIndex);
        dstIndex += 4;

        dstIndex += 4; // Reserved

        for (final SrvCopychunk chk : this.chunks) {

        int written = request.writeBytesWireFormat(buffer, offset);

        // Verify bytes written
        assertEquals(24, written);

        // Verify structure size (should be 24)
        assertEquals(24, SMBUtil.readInt2(buffer, offset));

        // Verify close flags (2 bytes at offset+2, should be 0 by default)
        assertEquals(0, SMBUtil.readInt2(buffer, offset + 2));

            byte[] buffer = new byte[100];
            when(mockFileSystemInfo.decode(any(byte[].class), anyInt(), anyInt())).thenReturn(24);

            int result = mockFileSystemInfo.decode(buffer, 0, 100);

            assertEquals(24, result);
            verify(mockFileSystemInfo, times(1)).decode(buffer, 0, 100);
        }

        @Test
        @DisplayName("Should handle decode exception")

        int written = request.writeBytesWireFormat(buffer, offset);

        // Verify bytes written
        assertEquals(24, written);

        // Verify structure size (should be 24)
        assertEquals(24, SMBUtil.readInt2(buffer, offset));

        // Verify Reserved1 (2 bytes at offset+2, should be 0)
        assertEquals(0, SMBUtil.readInt2(buffer, offset + 2));

            fval |= SP3[work >>> 16 & 0x0000003f];
            fval |= SP1[work >>> 24 & 0x0000003f];
            work = right ^ keys[keysi++];
            fval |= SP8[work & 0x0000003f];
            fval |= SP6[work >>> 8 & 0x0000003f];
            fval |= SP4[work >>> 16 & 0x0000003f];
            fval |= SP2[work >>> 24 & 0x0000003f];
            leftt ^= fval;
            work = leftt << 28 | leftt >>> 4;

        assertEquals(Smb2CreateRequest.SMB2_IMPERSONATION_LEVEL_IMPERSONATION, impLevel);

        // Check default desired access (0x00120089) at offset 24
        int desiredAccess = (buffer[24] & 0xFF) | ((buffer[25] & 0xFF) << 8) | ((buffer[26] & 0xFF) << 16) | ((buffer[27] & 0xFF) << 24);
        assertEquals(0x00120089, desiredAccess);

        // Assert
        assertEquals(24, resp.length, "LMv2 response length must be 24");
        assertArrayEquals(clientChallenge, Arrays.copyOfRange(resp, 16, 24), "Client challenge must be copied to last 8 bytes");
        assertFalse(Arrays.equals(new byte[24], resp), "Response must not be all zeros");
    }

    @Test