// sge.setLength(data.remaining());
            // sge.setLkey(disniRegion.getLocalKey());
            // sgeList.add(sge);
            //
            // sendWR.setSg_list(sgeList);
            // endpoint.postSend(Arrays.asList(sendWR)).execute().free();

            log.debug("DiSNI RDMA send completed, {} bytes", data.remaining());

        } catch (Exception e) {

        }

        try {
            // For TCP fallback, simulate reading data through the TCP socket
            int bytesToRead = Math.min(length, buffer.remaining());
            ByteBuffer tempBuffer = ByteBuffer.allocate(bytesToRead);

            int totalRead = 0;
            while (tempBuffer.hasRemaining() && totalRead < bytesToRead) {

                        request.setOffset(type == SmbConstants.TYPE_NAMED_PIPE ? 0 : this.fp);
                        request.setReadLength(r);

                        // Optimization: Set remaining bytes hint for server read-ahead
                        request.setRemainingBytes(Math.min(len - r, 1024 * 1024)); // Hint up to 1MB for read-ahead

                        try {

        this.data = data;
        this.dataOffset = offset;
        this.dataLength = length;
    }

    /**
     * Sets the number of bytes remaining to be written in a sequence of write operations.
     *
     * @param remainingBytes the remainingBytes to set
     */
    public void setRemainingBytes(final int remainingBytes) {

     *            the minimumCount to set
     */
    public void setMinimumCount(final int minimumCount) {
        this.minimumCount = minimumCount;
    }

    /**
     * Sets the number of bytes remaining to be read after this request
     *
     * @param remainingBytes
     *            the remainingBytes to set
     */
    public void setRemainingBytes(final int remainingBytes) {

        //     throw new RuntimeException("Failed to register memory region", e);
        // }

        this.memoryRegister = new Object(); // Placeholder

        log.debug("DiSNI memory region registered, size: {}", buffer.remaining());
    }

    @Override
    public void invalidate() {
        if (valid && memoryRegister != null) {
            try {
                // In real implementation, this would deregister the memory:

        }

        // Skip padding
        bufferIndex += 2;

        // Read flags
        this.flags = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // Validate remaining buffer size for algorithms
        if (len < 8 + (compressionCount * 2)) {
            throw new SMBProtocolDecodingException("Buffer too small for compression algorithms");
        }

        assertTrue(mockService.unregisterWitness(reg2));
        assertEquals(2, mockService.getRegistrationCount());
        assertFalse(mockService.hasRegistration(reg2));

        // Clean up remaining
        assertTrue(mockService.unregisterWitness(reg1));
        assertTrue(mockService.unregisterWitness(reg3));
        assertEquals(0, mockService.getRegistrationCount());
    }

    @Test

    void testInitialDataLength() {
        // Then
        assertEquals(0, response.getDataLength());
    }

    @Test
    @DisplayName("Should initially have zero data remaining")
    void testInitialDataRemaining() {
        // Then
        assertEquals(0, response.getDataRemaining());
    }

    @Test
    @DisplayName("Should write empty bytes to wire format")

            SMBUtil.writeInt2(445, buffer, offset + 2); // sin_port
            System.arraycopy(address.getAddress(), 0, buffer, offset + 4, 4); // sin_addr
            // Remaining bytes stay zero-filled
        }
    }

    private static InetAddress parseSockaddr(byte[] data, int offset) {
        try {
            int family = SMBUtil.readInt2(data, offset);