RdmaMemoryRegion sendRegion = bufferManager.getSendRegion(requestBuffer.remaining());
        sendRegion.getBuffer().put(requestBuffer);
        sendRegion.getBuffer().flip();
        
        try {
            // Send via RDMA
            rdmaConnection.send(sendRegion.getBuffer(), sendRegion);
            rdmaConnection.consumeSendCredit();
            
            // Receive response

    public int getTailSpace() {
        return buf.length - index;
    }

    /**
     * Returns the underlying byte buffer.
     *
     * @return the byte buffer
     */
    public byte[] getBuffer() {
        return buf;
    }

    /**
     * Aligns the buffer index to the specified boundary with a fill value.
     *
     * @param boundary the alignment boundary

    public int getTailSpace() {
        return this.buf.length - this.index;
    }

    /**
     * Returns the underlying byte buffer.
     *
     * @return the byte buffer
     */
    public byte[] getBuffer() {
        return this.buf;
    }

    /**
     * Aligns the buffer index to the specified boundary with a fill value.
     *
     * @param boundary the alignment boundary

            // Test data preparation
            byte[] testData = "Test RDMA data transfer".getBytes();
            sendBuffer.getBuffer().put(testData);
            sendBuffer.getBuffer().flip();
            assertEquals(testData.length, sendBuffer.getBuffer().remaining(), "Buffer should contain test data");

            // Clean up
            bufferManager.releaseSendRegion(sendBuffer);

      OutputStream encodingStream = encoding.encoding.encodingStream(target);
      encodingStream.write(encodingInputs[i & INPUTS_MASK]);
      encodingStream.close();
      tmp += target.getBuffer().length();
    }
    return tmp;
  }

  @Benchmark
  public int decodingStream(int reps) throws IOException {
    int tmp = 0;
    byte[] target = new byte[n];
    for (int i = 0; i < reps; i++) {

        RdmaMemoryRegion region = provider.registerMemory(buffer, access);
        assertNotNull(region, "Memory region should not be null");
        assertEquals(buffer, region.getBuffer(), "Buffer should match");
        assertEquals(1024, region.getSize(), "Size should match buffer size");
        assertTrue(region.hasAccess(RdmaAccess.LOCAL_READ), "Should have local read access");

        if (minSize <= sendBufferSize) {
            RdmaMemoryRegion region = availableSendRegions.poll();
            if (region != null) {
                region.getBuffer().clear();
                return region;
            }
        }

        // Allocate new buffer
        ByteBuffer buffer = ByteBuffer.allocateDirect(Math.max(minSize, sendBufferSize));

      OutputStream encodingStream = encoding.encoding.encodingStream(target);
      encodingStream.write(encodingInputs[i & INPUTS_MASK]);
      encodingStream.close();
      tmp += target.getBuffer().length();
    }
    return tmp;
  }

  @Benchmark
  public int decodingStream(int reps) throws IOException {
    int tmp = 0;
    byte[] target = new byte[n];
    for (int i = 0; i < reps; i++) {

            alignmentBytes = 1; // Need 1 byte of padding for 2-byte alignment
        }

        // The value 0xCD should be encoded as a 16-bit value (0x00CD) in little-endian
        byte[] bufferData = buf.getBuffer();
        assertEquals((byte) 0xCD, bufferData[startIndex + alignmentBytes], "Least significant byte should be first");

        boolean isDirect;
        DcerpcException de;

        if (state == 0) {
            bind();
        }

        isDirect = true;

        stub = jcifs.smb1.smb1.BufferCache.getBuffer();
        try {
            int off, tot, n;

            buf = new NdrBuffer(stub, 0);

            msg.flags = DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG;
            msg.call_id = call_id++;