}

    @Override
    public byte[] compress(byte[] data, int offset, int length, int algorithm) throws CIFSException {
        if (data == null) {
            throw new CIFSException("Data cannot be null");
        }
        if (offset < 0 || length < 0 || offset + length > data.length) {
            throw new CIFSException("Invalid offset or length");
        }
        if (!isAlgorithmSupported(algorithm)) {

            SMBUtil.writeInt4(0, buffer, offset + 4); // sin6_flowinfo
            System.arraycopy(address.getAddress(), 0, buffer, offset + 8, 16); // sin6_addr
            SMBUtil.writeInt4(0, buffer, offset + 24); // sin6_scope_id
        } else {
            // IPv4 sockaddr_in structure (Windows AF_INET = 2)
            SMBUtil.writeInt2(2, buffer, offset); // sa_family: AF_INET

        final int offset = readULong(src, index + 4);
        final byte[] buffer = new byte[length];
        System.arraycopy(src, offset, buffer, 0, length);
        return buffer;
    }

    static void writeULong(final byte[] dest, final int offset, final int ulong) {
        dest[offset] = (byte) (ulong & 0xff);
        dest[offset + 1] = (byte) (ulong >> 8 & 0xff);

        byte[] dst = new byte[100];

        int bytesWritten = notifyChange.writeSetupWireFormat(dst, 10);

        // Verify structure:
        // Offset 0-3: Completion Filter (4 bytes)
        // Offset 4-5: FID (2 bytes)
        // Offset 6: Watch Tree (1 byte)
        // Offset 7: Reserved (1 byte)
        assertEquals(8, bytesWritten);

        // Check completion filter

            largeData[i] = (byte) i;
        }

        // Test with different offsets
        int[] offsets = { 0, 10, 50, 90 };

        for (int offset : offsets) {
            // Act
            signingDigest.sign(largeData, offset, 10, request, response);

            // Assert
            verify(signingDigest).sign(largeData, offset, 10, request, response);
        }

	for _, block := range enBlocks[:dataBlocks] {
		// Skip blocks until we have reached our offset.
		if offset >= int64(len(block)) {
			// Decrement offset.
			offset -= int64(len(block))
			continue
		}

		// Skip until offset.
		block = block[offset:]

		// Reset the offset for next iteration to read everything
		// from subsequent blocks.
		offset = 0

		// We have written all the blocks, write the last remaining block.

        assertArrayEquals(testKey.getKey(), encodedKey);

        // Verify lease state at offset 40 (24 + 16 for key)
        assertEquals(testState, SMBUtil.readInt4(buffer, 40));

        // Verify lease flags at offset 44 (40 + 4 for state)
        assertEquals(0, SMBUtil.readInt4(buffer, 44));

        // Verify lease duration at offset 48 (44 + 4 for flags) - should be 0 (reserved)
        assertEquals(0, SMBUtil.readInt8(buffer, 48));

        byte[] buffer = new byte[512];
        int offset = 0;

        // Write setup
        offset += trans2QueryFSInfo.writeSetupWireFormat(buffer, offset);
        assertEquals(2, offset);

        // Write parameters
        offset += trans2QueryFSInfo.writeParametersWireFormat(buffer, offset);
        assertEquals(4, offset);

        // Write data
        offset += trans2QueryFSInfo.writeDataWireFormat(buffer, offset);

        int offset = 0;
        if (domainLength > 0) {
            writeUShort(targetInfo, offset, 2);
            offset += 2;
            writeUShort(targetInfo, offset, domainLength);
            offset += 2;
            System.arraycopy(domain, 0, targetInfo, offset, domainLength);
            offset += domainLength;
        }
        if (serverLength > 0) {

   * @param offset the first argument to {@link ByteSource#slice}
   * @param length the second argument to {@link ByteSource#slice}
   * @param expectRead the number of bytes we expect to read
   */
  private static void assertCorrectSlice(int input, int offset, long length, int expectRead)
      throws IOException {
    checkArgument(expectRead == (int) max(0, min(input, offset + length) - offset));