// Verify notify flags
        assertEquals(Smb2ChangeNotifyRequest.SMB2_WATCH_TREE, SMBUtil.readInt2(buffer, offset + 2));

        // Verify output buffer length
        assertEquals(8192, SMBUtil.readInt4(buffer, offset + 4));

        // Verify file ID
        byte[] readFileId = new byte[16];
        System.arraycopy(buffer, offset + 8, readFileId, 0, 16);

        // Length = 5, Offset = 8
        ByteBuffer buffer = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN);
        buffer.putShort(0, (short) content.length); // Length
        buffer.putShort(2, (short) content.length); // MaxLength (not used by readSecurityBuffer, but typically same as length)
        buffer.putInt(4, 8); // Offset

     */
    public static final int SMB2_LOCKFLAG_FAIL_IMMEDIATELY = 0x10;

    private final long offset;
    private final long length;
    private final int flags;

    /**
     * Constructs an SMB2 lock element with the specified parameters.
     *
     * @param offset the byte offset in the file where the lock begins
     * @param length the number of bytes to lock

        this.readLength = readLength;
    }

    /**
     * Sets the file offset from which to start reading
     *
     * @param offset
     *            the offset to set
     */
    public void setOffset(final long offset) {
        this.offset = offset;
    }

    /**
     * Sets the minimum number of bytes that must be read for the operation to succeed
     *

    /**
     * Return the byte or character offset into the input source this location
     * is pointing to. If the input source is a file or a byte stream then
     * this is the byte offset into that stream, but if the input source is
     * a character media then the offset is the character offset.
     * Returns -1 if there is no offset available.
     * @return the current offset
     */
    int getCharacterOffset();

    /**

        }

        @Test
        @DisplayName("Should decode at non-zero offset")
        void testDecodeWithOffset() throws SMBProtocolDecodingException {
            int offset = 50;
            SMBUtil.writeInt2(1, buffer, offset);
            SMBUtil.writeInt2(EncryptionNegotiateContext.CIPHER_AES128_GCM, buffer, offset + 2);

            EncryptionNegotiateContext context = new EncryptionNegotiateContext();

        // Encode test data at offset
        int offset = bufferIndex;
        SMBUtil.writeInt4(idFileSystem, buffer, offset);
        offset += 4;
        SMBUtil.writeInt4(sectPerAlloc, buffer, offset);
        offset += 4;
        SMBUtil.writeInt4((int) alloc, buffer, offset);
        offset += 4;
        SMBUtil.writeInt4((int) free, buffer, offset);
        offset += 4;

        buffer[offset] = 0x01; // revision
        buffer[offset + 1] = 0x00; // padding
        SMBUtil.writeInt2(0x8004, buffer, offset + 2); // type
        SMBUtil.writeInt4(0, buffer, offset + 4); // owner offset
        SMBUtil.writeInt4(0, buffer, offset + 8); // group offset
        SMBUtil.writeInt4(0, buffer, offset + 12); // SACL offset
        SMBUtil.writeInt4(20, buffer, offset + 16); // DACL offset

            writeLittleEndianInt(baos, 8); // minimal size
            writeLittleEndianLong(baos, 72); // offset (aligned)

            // Buffer 2: SERVER_CHECKSUM
            writeLittleEndianInt(baos, PacConstants.SERVER_CHECKSUM);
            writeLittleEndianInt(baos, 20); // signature size
            writeLittleEndianLong(baos, 80); // offset (aligned)

            // Buffer 3: PRIVSVR_CHECKSUM

func (cr *s3UnsignedChunkedReader) Read(buf []byte) (n int, err error) {
	// First, if there is any unread data, copy it to the client
	// provided buffer.
	if cr.offset > 0 {
		n = copy(buf, cr.buffer[cr.offset:])
		if n == len(buf) {
			cr.offset += n
			return n, nil
		}
		cr.offset = 0
		buf = buf[n:]
	}
	// mustRead reads from input and compares against provided slice.
	mustRead := func(b ...byte) error {
		for _, want := range b {