}

    @Test
    @DisplayName("isDisconnected / isFailed reflect socket and state")
    void connectionStateChecks() throws Exception {
        // Arrange: simulate connected state and open socket
        setField(transport, "state", 3); // connected
        Socket s = mock(Socket.class);
        when(s.isClosed()).thenReturn(false);
        setField(transport, "socket", s);

        // Act & Assert

        // acquire is called once in ctor + once per getTree() call
        verify(tree, times(3)).acquire();
    }

    @Test
    @DisplayName("isValid() true when open, same tree id, connected")
    void isValid_true_whenOpenSameTreeConnected() {
        when(cfg.isTraceResourceUsage()).thenReturn(false);
        stubValidTree(99L, true, true);

errors.design_editor_disabled = This feature is disabled.
errors.not_found_on_file_system = Not found. Cause: {0}
errors.could_not_open_on_system = Could not open {0}.<br>Please check if the file is associated with an application.
errors.result_size_exceeded = No more results can be displayed.
errors.target_file_does_not_exist = The file {0} does not exist.

errors.design_editor_disabled = This feature is disabled.
errors.not_found_on_file_system = Not found. Cause: {0}
errors.could_not_open_on_system = Could not open {0}.<br>Please check if the file is associated with an application.
errors.result_size_exceeded = No more results can be displayed.
errors.target_file_does_not_exist = The file {0} does not exist.

2. **Create** a feature branch (`git checkout -b feature/amazing-feature`)
3. **Commit** your changes (`git commit -m 'Add amazing feature'`)
4. **Push** to the branch (`git push origin feature/amazing-feature`)
5. **Open** a Pull Request

### Development Setup

```bash
# Clone the repository
git clone https://github.com/codelibs/fess-crawler.git
cd fess-crawler

# Build the project
mvn clean install

        assertEquals(Smb2CreateRequest.FILE_SHARE_READ | Smb2CreateRequest.FILE_SHARE_WRITE, shareAccess);

        // Check default create disposition (OPEN) at offset 36
        int createDisposition =
                (buffer[36] & 0xFF) | ((buffer[37] & 0xFF) << 8) | ((buffer[38] & 0xFF) << 16) | ((buffer[39] & 0xFF) << 24);

    public static final byte SMB_COM_MOVE = (byte) 0x2A;

    /**
     * SMB command for echo/ping operations.
     */
    public static final byte SMB_COM_ECHO = (byte) 0x2B;

    /**
     * SMB command to open a file with extended attributes.
     */
    public static final byte SMB_COM_OPEN_ANDX = (byte) 0x2D;

    /**
     * SMB command to read from a file with extended attributes.
     */

    private static final String META_NAME_THUMBNAIL_CONTENT = "//META[@name=\"thumbnail\" or @name=\"THUMBNAIL\"]/@content";

    /** XPath expression for extracting Open Graph image content from meta tags */
    private static final String META_PROPERTY_OGIMAGE_CONTENT = "//META[@property=\"og:image\"]/@content";

    /** XPath expression for extracting robots content from meta tags */

            }
            this.names.decode(_src);
            this.count = _src.dec_ndr_long();
            this.retval = _src.dec_ndr_long();
        }
    }

    /**
     * LSA open policy version 2 message.
     */
    public static class LsarOpenPolicy2 extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x2c;
        }

    /** SMB2 tree connect command */
    protected static final short SMB2_TREE_CONNECT = 0x0003;
    /** SMB2 tree disconnect command */
    protected static final short SMB2_TREE_DISCONNECT = 0x0004;
    /** SMB2 create/open file command */
    protected static final short SMB2_CREATE = 0x0005;
    /** SMB2 close file command */
    protected static final short SMB2_CLOSE = 0x0006;
    /** SMB2 flush file command */