final byte[] temp = new byte[28 + avPairsLength + 4];

        Encdec.enc_uint32le(0x00000101, temp, 0); // Header
        Encdec.enc_uint32le(0x00000000, temp, 4); // Reserved
        Encdec.enc_uint64le(nanos1601, temp, 8);
        System.arraycopy(clientChallenge, 0, temp, 16, 8);
        Encdec.enc_uint32le(0x00000000, temp, 24); // Unknown
        if (avPairs != null) {

        final byte[] temp = new byte[28 + targetInfoLength + 4];

        Encdec.enc_uint32le(0x00000101, temp, 0); // Header
        Encdec.enc_uint32le(0x00000000, temp, 4); // Reserved
        Encdec.enc_uint64le(nanos1601, temp, 8);
        System.arraycopy(clientChallenge, 0, temp, 16, 8);
        Encdec.enc_uint32le(0x00000000, temp, 24); // Unknown
        if (targetInfo != null) {

- Thread-local storage via `CrawlingParameterUtil`

**Resource Management**:
- `AutoCloseable` throughout
- `DeferredFileOutputStream` for large responses (temp files for >1MB)
- Connection pooling with limits
- Background temp file deletion via `FileUtil.deleteInBackground()`

**Fault Tolerance**:
- `FaultTolerantClient` wrapper (retry, circuit breaker)

    public void test_temp_file_creation() {
        // Test that temp file uses correct prefix "GcsClient" not "StorageClient"
        GcsClient client = new GcsClient() {
            @Override
            protected java.io.File createTempFile(String prefix, String suffix, java.io.File directory) {
                // Verify the prefix is correct

    private static final String FESS_PORT = "fess.port";

    /** System property key for Fess temporary directory path */
    private static final String FESS_TEMP_PATH = "fess.temp.path";

    /** System property key for Fess variable directory path */
    private static final String FESS_VAR_PATH = "fess.var.path";

    /** System property key for Fess web application path */

                return false;
            } finally {
                if (tempFile != null && !tempFile.delete()) {
                    logger.debug("Failed to delete temp file: {}", tempFile.getAbsolutePath());
                }
            }
        });

    }

    /**
     * Executes a command to generate a thumbnail using the specified command list.
     * <p>

        } catch (CrawlingAccessException e) {
            assertTrue(e.getCause() instanceof InterruptedException);
        }
    }

    public void test_temp_file_creation() {
        // Test that temp file uses correct prefix "S3Client" not "StorageClient"
        S3Client client = new S3Client() {
            @Override
            protected java.io.File createTempFile(String prefix, String suffix, java.io.File directory) {

    public void test_temp_file_creation() {
        // Test that temp file uses correct prefix "StorageClient" not "SmbClient"
        StorageClient client = new StorageClient() {
            @Override
            protected java.io.File createTempFile(String prefix, String suffix, java.io.File directory) {
                // Verify the prefix is correct

        assertTrue(robotsTxt.allows("/fishing", "EndPathBot"));
        assertTrue(robotsTxt.allows("/fish/", "EndPathBot"));

        // Disallow: /temp$ but Allow: /fishing
        assertFalse(robotsTxt.allows("/temp", "EndPathBot"));
        assertTrue(robotsTxt.allows("/temporary", "EndPathBot"));
        assertTrue(robotsTxt.allows("/fishing", "EndPathBot"));

    protected void deleteTempDir(final File ownTmpDir) {
        if (ownTmpDir == null) {
            return;
        }
        if (!FileUtils.deleteQuietly(ownTmpDir)) {
            logger.warn("Could not delete temp directory: path={}", ownTmpDir.getAbsolutePath());
        }
    }

    /**
     * Appends JAR files from the specified directory to the classpath buffer.
     *