* [Okurl](https://github.com/yschimke/okurl/wiki) A curl-like client for social networks and other APIs.
 * [PersistentCookieJar](https://github.com/franmontiel/PersistentCookieJar): A persistent `CookieJar`.
 * ⬜️ [Picasso](https://github.com/square/picasso): A powerful image downloading and caching library for Android.
 * ⬜️ [Retrofit](https://github.com/square/retrofit): Type-safe HTTP client for Android and Java by Square.

            attemptCount.incrementAndGet();
            throw new RuntimeException("Persistent failure");
        });

        try {
            fesenClient.get(c -> mockFuture);
            fail("Expected exception after max retries");
        } catch (RuntimeException e) {
            assertEquals("Persistent failure", e.getMessage());
        }

        // Should try initial + maxRetryCount times (1 + 3 = 4)

     */
    boolean isUseDurableHandles();

    /**
     * Property {@code jcifs.smb.client.usePersistentHandles}, defaults to false
     *
     * @return whether to use persistent handles for maximum reliability
     */
    boolean isUsePersistentHandles();

    /**
     * Property {@code jcifs.smb.client.durableHandleTimeout}, defaults to 120000
     *

    }
    return builder.build()
  }

  fun close() {
    val okHttpClient = client as OkHttpClient
    okHttpClient.connectionPool.evictAll() // Close any persistent connections.
    okHttpClient.dispatcher.executorService.shutdownNow()
  }

  companion object {
    internal const val NAME = "okcurl"
    internal const val DEFAULT_TIMEOUT = -1

    }
  }

  /**
   * Returns a hash function implementing FarmHash's Fingerprint64, an open-source algorithm.
   *
   * <p>This is designed for generating persistent fingerprints of strings. It isn't
   * cryptographically secure, but it produces a high-quality hash with fewer collisions than some
   * alternatives we've used in the past.
   *

  }

  @Test
  fun cookie() {
    val cookie: Cookie = Cookie.Builder().build()
    val name: String = cookie.name
    val value: String = cookie.value
    val persistent: Boolean = cookie.persistent
    val expiresAt: Long = cookie.expiresAt
    val hostOnly: Boolean = cookie.hostOnly
    val domain: String = cookie.domain
    val path: String = cookie.path
    val httpOnly: Boolean = cookie.httpOnly

### Services

**UrlQueueService**: URL queue management (FIFO), duplicate detection via `visited()`
**DataService**: Access result persistence, iteration

**Implementations**:
- `UrlQueueServiceImpl`, `DataServiceImpl`: In-memory (default)
- `OpenSearchDataService`: OpenSearch backend (persistent)

### Processing Pipeline

```
CrawlerThread → Client → ResponseProcessor → Transformer → Extractor → ExtractData

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutionException;

/**
 * A semi-persistent mapping from keys to values. Values are automatically loaded by the cache, and
 * are stored in the cache until either evicted or manually invalidated. The common way to build
 * instances is using {@link CacheBuilder}.
 *

     */
    @Override
    protected FessUserBean createUserBean(final FessUser user) {
        return new FessUserBean(user);
    }

    /**
     * Gets the cookie remember-me key for persistent login.
     * Currently returns empty as remember-me functionality is not enabled.
     *
     * @return an optional thing containing the remember-me key, or empty if not configured
     */
    @Override

                                long timeout = config.getPersistentHandleTimeout();
                                boolean persistent =
                                        config.isUsePersistentHandles() && h.hasCapability(SmbConstants.CAP_PERSISTENT_HANDLES);
                                req.addDurableHandleV2Context(timeout, persistent);
                            }
                            persistentHandlesAdded = true;
                        }