- [Changelog since v1.21.4](#changelog-since-v1214)
  - [Important Security Information](#important-security-information)
    - [CVE-2021-25741: Symlink Exchange Can Allow Host Filesystem Access](#cve-2021-25741-symlink-exchange-can-allow-host-filesystem-access)
  - [Changes by Kind](#changes-by-kind-8)
    - [Feature](#feature-6)
    - [Bug or Regression](#bug-or-regression-8)

### Connection Pool Tuning

```java
container.singleton("httpClient", HcHttpClient.class, client -> {
    client.setMaxConnections(200);          // Total connections
    client.setMaxConnectionsPerRoute(20);   // Per-host connections
    client.setConnectionTimeout(30000);     // Connection timeout
    client.setSocketTimeout(60000);         // Read timeout
});
```

### Memory Management

```java

                        host:
                          type: string
                          format: hostname
                          example: "fess.codelibs.org"
                        last_modified:
                          type: string

*   Fixed bad conversion in host port chain name generating func which led to some unreachable host ports. ([#55153](https://github.com/kubernetes/kubernetes/pull/55153),[ @chenchun](https://github.com/chenchun))

    public static final String LABELS_duplicate_name = "{labels.duplicate_name}";

    /** The key of the message: Duplicate Host */
    public static final String LABELS_duplicate_host_configuration = "{labels.duplicate_host_configuration}";

    /** The key of the message: Duplicate Host */
    public static final String LABELS_duplicate_host_title_details = "{labels.duplicate_host_title_details}";

                    }
                });
            } catch (final Exception e) {
                logger.warn("Failed to access log files.", e);
            }
        }
    }

    /**
     * Gets host information including hostname and IP address.
     *
     * @return formatted string containing hostname and IP address
     */
    protected String getHostInfo() {
        final StringBuilder buf = new StringBuilder();

    reading the public suffix database would cause subsequent reads to hang when they should have
    crashed.

 *  Fix: Avoid `InetAddress.getCanonicalHostName()` in MockWebServer. This avoids problems if the
    host machine's IP address has additional DNS registrations.

 *  New: Create a JPMS-compatible artifact for `JavaNetCookieJar`. Previously, multiple OkHttp

	public static final fun get (Ljava/net/URI;)Lokhttp3/HttpUrl;
	public static final fun get (Ljava/net/URL;)Lokhttp3/HttpUrl;
	public fun hashCode ()I
	public final fun host ()Ljava/lang/String;
	public final fun isHttps ()Z
	public final fun newBuilder ()Lokhttp3/HttpUrl$Builder;
	public final fun newBuilder (Ljava/lang/String;)Lokhttp3/HttpUrl$Builder;

 *
 * Warning: Do not use this if there is a chance that you might have multiple connections (even plain
 * HttpURLConnections, for the complete JRE) to the same host with different or mixed anonymous/authenticated
 * credentials. Authenticated connections can/will be reused.
 *
 * @deprecated This is broken by design, even a possible vulnerability. Deprecation is conditional on whether future JDK

        assertThrows(IllegalStateException.class, () -> {
            // This would normally be called during authentication
            auth.createContext(null, null, "host", null, false);
        });
    }

    /**
     * Test TTL with different constructor types
     */
    @Test
    @DisplayName("Test TTL functionality works with all constructor types")