If you're in a tricky situation and prepared to deal with the consequences, rewriting response headers is a powerful way to work around problems. For example, you can fix a server's misconfigured `Cache-Control` response header to enable better response caching:

```java
/** Dangerous interceptor that rewrites the server's cache-control header. */
private static final Interceptor REWRITE_CACHE_CONTROL_INTERCEPTOR = new Interceptor() {

            }
        }

        if (usage == 0) {
            synchronized (this) {
                log.debug("Usage dropped to zero, release session");
                if (this.sessionAcquired.compareAndSet(true, false)) {
                    this.session.release();
                }
            }
        } else if (usage < 0) {
            log.error("Usage count dropped below zero " + this);

      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the

      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the

        }
        return null;
    }

    /**
     * Stores the document IDs associated with a search query for tracking purposes.
     * This method caches the document IDs returned for a specific query to enable click tracking and analytics.
     *
     * @param queryId the unique identifier for the search query
     * @param documentItems the list of document maps containing search results
     */

  using ethtool to disable checksum offload on your primary network interface, you should
  now be able to stop doing that. ([#92035](https://github.com/kubernetes/kubernetes/pull/92035), [@danwinship](https://github.com/danwinship)) [SIG Network and Node]

     * @throws IOException
     */
    @Test
    void testGetOutputStreamCachesData() throws IOException {
        // Arrange
        // Enable output mode
        when(mockConnection.getDoOutput()).thenReturn(true);
        ntlmConnection.setDoOutput(true);

        // Mock initial connection's output stream (needed for CacheStream)

Further examples are on the [OkHttp Recipes page][recipes].


Requirements
------------

OkHttp works on Android 5.0+ (API level 21+) and Java 8+.

On Android, OkHttp uses [AndroidX Startup][androidx_startup]. If you disable the initializer in the manifest,
then apps are responsible for calling `OkHttp.initialize(applicationContext)` in `Application.onCreate`.

    platform.assumeNotAndroid()

    // Accessing an URL protocol that was not enabled. The URL protocol mailto is not tested and
    // might not work as expected. It can be enabled by adding the --enable-url-protocols=mailto
    // option to the native-image command.
    platform.assumeNotGraalVMImage()
    val javaNetUrl = URL("mailto:******@****.***")
    assertThat(javaNetUrl.toHttpUrlOrNull()).isNull()
  }

    private static final Pattern EMAIL_ADDRESS_PATTERN =
            Pattern.compile("[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}", Pattern.CASE_INSENSITIVE);

    /**
     * Cache for storing resource file modification timestamps to enable cache busting.
     * The cache expires after 10 minutes and has a maximum size of 1000 entries.
     */
    private static LoadingCache<String, Long> resourceHashCache =