}

    @Test
    public void test_getUserAgentType_FireFox() {
        getMockRequest().addHeader("user-agent", "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0");
        assertEquals(UserAgentType.FIREFOX, userAgentHelper.getUserAgentType());
    }

    @Test
    public void test_getUserAgentType_Safari() {
        getMockRequest().addHeader("user-agent",

Caching
=======

OkHttp implements an optional, off by default, Cache. OkHttp aims for RFC correct and
pragmatic caching behaviour, following common real-world browser like Firefox/Chrome and
server behaviour when ambiguous.

# Basic Usage

```kotlin
  private val client: OkHttpClient = OkHttpClient.Builder()
      .cache(Cache(
          directory = File(application.cacheDir, "http_cache"),
          // $0.05 worth of phone storage in 2020

 * Simplified from
 * https://hc.apache.org/httpcomponents-client-5.0.x/httpclient5/examples/AsyncClientTlsAlpn.java
 *
 * Mainly intended to verify behaviour of popular clients across Android versions, similar
 * to observing Firefox or Chrome browser behaviour.
 */
@Ignore("Failing with Netty errors")
class ApacheHttpClientHttp2Test {
  @Test
  fun testHttp2() {
    val client = HttpAsyncClients.createHttp2Default()

                        result.acceptedApiChanges.push(correction);
                    });
                    // Sort the array in place by type, then member
                    // Note that Firefox is fine with a sort function returning any positive or negative number, but Chrome
                    // requires 1 or -1 specifically and ignores higher or lower values.  This sort ought to remain consistent

        return if (delta > 0L) delta else 0L
      }

      if (lastModified != null && cacheResponse.request.url.query == null) {
        // As recommended by the HTTP RFC and implemented in Firefox, the max age of a document
        // should be defaulted to 10% of the document's age at the time it was served. Default
        // expiration dates aren't used for URIs containing a query.

      return Integer.valueOf(header)
    }
    return Integer.MAX_VALUE
  }

  companion object {
    /**
     * How many redirects and auth challenges should we attempt? Chrome follows 21 redirects; Firefox,
     * curl, and wget follow 20; Safari follows 16; and HTTP/1.0 recommends 5.
     */
    private const val MAX_FOLLOW_UPS = 20
  }

 * called certificate authorities (CAs).
 *
 * Browsers and other HTTP clients need a set of trusted root certificates to authenticate their
 * peers. Sets of root certificates are managed by either the HTTP client (like Firefox), or the
 * host platform (like Android). In July 2018 Android had 134 trusted root certificates for its HTTP
 * clients to trust.
 *
 * For example, in order to establish a secure connection to `https://www.squareup.com/`,

### The abbr gives a full phrase and an explanation { #the-abbr-gives-a-full-phrase-and-an-explanation }

* <abbr title="Mozilla Developer Network: documentation for developers, written by the Firefox people">MDN</abbr>
* <abbr title="Input/Output: disk reading or writing, network communications.">I/O</abbr>.

////

//// tab | Info

And, for example, you will probably see that there are multiple processes running the same browser program (Firefox, Chrome, Edge, etc). They normally run one process per tab, plus some other extra processes.

<img class="shadow" src="/img/deployment/concepts/image01.png">

---

  /**
   * The HTTP nonstandard {@code X-Content-Security-Policy} header field name. It was introduced in
   * <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1</a> and used by the Firefox until
   * version 23 and the Internet Explorer version 10. Please, use {@link #CONTENT_SECURITY_POLICY}
   * to pass the CSP.
   *
   * @since 20.0
   */