"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.52 Safari/537.36");
        assertEquals(UserAgentType.CHROME, userAgentHelper.getUserAgentType());

        getMockRequest().addHeader("user-agent", "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0");
        assertEquals(UserAgentType.CHROME, userAgentHelper.getUserAgentType());
    }

    @Test

fi

# Note: the profile can be viewed by visiting chrome://tracing in a Chrome browser.
# See https://docs.bazel.build/versions/main/skylark/performance.html#performance-profiling

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

 * 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()

    client.use { client ->

                    });
                    // 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
                    // with the sort used by AbstractAcceptedApiChangesMaintenanceTask.

      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
  }

        CipherSuite.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
        CipherSuite.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
      )

    // This is nearly equal to the cipher suites supported in Chrome 72, current as of 2019-02-24.
    // See https://tinyurl.com/okhttp-cipher-suites for availability.
    private val APPROVED_CIPHER_SUITES =
      listOf(
        // TLSv1.3.
        CipherSuite.TLS_AES_128_GCM_SHA256,

 *  limitations under the License.
 */
@file:Suppress("ktlint:standard:filename")

package okhttp3.internal

import okhttp3.Headers

/** This is the same as Chrome's limit. */
internal const val HEADER_LIMIT = 256 * 1024L

internal fun Headers.commonName(index: Int): String = namesAndValues.getOrNull(index * 2) ?: throw IndexOutOfBoundsException("name[$index]")

  /**
   * The HTTP nonstandard {@code X-WebKit-CSP} 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 Chrome until
   * version 25. Please, use {@link #CONTENT_SECURITY_POLICY} to pass the CSP.
   *
   * @since 20.0
   */
  public static final String X_WEBKIT_CSP = "X-WebKit-CSP";

  /**

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">

---