* 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.
 */
class ApacheHttpClientHttp2Test {
  @Test
  fun testHttp2() {
    val client = HttpAsyncClients.createHttp2Default()

    client.use { client ->
      client.start()

- OkHttp targets the intersection of RFC correct *and* widely implemented.  Incorrect implementations that are very widely implemented e.g. a bug in Apache, Nginx, Google, Firefox should also be handled.

Before your code can be accepted into the project you must also sign the
[Individual Contributor License Agreement (CLA)][1].

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

  val chrome80 = sslLabsClients.first { it.userAgent == "Chrome" && it.version == "80" }
  val firefox34 = sslLabsClients.first { it.userAgent == "Firefox" && it.version == "34" }
  val firefox53 = sslLabsClients.first { it.userAgent == "Firefox" && it.version == "53" }
  val firefox73 = sslLabsClients.first { it.userAgent == "Firefox" && it.version == "73" }
  val java7 = sslLabsClients.first { it.userAgent == "Java" && it.version == "7u25" }

[OkHttp 3.14][OkHttp314]
------------------------

_2019-03-14_

Remove 2 TLSv1.3 cipher suites that are neither available on OkHttp’s host platforms nor enabled in releases of Chrome and Firefox.

##### RESTRICTED_TLS cipher suites

 * TLS_AES_128_GCM_SHA256[¹][tlsv13_only]
 * TLS_AES_256_GCM_SHA384[¹][tlsv13_only]
 * TLS_CHACHA20_POLY1305_SHA256[¹][tlsv13_only]
 * TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256