if (isAndroid) {
        findAndroidPlatform()
      } else {
        findJvmPlatform()
      }

    private fun findAndroidPlatform(): Platform {
      AndroidLog.enable()
      return Android10Platform.buildIfSupported() ?: AndroidPlatform.buildIfSupported()!!
    }

    private fun findJvmPlatform(): Platform {
      if (isConscryptPreferred) {

    the OkHttp version in custom `User-Agent` headers.

 *  Fix: Don't crash when running as a plugin in Android Studio Canary 4.1. To enable
    platform-specific TLS features OkHttp must detect whether it's running in a JVM or in Android.
    The upcoming Android Studio runs in a JVM but has classes from Android and that confused OkHttp!

    // java.net.MalformedURLException: unknown protocol: mailto
    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:******@****.***")

 * [application interceptor][OkHttpClient.interceptors] or as a [OkHttpClient.networkInterceptors].
 *
 * The format of the logs created by this class should not be considered stable and may
 * change slightly between releases. If you need a stable logging format, use your own interceptor.
 */
class HttpLoggingInterceptor
  @JvmOverloads
  constructor(
    private val logger: Logger = Logger.DEFAULT,
  ) : Interceptor {

      val value = source.readInt()

      when (id) {
        // SETTINGS_HEADER_TABLE_SIZE
        1 -> {
        }

        // SETTINGS_ENABLE_PUSH
        2 -> {
          if (value != 0 && value != 1) {
            throw IOException("PROTOCOL_ERROR SETTINGS_ENABLE_PUSH != 0 or 1")
          }
        }

        // SETTINGS_MAX_CONCURRENT_STREAMS

        .allEnabledTlsVersions()
        .allEnabledCipherSuites()
        .build()
    assertThat(connectionSpec.toString()).isEqualTo(
      "ConnectionSpec(cipherSuites=[all enabled], tlsVersions=[all enabled], " +
        "supportsTlsExtensions=true)",
    )
  }

  @Test
  fun simpleToString() {
    val connectionSpec =
      ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)

          .apply {
            isAccessible = true
          }
          .get(this) as? SecretKey

    val randomRegex = "\"random\"\\s+:\\s+\"([^\"]+)\"".toRegex()

    fun register() {
      // Enable JUL logging for SSL events, must be activated early or via -D option.
      System.setProperty("javax.net.debug", "")
      logger =
        Logger.getLogger("javax.net.ssl")
          .apply {

    )
    assertThat(webSocket.close(1000, null)).isFalse()
  }

  /**
   * There's no read timeout when reading the first byte of a new frame. But as soon as we start
   * reading a frame we enable the read timeout. In this test we have the server returning the first
   * byte of a frame but no more frames.
   */
  @Test
  fun readTimeoutAppliesWithinFrames() {
    webServer.dispatcher =

**not stable** and will likely change before the final 5.0.0 release.

If you have code that subclasses `okhttp3.mockwebserver.QueueDispatcher`, this update is not source
or binary compatible. Migrating to the new `mockwebserver3` package will fix this problem.

 *  New: DNS over HTTPS is now a stable feature of OkHttp. We introduced this as an experimental

    sslSocket: SSLSocket,
  ): ConnectPlan {
    if (connectionSpecIndex != -1) return this
    return nextConnectionSpec(connectionSpecs, sslSocket)
      ?: throw UnknownServiceException(
        "Unable to find acceptable protocols." +
          " isFallback=$isTlsFallback," +
          " modes=$connectionSpecs," +
          " supported protocols=${sslSocket.enabledProtocols!!.contentToString()}",
      )
  }