import okio.IOException
import org.junit.jupiter.api.Assertions

internal open class RecordingConnectionListener(
  /**
   * An override to ignore the normal order that is enforced.
   * EventListeners added by Interceptors will not see all events.
   */
  private val enforceOrder: Boolean = true,
) : ConnectionListener() {
  val eventSequence: Deque<ConnectionEvent> = ConcurrentLinkedDeque()

      address = address,
      proxy = proxy,
      socketAddress = socketAddress,
    )

  fun newChain(call: RealCall): RealInterceptorChain =
    RealInterceptorChain(
      call = call,
      interceptors = listOf(),
      index = 0,
      exchange = null,
      request = call.request(),
    )

  fun newRoutePlanner(
    client: OkHttpClient,
    address: Address = newAddress(),

Cleanup_ for a safe and fast upgrade.


Backwards-Incompatible Changes
------------------------------

#### OkHttpClient final methods

`OkHttpClient` has 26 accessors like `interceptors()` and `writeTimeoutMillis()` that were non-final
in OkHttp 3.x and are final in 4.x. These were made non-final for use with mocking frameworks like

    `requestBodyEnd()`, both on the same call. Such events may be triggered by different threads
    even for a single call.

    Interceptors that rewrite or replace the request body may now inadvertently interfere with
    duplex request bodies. Such interceptors should check `RequestBody.isDuplex()` and avoid
    accessing the request body when it is.

import okhttp3.CallEvent.Canceled
import org.junit.jupiter.api.Assertions.fail

open class EventRecorder(
  /**
   * An override to ignore the normal order that is enforced.
   * EventListeners added by Interceptors will not see all events.
   */
  private val enforceOrder: Boolean = true,
) {
  private val eventListenerAdapter =
    EventListenerAdapter()
      .apply {
        listeners += ::logEvent
      }

 * the proxy. This proxy connection is called a "TLS Tunnel" and is specified by
 * [RFC 2817][1]. The HTTP CONNECT request that creates this tunnel connection is special: it
 * does not participate in any [interceptors][Interceptor] or [event listeners][EventListener]. It
 * doesn't include the motivating request's HTTP headers or even its full URL; only the target
 * server's hostname is sent to the proxy.
 *

      }
    val interceptor2 =
      Interceptor { chain: Interceptor.Chain ->
        assertThat(chain.writeTimeoutMillis()).isEqualTo(100)
        chain.proceed(chain.request())
      }
    client =
      client
        .newBuilder()
        .writeTimeout(Duration.ofSeconds(5))
        .addInterceptor(interceptor1)
        .addInterceptor(interceptor2)
        .build()
    server.enqueue(

    val proxy: Proxy? = client.proxy()
    val protocols: List<Protocol> = client.protocols()
    val connectionSpecs: List<ConnectionSpec> = client.connectionSpecs()
    val interceptors: List<Interceptor> = client.interceptors()
    val networkInterceptors: List<Interceptor> = client.networkInterceptors()
    val eventListenerFactory: EventListener.Factory = client.eventListenerFactory()
    val proxySelector: ProxySelector = client.proxySelector()

    builder = builder.encodedFragment("")
    val httpUrl: HttpUrl = builder.build()
  }

  @Test
  fun interceptor() {
    var interceptor: Interceptor = Interceptor { TODO() }
    interceptor = Interceptor { it: Interceptor.Chain -> TODO() }
  }

  @Test
  fun interceptorChain() {
    val chain: Interceptor.Chain = newInterceptorChain()
  }

  @Test
  fun handshakeCertificates() {

      .newClientBuilder()
      .writeTimeout(Duration.ofMillis(500))
      .readTimeout(Duration.ofMillis(500))
      .addInterceptor(
        Interceptor { chain: Interceptor.Chain ->
          val response = chain.proceed(chain.request())
          // Ensure application interceptors never see a null body.
          assertThat(response.body).isNotNull()
          response
        },
      ).build()