}
        }
      }

    client =
      client.newBuilder()
        .connectionSpecs(listOf(spec))
        .eventListenerFactory(
          clientTestRule.wrap(
            object : EventListener() {
              override fun connectionAcquired(
                call: Call,
                connection: Connection,
              ) {
                val sslSocket = connection.socket() as SSLSocket

            }
          },
        )
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        )
        .eventListener(listener)
        .apply {
          if (connectionType == HTTPS) {
            protocols(listOf(HTTP_1_1))
          }
        }
        .build()
    threadToCancel = Thread.currentThread()
  }

 * [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.
 *

    call.

    The `RequestBody.writeTo()` method may now retain a reference to the provided sink and
    hand it off to another thread to write to it after `writeTo` returns.

    The `EventListener` may now see requests and responses interleaved in ways not previously
    permitted. For example, a listener may receive `responseHeadersStart()` followed by

            throw AssertionError()
          }
          super.responseHeadersEnd(call, response)
        }
      }
    client =
      client.newBuilder()
        .eventListener(listener)
        .build()
    val body =
      MockStreamHandler()
        .sendResponse("/a has moved!\n", duplexResponseSent)
        .requestIOException()
        .exhaustResponse()
    server.enqueue(

  fun connectionIsImmediatelyUnhealthy() {
    val listener: EventListener =
      object : EventListener() {
        override fun connectionAcquired(
          call: Call,
          connection: Connection,
        ) {
          connection.socket().closeQuietly()
        }
      }
    client =
      client.newBuilder()
        .eventListener(listener)
        .build()
    executeSynchronously("/")

        .build()
    var client = buildClient(clientCert, clientIntermediateCa.certificate)
    val listener = RecordingEventListener()
    client =
      client.newBuilder()
        .eventListener(listener)
        .build()
    val socketFactory = buildServerSslSocketFactory()
    server.useHttps(socketFactory)
    server.requireClientAuth()

    server.enqueue(
      MockResponse(body = "XXX"),
    )
    val connections: MutableList<RealConnection?> = ArrayList()
    val localClient =
      client.newBuilder().eventListener(
        object : EventListener() {
          override fun connectionAcquired(
            call: Call,
            connection: Connection,
          ) {
            connections.add(connection as RealConnection)

    val interceptors: List<Interceptor> = client.interceptors()
    val networkInterceptors: List<Interceptor> = client.networkInterceptors()
    val eventListenerFactory: EventListener.Factory = client.eventListenerFactory()
    val proxySelector: ProxySelector = client.proxySelector()
    val cookieJar: CookieJar = client.cookieJar()
    val cache: Cache? = client.cache()

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

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()