* client.
     *
     * @see EventListener for semantics and restrictions on listener implementations.
     */
    fun eventListener(eventListener: EventListener) =
      apply {
        this.eventListenerFactory = eventListener.asFactory()
      }

    /**

      failWebSocket(ProtocolException("Request header not permitted: 'Sec-WebSocket-Extensions'"))
      return
    }

    val webSocketClient =
      client.newBuilder()
        .eventListener(EventListener.NONE)
        .protocols(ONLY_HTTP1)
        .build()
    val request =
      originalRequest.newBuilder()
        .header("Upgrade", "websocket")
        .header("Connection", "Upgrade")

    val sessionIds = mutableListOf<String>()

    assumeNetwork()

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

        .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager)
        .build()
    ```

 *  New: Add `cacheHit`, `cacheMiss`, and `cacheConditionalHit()` events to `EventListener`. Use
    these in logs, metrics, and even test cases to confirm your cache headers are configured as
    expected.

 *  New: Constant string `okhttp3.VERSION`. This is a string like "4.5.0-RC1", "4.5.0", or

	public abstract fun lookup (Ljava/lang/String;)Ljava/util/List;
}

public final class okhttp3/Dns$Companion {
}

public abstract class okhttp3/EventListener {
	public static final field Companion Lokhttp3/EventListener$Companion;
	public static final field NONE Lokhttp3/EventListener;
	public fun <init> ()V
	public fun cacheConditionalHit (Lokhttp3/Call;Lokhttp3/Response;)V
	public fun cacheHit (Lokhttp3/Call;Lokhttp3/Response;)V

          }
        }
      }

    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()
  }

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

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

    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)