* Don't start a new attempt until 250 ms after the most recent attempt was started.
 * Keep whichever TCP connection succeeds first and cancel all the others.
 * Race TCP only. Only attempt a TLS handshake on the winning TCP connection.

 *  New: `Response.byteString()` reads the entire response into memory as a byte string.
 *  New: `OkHttpClient.x509TrustManager` accessor.
 *  New: Permit [new WebSocket response codes][iana_websocket]: 1012 (Service Restart), 1013 (Try
    Again Later), and 1014 (invalid response from the upstream).
 *  New: Build with Kotlin 1.3.41, BouncyCastle 1.62, and Conscrypt 2.2.1.

    private val servers = mutableMapOf<String, MockWebServer>()
    private var started = false

    fun server(name: String): MockWebServer {
      return servers.getOrPut(name) {
        MockWebServer().also {
          if (started) it.start()
        }
      }
    }

    fun startAll() {
      started = true
      for (server in servers.values) {
        server.start()
      }
    }

  fun beforeEach(server: MockWebServer) {
    instanceServer = server

    assertThat(instanceServer).isNotSameInstanceAs(staticServer)
    assertThat(instanceServer).isSameInstanceAs(server)

    assertThat(server.started).isTrue()
    server.enqueue(MockResponse())
  }

  @AfterEach
  fun afterEach(server: MockWebServer) {
    assertThat(server).isSameInstanceAs(instanceServer)
  }

  @Test

 * server may not have had time to close the socket. The socket will be closed at an indeterminate
 * point before or during the second request. It may be closed after client has started sending the
 * request body. If a request body is not retryable then the client may fail the request, making
 * client behavior non-deterministic. Add delays in the client to improve the chances that the

   *
   * The target execution time is implemented on a best-effort basis. If another task in this queue
   * is running when that time is reached, that task is allowed to complete before this task is
   * started. Similarly the task will be delayed if the host lacks compute resources.
   *
   * @throws RejectedExecutionException if the queue is shut down and the task is not cancelable.
   */
  fun schedule(
    task: Task,

latency. OkHttp will make every effort to reuse existing connections to avoid this overhead and added latency.

Every OkHttpClient uses a connection pool. Its job is to maintain a reference to all open connections. When an HTTP request is started, OkHttp will attempt to reuse an existing connection from the pool. If there are no existing connections, a new one is created and put into the connection pool. For HTTP/2, the connection can be reused immediately. For HTTP/1, the request must be...

	public final fun getProtocols ()Ljava/util/List;
	public final fun getRequestCount ()I
	public final fun getServerSocketFactory ()Ljavax/net/ServerSocketFactory;
	public final fun getStarted ()Z
	public final fun noClientAuth ()V
	public final fun requestClientAuth ()V
	public final fun requireClientAuth ()V
	public final fun setBodyLimit (J)V
	public final fun setDispatcher (Lmockwebserver3/Dispatcher;)V

 * Any IO - writing to files or network should be done asynchronously.
 */
@ExperimentalOkHttpApi
abstract class ConnectionListener {
  /**
   * Invoked as soon as a call causes a connection to be started.
   */
  open fun connectStart(
    route: Route,
    call: Call,
  ) {}

  /**
   * Invoked when a connection fails to be established.
   */
  open fun connectFailed(
    route: Route,

The cache directory must be exclusively owned by a single instance.

Deleting the cache when it is no longer needed can be done.  However this may delete the purpose of the cache
which is designed to persist between app restarts.

```kotlin
cache.delete()
```
 
## Pruning the Cache

Pruning the entire Cache to clear space temporarily can be done using evictAll.

```kotlin
cache.evictAll()
```