return executorServiceOrNull!!
      }

  /** Ready async calls in the order they'll be run. */
  private val readyAsyncCalls = ArrayDeque<AsyncCall>()

  /** Running asynchronous calls. Includes canceled calls that haven't finished yet. */
  private val runningAsyncCalls = ArrayDeque<AsyncCall>()

  /** Running synchronous calls. Includes canceled calls that haven't finished yet. */

import javax.net.ssl.HostnameVerifier
import javax.net.ssl.SSLSession

class RecordingHostnameVerifier : HostnameVerifier {
  @JvmField
  val calls: MutableList<String> = mutableListOf()

  @Synchronized override fun verify(
    hostname: String,
    session: SSLSession,
  ): Boolean {
    calls.add("verify $hostname")
    return true
  }

   * connection has been successfully released. No further calls to this listener will be made.
   */
  open fun onClosed(
    webSocket: WebSocket,
    code: Int,
    reason: String,
  ) {
  }

  /**
   * Invoked when a web socket has been closed due to an error reading from or writing to the
   * network. Both outgoing and incoming messages may have been lost. No further calls to this
   * listener will be made.
   */

import okio.Source
import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

/**
 * Factory for [calls][Call], which can be used to send HTTP requests and read their responses.
 *
 * ## OkHttpClients Should Be Shared
 *
 * OkHttp performs best when you create a single `OkHttpClient` instance and reuse it for all of
 * your HTTP calls. This is because each client holds its own connection pool and thread pools.

    operators before adopting it.

 *  New in okhttp-android: `HttpLoggingInterceptor.androidLogging()` and
    `LoggingEventListener.androidLogging()` write HTTP calls or events to Logcat.

 *  New: `OkHttpClient.webSocketCloseTimeout` configures how long a web socket connection will wait
    for a graceful shutdown before it performs an abrupt shutdown.

configured to fall back for broad connectivity.

Using OkHttp is easy. Its request/response API is designed with fluent builders and immutability. It
supports both synchronous blocking calls and async calls with callbacks.


Get a URL
---------

This program downloads a URL and prints its contents as a string. [Full source][get_example].

```java
OkHttpClient client = new OkHttpClient();

import javax.net.ssl.SSLPeerUnverifiedException
import javax.net.ssl.SSLSession
import javax.net.ssl.SSLSessionContext
import javax.security.cert.X509Certificate

/** An [SSLSession] that delegates all calls.  */
abstract class DelegatingSSLSession(protected val delegate: SSLSession?) : SSLSession {
  override fun getId(): ByteArray {
    return delegate!!.id
  }

  override fun getSessionContext(): SSLSessionContext {

   * in the **API contract** between OkHttp and the application.
   *
   * This method returns false unless it is overridden by a subclass.
   *
   * ### Duplex Transmission
   *
   * With regular HTTP calls the request always completes sending before the response may begin
   * receiving. With duplex the request and response may be interleaved! That is, request body bytes

   *
   *  * **Potentially-destructive navigations such as HTTP POST calls** use the context as the page
   *    originating the navigation, and the subject is the page being navigated to.
   *
   * The values of this attribute determine whether this cookie is sent for cross-site calls:
   *
   *  - "Strict": the cookie is omitted when the subject URL is an embedded resource or a

import java.util.function.BiFunction
import javax.net.ssl.HandshakeCompletedListener
import javax.net.ssl.SSLParameters
import javax.net.ssl.SSLSession
import javax.net.ssl.SSLSocket

/** An [SSLSocket] that delegates all calls.  */
abstract class DelegatingSSLSocket(protected val delegate: SSLSocket?) : SSLSocket() {
  @Throws(IOException::class)
  override fun shutdownInput() {
    delegate!!.shutdownInput()
  }