fun nextFrame(
    requireSettings: Boolean,
    handler: Handler,
  ): Boolean {
    try {
      source.require(9) // Frame header size.
    } catch (e: EOFException) {
      return false // This might be a normal socket close.
    }

    //  0                   1                   2                   3
    //  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

    copy and paste [ObsoleteUrlFactory.java][obsolete_url_factory] or
    [ObsoleteApacheClient.java][obsolete_apache_client] into your project.

 *  **OkHttp now supports duplex calls over HTTP/2.** With normal HTTP calls the request must finish
    before the response starts. With duplex, request and response bodies are transmitted
    simultaneously. This can be used to implement interactive conversations within a single HTTP
    call.

import okhttp3.CallEvent.SecureConnectEnd
import okhttp3.CallEvent.SecureConnectStart
import org.junit.jupiter.api.Assertions.fail

open class RecordingEventListener(
  /**
   * An override to ignore the normal order that is enforced.
   * EventListeners added by Interceptors will not see all events.
   */
  private val enforceOrder: Boolean = true,
) : EventListener() {

        toClose.add(it)
      }
    assertFailsWith<IOException> {
      cache["k1"]
    }

    // Now let it operate normally.
    filesystem.setFaultyDelete(cacheDir / "k1.0.tmp", false)
    filesystem.setFaultyDelete(cacheDir, false)
    val snapshot = cache["k1"]
    assertThat(snapshot).isNull()
  }

  @ParameterizedTest

   * Response and normal event sequences will not be received.
   *
   * This event will only be received when a Cache is configured for the client.
   */
  open fun cacheHit(
    call: Call,
    response: Response,
  ) {
  }

  /**
   * Invoked when a response will be served from the network. The Response will be
   * available from normal event sequences.
   *

      redundantOpCount >= lruEntries.size
  }

  /**
   * Drops the entry for [key] if it exists and can be removed. If the entry for [key] is currently
   * being edited, that edit will complete normally but its value will not be stored.
   *
   * @return true if an entry was removed.
   */
  @Synchronized
  @Throws(IOException::class)
  fun remove(key: String): Boolean {
    initialize()

  }

  /**
   * Configure the server to [want client auth][SSLSocket.setWantClientAuth]. If the
   * client presents a certificate that is [trusted][TrustManager] the handshake will
   * proceed normally. The connection will also proceed normally if the client presents no
   * certificate at all! But if the client presents an untrusted certificate the handshake
   * will fail and no connection will be established.
   */

      requestBody1.flush()
    }.also { expected ->
      assertThat(expected.message)
        .isEqualTo("stream was reset: CANCEL")
    }
    body1.awaitSuccess()

    // Second duplex request proceeds normally.
    val requestBody2 = (call.request().body as AsyncRequestBody?)!!.takeSink()
    requestBody2.writeUtf8("request body\n")
    requestBody2.close()
    val responseBody2 = response2.body.source()

    FramingSink(
      finished = outFinished,
    )
  internal val readTimeout = StreamTimeout()
  internal val writeTimeout = StreamTimeout()

  /**
   * The reason why this stream was closed, or null if it closed normally or has not yet been
   * closed.
   *
   * If there are multiple reasons to abnormally close this stream (such as both peers closing it
   * near-simultaneously) then this is the first reason known to this peer.
   */

import okio.ByteString

/**
 * A non-blocking interface to a web socket. Use the [factory][WebSocket.Factory] to create
 * instances; usually this is [OkHttpClient].
 *
 * ## Web Socket Lifecycle
 *
 * Upon normal operation each web socket progresses through a sequence of states:
 *
 *  * **Connecting:** the initial state of each web socket. Messages may be enqueued but they won't
 *    be transmitted until the web socket is open.
 *