val connection: RealConnection,
) : RoutePlanner.Plan {
  override val isReady = true

  override fun connectTcp() = error("already connected")

  override fun connectTlsEtc() = error("already connected")

  override fun handleSuccess() = connection

  override fun cancel() = error("unexpected cancel")

  override fun retry() = error("unexpected retry")

    )
  }

  @Test fun singleIpv6() {
    val result = reorderForHappyEyeballs(listOf(ipv6_ab))

    assertThat(result).isEqualTo(
      listOf(ipv6_ab),
    )
  }

  @Test fun singleIpv4() {
    val result = reorderForHappyEyeballs(listOf(ipv4_10_0_0_6))

    assertThat(result).isEqualTo(
      listOf(ipv4_10_0_0_6),
    )
  }

  @Test fun prioritiseIpv6() {

  @Throws(InterruptedException::class)
  fun tearDown() {
    taskQueue.shutdown()
    taskQueue.idleLatch().await(10, TimeUnit.SECONDS)
  }

  @Synchronized fun sentPingCount(): Int = sentPingCount

  @Synchronized fun receivedPingCount(): Int = receivedPingCount

  @Synchronized fun receivedPongCount(): Int = receivedPongCount

  @Throws(IOException::class)
  override fun onReadMessage(text: String) {

    if (flushHeaders) {
      connection.flush()
    }
  }

  fun enqueueTrailers(trailers: Headers) {
    this.withLock {
      check(!sink.finished) { "already finished" }
      require(trailers.size != 0) { "trailers.size() == 0" }
      this.sink.trailers = trailers
    }
  }

  fun readTimeout(): Timeout = readTimeout

  fun writeTimeout(): Timeout = writeTimeout

      this.hostOnly = hostOnly
    }

    fun path(path: String) =
      apply {
        require(path.startsWith("/")) { "path must start with '/'" }
        this.path = path
      }

    fun secure() =
      apply {
        this.secure = true
      }

    fun httpOnly() =
      apply {
        this.httpOnly = true
      }

    fun sameSite(sameSite: String) =
      apply {

  private val delegate: ResponseBody

  fun delegate(): ResponseBody {
    return delegate
  }

  override fun contentType(): MediaType? {
    return delegate.contentType()
  }

  override fun contentLength(): Long {
    return delegate.contentLength()
  }

  override fun source(): BufferedSource {
    return delegate.source()
  }

  override fun toString(): String {

    }


    private
    fun String.escape() = replace("<", "&lt;").replace(">", "&gt;")
}


private
typealias Version = String


private
typealias IncubatingDescription = String


private
typealias VersionsToIncubating = Map<Version, MutableSet<IncubatingDescription>>


private
interface VersionsToIncubatingCollector {

        private
        val disposable: Disposable

    ) : AutoCloseable {

        override fun close() {
            Disposer.dispose(disposable)
        }
    }

    private
    val messageCollector: MessageCollector
        get() = PrintingMessageCollector(System.out, MessageRenderer.PLAIN_RELATIVE_PATHS, false)

    fun <T : Any> mapParsedKotlinFiles(vararg sourceRoots: File, block: (KtFile) -> T): List<T> =

   * messages.
   */
  open fun onOpen(
    webSocket: WebSocket,
    response: Response,
  ) {
  }

  /** Invoked when a text (type `0x1`) message has been received. */
  open fun onMessage(
    webSocket: WebSocket,
    text: String,
  ) {
  }

  /** Invoked when a binary (type `0x2`) message has been received. */
  open fun onMessage(
    webSocket: WebSocket,
    bytes: ByteString,

 */
internal object Locks {
  inline fun <T> Dispatcher.withLock(action: () -> T): T {
    contract { callsInPlace(action, InvocationKind.EXACTLY_ONCE) }
    return lock.withLock(action)
  }

  inline fun <T> RealConnection.withLock(action: () -> T): T {
    contract { callsInPlace(action, InvocationKind.EXACTLY_ONCE) }
    return lock.withLock(action)
  }

  inline fun <T> RealCall.withLock(action: () -> T): T {