require(length < bytesOut.size - lastFrame.start)

    // Move everything from bytesOut into a new buffer.
    val fullBuffer = Buffer()
    bytesOut.read(fullBuffer, bytesOut.size)

    // Copy back all but what we're truncating.
    fullBuffer.read(bytesOut, lastFrame.start + length)
    outFrames.add(OutFrame(lastFrame.sequence, lastFrame.start, true))
    return writer
  }

  }

  @AfterEach
  fun tearDown() {
    Thread.interrupted() // Clear interrupted state.
  }

  @Test
  fun interruptWritingRequestBody() {
    server.enqueue(MockResponse())
    server.start()
    val call =
      client.newCall(
        Request.Builder()
          .url(server.url("/"))
          .post(
            object : RequestBody() {
              override fun contentType() = null

            cancelAll()
          } finally {
            coordinatorWaiting = false
          }
        }
      }
    }
  }

  /** Start another thread, unless a new thread is already scheduled to start. */
  private fun startAnotherThread() {
    lock.assertHeld()
    if (executeCallCount > runCallCount) return // A thread is still starting.

    executeCallCount++

    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 shutdownAll() {
      try {
        val toClear = servers.values.toList()
        servers.clear()

    /** Returns true if this task is ready to start. */
    fun isReady() = true

    /** Do this task's work, and then start another, such as by calling [startNextTask]. */
    fun start()
  }

  private object TestThreadSerialTask : SerialTask {
    override fun start() = error("unexpected call")
  }

  inner class RunnableSerialTask(
    private val runnable: Runnable,
  ) : SerialTask {

   */
  @Throws(IOException::class)
  fun start(
    inetAddress: InetAddress,
    port: Int,
  ) = start(InetSocketAddress(inetAddress, port))

  /**
   * Starts the server and binds to the given socket address.
   *
   * @param inetSocketAddress the socket address to bind the server on
   */
  @Synchronized
  @Throws(IOException::class)
  private fun start(inetSocketAddress: InetSocketAddress) {

 */
class Http2FlowControlConnectionListener : ConnectionListener(), FlowControlListener {
  val start = System.currentTimeMillis()

  override fun receivingStreamWindowChanged(
    streamId: Int,
    windowCounter: WindowCounter,
    bufferSize: Long,
  ) {
    println("${System.currentTimeMillis() - start},$streamId,${windowCounter.unacknowledged},$bufferSize")
  }

          .redirectError(Redirect.INHERIT)
          .start()
      }
      Gui -> {
        return ProcessBuilder(
          "nohup", "wireshark", "-o", "tls.keylog_file:$logFile", "-S", "-l", "-Y", "http2", "-k",
        )
          .redirectInput(File("/dev/null"))
          .redirectOutput(File("/dev/null"))
          .redirectError(Redirect.INHERIT)
          .start().also {
            // Give it time to start collecting

    var requestCount: Int = mockWebServer.requestCount
    mockWebServer.enqueue(MockResponse())
    mockWebServer.start()
    mockWebServer.start(0)
    mockWebServer.start(InetAddress.getLocalHost(), 0)
    mockWebServer.shutdown()
    var dispatcher: Dispatcher = mockWebServer.dispatcher
    dispatcher = mockWebServer.dispatcher

        }
      }
    mockWebServer.dispatcher = dispatcher
    val startsFirst = buildRequestThread(firstRequest, firstResponseCode)
    startsFirst.start()
    val endsFirst = buildRequestThread(secondRequest, secondResponseCode)
    endsFirst.start()
    endsFirst.join()
    // First response is still waiting.
    assertThat(firstResponseCode.get()).isEqualTo(0)
    // Second response is done.