if (insertAt == -1) insertAt = futureTasks.size
    futureTasks.add(insertAt, task)

    // Impact the coordinator if we inserted at the front.
    return insertAt == 0
  }

  /**
   * Schedules immediate execution of [Task.tryCancel] on all currently-enqueued tasks. These calls

  @Test
  fun cancelInFlightBeforeResponseReadThrowsIOE_HTTP_2() {
    enableProtocol(Protocol.HTTP_2)
    cancelInFlightBeforeResponseReadThrowsIOE()
  }

  /**
   * This test puts a request in front of one that is to be canceled, so that it is canceled before
   * I/O takes place.
   */
  @Test
  fun canceledBeforeIOSignalsOnFailure() {
    // Force requests to be executed serially.

      private val source: BufferedSource = source.buffer()

      // Visible for testing.
      @JvmField var dynamicTable = arrayOfNulls<Header>(8)

      // Array is populated back to front, so new entries always have lowest index.
      private var nextHeaderIndex = dynamicTable.size - 1

      @JvmField var headerCount = 0

      @JvmField var dynamicTableByteCount = 0