* and returns it. Callers should use this to verify the request was sent as intended within the
   * given time.
   *
   * @param timeout how long to wait before giving up, in units of [unit]
   * @param unit a [TimeUnit] determining how to interpret the [timeout] parameter
   * @return the head of the request queue
   */
  @Throws(InterruptedException::class)
  public fun takeRequest(
    timeout: Long,

 *  Fix: MockWebServer explicitly closes sockets. (On some Android releases,
    closing the input stream and output stream of a socket is not sufficient.
 *  Fix: Buffer outgoing HTTP/2 frames to limit how many outgoing frames are
    created.
 *  Fix: Avoid crashing when cache writing fails due to a full disk.
 *  Fix: Improve caching of private responses.
 *  Fix: Update cache-by-default response codes.

}

// Returns number of errors that occurred the most (incl. nil) and the
// corresponding error value. NB When there is more than one error value that
// occurs maximum number of times, the error value returned depends on how
// golang's map orders keys. This doesn't affect correctness as long as quorum
// value is greater than or equal to simple majority, since none of the equally
// maximal values would occur quorum or more number of times.

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  class AddressState(
    val address: Address,
    val queue: TaskQueue,
    var policy: AddressPolicy,
  ) {
    /**
     * How many calls the pool can carry without opening new connections. This field must only be
     * accessed by the connection closer task.
     */
    var concurrentCallCapacity: Int = 0
  }

  companion object {