* and duplex calls where the timeout only applies to the initial setup.
   */
  fun timeoutEarlyExit() {
    check(!timeoutEarlyExit)
    timeoutEarlyExit = true
    timeout.exit()
  }

  /**
   * @param closeExchange true if the current exchange should be closed because it will not be used.
   *     This is usually due to either an exception or a retry.
   */

      trackFailure(e)
      throw e
    }
  }

  @Throws(IOException::class)
  fun peekTrailers(): Headers? = codec.peekTrailers()

  fun upgradeToSocket(): Socket {
    call.timeoutEarlyExit()
    (codec.carrier as RealConnection).useAsSocket()

    eventListener.requestBodyStart(call)

    return object : Socket {
      override fun cancel() {
        ******@****.***()
      }