725 

   725 

   726         self._closed = True

   726         self._closed = True

   727 

   727 

   728         if not self._responsef:

   728         if not self._responsef:

   729             return

   729             return

   730 

   732 

   731         try:

   733         try:

   732             self._responsef.result()

   734             self._responsef.result()

   733         finally:

   735         finally:

   734             self._responseexecutor.shutdown(wait=True)

   736             self._responseexecutor.shutdown(wait=True)