code: def request_generic(self, act, coro, perform, complete):
          
          overlapped = pywintypes.OVERLAPPED()
          overlapped.object = act
          self.add_token(act, coro, (overlapped, perform, complete))
  
          try:
              rc, nbytes = perform(act, overlapped)
  
              if rc == 0:
                  # ah geez, it didn't got in the iocp, we have a result!"
                  win32file.PostQueuedCompletionStatus(
                      self.iocp, nbytes, 0, overlapped
                  )
          except pywintypes.error, exc:
              raise SocketError(exc)
docs: Performs an overlapped request (via `perform` callable) and saves
          the token and the (`overlapped`, `perform`, `complete`) trio.