code: def request_generic(self, act, coro, perform, complete):
          
          overlapped = OVERLAPPED()
          overlapped.object = act
          self.add_token(act, coro, (overlapped, perform, complete))
  
          rc, nbytes = perform(act, overlapped)
          completion_key = c_long(0)
          if rc == 0:
              # ah geez, it didn't got in the iocp, we have a result!
              pass
  
  
              # ok this is weird, apparently this doesn't need to be requeued
              #  - need to investigate why (TODO)
              #~ PostQueuedCompletionStatus(
                  #~ self.iocp, # HANDLE CompletionPort
                  #~ nbytes, # DWORD dwNumberOfBytesTransferred
                  #~ byref(completion_key), # ULONG_PTR dwCompletionKey
                  #~ overlapped # LPOVERLAPPED lpOverlapped
              #~ )
          elif rc != WSA_IO_PENDING:
              self.remove_token(act)
              raise SocketError(rc, "%s on %r" % (ctypes.FormatError(rc), act))
docs: Performs an overlapped request (via `perform` callable) and saves
          the token and the (`overlapped`, `perform`, `complete`) trio.