def stopServing(self, exception=None):
        if exception is None:
            exception = ServiceUnavailableError
        self.serve_exception = exception
        if self.pending:
            d = self.out_of_service_deferred = defer.Deferred()
            return d
        return defer.succeed(None)
Just stop receiving IO read events after the first
dataset/ETHPy150Open flowroute/txjason/txjason/service.py/JSONRPCService.stopServing--crossover with--dataset/ETHPy150Open seb-m/pyinotify/python3/examples/asyncio_notifier.py/handle_read_callback