Method shutdown

uvicorn/server.py:271–301

(self, sockets: list[socket.socket] | None = None)

        return False

    async def shutdown(self, sockets: list[socket.socket] | None = None) -> None:
        logger.info("Shutting down")

        # Stop accepting new connections.
        for server in self.servers:
            server.close()
        for sock in sockets or []:
            sock.close()  # pragma: full coverage

        # Request shutdown on all existing connections.
        for connection in list(self.server_state.connections):
            connection.shutdown()
        await asyncio.sleep(0.1)

        # When 3.10 is not supported anymore, use `async with asyncio.timeout(...):`.
        try:
            await asyncio.wait_for(
                self._wait_tasks_to_complete(),
                timeout=self.config.timeout_graceful_shutdown,
            )
        except asyncio.TimeoutError:
            logger.error(
                "Cancel %s running task(s), timeout graceful shutdown exceeded",
                len(self.server_state.tasks),
            )
            for t in self.server_state.tasks:
                t.cancel(msg="Task cancelled, timeout graceful shutdown exceeded")

        # Send the lifespan shutdown event, and wait for application shutdown.
        if not self.force_exit:
            await self.lifespan.shutdown()

    async def _wait_tasks_to_complete(self) -> None:
        # Wait for existing connections to finish sending responses.