Method set_close_callback

python/python3/tornado/http1connection.py:317–329

Sets a callback that will be run when the connection is closed. Note that this callback is slightly different from `.HTTPMessageDelegate.on_connection_close`: The `.HTTPMessageDelegate` method is called when the connection is closed while receiving a message. This ca

(self, callback: Optional[Callable[[], None]])

            self.stream.set_close_callback(None)

    def set_close_callback(self, callback: Optional[Callable[[], None]]) -> None:
        """Sets a callback that will be run when the connection is closed.

        Note that this callback is slightly different from
        `.HTTPMessageDelegate.on_connection_close`: The
        `.HTTPMessageDelegate` method is called when the connection is
        closed while receiving a message. This callback is used when
        there is not an active delegate (for example, on the server
        side this callback is used if the client closes the connection
        after sending its request but before receiving all the
        response.
        """
        self._close_callback = callback

    def _on_connection_close(self) -> None:
        # Note that this callback is only registered on the IOStream