connection_manager.py 文件源码

def close_all(self, only_receiving=True):
        """ Close all channels in the token network.
        Note: By default we're just discarding all channels we haven't received anything.
        This potentially leaves deposits locked in channels after `closing`. This is "safe"
        from an accounting point of view (deposits can not be lost), but may still be
        undesirable from a liquidity point of view (deposits will only be freed after
        manually closing or after the partner closed the channel).

        If only_receiving is False then we close and settle all channels irrespective of them
        having received transfers or not.
        """
        with self.lock:
            self.initial_channel_target = 0
            channels_to_close = (
                self.receiving_channels[:] if only_receiving else self.open_channels[:]
            )
            for channel in channels_to_close:
                # FIXME: race condition, this can fail if channel was closed externally
                self.api.close(self.token_address, channel.partner_address)
            return channels_to_close