Make a torrc option which prevents Tor from falling asleep
Now, if Tor client doesn't see any activity within certain period of time on its
SocksPort, it closes all circuits and disconnects from Internet. This may lead to troubles with some ISPs, where manual intervention is needed to connect to Internet again. It would be good to have an option which allows users to specify this period of inactivity manually (so it can be set to some big value), or an option which disables this behavior completely.