As direwolf20 says below, at the endpoints. For a real world example, check out Tahoe LAFS: https://github.com/tahoe-lafs/tahoe-lafs https://github.com/tahoe-l

As direwolf20 says below, at the endpoints. For a real world example, check out Tahoe LAFS: https://github.com/tahoe-lafs/tahoe-lafs https://github.com/tahoe-lafs/tahoe-lafs