Had to work on one of these for a client, and decided that while there’s a whole host of documentation out there, there aren’t a lot of good working examples of how to use the proxy auto config functions properly in a complex file.
Since I spent the better part of 8 hours getting something that works properly in the environment (including site blocking to a custom server), I figured I’d share it with the users of this series of tubes in the hope it helps someone.