libproxy support

[little-dude]

Hi,

libproxy is a multi-platform library that provides dynamic proxy management. It's extremely useful in big companies that force users to use different proxies based on a PAC file. @jplatte made rust bindings for libproxy already. Do you think it would be possible to support libproxy in hyper-proxy?

[jplatte]

I feel the need to mention that libproxy is my first / only crate using unsafe, and even if I did implement the bindings properly, I should probably replace my own memory managing code with something like mbox.

[tafia]

Do you think it would be possible to support libproxy in hyper-proxy?

Definitely, under a dedicated feature to be sure people opt-in.