Add SOCKS5 support

[gundami]

Is your feature request related to a problem? Please describe. I'm using infrared to proxy my server in my home. But i have to use a reverse proxy tunnel to work with infrared because i don't have a public IP. And i have to add all ports manually. Is it possible to use socks5 or http_proxy to connect my backend server?

Describe the solution you'd like use sock5 or http_proxy to connect backend server