http://zqktlwk5ilgohy63eyrptyb4mc76bunfmxcnstkmveyjnskxkpq3b5yd.onion/wiki/Network_Attributes_Of_Your_Computer
You need to modify the client-up script ( Linux , Windows , Mac OS ) and instead of just one route line with your VPN_SERVER_IP, you need a route line for the IP of each node you chose for EntryNodes . After that, you're pretty much good to go. Doing this over HTTP proxy is essentially the same as Tor, except you only need one route, and the config options are http-proxy and http-proxy-retry instead of socks.