3 Help: Operate through a HTTP proxy tunnel (using CONNECT)
6 When an HTTP proxy is used --proxy, this option will cause non-HTTP protocols
7 to attempt to tunnel through the proxy instead of merely using it to do
8 HTTP-like operations. The tunnel approach is made with the HTTP proxy CONNECT
9 request and requires that the proxy allows direct connect to the remote port
10 number curl wants to tunnel through to.