| Long: proxytunnel | 
 | Short: p | 
 | Help: Operate through a HTTP proxy tunnel (using CONNECT) | 
 | See-also: proxy | 
 | --- | 
 | When an HTTP proxy is used --proxy, this option will cause non-HTTP protocols | 
 | to attempt to tunnel through the proxy instead of merely using it to do | 
 | HTTP-like operations. The tunnel approach is made with the HTTP proxy CONNECT | 
 | request and requires that the proxy allows direct connect to the remote port | 
 | number curl wants to tunnel through to. | 
 |  | 
 | To suppress proxy CONNECT response headers when curl is set to output headers | 
 | use --suppress-connect-headers. |