find_proxy()
Instance Public methods
returns a proxy URI. The proxy URI is obtained from environment variables such as
http_proxy, ftp_proxy, no_proxy, etc. If there is no proper proxy, nil is
returned.
Note that capitalized variables (HTTP_PROXY, FTP_PROXY, NO_PROXY, etc.) are
examined too.
But http_proxy and HTTP_PROXY is treated specially under CGI environment. It's because HTTP_PROXY may be
set by Proxy: header. So HTTP_PROXY is not used. http_proxy is not used too
if the varia