For native Crypt::SSLeay proxy support of https requests,
          you need to set an environment variable HTTPS_PROXY to your
          proxy server & port, as in:

            # PROXY SUPPORT
            $ENV{HTTPS_PROXY} = 'http://proxy_hostname_or_ip:port';
            $ENV{HTTPS_PROXY} = '127.0.0.1:8080';

          Use of the HTTPS_PROXY environment variable in this way is
          similar to LWP::UserAgent->env_proxy() usage, but calling
          that method will likely override or break the Crypt::SSLeay
          support, so do not mix the two.

          Basic auth credentials to the proxy server can be provided
          this way:

            # PROXY_BASIC_AUTH
            $ENV{HTTPS_PROXY_USERNAME} = 'username';
            $ENV{HTTPS_PROXY_PASSWORD} = 'password';

          For an example of LWP scripting with Crypt::SSLeay native
          proxy support, please see the source of the ./lwp-ssl-test
          script in the Crypt::SSLeay distribution.