Cascading external WMS using basic authentication over https

[Rahkonen Jukka]

>> Is it possible to make MapServer to cascade another WMS 
>> service that must be accessed through https and that wants to 
>> get username/password for authentication? How?
> 

>One idea is to pass along the authentication in the form of
>http://user:pass@example.org/cgi-bin/wms..., but that may not be the
>most secure approach.

Well, our MapServer should be a client for the secured one and send usernames and passwords. And that must happen through https, the other end does not listen http. I was just thinking that it cannot be as easy as setting mapfile like
CONNNECTIONTYPE WMS
CONNECTION "https://user:pass@example.com/etc."

I have found some previous postings telling that Mapserver is supporting https if curl supports it, but not any concrete examples about how to do it.

-Jukka-