itpc URL on an SSL server

I have a server software that generates podcast feeds, but this server runs under SSL, so all URL's are https. I did not find a way to use the itpc handler to launch iTunes, however when I post the URL manually in iTunes it works. But I really want my users just to click the button on the webpage an not copy/pasting it manually.

I tried:
itpcs://my.server.com:443/podcast/9928705/feed.rss => does not work, itpcs is not recognized
itpc://my.server.com:443/podcast/9928705/feed.rss => does not work, itunes doesn't get it that port 443 means that it should fetch it from https and not http
itpc: https://my.server.com:443/podcast/9928705/feed.rss => does not work (suggested here: http://deletethis.net/dave/?q=ssh)

So, how do I have to do it? Is there some hidden thing I have to add to the URL or does iTunes just ignore the port in the URL? Why?

Thanks for any hints!