[ken_yap]

I'm not aware of any way this can be done. I did a quick search and this seems to be an unanswered question. But if you find anything, I'd be interested just because I'm curious.

Since torrent relies on the client opening ports to allow sharing, and if you are behind a proxy, then by definition you do not have direct access to the Internet, so a torrent couldn't work in the normal way through a proxy.

HTTPS proxies allow tunneling a TCP connection through the proxy but this isn't the same as listening for a connection from peers. So if torrent were to work through a tunneling proxy it would have to be a modified protocol and other clients would have to know how to handle this. Alternatively there would have to be a proxy protocol designed and implemented for torrents. I don't imagine sysadmins would be eager to install such a thing even if it were to be created.