[Seaside] from http to https

[Sean Allen]

We have a seanside application that starts serving pages in a standard
fashion but when it
comes time for an order to be placed, it needs to move them over from
http to https.

Right now we just have something that boils down to:

			canvas anchor
				callback: [ self purchase ];
				with: 'Purchase' ]

How do you go about getting the generated url to be a https
rather than http?