Simplest way to Force HTTPS during Page_Init

[pttools]

On a very few pages of my site i want to make sure they can only be accessed though HTTPS connections. What is the best way of accomplishing that. All the examples i see seem like they are trying to do it for the whole site. I was hoping of finding a way to accomplish that on \[code\]Page_Init\[/code\] or \[code\]Page_Preload\[/code\].And redirect to Https version