For https use in legacy computercraft versions, a proxy server is required.
This is because HTTP requests are no longer allowed. I have setup a proxy host, coded by MyNameIsTrez.
The proxy can be accessed at cchtml.toondev.net:1337
Installation / use can be found at github.com/MyNameIsTrez/Pastebin-And-HTTPS-Tekkit-Classic
Working as of 5/02/24