Reply to post: localhost

localhost

Along with localhost, I would also default to HTTP for anything that resolves to a private network (10.x.x.x, 172.16-31.x.x, 192.168.x.x and 127.x.x.x). A lot of localised services won't support https, but as they aren't external it's not so important. Not all photocopiers, toasters and wifi dild0s have valid SSL certificates.