In an iOS PCL build I am using HttpWebRequest for all my REST calls. Been testing this using standard HTTP but now that we have set up SSL on our local test server and I've changed the app to use HTTPS it fails with a 404 /protocol error. Note I am over riding SSL errors as we are using a self signed cert.
I posted a more detailed issue related to this on SO: http://stackoverflow.com/questions/37166387/webrequest-returns-404-when-switching-to-ssl
Regards and thanks