Request.Url.GetLeftPart(UriPartial.Authority) returns http on https site

Question

We use Request.Url.GetLeftPart(UriPartial.Authority) to get the domain part of the site. This served our requirement on http. We recently change site to https (about 3 days ago) but this still returns with http://.. Urls were all changed to https and show in browser address bar.

Any idea why this happens?

Answer 1

The following example works fine and returns a string with "https":

var uri = new Uri("https://www.google.com/?q=102njgn24gk24ng2k");
var authority = uri.GetLeftPart(UriPartial.Authority);
// authority => "https://www.google.com"

You either have an issue with the HttpContext class right here, or all your requests are still using http:

1. You can check the requests HttpContext.Current.Request.IsSecureConnection property. If it is true, and the GetLeftPart method still returns http for you, I think you won't get around a replacing here.
2. If all your requests are really coming with http, you might enforce a secure connection in IIS.

You should also inspect the incoming URL and log it somewhere for debugging purposes.

Answer 2

This can also happen when dealing with a load balancer. In one situation I worked on, any https requests were converted into http by the load balancer. It still says https in the browser address bar, but internally it's a http request, so the server-side call you are making to GetLeftPart() returns http.

Answer 3

If your request is coming from ARR with SSL Offloading, Request.Url.GetLeftPart(UriPartial.Authority) just get http