Home/ Questions/Q 7857757
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-02T21:08:20+00:00

I am currently testing a site with multiple sub domains pointing to the same

  • 0

I am currently testing a site with multiple sub domains pointing to the same ASP.NET application, and the routing handles what to do with each request.

For testing, I have added several sub domains to my “hosts file”, e.g. “127.0.0.1 admin.TestDomain.com”, which is working fine.

However, the problem is that when I call any function in c# to get the host name/domain/url (HttpContext.Current.Request.Url…), the host url always comes back with “localhost”, rather than “TestDomain”.

Any ideas why this name is being resolved in this manner, and where I can get hold of “TestDomain.com”?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    I think, original host is lost after mapping of domain to IP-adress (localhost) by local operating system with your “host” file.
    You can try RawUrl instead to retrieve exact URL typed in browser:

    HttpContext.Current.Request.RawUrl

    Also you can try to fetch HTTP_HOST variable from user Host: request header, it should contain original host (not address or default host of the server) browser tries to request:

    string requestedDomain = HttpContext.Current.Request.ServerVariables["HTTP_HOST"];

    Maybe Getting parameters from RawUrl article will be helpful.

    • 0