Request.ServerVariables["SERVER_NAME"] is always localhost

Question

I'm developing an ASP.NET 3.5 application with Visual Studio 2008.

My default page has some redirection code in the Page_Load method:

    protected void Page_Load(object sender, EventArgs e)
    {

        string sname = Request.ServerVariables["SERVER_NAME"].ToLower();

        if (sname.ToLower().Contains("intranet"))
        {
        Response.Redirect("/intranet/Default.aspx");
        }
        else if ((sname.ToLower().Contains("extranet")))
        {
            Response.Redirect("/extranet/Default.aspx");
        }
        else {
            Response.Redirect("/web/Default.aspx");
        }
    }

I've modified my hosts file so that intranet and extranet redirect to my local machine.

127.0.0.1       intranet
127.0.0.1       extranet

I then type the URL http://extranet in my browser.

However, the problem is that the server variable value returned from Request.ServerVariables["SERVER_NAME"] is always "localhost" and not "extranet"

Any help on how to get the right value?

Many thanks

Answer 1

Request.ServerVariables["HTTP_HOST"] gets the value I was looking for :)