ASP.NET question regarding getting the IP address of a user

Question

I am trying to fetch the IP address using this:-

    protected void Page_Load(object sender, EventArgs e)
    {
        string ClientIP;
        ClientIP = HttpContext.Current.Request.UserHostAddress;
        Label1.Text = ClientIP;
    }

This code outputs 127.0.0.1.

And the code below displays nothing!

    string ClientIP;
    ClientIP = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
    Label1.Text = ClientIP;

How do I fetch the IP address? The REAL IP address of a user?

[EDIT]

I don't want EXACT location BTW. I need to know the country and then redirect the user to a webpage accordingly.

Keep in mind that NAT, proxies and so forth will obscure the results. — Brian Rasmussen, Sep 10 '10 at 08:45
I've had a proxy in the hosting centre that prevented getting the user-IP, so then you won't even get country data. — Hans Keﬆing, Sep 10 '10 at 08:53
If you want to display a page in the "correct language", then *country* is not enough - there are multilingual countries (or foreigners living there). Checking UserLanguages is then better. — Hans Keﬆing, Sep 10 '10 at 08:55
HTTP_ACCEPT_LANGUAGE is the server variable to know about browser's preferred language..right ? I am confused now..preferred language can be set as whatever in browser..isn't it ? So how can we be sure about the country ? Won't fetching IP address be the correct way to know about the country of a visitor?? — Serenity, Sep 10 '10 at 10:35

score 3 · Accepted Answer · answered Sep 10 '10 at 08:43

3

Request.Params["REMOTE_ADDR"]

answered Sep 10 '10 at 08:43

Julius A

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this too is displaying 127.0.0.1 as output – Serenity Sep 10 '10 at 08:45
4

@happysoul perhaps because you are testing on localhost ? – driis Sep 10 '10 at 08:46

score 2 · Answer 2 · answered Sep 10 '10 at 08:49

Using System.Net, try this -

// Then using host name, get the IP address list..
          IPHostEntry ipEntry = DNS.GetHostByName (strHostName);
          IPAddress [] addr = ipEntry.AddressList;

          for (int i = 0; i < addr.Length; i++)
          {
              Console.WriteLine ("IP Address {0}: {1} ", i, addr[i].ToString ());
          }

ASP.NET question regarding getting the IP address of a user

2 Answers2