Get Client Ip while submit a form. (ASP.net C#)

Question

I want to get the client ip when the user submit a form in my site. I try to use that command: Request.UserHostAddress

but I get instead of the ip: ::1

What should I do?

Thank you!

This is the UserHostaddress, assuming you are running your project locally. — Marco, Feb 26 '14 at 12:33

score 5 · Accepted Answer · edited May 23 '17 at 12:28

5

That's because you're testing locally. ::1 is the IPv6 equivalent to 127.0.0.1.

What is IP address '::1'?

edited May 23 '17 at 12:28

Community

1
1

answered Feb 26 '14 at 12:34

David East

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score 2 · Answer 2 · answered Feb 26 '14 at 12:35

::1 is the same as localhost

in ASP.NET you can do this to get the user IP Address

public static string GetUserIpAddress()
{
    string ip = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
    if (string.IsNullOrEmpty(ip))
    {
        ip = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
        if (ip == "::1") ip = "127.0.0.1"; // localhost
    }
    return ip;
}

score 2 · Answer 3 · answered Feb 26 '14 at 12:37

You can use REMOTE_ADDR, but it might not work if you are accessing the site locally, it will show local host. Below code will help you

        string clientIp = context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
     if( !string.IsNullOrEmpty(clientIp) ) 
{
      string[] forwardedIps = clientIp.Split( new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries );
      clientIp = forwardedIps[forwardedIps.Length - 1];
     } 
else {
      clientIp = context.Request.ServerVariables["REMOTE_ADDR"];
     }

Nagaraj S · Answer 4 · 2014-02-26T12:50:15.913

1

::1 is a IPv6 loopback address.That means 127.0.0.1

Ipv4  127.0.0.1    localhost
Ipv6  ::1          localhost

localhost

edited Feb 26 '14 at 12:50

answered Feb 26 '14 at 12:36

Nagaraj S

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Get Client Ip while submit a form. (ASP.net C#)

4 Answers4