Get Public client IP in C#/.net without external service

Question

How i get public client IP in C# without external api/service

I tried use this code. But, not success.

string ipAddress = Response.HttpContext.Connection.RemoteIpAddress.ToString();
        if(ipAddress == "::1")
        {
            ipAddress = Dns.GetHostEntry(Dns.GetHostName()).AddressList[1].ToString();
        }
        Console.WriteLine(ipAddress);

If you computer is behind DHCP, you need to use an external service. See https://stackoverflow.com/questions/3253701/get-public-external-ip-address — gunr2171, Nov 28 '22 at 02:16
Not DHCP, that's just auto assigning IP addresses. You mean NAT. — Jeremy Lakeman, Nov 28 '22 at 03:59
`::1` is localhost, and your code is correct, but you need to run your code on a server — Daniel, Nov 30 '22 at 18:37

score 0 · Accepted Answer · answered Nov 30 '22 at 12:04

on ASP.NET Follow This Method:

Public string GetIp()  
{  
string ip = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];  
if (string.IsNullOrEmpty(ip))  
{  
   ip = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];  
}  
return ip;  
}

otherwise use below method:

Public string GetIp()  {
        string IPAddress = "";
            IPHostEntry Host = default(IPHostEntry);
            string Hostname = null;
            Hostname = System.Environment.MachineName;
            Host = Dns.GetHostEntry(Hostname);
            foreach (IPAddress IP in Host.AddressList)
            {
                if (IP.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                {
                    IPAddress = Convert.ToString(IP);
                }
            }

            return IPAddress;
}

Please up-vote if you found this helpful.

The below method returns private client ip not the public one. — G3n1t0, Jul 26 '23 at 14:17

Get Public client IP in C#/.net without external service

1 Answers1