在C# mvc中公开ip访问我网站的用户的地址和位置

Question

i have a website and I want to store ip address and location of the users who are visiting my website. I tried many ways but the code below gives me the ip of server where my website is hosted and not client's ip.

//First code I tried.

bool GetLan = false;

        string visitorIPAddress = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
        if (String.IsNullOrEmpty(visitorIPAddress))
            visitorIPAddress = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
        if (string.IsNullOrEmpty(visitorIPAddress))
            visitorIPAddress = System.Web.HttpContext.Current.Request.UserHostAddress;

        if (string.IsNullOrEmpty(visitorIPAddress) || visitorIPAddress.Trim() == "::1")
        {
            GetLan = true;
            visitorIPAddress = string.Empty;
        }
        if (GetLan)
        {
            if (string.IsNullOrEmpty(visitorIPAddress))
            {
                //This is for Local(LAN) Connected ID Address
                string stringHostName = Dns.GetHostName();
                //Get Ip Host Entry
                IPHostEntry ipHostEntries = Dns.GetHostEntry(stringHostName);
                //Get Ip Address From The Ip Host Entry Address List
                IPAddress[] arrIpAddress = ipHostEntries.AddressList;
                try
                {
                    visitorIPAddress = arrIpAddress[arrIpAddress.Length - 2].ToString();
                }
                catch
                {
                    try
                    {
                        visitorIPAddress = arrIpAddress[0].ToString();
                    }
                    catch
                    {
                        try
                        {
                            arrIpAddress = Dns.GetHostAddresses(stringHostName);
                            visitorIPAddress = arrIpAddress[0].ToString();
                        }
                        catch
                        {
                            visitorIPAddress = "127.0.0.1";
                        }
                    }
                }

            }

        }

        var zaz = "";
        zaz = visitorIPAddress.ToString();

//second code i tried

string VisitorsIPAddr = string.Empty;
        if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null)
        {
            VisitorsIPAddr = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
        }
        else if (System.Web.HttpContext.Current.Request.UserHostAddress.Length != 0)
        {
            VisitorsIPAddr = System.Web.HttpContext.Current.Request.UserHostAddress;
        }

Answer 1

HttpContext.Current.Request or HttpContext.Request will contain the client's IP address - you don't need the above boilerplate code.

Try using the HttpRequest.UserHostAddress property in .NET Framework:

public ActionResult Test()
{
    string clientIp = HttpContext.Current.Request.UserHostAddress;

    ...
}

---

Do note however that if there have been proxy servers between the client & your server, the IP may not be the client's IP but the proxy server's IP .

In these cases, you may find the original client IP in the X-Forwarded-For header but there are no guarantees for the presence of this header nor you being aware of the client's real IP in general.