检索登录用户的IP地址

Question

How do you get the IP address from a request in ASP.NET?

private string GetUserIP()
{
    string ipList = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

    if (!string.IsNullOrEmpty(ipList))
    {
        return ipList.Split(',')[0];
    }

    return Request.ServerVariables["REMOTE_ADDR"];
}

我总是收到null以回复上述功能。我期待值192.168.1.100

我将上述内部代码替换为return Request.UserHostAddress;，我收到::1