C#通过网络获取IP地址

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Web;

namespace ConsoleApp1
{
    class Program
    {
      
        private static void Main(string[] args)
        {
            string msg = GetHostStr(null);

            System.Console.WriteLine("IP:"+msg);

            Console.ReadKey();
        }

        public static string GetHostStr(HttpRequestBase request)
        {
            var ipList = new List<IPAddress>();
            var addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
            foreach (var add in addressList)
            {
                try
                {
                    long a = add.ScopeId;
                }
                catch
                {
                    ipList.Add(add);                   
                }
            }
            var host = ipList.Count > 0 ? ipList[0].ToString() : request.Url.Host;
            return host;
        }
    }
}

        /// <summary>
        /// 得到用户IP地址
        /// </summary>
        /// <returns>返回用户IP地址,如果获取不到返回 0.0.0.0 </returns>
        /// 
        public static string ClientIP
        {
            get
            {
                var context = HttpContext.Current;
                string result = "";
                if(context== null|| context.Request==null)
                {
                    result = "localHost";
                }
                if (string.IsNullOrEmpty(result))
                {
                    result = context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; //获取包括使用了代理服务器的地址列表。
                }
                if (string.IsNullOrEmpty(result))
                {
                    result = context.Request.ServerVariables["REMOTE_ADDR"]; //最后一个代理服务器地址。
                }
                if (string.IsNullOrEmpty(result))
                {
                    result = context.Request.UserHostAddress;
                }
                return result;
            }
        }