推荐文章

c#去除字符串中的空格，回车，换行符，制表符

C#监控程序启动和关闭

C#监控程序启动和关闭using System；using System.Collections.Generic；using System.Text；using System.Diagnostics；using System.Threading；namespace ProcessListener{ class Program { static void Main(stri

C#操作USB口的摄像头

private const uint BM_CLICK = 0xF5；鼠标点击的消息，对于各种消息的数值，查API手册，也可用VS2010自带的SPY++ [DllImpt("user32.dll"， EntryPoint = "SendMessage"， SetLastErr = true， Set = Set.Auto)]private static extern int SendMe

C# FTP操作

C#文件监控对象FileSystemWatcher

使用C#文件监控对象FileSystemWatcher对文件夹下的删除、修改、新增

mvc获取真正的ip

日期:2018-07-07 点击:1382 来源:PB2.CN

/// <summary>
        /// 获取真ip
        /// </summary>
        /// <returns></returns>
        public  string GetRealIP()
        {
            string result = String.Empty; 
            result = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
            //可能有代理 
            if (!string.IsNullOrWhiteSpace(result))
            {
                //没有"." 肯定是非IP格式
                if (result.IndexOf(".") == -1)
                {
                    result = null;
                }
                else
                {
                    //有","，估计多个代理。取第一个不是内网的IP。
                    if (result.IndexOf(",") != -1)
                    {
                        result = result.Replace(" ", string.Empty).Replace("\"", string.Empty);
                        string[] temparyip = result.Split(",;".ToCharArray());
                        if (temparyip != null && temparyip.Length > 0)
                        {
                            for (int i = 0; i < temparyip.Length; i++)
                            {
                                //找到不是内网的地址
                                if (IsIPAddress(temparyip[i]) && temparyip[i].Substring(0, 3) != "10." && temparyip[i].Substring(0, 7) != "192.168"&& temparyip[i].Substring(0, 7) != "172.16.")
                                {
                                    return temparyip[i];
                                }
                            }
                        }
                    }
                    //代理即是IP格式
                    else if (IsIPAddress(result))
                    {
                        return result;
                    }
                    //代理中的内容非IP
                    else
                    {
                        result = null;
                    }
                }
            }
            if (string.IsNullOrWhiteSpace(result))
            {
                result = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
            }
            if (string.IsNullOrWhiteSpace(result))
            {
                result = System.Web.HttpContext.Current.Request.UserHostAddress;
            }
            return result;
        }
        public  bool IsIPAddress(string str)
        {
            if (string.IsNullOrWhiteSpace(str) || str.Length < 7 || str.Length > 15)
                return false;
            string regformat = @"^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})"; 
            Regex regex = new Regex(regformat, RegexOptions.IgnoreCase); 
            return regex.IsMatch(str);
        }

这篇文档对您是否有帮助？

上一篇：c#的HttpContext.Current.Request一些常见属性信息的内容

下一篇：c#如何获取来路网址