asp.net mvc 获取请求服务器信息

HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]

/// <summary>
        /// 日志文件
        /// </summary>
        /// <param name="message">日志信息</param>
        /// <param name="title">日志标题</param>
        public static void CreateLog(string message, string title)
        {
            string path = string.Concat(AppDomain.CurrentDomain.BaseDirectory) + "\\LoginfoMsg";
            string filename = path + "\\" + DateTime.Now.Year.ToString() + "-" + DateTime.Now.Month.ToString() + "-" + DateTime.Now.Day.ToString() + "MsgLog.txt";
            string cont = "";
            FileInfo fileInf = new FileInfo(filename);
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            if (File.Exists(filename))//如何文件存在 则在文件后面累加
            {
                FileStream myFss = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
                StreamReader r = new StreamReader(myFss);
                cont = r.ReadToEnd();
                r.Close();
                myFss.Close();
            }

            FileStream myFs = new FileStream(filename, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);
            StreamWriter n = new StreamWriter(myFs);
            n.WriteLine(cont);
            n.WriteLine("------------------------------------------------------Begin-------------------------------------------------");
            n.WriteLine("*****" + title + "*****");
            n.WriteLine("时间：" + DateTime.Now.ToString());
            n.WriteLine("信息：" + message);
            n.WriteLine("IP：" + HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]);
            n.WriteLine("-------------------------------------------------------end--------------------------------------------------");
            n.Close();
            myFs.Close();

            if (fileInf.Length >= 1024 * 1024 * 200)
            {
                string NewName = path + "MsgLog" + DateTime.Now.ToShortDateString() + ".txt";
                File.Move(filename, NewName);
            }
        }