87 lines
3.3 KiB
C#
87 lines
3.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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using System.Web;
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namespace AUTS.Services.Tool
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{
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public class IPHelper
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{
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public static string GetIP()
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{
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if (HttpContext.Current == null)
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{
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throw new Exception("HttpContext.Current为null");
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}
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string ip = string.Empty;
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if (!string.IsNullOrEmpty(HttpContext.Current.Request.ServerVariables["HTTP_VIA"]))
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ip = Convert.ToString(HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]);
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if (string.IsNullOrEmpty(ip))
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ip = Convert.ToString(HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]);
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return ip;
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}
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/// <summary>获取客户端的IP，可以取到代理后的IP
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///
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/// </summary>
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/// <returns></returns>
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public static string GetClientIp()
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{
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string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
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if (!string.IsNullOrEmpty(result))
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{
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//可能有代理
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if (result.IndexOf(".", StringComparison.Ordinal) == -1)
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result = null;
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else
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{
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if (result.IndexOf(",", StringComparison.Ordinal) != -1)
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{
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//有“,”，估计多个代理。取第一个不是内网的IP。
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result = result.Replace(" ", "").Replace("'", "");
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string[] temparyip = result.Split(",;".ToCharArray());
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foreach (string t in temparyip)
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{
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if (IsIpAddress(t)
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&& t.Substring(0, 3) != "10."
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&& t.Substring(0, 7) != "192.168"
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&& t.Substring(0, 7) != "172.16.")
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{
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return t; //找到不是内网的地址
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}
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}
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}
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else if (IsIpAddress(result)) //代理即是IP格式
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return result;
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else
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result = null; //代理中的内容 非IP，取IP
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}
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}
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if (string.IsNullOrEmpty(result))
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result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
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if (string.IsNullOrEmpty(result))
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result = HttpContext.Current.Request.UserHostAddress;
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return result;
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}
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/// <summary>判断是否是IP地址格式 0.0.0.0
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///
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/// </summary>
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/// <param name="str">待判断的IP地址</param>
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/// <returns>true or false</returns>
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public static bool IsIpAddress(string str)
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{
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if (string.IsNullOrEmpty(str) || str.Length < 7 || str.Length > 15) return false;
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const string regformat = @"^d{1,3}[.]d{1,3}[.]d{1,3}[.]d{1,3}$";
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Regex regex = new Regex(regformat, RegexOptions.IgnoreCase);
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return regex.IsMatch(str);
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}
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}
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}
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