public static MetarnetRegex GetInstance()
{
if (MetarnetRegex.instance == null)
{
MetarnetRegex.instance = new MetarnetRegex();
}
return(MetarnetRegex.instance);
}
/// <summary>
/// 取得客户端真实IP。如果有代理则取第一个非内网地址
/// </summary>
public static string IPAddress()
{
string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (result != null && result != string.Empty)
{
//可能有代理
if (result.IndexOf(".") == -1) //没有“.”肯定是非IPv4格式
{
result = null;
}
else
{
if (result.IndexOf(",") != -1)
{
//有“,”，估计多个代理。取第一个不是内网的IP。
result = result.Replace(" ", "").Replace("'", "");
string[] temparyip = result.Split(",;".ToCharArray());
for (int i = 0; i < temparyip.Length; i++)
{
if (MetarnetRegex.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]); //找到不是内网的地址
}
}
}
else if (MetarnetRegex.IsIPAddress(result)) //代理即是IP格式 ,IsIPAddress判断是否是IP的方法,
{
return(result);
}
else
{
result = null;
} //代理中的内容 非IP，取IP
}
}
string IpAddress = (HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null && HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != String.Empty) ? HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] : HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
if (null == result || result == string.Empty)
{
result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
}
if (result == null || result == string.Empty)
{
result = HttpContext.Current.Request.UserHostAddress;
}
return(result);
}