ASP.NET获取IP地址以及MAC地址

来源：互联网发布：nginx 不显示版本编辑：程序博客网时间：2024/05/18 17:26

（一）

/方法一
HttpContext.Current.Request.UserHostAddress;

//方法二
HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

//方法三 (局域网)
string strHostName = System.Net.Dns.GetHostName();
string clientIPAddress = System.Net.Dns.GetHostAddresses(strHostName).GetValue(0).ToString();

//方法四（无视代理）
HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

//方法五
if(Context.Request.ServerVariables["HTTP_VIA"]!=null) // using proxy
{
ip=Context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString(); // Return real client IP.
}
else// not using proxy or can't get the Client IP
{
ip=Context.Request.ServerVariables["REMOTE_ADDR"].ToString(); //While it can't get the Client IP, it will return proxy IP.
}

备注：

1. 有些代理是不会发给我们真实IP地址的

2. 有些客户端会因为“header_access deny”的安全设置而不发给我们IP

（二）使用IP获取MAC地址

private string GetCustomerMac(string IP)
    {
        Int32 ldest = inet_addr(IP);
        Int64 macinfo = new Int64();
        Int32 len = 6;
        int res = SendARP(ldest, 0, ref macinfo, ref len);
        string mac_src = macinfo.ToString("X");

        while (mac_src.Length < 12)
        {
            mac_src = mac_src.Insert(0, "0");
        }

string mac_dest = "";

        for (int i = 0; i < 11; i++)
        {
            if (0 == (i % 2))
            {
                if (i == 10)
                {
                    mac_dest = mac_dest.Insert(0, mac_src.Substring(i, 2));
                }
                else
                {
                    mac_dest = "-" + mac_dest.Insert(0, mac_src.Substring(i, 2));
                }
            }
        }

return mac_dest;
}

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