获取客户端IP及MAC地址代码,Asp.Net代码库,德仔网

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【Asp.Net】获取客户端IP及MAC地址

作者:xudianlong / 发布于2014/7/4/ 901

ASP.NET获取客户端IP及MAC地址很多时候非常必要的，像做投票、留言、评论等系统的时候防止别人恶意操作，导致数据的虚假行


	获取客户端IP:

	private string GetClientIP()
	{
	 string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
	 if (null == result || result == String.Empty)
	 {
	 result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
	 }

	 if (null == result || result == String.Empty)
	 {
	 result = HttpContext.Current.Request.UserHostAddress;
	 }
	 return result;
	}

	获取MAC地址:

	[DllImport("Iphlpapi.dll")]
	private static extern int SendARP(Int32 dest,Int32 host,ref Int64 mac,ref Int32 length);
	[DllImport("Ws2_32.dll")]
	private static extern Int32 inet_addr(string ip);

	private void Page_Load(object sender, System.EventArgs e)
	{
	 // 在此处放置用户代码以初始化页面
	 try
	 {
	 string userip=Request.UserHostAddress;
	 string strClientIP = Request.UserHostAddress.ToString().Trim();
	 Int32 ldest = inet_addr(strClientIP); //目的地的ip
	 Int32 lhost = inet_addr(""); //本地服务器的ip
	 Int64 macinfo = new Int64();
	 Int32 len = 6;
	 int res = SendARP(ldest,0, ref macinfo, ref len);
	 string mac_src=macinfo.ToString("X");
	 if(mac_src == "0")
	 {
	 if(userip=="127.0.0.1")
	 Response.Write ("正在访问Localhost!");
	 else
	 Response.Write ("欢迎来自IP为" + userip + "的朋友！" + "");
	 return;
	 }

	 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));
	 }
	 }
	 }

	 Response.Write ("欢迎来自IP为"+userip+ "" + ",MAC地址为"+mac_dest+"的朋友！"

	 + "");
	 }
	 catch(Exception err)
	 {
	 Response.Write(err.Message);
	 }
	}

试试其它关键字

　MAC地址　

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