同一局域网中获取客户端IP及MAC地址

 1using System;
 2using System.Collections.Generic;
 3using System.Text;
 4using System.Web;
 5using System.Web.UI;
 6using System.Web.UI.WebControls;
 7using System.Runtime.InteropServices;
 8
 9namespace SkyMac
10{
11    public class GetMac
12    {
13        [DllImport("Iphlpapi.dll")]
14        private static extern int SendARP(Int32 dest, Int32 host, ref Int64 mac, ref Int32 length);
15        [DllImport("Ws2_32.dll")]
16        private static extern Int32 inet_addr(string ip);
17
18        获取客户IP地址#region 获取客户IP地址
19        public string GetClientIP()
20        {
21            string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
22            if (null == result || result == String.Empty)
23            {
24                result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
25            }
26
27            if (null == result || result == String.Empty)
28            {
29                result = HttpContext.Current.Request.UserHostAddress;
30            }
31            return result;
32        }
33        #endregion
34
35        获取客户MAC地址#region 获取客户MAC地址
36        public bool GetClientMac(out string Tmp_ClientIP,out string Tmp_ClientMac)
37        {
38            Tmp_ClientIP = "";
39            Tmp_ClientMac = "";
40            try
41            {
42                string strClientIP = GetClientIP();
43                Int32 ldest = inet_addr(strClientIP); //目的地的ip 
44                Int64 macinfo = new Int64();
45                Int32 len = 6;
46                int res = SendARP(ldest, 0, ref macinfo, ref len);
47                string mac_src = macinfo.ToString("X");
48
49                if (mac_src == "0")
50                {
51                    if (strClientIP == "192.168.0.88")
52                        Tmp_ClientIP = "本地测试";
53                    else
54                        Tmp_ClientIP = strClientIP;
55                    //return;
56                }
57
58                while (mac_src.Length < 12)
59                {
60                    mac_src = mac_src.Insert(0, "0");
61                }
62
63                for (int i = 0; i < 11; i++)
64                {
65                    if (0 == (i % 2))
66                    {
67                        if (i == 10)
68                        {
69                            Tmp_ClientMac = Tmp_ClientMac.Insert(0, mac_src.Substring(i, 2));
70                        }
71                        else
72                        {
73                            Tmp_ClientMac = "-" + Tmp_ClientMac.Insert(0, mac_src.Substring(i, 2));
74                        }
75                    }
76                }
77                return true;
78            }
79            catch
80            {
81                return false;
82            }
83
84        }
85        #endregion
86
87    }
88}
89