IMEX.mes.api/wwwroot/api/test/getIP/index.ashx

<%@ WebHandler Language="C#" Class="getIP" %>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Text.RegularExpressions;

public class getIP : IHttpHandler
{

    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/html";
        context.Response.Write("HostAddress："+context.Request.UserHostAddress +"<br>");
        context.Response.Write("HostName："+context.Request.UserHostName +"<br>");
        context.Response.Write("Agent："+context.Request.UserAgent +"<br>");
        context.Response.Write("REMOTE_ADDR："+context.Request.ServerVariables["REMOTE_ADDR"] +"<br>");
        context.Response.Write("HTTP_X_FORWARDED_FOR："+context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] +"<br>");
        
        string ip = context.Request.ServerVariables["REMOTE_ADDR"];
        context.Response.Write("MAC："+GetClientMac(ip) +"<br>");
        context.Response.Write("MAC2："+GetClientMac(ip) +"<br>");

    }

    [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);

    public static string GetClientMac(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;
    }

     //跨网段取Mac
     public string GetMac(string IP)
     {
         string dirResults = "";
         ProcessStartInfo psi = new ProcessStartInfo();
         Process proc = new Process();
         psi.FileName = "nbtstat";
         psi.RedirectStandardInput = false;
         psi.RedirectStandardOutput = true;
         psi.Arguments = "-A " + IP;
         psi.UseShellExecute = false;
         proc = Process.Start(psi);
         dirResults = proc.StandardOutput.ReadToEnd();
         proc.WaitForExit();
         dirResults = dirResults.Replace("\r", "").Replace("\n", "").Replace("\t", "");
         Regex reg = new Regex("Mac[ ]{0,}Address[ ]{0,}=[ ]{0,}(?<key>((.)*?))__MAC", RegexOptions.IgnoreCase | RegexOptions.Compiled);
         Match mc = reg.Match(dirResults + "__MAC");
 
         if (mc.Success)
         { return mc.Groups["key"].Value; }
         else
         {
             reg = new Regex("Host not found", RegexOptions.IgnoreCase | RegexOptions.Compiled);
             mc = reg.Match(dirResults);
             if (mc.Success)
             {
                 return "Host not found!";
             }
             else
             { return ""; }
         }
     }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }

}