用C#实现网络唤醒功能

C#网络唤醒模块

前提：     1、已知欲开启机的网卡物理地址（MAC)     2、用一些第三方应用软件测试（如：国产LanHelper)可以开启LAN内的任一机器，证明硬件设置正确。  基本思路来自网上一些介绍：     1、采用UDP 协议     2、向LAN中的欲开启PC机发送16进制的“FFFFFF"和网卡物理地址的16次重复 using System; using System.Net.Sockets; //we derive our class from a standart one public class WOLClass:UdpClient    {     public WOLClass():base()     { }     //this is needed to send broadcast packet     public void SetClientToBrodcastMode()        {       if(this.Active)        this.Client.SetSocketOption(SocketOptionLevel.Socket,                                  SocketOptionName.Broadcast,0);     }  }   ... //now use this class  //MAC_ADDRESS should  look like '013FA049'  private void WakeFunction(string MAC_ADDRESS)    {       WOLClass client=new WOLClass();       client.Connect(new          IPAddress(0xffffffff),  //255.255.255.255  i.e broadcast          0x2fff); // port=12287 let's use this one       client.SetClientToBrodcastMode();       //set sending bites       int counter=0;       //buffer to be send       byte[] bytes=new byte[1024];   // more than enough :-)      //first 6 bytes should be 0xFF      for(int y=0;y<6;y++)         bytes[counter++]=0xFF;      //now repeate MAC 16 times      for(int y=0;y<16;y++)      {          int i=0;          for(int z=0;z<6;z++)          {               bytes[counter++]=                   byte.Parse(MAC_ADDRESS.Substring(i,2),                   NumberStyles.HexNumber);               i+=2;          }      }      //now send wake up packet      int reterned_value=client.Send(bytes,1024);  }