如何通过没有IP地址的nic发送WOL包(或任何东西)？

Question

我正在尝试在所有接口上发送WOL包以唤醒网关(这是DHCP服务器,因此机器还没有IP).

似乎我只能将套接字绑定到IP和端口对......

所以问题是:如何创建一个绑定到没有IP的NIC的套接字(或其他东西)？(任何语言都可以.c#是首选)

@ctacke:我知道WOL是由MAC地址完成的...我的问题是Windows只在NIC上发送UDP广播,Windows认为是主要的NIC(甚至连我的Vista机器上的默认路由都不是NIC) ).我似乎无法找到一种方法将套接字绑定到没有IP地址的接口.(像DHCP客户端这样做)

@Arnout:为什么不呢？客户端知道网关的MAC地址.我只想要像DHCP客户端一样发送WOL数据包... ...(DHCP发现数据包声称来自0.0.0.0)我不介意我是否必须逐字节构造整个数据包...

Answer 1

似乎我找到了解决方案.可以使用winpcap将数据包注入任何接口.并且有.net的好包装:http://www.tamirgal.com/home/dev.aspx？Item = SharpPcap

(我本来希望一个解决方案,不需要安装额外的库......)

更新:以下是我在所有接口上发送WOL数据包的方法:

//You need SharpPcap for this to work

private void WakeFunction(string MAC_ADDRESS)
{
    /* Retrieve the device list */
    Tamir.IPLib.PcapDeviceList devices = Tamir.IPLib.SharpPcap.GetAllDevices();

    /*If no device exists, print error */
    if (devices.Count < 1)
    {
        Console.WriteLine("No device found on this machine");
        return;
    }

    foreach (NetworkDevice device in devices)
    {
        //Open the device
        device.PcapOpen();

        //A magic packet is a broadcast frame containing anywhere within its payload: 6 bytes of ones
        //(resulting in hexadecimal FF FF FF FF FF FF), followed by sixteen repetitions 

        byte[] bytes = new byte[120];
        int counter = 0;
        for (int y = 0; y < 6; y++)
            bytes[counter++] = 0xFF;
        //now repeat 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;
            }
        }

        byte[] etherheader = new byte[54];//If you say so...
        var myPacket = new Tamir.IPLib.Packets.UDPPacket(EthernetFields_Fields.ETH_HEADER_LEN, etherheader);

        //Ethernet
        myPacket.DestinationHwAddress = "FFFFFFFFFFFFF";//it's buggy if you don't have lots of "F"s... (I don't really understand it...)
        try { myPacket.SourceHwAddress = device.MacAddress; }
        catch { myPacket.SourceHwAddress = "0ABCDEF"; }//whatever
        myPacket.EthernetProtocol = EthernetProtocols_Fields.IP;

        //IP
        myPacket.DestinationAddress = "255.255.255.255";
        try { myPacket.SourceAddress = device.IpAddress; }
        catch { myPacket.SourceAddress = "0.0.0.0"; }
        myPacket.IPProtocol = IPProtocols_Fields.UDP;
        myPacket.TimeToLive = 50;
        myPacket.Id = 100;
        myPacket.Version = 4;
        myPacket.IPTotalLength = bytes.Length - EthernetFields_Fields.ETH_HEADER_LEN;           //Set the correct IP length
        myPacket.IPHeaderLength = IPFields_Fields.IP_HEADER_LEN;

        //UDP
        myPacket.SourcePort = 9;                
        myPacket.DestinationPort = 9;           
        myPacket.UDPLength = UDPFields_Fields.UDP_HEADER_LEN;


        myPacket.UDPData = bytes;
        myPacket.ComputeIPChecksum();
        myPacket.ComputeUDPChecksum();

        try
        {
            //Send the packet out the network device
            device.PcapSendPacket(myPacket);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }

        device.PcapClose();
    }
}