连接前如何获取MAC地址? [英] How to get the MAC address prior to connection?

问题描述

我遇到了在网络中ping一系列IP的情况.然后，我尝试连接到成功的ping.

I have a situation where I ping a range of IPs in the network. Then, I try to connect to the successful pings.

我的目标是连接到具有特定MAC前缀的特定设备.例如，当我对100个IP地址进行ping操作时，我可能会收到20条回复.这些答复包括计算机，打印机，可能还有我尝试连接的硬件.

My aim is to connect to specific equipment that has a specific MAC prefix. For example, when I ping a range of 100 IPs, I might get 20 replies. These replies include computers, printers, and possibly the hardware I am trying to connect.

当前发生的是，当我尝试连接到我想要的硬件以外的其他任何东西(例如计算机，打印机)时，我得到了超时连接.

Currently what happens is that when I try to connect to anything other than the hardware I would like (i.e computer, printer) I get a timeout connection.

这很好，但是效率不高.我想使用MAC地址过滤掉成功的ping列表，但是，我还没有找到一种解决方案，允许我在连接硬件之前先找到MAC地址.

This is fine, however, it is not efficient. I would like to filter out the successful ping list by using the MAC address, however, I have not yet been able to find a solution that allows me to seek a MAC address prior to connecting the hardware.

我在这里浏览了大多数MAC问题，但没有一个适合我的需求.

I have looked through most the MAC questions on here, but none fit my needs.

任何想法?

推荐答案

我能够在这里找到解决方案: http://pinvoke.net/default.aspx/iphlpapi/SendARP.html

I was able to find the solution here: http://pinvoke.net/default.aspx/iphlpapi/SendARP.html

以下方法返回MAC

internal static string GetMAC(string ip)
    {
        IPAddress dst = IPAddress.Parse(ip); // the destination IP address Note:Can Someone give the code to get the IP address of the server

        byte[] macAddr = new byte[6];
        uint macAddrLen = (uint)macAddr.Length;
        if (SendARP((int)dst.Address, 0, macAddr, ref macAddrLen) != 0)
            throw new InvalidOperationException("SendARP failed.");

        string[] str = new string[(int)macAddrLen];
        for (int i = 0; i < macAddrLen; i++)
            str[i] = macAddr[i].ToString("x2");
        return string.Join(":", str);
        //Console.WriteLine(string.Join(":", str));
    }

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