UDPClient组播接收计算机具有多个NIC上失败 [英] UDPClient Multicast receive fails on computer with multiple NICs

问题描述

我有一台计算机具有多个NIC - 和UDPClient的发送方法，不断地失败。下面的代码：

I've got a computer with multiple NICs - and UDPClient's send method continually fails. Here's the code:

        private static void receiveData()
    {
        recvSock = new UdpClient(PORT);
        //recvSock.Client.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastInterface, mainInterface);
        recvSock.JoinMulticastGroup(IPAddress.Parse(IP), 50);

        IPEndPoint iep = new IPEndPoint(IPAddress.Any, 0);

        while (true)
        {
            byte[] data = recvSock.Receive(ref iep);

            // Do not include messages from us
            if (myIPs.Contains(iep.Address))
                continue;

            string stringData = Encoding.ASCII.GetString(data, 0, data.Length);
            Console.WriteLine("received: " + stringData);

        }
    }

PORT = 5000和IP = 224.5 .6.7这样应该没问题。主要的问题是，我只是不能让过去的recvSock.Receive（）行。我看到了未来的数据包超过Wireshark的 - 但是代码是不会对其进行处理......

PORT = 5000 and IP = 224.5.6.7 so that should be OK. The main problem is that I just can't get past the recvSock.Receive() line. I see the packets coming in over wireshark - but the code just won't process them...

的思考？ ！在此先感谢

Thoughts? Thanks in advance!

丹

编辑：我可以证实，多网卡引起的问题 - - 该代码工作正常使用一个网卡。取消注释SetSocketOption行应该允许它与多个NIC的工作，但它仍然失败....想法？

I can confirm that the multi NICs is causing the problem --- the code works fine with a single NIC. Uncommenting the SetSocketOption line should allow it to work with multiple NICs, but it still fails.... thoughts?

推荐答案

我有同样的问题，发现这个职位，然后找到解决方案在：
UDP ：读取所有的网络接口的数据

I had the same issue found this post, then found the solution at: UDP: Read data from all network interfaces

基本上bind（）将0.0.0.0不工作，你必须绑定（）和JoinMulticastGroup（）上每一个本地IP地址。爱是爱微软为这一个。

Basically Bind() to 0.0.0.0 doesn't work and you have to Bind() and JoinMulticastGroup() on every local ip address. Gotta love Microsoft for this one.

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