c# - 以编程方式从网络接口(interface)发送数据

Question

我有一个端口查询应用程序，用于检查远程端口是打开还是阻塞。我想要做的是在进行端口检查时，能够选择本地机器上的哪个网络接口(interface)来发送流量。这可能吗？我该怎么做？

更新:

我已经添加了以下几行，但它仍然没有绑定(bind)

    string localip; 
    localip = interfacesComboBox.Text; 
    Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); 
socket.ReceiveTimeout = 1000; 
IPAddress myIP = IPAddress.Parse(localip); 
socket.Bind(new IPEndPoint(myIP, 0));

Answer 1

    private ushort BindToNextAvail(Socket sock, params ushort[] portList)
    {
        foreach (ushort i in portList)
        {
            try
            {
                sock.Bind(new IPEndPoint(IPAddress.Any, i));
                return (ushort)((IPEndPoint)sock.LocalEndPoint).Port;
            }
            catch
            {
                Logger.Instance().WriteLog(EventLogEntryType.Warning, "Unable to use port " + i.ToString());
            }
        }

        return 0;
    }

那是我的实时应用程序，所以它应该大致适合你。

以及该方法调用位置的示例:

Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
socket.ReceiveTimeout = 1000;

if (Bind(socket, 10000, 10001, 10002) == 0)
    throw new SocketException(10049); // "Cannot assign requested address" exception