在发送数据之前，C＃UDP套接字不会接收数据

Question

我在使用C＃发送UDP数据的套接字时遇到问题 - 基本上套接字没有从网络上的其他计算机接收任何数据，直到首先通过套接字发送了一些数据

不确定为什么它表现得很奇怪，我希望你们能指出我正确的方向 - 代码示例在下面。

由于

- 丹

private Socket UDPSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

IPAddress bindIP = BindingIP;
            if (bindIP == IPAddress.None)
                throw new Exception("Error binding to network interface \"" + _mcinter + "\" - interface not found");

            //recieve data from any source 
            IPEndPoint LocalHostIPEnd = new IPEndPoint(bindIP, Target_Port);

            //init Socket properties: 
            UDPSocket.SetSocketOption(SocketOptionLevel.Udp, SocketOptionName.NoDelay, 1);

            //allow for loopback testing 
            UDPSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, 1);

            //extremly important to bind the Socket before joining multicast groups 
            UDPSocket.Bind(LocalHostIPEnd);

            //get in waiting mode for data - always (this doesn't halt code execution) 
            UDPSocket.BeginReceiveFrom(...);

Answer 1

没关系，修好了

故事的寓意是---总是检查防火墙是否已启用......