c# - 如何忽略异常

Question

我正在使用 UDP 套接字发送然后接收消息。

所以当我收到时，我将超时异常设置为 4 秒...

sending_socket.ReceiveTimeout = 4000;
sending_socket.ReceiveFrom(ByteFromListener, ref receiving_end_point);

现在我得到了这个异常(这是我所期待的):System.dll 中出现类型为“System.Net.Sockets.SocketException”的未处理异常

附加信息:连接尝试失败，因为连接方在一段时间后没有正确响应，或者建立连接失败，因为连接的主机没有响应

我想知道如何忽略这个异常？

基本上我希望 UDPSOCKET 监听 4 秒，如果没有应答则尝试再次发送消息。我的代码如下(部分)

 IPEndPoint sending_end_point = new IPEndPoint(sendto, sendPort);
        EndPoint receiving_end_point = new IPEndPoint(IPAddress.Any, 0);           

        Socket sending_socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
        text_to_send = ("hello");
        byte[] send_buffer = Encoding.ASCII.GetBytes(text_to_send);
        sending_socket.SendTo(send_buffer, sending_end_point);
        Byte[] ByteFromListener = new byte[8000];
        sending_socket.ReceiveTimeout = 4000;
        sending_socket.ReceiveFrom(ByteFromListener, ref receiving_end_point);
        string datafromreceiver;
        datafromreceiver = Encoding.ASCII.GetString(ByteFromListener).TrimEnd('\0');
        datafromreceiver = (datafromreceiver.ToString());

Answer 1

try
{
     sending_socket.ReceiveFrom(ByteFromListener, ref receiving_end_point);
}
catch (SocketException ex) { }