如何忽略异常

Question

我使用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);

现在我得到这个异常(我期待):System.dll中出现未处理的类型'System.Net.Sockets.SocketException'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,或者建立的连接失败,因为连接的主机无法响应

我想知道如何忽略这个异常？

基本上我希望UDPSOCKET监听4秒钟,如果没有答案,那么尝试再次发送消息..我的代码是以下(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) { }