将失败发送到udp客户端后，C＃UDP失败

Question

实际上下面的代码运行良好。这里的问题是当没有人从服务器/接收器，upd服务器/接收器接收udp时。服务器将停止发送和接收udp

    private void Form1_Load(object sender, EventArgs e)
    {
        int receiverPort = 54679;
        UdpClient receiver = new UdpClient(receiverPort);
        receiver.BeginReceive(DataReceived, receiver);
    }
    private void DataReceived(IAsyncResult ar)
    {
        UdpClient c = (UdpClient)ar.AsyncState;
        IPEndPoint receivedIpEndPoint = new IPEndPoint(IPAddress.Any, 54679);
        Byte[] receivedBytes = c.EndReceive(ar, ref receivedIpEndPoint);

        try
        {
            Invoke((MethodInvoker)delegate
            {
                string _hexString = ByteArrayToString(receivedBytes).Replace(" ", "");
                TextBox1.Text = _hexString;
                string replay = "I got your message";
                byte[] replayBinary = StringToByteArray(replay);
                IPEndPoint replayIpAddress = receivedIpEndPoint;
                c.Send(replayBinary, replayBinary.Length, replayIpAddress);
            });
            c.BeginReceive(DataReceived, ar.AsyncState);
        }
        catch { }
    }