UdpClient.BeginReceive

在用C#开发UDP数据的时候，UdpClient有一个方法是UdpClient.BeginReceive，用来从远程主机异步接收数据报。

            UdpClient client = obj as UdpClient;
            IPEndPoint endpoint = new IPEndPoint(IPAddress.Any, 0);
            while (true)
            {
                client.BeginReceive(
                    delegate (IAsyncResult result)
                    {
                        
                        byte[] receiveBytes = result.AsyncState as byte[];
                        Console.WriteLine(BitConverter.ToString(receiveBytes));//委托接收消息
                    }, 
                    client.Receive(ref endpoint)
                    );
                Thread.Sleep(1000);
            }