using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Net;

namespace ConsoleApplication4
{
    internal class UdpState
    {
        private UdpClient udpClient;
        public UdpState(UdpClient client)
        {
            this.udpClient = client;
        }
        public UdpClient UdpClient
        {
            get { return this.udpClient; }
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            var udpClient = new UdpClient(3340);
            udpClient.Client.ReceiveBufferSize = 3 * 1024 * 1024;
            udpClient.BeginReceive(ReceiveCallback, new UdpState(udpClient));
            Console.ReadLine();
        }

        public static void ReceiveCallback(IAsyncResult ar)
        {
            UdpState state = ar.AsyncState as UdpState;
            // 1. 结束异步接收，获取数据和远程端点
            IPEndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
            byte[] receivedData = state.UdpClient.EndReceive(ar, ref remoteEndPoint);

            state.UdpClient.BeginReceive(ReceiveCallback, state);
            try
            {
                Console.WriteLine(11111111111111);
            }
            catch (Exception)
            {

            }
        }
    }
}