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我以前使用过BeginAccept()和BeginRead(),但与Visual Studio 2012我想利用新的异步的(async,await)功能在我的socket服务器程序.

我该如何完成AcceptAsync和ReceiveAsync功能？

using System.Net;
using System.Net.Sockets;

namespace OfficialServer.Core.Server
{
    public abstract class CoreServer
    {
        private const int ListenLength = 500;
        private const int ReceiveTimeOut = 30000;
        private const int SendTimeOut = 30000;
        private readonly Socket _socket;

        protected CoreServer(int port, string ip = "0.0.0.0")
        {
            _socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            _socket.Bind(new IPEndPoint(IPAddress.Parse(ip), port));
            _socket.Listen(ListenLength);
            _socket.ReceiveTimeout = ReceiveTimeOut;
            _socket.SendTimeout = SendTimeOut;
            _socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
            _socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.DontLinger, true); …