public List<Socket> ClientSocket = new List<Socket>();//为客户端建立的SOCKET连接
        
        //服务器侦听线程中新建客户端连接的方法
        private void RecieveAccept()
        {
            while (true)
            {
                Socket NewSocket = ServerSocket.Accept();
                NewSocket.BeginReceive(MsgBuffer, 0, MsgBuffer.Length, SocketFlags.None, new AsyncCallback(RecieveCallBack), NewSocket);
                ClientSocket.Add(NewSocket);
            }
        }



        //处理客户端发送的数据回发数据给客户端
        private void RecieveCallBack(IAsyncResult AR)
        {
                Socket RSocket = (Socket)AR.AsyncState;
                int REnd = RSocket.EndReceive(AR);
                RSocket.BeginReceive(MsgBuffer, 0, MsgBuffer.Length, 0, new AsyncCallback(RecieveCallBack), RSocket);
  
        }

代码就是上面的了，问题是，每次接受到数据后，我不知道是ClientSocket 里具体哪个Socket发来的消息，土一点的办法是接受到消息之后去列表里循环找IP匹配的项，但这样会不会太挫……