关于Socket的问题,急~~

private void Form1_Load(object sender, EventArgs e)

        {

            timer1.Start();



            //服务端节点    

            IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 1234);



            //创建套接字         

            Listensocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);



            //绑定IP地址和端口到套接字    

            Listensocket.Bind(ipep);



            //启动监听          

            Listensocket.Listen(10);

            listBox2.Items.Add("开始监听客户端的连接请求");

        }



private void timer1_Tick(object sender, EventArgs e)

        {

            //服务端传输文件到客户端

            //在一个单独的线程中监听客户连接

            listenThread = new Thread(listenClientConnnect);

            listenThread.Start();

            

        }



        Socket Listensocket;

        Thread listenThread;





        //监听函数

        private void listenClientConnnect()

        {

            stopListen();//停用  



            while (true)

            {

                //建立一个与客户端通信的套接字 

                Socket CommunicationSocket = Listensocket.Accept();



                //显示在listbox里面

                IPEndPoint clientIP = (IPEndPoint)CommunicationSocket.RemoteEndPoint;



                AddMsg(string.Format("{0} 连接到本服务器 {1}", clientIP.Address, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")));



                //创建一个文件对象     

                FileInfo fileinfo = new FileInfo("aaa.txt");

                //打开文件流            

                FileStream filestream = fileinfo.OpenRead();

                //文件分块传输，分块的大小,单位为字节         

                int PacketSize = 5000;

                //分块的数量               

                int PacketCount = (int)(fileinfo.Length / ((long)PacketSize));

                //最后一个分块的大小           

                int LastPacketSize = (int)(fileinfo.Length - ((long)(PacketSize * PacketCount)));

                //发送文件名到接收端,文件名长度最多只允许100个字节       

                byte[] Fullfilename = new byte[100];

                if (System.Text.Encoding.UTF8.GetBytes(fileinfo.Name).Length > 100)

                {

                    MessageBox.Show("文件名太长");

                    return;

                }

                else

                {

                    byte[] filename = System.Text.Encoding.UTF8.GetBytes(fileinfo.Name);

                    for (int i = 0; i < filename.Length; i++)

                        Fullfilename[i] = filename[i];

                    CommunicationSocket.Send(Fullfilename);

                }



                //文件按数据包的形式发送，定义数据包的大小      

                byte[] data = new byte[PacketSize];

                //开始循环发送数据包           

                for (int i = 0; i < PacketCount; i++)

                {

                    //从文件流读取数据并填充数据包  

                    filestream.Read(data, 0, data.Length);

                    //发送数据包                    

                    CommunicationSocket.Send(data, 0, data.Length, SocketFlags.None);

                }

                //发送最后一个数据包   

                if (LastPacketSize != 0)

                {

                    data = new byte[LastPacketSize];

                    filestream.Read(data, 0, data.Length);

                    //发送数据包             

                    CommunicationSocket.Send(data, 0, data.Length, SocketFlags.None);

                }

                filestream.Close();

                CommunicationSocket.Close();

                AddMsg(string.Format("向{0} 发送 文件 已完成 {1}", clientIP, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")));



                if (listenThread.IsAlive)

                {

                    listenThread.Abort();

                    if (Listensocket != null)

                    {

                        Listensocket.Close();

                    }

                    listBox2.Items.Add("服务器监听已经停止...");

                }

                //listenThread.Abort();      终止线程

                //Listensocket.Close();      释放Socket

                //CommunicationSocket.Close();

                //listenThread.DisableComObjectEagerCleanup();

            }

        }



        //停止监听

        private void stopListen()

        {

            Action stopAction = () => { stopListen(); };

        }