我用socket做二进制流的局域网文件传送出了bug

用的是vs2012 语言：C#

bug是我服务端发给客户端一个xml文件，客户端接收到后没有内容而且是资源被客户端占用删除都不行，必须关闭客户端以后接收到的xml才有内容，而且可以正常打开删除。部分代码如下：

发送文件：

private void ReceiveMes(object so)
        {
            Socket soClient = so as Socket;
            IPEndPoint ClBin = (IPEndPoint)soClient.RemoteEndPoint;
            string message = string.Empty;
            string toip = string.Empty;
            while (true)
            {

                try
                {
                    byte[] data = new byte[1024];
                    int length = soClient.Receive(data);
                    message = Encoding.UTF8.GetString(data, 0, length);
                    txtContent.Dispatcher.Invoke(new Action(() => { this.txtContent.AppendText(message + "\r\n"); }));
                    toip = message.Substring(message.LastIndexOf(' ') + 1);
                    Socket SendKet = GetSendKet(toip);
                    if (message.Equals("Message "+toip))
                    {
                        byte[] mes = Encoding.UTF8.GetBytes("Message");
                        SendKet.Send(mes);

                        FileStream fileSteam = new FileStream("Message.xml", FileMode.OpenOrCreate, FileAccess.Read);
                        ///文件大小
                        Byte[] fsSize = new Byte[fileSteam.Length];
                        ///读取文件的二进制流
                        BinaryReader reader = new BinaryReader(fileSteam);

                        ///读取数据
                        reader.Read(fsSize, 0, (int)fileSteam.Length);
                        ///发送数据
                        try
                        {
                            SendKet.Send(fsSize);
                        }
                        catch
                        {
                            MessageBox.Show("服务器忙，请稍后再发！");
                        }

                        ///关闭文件流
                        fileSteam.Close();
                        //SendKet.LingerState.Enabled = false;

                    }

接收文件：

private void Recevie()
        {
            while (true)
            {
                try
                {
                    byte[] message = new byte[1024];
                    int length = ketOne.Receive(message);
                    string mes = Encoding.UTF8.GetString(message, 0, length);
                    if (mes.Equals("Message"))
                    {
                        int i = 0;
                        int bytes = 0;
                        Byte[] recData = new Byte[1024];
                        ///创建一个新文件保存接收的数据
                        string Messages = "Message.xml";
                        FileStream fileStream = new FileStream(Messages, FileMode.OpenOrCreate);
                        BinaryWriter writer = new BinaryWriter(fileStream);

                        while (true)
                        {
                            bytes = ketOne.Receive(recData, recData.Length,0);
                            //读取完成后退出循环
                            i += bytes;
                            if (bytes <= 0)
                            {
                                break;
                            }
                            writer.Write(recData, 0, bytes);
                        }


                        ///关闭写文件流
                        fileStream.Close();
                        writer.Close();
                        //ketOne.Shutdown(SocketShutdown.Receive);
                        //ketOne.Close();

                        C# socket wpf --------------------编程问答-------------------- 而且我连续接收这个文件的话内容会在原来的基础上追加 --------------------编程问答-------------------- 调试看FileStream有没有close --------------------编程问答-------------------- 你要采用垃圾处理机制，用完后要释放

补充：.NET技术 ,  C#