/// <summary>/// 客户端通讯回调函数/// </summary>/// <param name="ar"></param>private void TCPCallBack(IAsyncResult ar){LeafTCPClient client = (LeafTCPClient)ar.AsyncState;try{if (client.NetWork.Connected){NetworkStream ns = client.NetWork.GetStream();byte[] recdata = new byte[ns.EndRead(ar)];//这里很好 recdata数组长度就是获得数据的长度  收到六个字节的数据，则recdata.Length=6   远程异常关闭时，执行完这句话后发生IOException异常if (recdata.Length > 0){Array.Copy(client.buffer, recdata, recdata.Length);if (DataReceived != null){DataReceived.BeginInvoke(client.Name, recdata, null, null);//异步输出数据到UI界面
                        }DataProcess(client, recdata);//对收到的数据进行处理ns.BeginRead(client.buffer, 0, client.buffer.Length, new AsyncCallback(TCPCallBack), client); //继续接收该客户端发来的数据
                    }else{client.DisConnect();lstClient.Remove(client);BindLstClient();}}}catch (IOException ex){//远程连接已经断开    无法从传输连接中读取数据KillMessageBox killbox = new KillMessageBox();killbox.StartKiller();MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); 　　 //ex = {"无法从传输连接中读取数据: 远程主机强迫关闭了一个现有的连接。。"}}  }

        // yy 定时器中断函数void TimerHander(object source, ElapsedEventArgs e){try{bool AllTestDeviceBreakWarm = false;if (TestlstClient.Count > 0){bool IsSendOK = true;List<LeafTCPClient> WaitRemove = new List<LeafTCPClient>();foreach (LeafTCPClient sclient in TestlstClient){if (sclient.relayon == false){IsSendOK = NewSendData(sclient, openstring);//继电器开
                                }else{IsSendOK = NewSendData(sclient, offstring);//继电器关
                                }if (IsSendOK == false)//命令发送失败，可能远程连接断开
                            {WaitRemove.Add(sclient);}else{ sclient.relayon=!sclient.relayon;}}foreach (LeafTCPClient tclient in WaitRemove)//删除旧的client
                        {tclient.DisConnect();lstClient.Remove(tclient);TestlstClient.Remove(tclient);BindLstClient();//检查下TestlstClient列表都被移除了，count=0if (TestlstClient.Count == 0)AllTestDeviceBreakWarm = true;KillMessageBox killbox = new KillMessageBox();killbox.StartKiller();MessageBox.Show(String.Format("设备{0},{1}断开网络，请检查！", tclient.userid, tclient.deviceid),"错误");}}else{if (AllTestDeviceBreakWarm == true){KillMessageBox killbox = new KillMessageBox();killbox.StartKiller();MessageBox.Show("没有测试的设备与服务器建立连接，请重连","错误");//只提示一次AllTestDeviceBreakWarm = false;}}}catch(Exception ex){MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);     //第3处异常提醒位置  ex = {"集合已修改；可能无法执行枚举操作。"}}}

        public bool NewSendData(LeafTCPClient client, byte[] data){try{//if(client.NetWork.Connected)client.NetWork.GetStream().Write(data, 0, data.Length);//向客户端发送数据return true;}catch (InvalidOperationException ex)//发送数据失败，远程连接异常断开 （如插座断电情况）
            {lstClient.Remove(client);TestlstClient.Remove(client);KillMessageBox killbox = new KillMessageBox();//5分钟后关闭提示窗口
                killbox.StartKiller();MessageBox.Show("设备" + client.userid + "," + client.deviceid + ":" + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);    //这里第二处窗口提示  ex = {"不允许对非连接的套接字执行此操作。"}return false;}catch (Exception ex){KillMessageBox killbox = new KillMessageBox();//5分钟后关闭提示窗口
                killbox.StartKiller();MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);return false;}  }