/// <summary>
/// when Client Try to connect server
/// </summary>
/// <param name="o"></param>
private void Acceptor(IAsyncResult o)
{
TcpListener server = o.AsyncState as TcpListener;
try
{
PLCClient newClient = new PLCClient();
newClient.NetWork = server.EndAcceptTcpClient(o);
lstClient.Add(newClient);
LogerHelper2.ToLog("Robot PLC " + newClient.Name + " is connected now.", 0);
RobotPLCStatus.UpdateRobotPLCStatus("Connected");
isPLConLine = true;
newClient.NetWork.GetStream().BeginRead(newClient.buffer, 0, newClient.buffer.Length, new AsyncCallback(TCPCallBack), newClient);
server.BeginAcceptTcpClient(new AsyncCallback(Acceptor), server);//continue listening
//send F999 to active PLC QueryMessageListAndRunFirstMessage("DUTSTATUS");
byte[] tempdata = Encoding.ASCII.GetBytes("F999");
MessageReceived.BeginInvoke("", MainPLCMessage.ConvertByteToMessage(tempdata), null, null);//async data output
//Server. QueryMessageListAndRunFirstMessage("DUTSTATUS");
}
catch (Exception ex)
{
LogerHelper2.ToLog("test method PLCServers.Acceptor catch exception" + ex.Message, 3);
}
}
static public MainPLCMessage ConvertByteToMessage(byte[] data)
{
MainPLCMessage plcmessage = new MainPLCMessage();
try
{
plcmessage = new MainPLCMessage(data);
}
catch (Exception e)
{
plcmessage.InvalidMessage = true;
plcmessage.Info = new ASCIIEncoding().GetString(data);
}
return(plcmessage);
}
/// <summary>
/// PLC Client send message to server
/// </summary>
/// <param name="ar"></param>
private void TCPCallBack(IAsyncResult ar)
{
PLCClient client = (PLCClient)ar.AsyncState;
try
{
if (client.NetWork.Connected)
{
NetworkStream ns = client.NetWork.GetStream();
byte[] recdata = new byte[ns.EndRead(ar)];
if (recdata.Length > 0)
{
Array.Copy(client.buffer, recdata, recdata.Length);
if (MessageReceived != null)
{
MessageReceived.BeginInvoke(client.Name, MainPLCMessage.ConvertByteToMessage(recdata), null, null);//async data output
}
ns.BeginRead(client.buffer, 0, client.buffer.Length, new AsyncCallback(TCPCallBack), client);
}
else
{
client.DisConnect();
LogerHelper2.ToLog("plc is disconnected now", 2);
plcHeartBeatTimer.Stop();
RobotPLCStatus.UpdateRobotPLCStatus("Disconnected");
isPLConLine = false;
lstClient.Remove(client);
}
}
}
catch (Exception ex)
{
LogerHelper2.ToLog("testmothod TCPCallBack catch exception " + ex.Message, 3);
RobotPLCStatus.UpdateRobotPLCStatus("Disconnected");
plcHeartBeatTimer.Stop();
client.DisConnect();
isPLConLine = false;
lstClient.Remove(client);
}
}