/// <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);
}
}
private bool Send(byte[] data, PLCClient client)
{
try
{
client.NetWork.GetStream().Write(data, 0, data.Length);
}
catch (Exception ex)
{
LogerHelper2.ToLog("methond PLCServer.Send catch exception :" + client.Name + ex.Message, 3);
client.DisConnect();
return(false);
}
return(true);
}