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| using System; using System.Collections.Generic; using System.Text; using System.Net.Sockets; using Server.Commands; using Server.Utility;
namespace Server.TcpIP {
internal class Client {
#region private Members
private Socket m_ClientSocket; private AsyncCallback m_AsyncCallbackFunction; private static readonly log4net.ILog Logger = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
private string m_IP; private string m_receivedData = String.Empty;
#endregion
#region Properties
public Socket ClientSocket { get { return m_ClientSocket; } set { m_ClientSocket = value; } }
public AsyncCallback AsyncCallbackFunction { get { return m_AsyncCallbackFunction; } set { m_AsyncCallbackFunction = value; } }
public string IP { get { return m_IP; } }
#endregion
#region Constructor and Singleton Instance Function
internal Client(Socket sock) { m_ClientSocket = sock; m_IP = sock.RemoteEndPoint.ToString(); Processing.ProcessHandler.Instance.DistanceReadReadyEvent += new Server.Processing.DistanceReadReady(Instance_DistanceReadReadyEvent); Processing.ProcessHandler.Instance.CamReadyEvent += new Server.Processing.CamReady(Instance_CamReadyEvent); Processing.ProcessHandler.Instance.MarkingReadyEvent += new Server.Processing.MarkingReady(Instance_MarkingReadyEvent); Processing.ProcessHandler.Instance.ErrorOccuredEvent += new Server.Processing.ErrorOccured(Instance_ErrorOccuredEvent); Processing.ProcessHandler.Instance.SwitchOnLightEvent += new Server.Processing.SwitchOnLight(Instance_SwitchOnLightEvent); CommandFactory.Instance.CommandErrorEvent += new CommandError(Instance_CommandErrorEvent);
}
void Instance_SwitchOnLightEvent(int situation) { }
#endregion
#region private Functions
public void WaitForData() { try {
if (m_AsyncCallbackFunction == null) { this.m_AsyncCallbackFunction = new AsyncCallback(OnDataReceived); }
SocketPacket theSocPkt = new SocketPacket(); theSocPkt.CurrentSocket = this.m_ClientSocket;
this.m_ClientSocket.BeginReceive(theSocPkt.DataBuffer, 0, theSocPkt.DataBuffer.Length, SocketFlags.None, m_AsyncCallbackFunction, theSocPkt);
} catch (SocketException se) {
Logger.Error(se.Message); }
}
private void OnDataReceived(IAsyncResult asyn) { try { SocketPacket socketData = (SocketPacket)asyn.AsyncState;
int iRx = 0; iRx = socketData.CurrentSocket.EndReceive(asyn); char[] chars = new char[iRx + 1]; System.Text.Decoder d = System.Text.Encoding.UTF8.GetDecoder(); int charLen = d.GetChars(socketData.DataBuffer, 0, iRx, chars, 0); System.String szData = new System.String(chars);
if ((m_NewCommandStarted == false)&&(szData.Contains(Utility.Constants.cStartSign))) { m_receivedData = Utility.Constants.cStartSign; m_NewCommandStarted = true; } else m_receivedData += szData[0]; if ( (m_receivedData.EndsWith(Utility.Constants.cEndSign)) && (m_NewCommandStarted)) { m_NewCommandStarted = false; StringBuilder builder = new StringBuilder(m_receivedData); commandReceived(builder.ToString()); m_receivedData = String.Empty;
}
WaitForData(); } catch (ObjectDisposedException) { System.Diagnostics.Debugger.Log(0, "1", "\nOnDataReceived: Socket has been closed\n"); } catch (SocketException se) { Logger.Error(se.Message); } }
private bool m_NewCommandStarted = false;
private void commandReceived(string receivedCommandString) {
Logger.Error("********************************************************"); string commandString = receivedCommandString.Replace("\0",""); commandString = commandString.Replace(" ", "");
Logger.Error("Command received'n'cut : [" + commandString + "]"); Logger.Error("********************************************************");
if (receivedCommandString.Equals(Constants.cConnectedCommandReceive)) { this.sendData(Constants.cConnectedCommandAnswer); return; }
if (receivedCommandString.Equals(Constants.cLampCommandReceive)) { return; }
CommandFactory.Instance.newCommandReceived(commandString, this.m_IP);
}
private void Instance_DistanceReadReadyEvent(Server.Processing.ProcessItem pi) {
string answer = createStationAnswerCommand(pi, String.Empty); sendData(answer); }
void Instance_MarkingReadyEvent(Server.Processing.ProcessItem pi) { string answer = createStationAnswerCommand(pi, String.Empty); sendData(answer); }
void Instance_CamReadyEvent(Server.Processing.ProcessItem pi) { string answer = createStationAnswerCommand(pi, String.Empty); sendData(answer); }
void Instance_ErrorOccuredEvent(Server.Processing.ProcessItem pi, string station) { return; string answer = createStationAnswerCommand(pi, station); sendData(answer);
}
void Instance_CommandErrorEvent(int errorCode) { return; string answer = Constants.cStartSign + "0" + Constants.cDelimiter +Constants.cError +Constants.cDelimiter + errorCode + Constants.cEndSign; sendData(answer);
}
private string createStationAnswerCommand(Server.Processing.ProcessItem pi, String errorStation) { string answer = Constants.cStartSign; if (pi == null) {
answer = answer + "0"; answer = answer + Constants.cDelimiter; answer = answer + errorStation; answer = answer + Constants.cDelimiter; answer = answer + "0"; } else {
answer = answer + pi.ID; answer = answer + Constants.cDelimiter; if (pi.ProcessState.Equals(Processing.ProcessStates.EmptyWTDetected)) {
answer = answer + pi.StationCommand.Station; answer = answer + Constants.cDelimiter; if (pi.StationCommand.Station.Equals(Constants.cDistance)) answer = answer + Constants.cEmptyWT; else answer = answer + "0"; } else if (pi.ProcessState.Equals(Processing.ProcessStates.ErrorOccured)) { answer = answer + errorStation; answer = answer + Constants.cDelimiter; answer = answer + pi.ErrorCode.ToString(); } else { answer = answer + pi.StationCommand.Station; answer = answer + Constants.cDelimiter; answer = answer + "0"; }
} answer = answer + Constants.cEndSign; return answer;
}
private bool m_SendToSPSLock = false;
private void sendData(string data) { try { while (m_SendToSPSLock) { System.Threading.Thread.Sleep(200); }
m_SendToSPSLock = true;
Object objData = data; byte[] byData = System.Text.Encoding.ASCII.GetBytes(objData.ToString()); m_receivedData = String.Empty; try { m_ClientSocket.Send(byData); Logger.Info("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); Logger.Info("Data send to SPS: [" + data+"]"); Logger.Info(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); } catch (Exception e) { Logger.Error("Client disconnected: "+e.Message); } } finally { m_SendToSPSLock = false; }
} #endregion
#region public Functions
#endregion
} } |