private void CallbackTRACEDONE(object state, bool timedOut)
{
if (_POLLDATA.HandleWAIT != null)
{
_POLLDATA.HandleWAIT.Unregister(null); _POLLDATA.HandleWAIT = null;
} // Stop future execution of the callback method
if (_POLLDATA.HandleDONE != null)
{
_POLLDATA.HandleDONE.Unregister(null); _POLLDATA.HandleDONE = null;
} // Stop future execution of the callback method
if (timedOut && OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception("Capture Failed! Timed Out."));
}
else
{
byte[] data = _POLLDATA.GetDataQ();
// throw event
if (OnTraceDataIn.GetInvocationList().Length > 0)
{
OnTraceDataIn(this, data);
}
}
}
private void DisconnectCallback(IAsyncResult ar)
{
// Retrieve the socket from the state object.
Socket socket = (Socket)ar.AsyncState;
try
{
// Complete the disconnect.
socket.EndDisconnect(ar);
}
catch (Exception exc)
{
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, exc);
}
}
// Signal that the disconnect is complete.
_disconnectDone.Set();
// Bubble the event
if (OnDisconnected.GetInvocationList().Length > 0)
{
OnDisconnected(this, _socket.Connected);
}
}
private void SendCallback(IAsyncResult ar)
{
// Retrieve the state object and the client socket from the asynchronous state object.
StateObject state = (StateObject)ar.AsyncState;
try
{
// Complete sending the data to the remote device.
int bytesSent = state.WorkSocket.EndSend(ar);
// Signal that all bytes have been sent.
_sendDone.Set();
// Bubble the event
if (OnDataSent.GetInvocationList().Length > 0)
{
OnDataSent(this, state.TextSent);
}
}
catch (Exception exc)
{
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, exc);
}
}
}
private void CallbackHARTBEAT(object state, bool timedOut)
{
if (_RESPONSE.Handle != null)
{
_RESPONSE.Handle.Unregister(null); _RESPONSE.Handle = null;
} // Stop future execution of the callback method
if (timedOut && OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception("HARTBEAT: Timed Out."));
}
else
{
if (_RESPONSE.Text.StartsWith("GOOD") && _RESPONSE.Text.EndsWith("GOOD"))
{
_utcOffset = Convert.ToInt32(_RESPONSE.Text.Substring(4, 8), 16);
log.Info("Ready to capture data.");
}
else if (_RESPONSE.Text.StartsWith("FAIL"))
{
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception("HARTBEAT: " + _RESPONSE.Text));
}
}
}
}
private void ConnectCallback(IAsyncResult ar)
{
// Retrieve the state object and socket from the state object.
StateObject state = (StateObject)ar.AsyncState;
try
{
// Complete the connection.
state.WorkSocket.EndConnect(ar);
// Wait for data to arrive.
Receive(_bufferSize);
}
catch (Exception exc)
{
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, exc);
}
}
// Signal that the connection attempt is complete.
_connectDone.Set();
// Bubble the event
if (OnConnected.GetInvocationList().Length > 0)
{
OnConnected(this, _socket.Connected);
}
}
private void CallbackCHECKDATA(object state, bool timedOut)
{
log.DebugFormat("CHECKDATA [Expected={0}, Received={1}]", _POLLDATA.BytesExpected, _POLLDATA.BytesReceived);
if (_POLLDATA.BytesExpected > 0 && _POLLDATA.BytesExpected == _POLLDATA.BytesReceived)
{
_eventTRACEDONE.Set();
}
else if (_POLLDATA.BytesExpected < _POLLDATA.BytesReceived)
{
if (_POLLDATA.HandleWAIT != null)
{
_POLLDATA.HandleWAIT.Unregister(null); _POLLDATA.HandleWAIT = null;
} // Stop future execution of the callback method
if (_POLLDATA.HandleDONE != null)
{
_POLLDATA.HandleDONE.Unregister(null); _POLLDATA.HandleDONE = null;
} // Stop future execution of the callback method
_POLLDATA.ClearQs();
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception(string.Format(
"Data Overflow [Expected={0}, Received={1}]", _POLLDATA.BytesExpected, _POLLDATA.BytesReceived)));
}
}
//check for more data every... msRecheckData
}
private void CallbackOPENDATA(object state, bool timedOut)
{
if (_RESPONSE.Handle != null)
{
_RESPONSE.Handle.Unregister(null); _RESPONSE.Handle = null;
} // Stop future execution of the callback method
if (timedOut && OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception("OPENDATA: Timed Out."));
}
else
{
if (_RESPONSE.Text.StartsWith("GOOD") && _RESPONSE.Text.EndsWith("GOOD"))
{
// Try to connect to the data port
int dataport = Convert.ToInt32(_RESPONSE.Text.Substring(4, 8), 16);
var endpoint = SVSEUtility.CreateIPEndpoint(_socketComm.RemoteIPAddress.ToString(), dataport);
_socketData.Connect(endpoint);
}
else if (_RESPONSE.Text.StartsWith("FAIL"))
{
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception("OPENDATA: " + _RESPONSE.Text));
}
}
}
}
void socketData_OnDisconnected(object sender, bool connected)
{
if (connected && OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception("Failed to disconnect on command port."));
}
}
void socketData_OnError(object sender, Exception exc)
{
// Bubble the event
if (OnError.GetInvocationList().Length > 0)
{
OnError(sender, exc);
}
}
void socketComm_OnError(object sender, Exception exc)
{
// throw event
if (OnError.GetInvocationList().Length > 0)
{
OnError(sender, exc);
}
}
public void Startup(string host, int port, string userId, string password)
{
_userId = userId.Trim();
_password = password.Trim();
try
{
var endpoint = SVSEUtility.CreateIPEndpoint(host.Trim(), port, out _ipAddress);
_socketComm.Connect(endpoint);
}
catch (Exception exc)
{
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, exc);
}
}
}
/// <summary>
/// Invokes the error event.
/// </summary>
/// <param name="exception">Exception.</param>
internal void InvokeOnError(Exception exception)
{
if (OnError == null || exception == null)
{
return;
}
try
{
var members = OnError.GetInvocationList().Cast <Func <Exception, Task> >();
Task.WhenAll(members.Select(x => x(exception)));
//.Wait(0);
}
catch (Exception ex) when(ex.InnerException is TaskCanceledException)
{
}
}
/// <summary>
/// Starts monitoring table's content changes.
/// </summary>
/// <param name="timeOut">The WAITFOR timeout in seconds.</param>
/// <param name="watchDogTimeOut">The WATCHDOG timeout in seconds.</param>
/// <returns></returns>
public override void Start(int timeOut = 120, int watchDogTimeOut = 180)
{
if (timeOut < 60)
{
throw new ArgumentException("timeOut must be greater or equal to 60 seconds");
}
if (watchDogTimeOut < 60 || watchDogTimeOut < (timeOut + 60))
{
throw new WatchDogTimeOutException("watchDogTimeOut must be at least 60 seconds bigger then timeOut");
}
if (_task != null)
{
return;
}
if (OnChanged == null)
{
throw new NoSubscriberException();
}
var onChangedSubscribedList = OnChanged?.GetInvocationList();
var onErrorSubscribedList = OnError?.GetInvocationList();
var onStatusChangedSubscribedList = OnStatusChanged?.GetInvocationList();
NotifyListenersAboutStatus(onStatusChangedSubscribedList, TableDependencyStatus.Starting);
_disposed = false;
CreateOrReuseConversation(timeOut, watchDogTimeOut);
_cancellationTokenSource = new CancellationTokenSource();
_task = Task.Factory.StartNew(() =>
WaitForNotifications(
_cancellationTokenSource.Token,
onChangedSubscribedList,
onErrorSubscribedList,
onStatusChangedSubscribedList,
timeOut,
watchDogTimeOut),
_cancellationTokenSource.Token);
WriteTraceMessage(TraceLevel.Info, "Waiting for receiving " + _tableName + "'s records change notifications.", (Exception)null);
}
private void CallbackLOGIN(object state, bool timedOut)
{
if (_RESPONSE.Handle != null)
{
_RESPONSE.Handle.Unregister(null); _RESPONSE.Handle = null;
} // Stop future execution of the callback method
if (timedOut && OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception("LOGIN: Timed Out."));
}
else
{
if (_RESPONSE.Text.StartsWith("GOOD") && _RESPONSE.Text.EndsWith("GOOD"))
{
//open the data port
SendPollCommand(SVSECommands.OPENDATA);
}
else
{
string loginMess = "Login failed! ";
switch (_RESPONSE.Text.Substring(4, 8))
{
case "LGINSAIN":
loginMess += "User already logged in.";
break;
case "LGINALGI":
loginMess += "User already logged in.";
break;
default:
loginMess += _RESPONSE.Text.Substring(4, 8);
break;
}
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception(loginMess));
}
}
}
}
private void ReceiveCallback(IAsyncResult ar)
{
// Retrieve the state object and the client socket from the asynchronous state object.
StateObject state = (StateObject)ar.AsyncState;
try
{
// Read data from the remote device.
int bytesRead = state.WorkSocket.EndReceive(ar);
if (bytesRead == 0)
{
// Socket Shutdown is complete, so lets disconnect
_socket.BeginDisconnect(true,
new AsyncCallback(DisconnectCallback), _socket);
_disconnectDone.WaitOne();
return;
}
if (EOL != null)
{
string rcvd = Encoding.ASCII.GetString(state.DataRcvd, 0, bytesRead);
if (state.TextRcvd == null)
{
state.TextRcvd = new StringBuilder();//...this must be the first receive
}
state.TextRcvd.Append(rcvd);
if (rcvd.EndsWith(EOL))
{
// Signal that all bytes have been received.
_receiveDone.Set();
}
// Bubble the event
if (OnDataIn.GetInvocationList().Length > 0)
{
OnDataIn(this, state.DataRcvd);
}
}
else
{
// Get the actual data received, and put it into a dynamically sized buffer
byte[] buffer = new byte[bytesRead];
Buffer.BlockCopy(state.DataRcvd, 0, buffer, 0, bytesRead);
// Clear the buffer
state.DataRcvd = new byte[state.BufferSize];
// Bubble the event
OnDataIn(this, buffer);
}
// Wait for more data
Receive(_bufferSize);
}
catch (Exception exc)
{
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, exc);
}
}
}
public static void ClearListeners()
{
try
{
if (OnDebug != null)
{
foreach (Delegate invoker in OnDebug.GetInvocationList())
{
OnDebug -= (LogEventHandler)invoker;
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
try
{
if (OnError != null)
{
foreach (Delegate invoker in OnError.GetInvocationList())
{
OnError -= (LogEventHandler)invoker;
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
try
{
if (OnFatal != null)
{
foreach (Delegate invoker in OnFatal.GetInvocationList())
{
OnFatal -= (LogEventHandler)invoker;
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
try
{
if (OnInfo != null)
{
foreach (Delegate invoker in OnInfo.GetInvocationList())
{
OnInfo -= (LogEventHandler)invoker;
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
try
{
if (OnVerbose != null)
{
foreach (Delegate invoker in OnVerbose.GetInvocationList())
{
OnVerbose -= (LogEventHandler)invoker;
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
try
{
if (OnWarn != null)
{
foreach (Delegate invoker in OnWarn.GetInvocationList())
{
OnWarn -= (LogEventHandler)invoker;
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
/// <summary>
/// Send the next poll command and register wait handles
/// </summary>
/// <param name="COMMAND"></param>
private void SendPollCommand(SVSECommands COMMAND)
{
_currCommand = COMMAND;
string CmdTxt = "";
switch (COMMAND)
{
case SVSECommands.LOGIN:
CmdTxt = String.Format("LOGIN {0} {1}", _userId, _password) + "\n";
_RESPONSE.Handle = ThreadPool.RegisterWaitForSingleObject(
_eventRESPONSE, //Register Wait Handle
new WaitOrTimerCallback(CallbackLOGIN), //Delegate/method to call when signaled
COMMAND, //Object passed to the delegate
msResponseTimeout, //Timeout
true);
break;
case SVSECommands.OPENDATA:
string verStr = "010500";
CmdTxt = "OPENDATA " + verStr + "\n";
_RESPONSE.Handle = ThreadPool.RegisterWaitForSingleObject(
_eventRESPONSE, //Register Wait Handle
new WaitOrTimerCallback(CallbackOPENDATA), //Delegate/method to call when signaled
COMMAND, //Object passed to the delegate
msResponseTimeout, //Timeout
true);
break;
case SVSECommands.HARTBEAT:
CmdTxt = COMMAND.ToString() + "\n";
_RESPONSE.Handle = ThreadPool.RegisterWaitForSingleObject(
_eventRESPONSE, //Register Wait Handle
new WaitOrTimerCallback(CallbackHARTBEAT), //Delegate/method to call when signaled
COMMAND, //Object passed to the delegate
msResponseTimeout, //Timeout
true);
break;
case SVSECommands.TRACIP01:
CmdTxt = "GETDATA " + COMMAND.ToString() + "\n";
_POLLDATA.HandleDONE = ThreadPool.RegisterWaitForSingleObject(
_eventTRACEDONE, //Register Wait Handle
new WaitOrTimerCallback(CallbackTRACEDONE), //Delegate/method to call when signaled
COMMAND, //Object passed to the delegate
msTraceTimeout, //Timeout
true);
break;
default:
//This should never happen...
CmdTxt = "GETDATA " + COMMAND.ToString() + "\n";
break;
}
if (_socketComm.Connected)
{
_socketComm.Send(CmdTxt, 17);
}
else if (OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception(string.Format(
"Couldn't send command (connection unavailable): {0}", COMMAND)));
}
}
void socketComm_OnDataIn(object sender, byte[] data)
{
string text = Encoding.ASCII.GetString(data);
_RESPONSE.Text = text.Substring(0, 16);//remove the CRLF
log.InfoFormat("Rcvd: {0}", _RESPONSE.Text);
if (_RESPONSE.Handle != null) //LOGIN, OPENDATA, HARTBEAT
{
_eventRESPONSE.Set(); //Execute the waiting method
}
else if (text.StartsWith("FAIL")) //Capture Failed
{
if (_POLLDATA.HandleWAIT != null)
{
_POLLDATA.HandleWAIT.Unregister(null); _POLLDATA.HandleWAIT = null;
} // Stop future execution of the callback method
if (_POLLDATA.HandleDONE != null)
{
_POLLDATA.HandleDONE.Unregister(null); _POLLDATA.HandleDONE = null;
} // Stop future execution of the callback method
_POLLDATA.ClearQs();
string description = "Capture failed! ";
switch (text)
{
case "FAILTRACTDNZFAIL": description += "The buffer is not full.";
break;
default: description += text;
break;
}
if (OnError.GetInvocationList().Length > 0)
{
OnError(this, new Exception(description));
}
}
else
{ //Capture Succeeded
if (text.Substring(8, 4) == "DONE")
{
// The server has finished sending data but it is possible that we
// have not received it all on the data port, so this will cause the
// callback method to run periodically until all the data is received
_POLLDATA.HandleWAIT = ThreadPool.RegisterWaitForSingleObject(
_eventCHECKDATA, //Register Wait Handle
new WaitOrTimerCallback(CallbackCHECKDATA), //Delegate/method to call when signaled
null, //Object passed to the delegate
msRecheckData, //Timeout
false);
_eventCHECKDATA.Set();//Check now
}
else
{ //Store the response
SVSEResponse response = new SVSEResponse();
response.Text = _currCommand.ToString();
response.Count = Convert.ToInt32(text.Substring(4, 4), 10);
response.Length = Convert.ToInt32(text.Substring(8, 4), 10);
_POLLDATA.GoodQ.Enqueue(response);
}
}
}
