public IAsyncResult BeginProcess(ATFrame frame, bool waitResponse, int timeout, AsyncCallback callback, Object state)
{
lock (this.syncRoot)
{
lock (this.waitingLock)
{
this.waitingEcho = this.echoEnabled;
this.waitingResponse = waitResponse;
this.waitingTimeout = Environment.TickCount + timeout;
this.waitingCommand = frame.Command;
this.waitingCommandType = frame.CommandType;
this.waitingCallback = callback;
this.waitingAsyncResult = WaitingAsyncResult.GetInstance();
this.waitingAsyncResult.AsyncState = state;
}
try
{
this.sendingLength = frame.GetBytes(this.sendingBuffer, 0);
this.stream.Write(this.sendingBuffer, 0, this.sendingLength);
#if (DEBUG)
Debug.Print("Sent frame > ");
Debug.Print(new string(ATParser.Bytes2Chars(this.sendingBuffer, 0, this.sendingLength)));
#endif
return(this.waitingAsyncResult);
}
catch
{
lock (this.waitingLock)
{
this.waitingEcho = false;
this.waitingResponse = false;
}
throw new ATModemException(ATModemError.Generic);
}
}
}
private void ReceiverThreadRun()
{
try
{
while (!this.closed)
{
readBytes = this.stream.Read(this.receivingBuffer, this.receivingBufferIndex + this.receivingBufferCount,
receivingBufferSize - this.receivingBufferIndex - this.receivingBufferCount);
if (readBytes > 0)
{
this.receivingBufferCount += readBytes;
#if (DEBUG)
Debug.Print("ReadBuffer > " + readBytes);
Debug.Print(new string(ATParser.Bytes2Chars(this.receivingBuffer, this.receivingBufferIndex, this.receivingBufferCount)));
#endif
while (this.receivingBufferCount > 0)
{
lock (this.waitingLock)
{
this.parserResult = null;
//Verifico se sono in attesa del comando inviato.
if (this.waitingEcho)
{
//Verifico se è scaduto il timeout di attesa.
if (Environment.TickCount - this.waitingTimeout > 0)
{
this.waitingEcho = false;
}
else
{
//Cerco il comando inviato.
this.frameIndex = ATParser.IndexOfSequence(this.receivingBuffer, this.receivingBufferIndex, this.receivingBufferCount, this.sendingBuffer, 0, this.sendingLength, true);
//Verifico se ho trovato il comando inviato.
if (this.frameIndex != -1)
{
this.waitingEcho = false;
this.waitingEchoEvent.Set();
//Cancello il contenuto del buffer relativo al comando inviato.
movingBytes = this.receivingBufferIndex + this.receivingBufferCount -
this.frameIndex - this.sendingLength;
if (movingBytes > 0)
{
Array.Copy(this.receivingBuffer, this.receivingBufferIndex + this.receivingBufferCount -
movingBytes, this.receivingBuffer, this.frameIndex, movingBytes);
}
this.receivingBufferCount -= this.sendingLength;
}
}
}
//Verifico se sono in attesa di una risposta attesa.
if (this.receivingBufferCount > 0 && this.waitingResponse && !this.waitingEcho)
{
//Verifico se è scaduto il timeout di attesa.
if (Environment.TickCount - this.waitingTimeout > 0)
{
this.waitingResponse = false;
//Verifico se bisogna invocare una callback.
if (this.waitingCallback != null)
{
this.waitingAsyncResult.AsyncException =
new ATModemException(ATModemError.Timeout);
this.waitingCallback(this.waitingAsyncResult);
}
}
else
{
//Eseguo il parse della risposta attesa.
this.parserResult = this.parser.ParseResponse(this.waitingCommand,
this.waitingCommandType, this.receivingBuffer,
this.receivingBufferIndex, this.receivingBufferCount);
if (this.parserResult != null && parserResult.Success)
{
#if (DEBUG)
Debug.Print("ParserResult.Success > " + this.parserResult.Command);
#endif
this.dataLength = this.parserResult.DataLength;
this.dataStream = this.dataLength > 0 ? ATResponseDataStream.GetInstance(this.dataLength) : null;
//Notifico la ricezione della risposta attesa.
this.waitingResponse = false;
this.waitingFrame = ATFrame.GetInstance(parserResult.Command, parserResult.CommandType, this.dataStream, parserResult.Unsolicited, parserResult.Result, parserResult.OutParameters);
this.waitingResponseEvent.Set();
//Verifico se bisogna invocare una callback.
if (this.waitingCallback != null)
{
this.waitingCallback(this.waitingAsyncResult);
}
}
}
}
if (this.receivingBufferCount > 0 && (this.parserResult == null || !parserResult.Success))
{
//Eseguo il parse della risposta non attesa.
this.parserResult = this.parser.ParseUnsolicitedResponse(this.receivingBuffer,
this.receivingBufferIndex, this.receivingBufferCount);
if (this.parserResult != null && parserResult.Success)
{
#if (DEBUG)
Debug.Print("ParserUnsolicitedResult.Success > " + this.parserResult.Command);
#endif
this.dataLength = this.parserResult.DataLength;
this.dataStream = this.dataLength > 0 ? ATResponseDataStream.GetInstance(this.dataLength) : null;
//Notifico la ricezione della risposta non attesa.
if (this.FrameReceived != null)
{
this.FrameReceived(this, ATModemFrameEventArgs.GetInstance(ATFrame.GetInstance(parserResult.Command, parserResult.CommandType, this.dataStream, parserResult.Unsolicited, parserResult.Result, parserResult.OutParameters)));
}
}
}
if (this.parserResult != null && parserResult.Success)
{
this.frameIndex = this.parserResult.Index;
this.frameLength = this.parserResult.Length;
if (this.dataLength > 0)
{
this.dataIndex = this.frameIndex + this.frameLength;
this.dataCount = 0;
this.readDataLength = this.receivingBufferIndex + this.receivingBufferCount - this.dataIndex;
if (this.readDataLength > this.dataLength)
{
this.readDataLength = this.dataLength;
}
if (this.readDataLength > 0)
{
this.dataCount += this.readDataLength;
#if (DEBUG)
Debug.Print("ReadData > " + this.readDataLength + "/" + this.dataCount);
//Debug.Print(new string(ATParser.Bytes2Chars(this.receivingBuffer, this.dataIndex, this.readDataLength)));
#endif
this.dataStream.WriteBuffer(this.receivingBuffer, this.dataIndex, this.readDataLength);
}
//Check if read bytes from the serial port.
if (this.dataCount < this.dataLength)
{
while (this.dataCount < this.dataLength)
{
this.dataTicks = Environment.TickCount;
readBytes = this.stream.Read(this.receivingBuffer, this.frameIndex, receivingBufferSize - this.frameIndex);
this.dataTime = Environment.TickCount - this.dataTicks;
#if (DEBUG)
Debug.Print("ReadDataBuffer > " + readBytes + "/" + this.dataTime);
//Debug.Print(new string(ATParser.Bytes2Chars(this.receivingBuffer, this.frameIndex, readBytes)));
#endif
lock (this.waitingLock)
{
//Verifico se sono in attesa di una risposta o se è scaduto il data timeout.
if (this.dataTime > defaultDataTimeout)
{
this.dataStream.Close();
this.readDataLength = 0;
break;
}
}
this.readDataLength = this.dataLength - this.dataCount;
if (this.readDataLength > readBytes)
{
this.readDataLength = readBytes;
}
this.dataCount += this.readDataLength;
#if (DEBUG)
Debug.Print("ReadData > " + this.readDataLength + "/" + this.dataCount);
//Debug.Print(new string(ATParser.Bytes2Chars(this.receivingBuffer, this.frameIndex, this.readDataLength)));
#endif
this.dataStream.WriteBuffer(this.receivingBuffer, this.frameIndex, this.readDataLength);
}
this.receivingBufferCount += (readBytes - this.frameLength);
this.readDataLength -= this.frameLength;
}
}
else
{
this.readDataLength = 0;
}
//Cancello il contenuto del buffer relativo alla risposta e ai dati.
movingBytes = this.receivingBufferIndex + this.receivingBufferCount -
this.frameIndex - this.frameLength - this.readDataLength;
if (movingBytes > 0)
{
Array.Copy(this.receivingBuffer, this.receivingBufferIndex + this.receivingBufferCount -
movingBytes, this.receivingBuffer, this.frameIndex, movingBytes);
}
this.receivingBufferCount -= (this.frameLength + this.readDataLength);
}
else
{
#if (DEBUG)
Debug.Print("ResponseBuffer > " + this.receivingBufferCount);
Debug.Print(new string(ATParser.Bytes2Chars(this.receivingBuffer, this.receivingBufferIndex, this.receivingBufferCount)));
#endif
if (this.receivingBufferCount == receivingBufferSize)
{
//Cancello il contenuto del buffer.
this.receivingBufferIndex = 0;
this.receivingBufferCount = 0;
}
if (!this.waitingResponse)
{
//Cerco il primo delimitatore.
firstDelimiterIndex = this.parser.IndexOfDelimitor(this.receivingBuffer,
this.receivingBufferIndex, this.receivingBufferCount, true);
if (firstDelimiterIndex != -1)
{
secondDelimiterIndex = firstDelimiterIndex + this.parser.LengthOfDelimitor();
//Cerco il secondo delimitatore.
secondDelimiterIndex = this.parser.IndexOfDelimitor(this.receivingBuffer,
secondDelimiterIndex, this.receivingBufferCount +
this.receivingBufferIndex - secondDelimiterIndex, true);
if (secondDelimiterIndex != -1)
{
if (firstDelimiterIndex == this.receivingBufferIndex)
{
firstDelimiterIndex += this.parser.LengthOfDelimitor();
}
//Cancello il contenuto del buffer fino al primo delimitatore.
this.receivingBufferCount -= (firstDelimiterIndex - this.receivingBufferIndex);
this.receivingBufferIndex = firstDelimiterIndex;
//Continuo l'elaborazione del buffer.
continue;
}
}
}
//Forzo il caricamento del buffer per evitare cicli infiniti.
break;
}
}
}
//Verifico lo stato del buffer.
if (this.receivingBufferCount == 0)
{
this.receivingBufferIndex = 0;
}
else if (this.receivingBufferIndex + this.receivingBufferCount == receivingBufferSize)
{
if (this.receivingBufferIndex == 0)
{
throw new OutOfMemoryException();
}
Array.Copy(this.receivingBuffer, this.receivingBufferIndex,
this.receivingBuffer, 0, this.receivingBufferCount);
this.receivingBufferIndex = 0;
}
}
}
}
catch (Exception exception)
{
Debug.Print("ExceptionResponseBuffer > " + this.receivingBufferCount);
Debug.Print(new string(ATParser.Bytes2Chars(this.receivingBuffer, this.receivingBufferIndex, this.receivingBufferCount)));
exception.ToString();
}
}
public ATFrame Process(ATFrame frame, bool waitResponse, int timeout, AsyncCallback callback)
{
lock (this.syncRoot)
{
if (waitResponse)
{
lock (this.waitingLock)
{
this.waitingEcho = this.echoEnabled;
this.waitingResponse = true;
this.waitingTimeout = Environment.TickCount + timeout;
this.waitingCommand = frame.Command;
this.waitingCommandType = frame.CommandType;
this.waitingCallback = null;
this.waitingEchoEvent.Reset();
this.waitingResponseEvent.Reset();
}
}
try
{
this.sendingLength = frame.GetBytes(this.sendingBuffer, 0);
this.stream.Write(this.sendingBuffer, 0, this.sendingLength);
#if (DEBUG)
Debug.Print("Sent frame > ");
Debug.Print(new string(ATParser.Bytes2Chars(this.sendingBuffer, 0, this.sendingLength)));
#endif
if (this.waitingEcho && !this.waitingEchoEvent.WaitOne(defaultEchoTimeout, true))
{
throw new ATModemException(ATModemError.Timeout);
}
if (!waitResponse)
{
return(null);
}
if (this.waitingResponseEvent.WaitOne(timeout, true))
{
return(this.waitingFrame);
}
throw new ATModemException(ATModemError.Timeout);
}
finally
{
if (waitResponse)
{
lock (this.waitingLock)
{
this.waitingEcho = false;
this.waitingResponse = false;
}
}
}
}
}