public byte[] ReceiveResponsePacket()
{
int start = Environment.TickCount;
int myTimeout = RECEIVE_RESPONSE_TIMEOUT;
if (!_masterMode)
{
myTimeout = Timeout.Infinite;
}
while (NetworkTpdu.CreateFromBuffer(_receiveBuffer, false) == null && (!_masterMode || Environment.TickCount - start < myTimeout))
{
_receiveBuffer.WaitForByte(myTimeout, false);
}
NetworkTpdu responseTpdu = NetworkTpdu.CreateFromBuffer(_receiveBuffer, true);
if (responseTpdu != null)
{
_log.Debug("Received TPDU: {0}", ByteHelpers.ByteToString(responseTpdu.GetTPDUData()));
}
if (responseTpdu == null)
{
return(null);
}
else
{
return(responseTpdu.GetAPDUData());
}
}
public void WriteXml(XmlElement rootNode)
{
XmlHelper.WriteString(rootNode, "RawData", ByteHelpers.ByteToString(_rawApduData));
BCDNumberParameter receiptNr = this.FindParameter <BCDNumberParameter>(StatusInformationApdu.StatusParameterEnum.ReceiptNr);
if (receiptNr != null)
{
XmlHelper.WriteInt64(rootNode, "ReceiptNr", receiptNr.DecodeNumber());
}
PrefixedParameter <AsciiLVarParameter> additional = this.FindParameter <PrefixedParameter <AsciiLVarParameter> >(StatusInformationApdu.StatusParameterEnum.AdditionalCardDataForECCash);
if (additional != null)
{
XmlHelper.WriteString(rootNode, "Additional", additional.SubParameter.Text);
}
PrefixedParameter <StatusPanEfId> panefid = this.FindParameter <PrefixedParameter <StatusPanEfId> >(StatusInformationApdu.StatusParameterEnum.PanEfId);
if (panefid != null)
{
XmlHelper.WriteString(rootNode, "PanEfid", panefid.SubParameter.DecodeNumberAsString());
}
PrefixedParameter <BCDNumberParameter> amount = this.FindParameter <PrefixedParameter <BCDNumberParameter> >(StatusInformationApdu.StatusParameterEnum.Amount);
if (amount != null)
{
XmlHelper.WriteInt64(rootNode, "Amount", amount.SubParameter.DecodeNumber());
}
PrefixedParameter <AsciiLVarParameter> additionalInfo = this.FindParameter <PrefixedParameter <AsciiLVarParameter> >(StatusInformationApdu.StatusParameterEnum.AdditionalTextForCC);
if (additionalInfo != null)
{
XmlHelper.WriteString(rootNode, "AdditionalInfo", additionalInfo.SubParameter.Text);
}
}
public byte[] ReceiveResponsePacket()
{
int start = Environment.TickCount;
int myTimeout = RECEIVE_RESPONSE_TIMEOUT;
if (!_masterMode)
{
myTimeout = MASTER_RESPONES_TIMEOUT;
}
int waitTimeLeft = -1;
while (NetworkTpdu.CreateFromBuffer(_receiveBuffer, false) == null && (Environment.TickCount - start < myTimeout))
{
if (waitTimeLeft < 1)
{
_receiveBuffer.WaitForByte(myTimeout, false);
}
else
{
_receiveBuffer.WaitForByte(waitTimeLeft, false);
}
/*
* the waitTimeLeft variable is used if one waitForByte call does not wait for the full timeout duration
* Without the waitTimeLeft variable the system would try to wait another full timeout duration instead of
* the time left.
*/
waitTimeLeft = myTimeout - (Environment.TickCount - start);
}
NetworkTpdu responseTpdu = NetworkTpdu.CreateFromBuffer(_receiveBuffer, true);
if (responseTpdu != null)
{
_log.Debug("Received TPDU: {0}", ByteHelpers.ByteToString(responseTpdu.GetTPDUData()));
}
if (responseTpdu == null)
{
throw new ConnectionTimeOutException();
}
else
{
return(responseTpdu.GetAPDUData());
}
}
/// <summary>
/// Transmits one tpdu and sends the NAK or ACK
/// </summary>
/// <param name="tpduData"></param>
/// <returns></returns>
private void SafeTransmit(byte[] tpduData)
{
int transmitCounter = 0;
bool transmitSucceded = false;
while (transmitCounter <= MAX_BLOCKREPEATS && !transmitSucceded)
{
_log.Debug("Sending transmitCounter={1}: {0}", ByteHelpers.ByteToString(tpduData), transmitCounter);
//Write Data to the serial port
_serialPort.SendData(tpduData, 0, tpduData.Length);
//Read NAK or ACK or something else ;)
byte?statusByte = null;
statusByte = _buffer.WaitForByte(BLOCK_TIMEOUT, true);
if (statusByte != null && statusByte == ACK)
{
transmitSucceded = true;
return;
}
else
{
_log.Debug("TPDU transmission failed, increasing transmitCounter to '{0}'", transmitCounter + 1);
transmitCounter++;
}
}
if (transmitSucceded == false)
{
_log.Debug("TPDU transmission failed {0}-times, reporting error to application layer", transmitCounter);
throw new RS232TransportException(string.Format("TPDU transmission failed {0}-times, reporting error to application layer", transmitCounter));
}
else
{
//Should never get here
Debug.Assert(false);
throw new InvalidOperationException("Transmission succeeded but no data");
}
}
public void Transmit(IZvtTpdu tpdu)
{
byte[] data = tpdu.GetTPDUData();
_log.Debug("Transmitting TPDU: {0}", ByteHelpers.ByteToString(data));
_client.GetStream().Write(data, 0, data.Length);
}
/// <summary>
/// Waits for a complete TPDU frame, checks the checksum and sends the ACK, NAK
/// </summary>
/// <returns></returns>
private byte[] ReceiveTpduFrame()
{
bool frameComplete = false;
List <byte> frameData = new List <byte>();
//Time measurement, the receive of a whole Frame should not exceed BLOCK_TIMEOUT
int startTick = Environment.TickCount;
ReceiveStates currentState = ReceiveStates.WaitForStartingDLE;
int myTimeout = RECEIVE_RESPONSE_TIMEOUT;
if (!_masterMode)
{
myTimeout = MASTER_RESPONES_TIMEOUT;
}
while (!frameComplete && (!_masterMode || Environment.TickCount - startTick < RECEIVE_RESPONSE_TIMEOUT))
{
//For the first [DLE] the timeout is BLOCK_TIMEOUT, after the DLE was received
//only BYTE_TIMEOUT is allowed during the bytes
byte?myByte = _buffer.WaitForByte(myTimeout, true);
//A Timeout occured, set state to error state and send nak
if (myByte == null)
{
_log.Debug("ReceiveTpduFrame: timeout occured, going into error state");
frameComplete = true;
currentState = ReceiveStates.Error;
continue;
}
if (currentState != ReceiveStates.WaitForStartingDLE)
{
frameData.Add(myByte.Value);
}
//Simple Statemachine implementation see ReceiveStates for possible state transitions
if (currentState == ReceiveStates.WaitForStartingDLE && myByte.Value == RS232Tpdu.DLE)
{
frameData.Add(myByte.Value);
currentState = ReceiveStates.WaitForSTX;
}
else if (currentState == ReceiveStates.WaitForSTX && myByte.Value == RS232Tpdu.STX)
{
currentState = ReceiveStates.APDUData;
}
else if (currentState == ReceiveStates.WaitForSTX)
{
_log.Debug("ReceiveTpduFrame: No STX after DLE, resetting and waiting for DLE");
currentState = ReceiveStates.WaitForStartingDLE;
frameData.Clear();
}
else if (currentState == ReceiveStates.APDUData && myByte.Value == RS232Tpdu.DLE)
{
currentState = ReceiveStates.WaitForDoubleDLE;
}
else if (currentState == ReceiveStates.WaitForDoubleDLE && myByte.Value == RS232Tpdu.DLE)
{
currentState = ReceiveStates.APDUData;
}
else if (currentState == ReceiveStates.WaitForDoubleDLE && myByte.Value == RS232Tpdu.ETX)
{
currentState = ReceiveStates.WaitForCRCLow;
}
else if (currentState == ReceiveStates.WaitForDoubleDLE)
{
_log.Debug("ReceiveTpduFrame: Invalid byte after DLE, received {0:X2}", myByte.Value);
frameComplete = true;
currentState = ReceiveStates.Error;
}
else if (currentState == ReceiveStates.WaitForCRCLow)
{
currentState = ReceiveStates.WaitForCRCHigh;
}
else if (currentState == ReceiveStates.WaitForCRCHigh)
{
_log.Debug("ReceiveTpduFrame: {0}", ByteHelpers.ByteToString(frameData.ToArray()));
frameComplete = true;
currentState = ReceiveStates.Completed;
}
}
if (currentState == ReceiveStates.Completed)
{
return(frameData.ToArray());
}
else
{
return(null);
}
}
public void WriteXml(XmlElement rootNode)
{
XmlHelper.WriteString(rootNode, "RawData", ByteHelpers.ByteToString(_rawApduData));
}