private ModbusException HandleIOException(IOException ioe)
{
ModbusException moe;
if (ioe.InnerException is SocketException)
{
SocketException soe = ioe.InnerException as SocketException;
//attenteEnCours = false;
if (soe.ErrorCode == 10060) // Read timed out
{
moe = new ModbusTimeoutException("Expiration du timer d'attente de connexion ou de réponse.", soe);
}
else
{
moe = new ModbusException("Erreur de connexion ou de lecture du Socket.", soe);
}
}
else
{
moe = new ModbusException("IOException innattendue.", ioe);
}
return(moe);
}
private void recevoirReponse()
{
NetworkStream readNws = socket.GetStream();
int nbOctetsALire = 0;
int nbOctetsLus = 0;
int indexFinReponse = 0;
try
{
nbOctetsLus = readNws.Read(tamponReponse, 0, 7);
if (nbOctetsLus > 0)
{
nbOctetsALire = tamponReponse[4] * 256 + tamponReponse[5] - 1;
while ((indexFinReponse < nbOctetsALire) || (nbOctetsLus == 0))
{
nbOctetsLus = readNws.Read(tamponReponse, indexFinReponse + 7, nbOctetsALire - indexFinReponse);
Console.WriteLine("{0} octets lus.", nbOctetsLus);
indexFinReponse += nbOctetsLus;
Thread.Sleep(50); // On laisse un peu de temps pour que la suite de la trame arrive
}
trameReponse = new byte[indexFinReponse + 7];
Buffer.BlockCopy(tamponReponse, 0, trameReponse, 0, indexFinReponse + 7);
}
}
catch (IOException ioe)
{
ModbusException moe = HandleIOException(ioe);
if (!(moe is ModbusTimeoutException))
{
throw moe;
}
}
finally
{
finReception = true;
}
}
