private IFiscalResponse _SendMessage(IWrappedMessage msg, Func <byte[], IFiscalResponse> responseFactory)
{
IFiscalResponse response = null;
byte[] lastStatusBytes = null;
var packet = msg.GetBytes(_sequence);
for (var r = 0; r < 3; r++)
{
try
{
_port.Write(packet, 0, packet.Length);
var list = new List <byte>();
while (ReadByte())
{
var b = _queue.Dequeue();
if (b == 22)
{
continue;
}
if (b == 21)
{
throw new IOException("Invalid packet checksum or form of messsage.");
}
list.Add(b);
}
list.Add(_queue.Dequeue());
var buffer = list.ToArray();
response = responseFactory(buffer);
lastStatusBytes = list.Skip(list.IndexOf(0x04) + 1).Take(6).ToArray();
break;
}
catch (Exception)
{
if (r >= 2)
{
throw;
}
}
}
_sequence += 1;
if (_sequence > 254)
{
_sequence = 32;
}
if (msg.Command != 74)
{
checkStatusOnErrors(lastStatusBytes);
}
return(response);
}
public IFiscalResponse SendMessage(IWrappedMessage msg, Func <byte[], IFiscalResponse> responseFactory, int sequence)
{
IFiscalResponse response = null;
byte[] lastStatusBytes = null;
var packet = msg.GetBytes(sequence);
for (var r = 0; r < 3; r++)
{
try
{
_serialPort.Write(packet, 0, packet.Length);
var list = new List <byte>();
while (ReadByte())
{
var b = _queue.Dequeue();
if (b == 22)
{
continue;
}
if (b == 21)
{
throw new IOException("Invalid packet checksum or form of messsage.");
}
list.Add(b);
}
list.Add(_queue.Dequeue());
var buffer = list.ToArray();
response = responseFactory(buffer);
lastStatusBytes = list.Skip(list.IndexOf(0x04) + 1).Take(6).ToArray();
break;
}
catch (Exception)
{
if (r >= 2)
{
throw;
}
_queue.Clear();
}
}
if (msg.Command != 74)
{
Helpers.ThrowErrorOnBadStatus.Check(lastStatusBytes);
}
return(response);
}