private TelegramType readRxPacket(DataBuffer replyData)
{
string str = "Received packet ( 6 bytes):";
string str2 = "\n\rOK\n\r>";
replyData.NumItems = 0;
while (this._readRxPacketEnabled && (replyData.NumItems < (str.Length * 2)))
{
int num5 = this._ddi.readAppend(this._adtRec.PortAddress.handle, replyData, 1);
if (num5 < 0)
{
replyData.NumItems = 0;
return TelegramType.DeviceFailure;
}
if ((num5 > 0) && (replyData[replyData.NumItems - 1] == 0x3a))
{
break;
}
Thread.Sleep(10);
}
if (replyData.NumItems == 0)
{
return TelegramType.DataAcknowledgeOK;
}
if (replyData[replyData.NumItems - 1] != 0x3a)
{
replyData.objectInfo(true);
replyData.NumItems = 0;
return TelegramType.DeviceFailure;
}
int num3 = replyData.indexOf('(');
if (num3 == -1)
{
replyData.NumItems = 0;
return TelegramType.DataAcknowledgeERROR;
}
int bytesToRead = int.Parse(replyData.objectInfo(num3 + 1, replyData.NumItems - 9, true)) + str2.Length;
replyData.NumItems = 0;
int num4 = 0;
for (int i = 0; (i <= 5) || ((num4 > 0) && (i <= 50)); i++)
{
num4 = this._ddi.readAppend(this._adtRec.PortAddress.handle, replyData, bytesToRead);
if (num4 < 0)
{
replyData.NumItems = 0;
return TelegramType.DeviceFailure;
}
bytesToRead -= num4;
if (bytesToRead <= 0)
{
bytesToRead = 1;
}
if (replyData.endsWith(str2))
{
replyData.NumItems -= str2.Length;
return TelegramType.DataAcknowledgeOK;
}
}
return TelegramType.DataAcknowledgeERROR;
}