internal static bool TryBuild(CitpRecieveData data, out CitpPacket packet)
{
CitpHeader header = new CitpHeader(string.Empty);
packet = header;
try
{
//We have read all the data.
if (data.EndOfData())
{
data.Reset();
return(false);
}
//Check we have enough data to construct the header.
if (data.Length - data.ReadPosition < CitpHeader.PacketSize)
{
return(false);
}
//Read the packet header.
header.ReadData(data.GetReader());
//Ensure the header packet is valid
if (!header.IsValid())
{
//Purge data as it is probably corrupted.
data.Reset(); //Reset position to start so we dump the data.
return(false);
}
//Read the sub packet
switch (header.ContentType)
{
case CitpPInfHeader.PacketType:
packet = BuildPInf(data);
break;
case SDmxHeader.PacketType:
packet = BuildSDmx(data);
break;
case FPtcHeader.PacketType:
packet = BuildFPtc(data);
break;
case FSelHeader.PacketType:
packet = BuildFSel(data);
break;
case CitpMsexHeader.PacketType:
packet = BuildMsex(data);
break;
case CaExHeader.PacketType:
packet = BuildCaEx(data);
break;
case FInfHeader.PacketType:
packet = BuildFInf(data);
break;
default:
packet = null;
break;
}
//Advance the read and write pointers past the successfully read packet.
data.ReadPosition += header.MessageSize;
}
catch (EndOfStreamException)
{
return(false);
}
//We have managed to read the packet even if it was unknown and set to null so lets return true
return(true);
}
internal static bool TryBuild(CitpReceiveData data, out CitpPacket packet)
{
CitpHeader header = new CitpHeader(string.Empty);
packet = header;
try
{
//We have read all the data.
if (data.EndOfData())
{
data.Reset();
return(false);
}
//Check we have enough data to construct the header.
if (data.Length - data.ReadPosition < CitpHeader.PacketSize)
{
return(false);
}
//Read the packet header.
header.ReadData(data.GetReader());
//Ensure the header packet is valid
if (!header.IsValid())
{
//Purge data as it is probably corrupted.
data.Reset(); //Reset position to start so we dump the data.
return(false);
}
//Read the sub packet
switch (header.ContentType)
{
case CitpPInfHeader.PacketType:
packet = BuildPInf(data);
break;
case SDmxHeader.PacketType:
packet = BuildSDmx(data);
break;
case FPtcHeader.PacketType:
packet = BuildFPtc(data);
break;
case FSelHeader.PacketType:
packet = BuildFSel(data);
break;
case CitpMsexHeader.PacketType:
packet = BuildMsex(data);
break;
case CaExHeader.PacketType:
packet = BuildCaEx(data);
break;
default:
return(false);
}
}
catch (EndOfStreamException)
{
return(false);
}
return(packet != null);
}
