private void ReadPacketInternal(bool readData, out UdpLogPacketDescriptor desc, byte[] data)
{
long filePosition = stream.Position;
long ticks = reader.ReadUInt32();
uint sourceIP = reader.ReadUInt32();
uint destIP = reader.ReadUInt32();
ushort destPort = reader.ReadUInt16();
int len = reader.ReadInt32();
if (readData || !stream.CanSeek)
{
if (data.Length < len)
{
throw new ArgumentException("Data buffer is not sufficient length", "data");
}
int offset = 0;
int count = len;
int bytesRead = 0;
do
{
bytesRead = stream.Read(data, offset, count);
if (bytesRead == 0)
{
throw new EndOfStreamException();
}
count -= bytesRead;
offset += bytesRead;
} while (count > 0);
}
else
{
data = null;
long targetPosition = stream.Position + len;
long newPosition = stream.Seek(len, SeekOrigin.Current);
if (targetPosition != newPosition)
{
throw new EndOfStreamException();
}
}
TimeSpan timestamp = TimeSpan.FromTicks(ticks * tickConv);
desc = new UdpLogPacketDescriptor(timestamp, sourceIP, destIP, destPort, len, filePosition);
}
public void ReadPacket(out UdpLogPacketDescriptor desc, byte[] data)
{
ReadPacketInternal(true, out desc, data);
}