private void Open()
{
if (_opened)
{
return;
}
_fs = new FileStream(_file, FileMode.Open, FileAccess.Read, FileShare.Read);
_index = 0;
_pcapHeader = ReadPcapHeader();
_opened = true;
}
//public static unsafe T ReadValue<T>(Stream stream) where T : struct
//{
// int l = Marshal.SizeOf(typeof(T));
// byte[] data = new byte[l];
// stream.Read(data, 0, l);
// fixed (byte* p = &data[0])
// {
// return *(T*)p;
// }
//}
public static unsafe bool ReadPcapHeader(Stream stream, out PcapHeader pcapHeader)
{
int l = sizeof(PcapHeader);
byte[] data = new byte[l];
if (stream.Read(data, 0, l) != l)
{
pcapHeader = new PcapHeader();
return(false);
}
fixed(byte *p = &data[0])
{
pcapHeader = *(PcapHeader *)p;
return(true);
}
}
