/// <summary>
/// Marshal this structure into the platform dependent version and return
/// and IntPtr to that memory
///
/// NOTE: IntPtr MUST BE FREED via Marshal.FreeHGlobal()
/// </summary>
/// <returns>
/// A <see cref="IntPtr"/>
/// </returns>
public IntPtr MarshalToIntPtr()
{
IntPtr hdrPtr;
if (!isWindows)
{
// setup the structure to marshal
var pkthdr = new PcapUnmanagedStructures.pcap_pkthdr_unix();
pkthdr.caplen = this.CaptureLength;
pkthdr.len = this.PacketLength;
pkthdr.ts.tv_sec = (IntPtr)this.Seconds;
pkthdr.ts.tv_usec = (IntPtr)this.MicroSeconds;
hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(PcapUnmanagedStructures.pcap_pkthdr_unix)));
Marshal.StructureToPtr(pkthdr, hdrPtr, true);
}
else
{
var pkthdr = new PcapUnmanagedStructures.pcap_pkthdr_windows();
pkthdr.caplen = this.CaptureLength;
pkthdr.len = this.PacketLength;
pkthdr.ts.tv_sec = (int)this.Seconds;
pkthdr.ts.tv_usec = (int)this.MicroSeconds;
hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(PcapUnmanagedStructures.pcap_pkthdr_windows)));
Marshal.StructureToPtr(pkthdr, hdrPtr, true);
}
return hdrPtr;
}