The NPF driver doesn't support overlapped IO. However, you can probably obtain the result you need using the ReadEvent filed of the ADAPTER structure or the handle returned by pcap_getevent().
Loris ----- Original Message ----- From: "Fred N. van Kempen" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, July 31, 2003 10:13 PM Subject: [WinPcap-users] Overlapped I/O with Win32 version (W2K) of packet32 ? Hi all, For a rather strange application, I need async I/O support from the packet32.dll module. What I *really* need is select()-like behavior on a bunch of open interfaces, but I can easily simulate that as long as I have async (overlapped) I/O on the interface handles. While implementing the code in my application, and hitting some errors from the Packet32 DLL, I checked the source of Packet32. It looks like the channel to the kernel driver is opened using the standard AdapterObject->hFile = CreateFile( ... ) calling sequence, which is as expected. I can simply bypass the standard PacketReceivePacket() call and replace it with my own code to handle the overlapped-ness, no problem there. What *is* sadly not working, is the actual parameters to the CreateFile call above... the adapter handle is *not* opened with the FILE_FLAG_OVERLAPPED parameter enabled, so, overlapped I/O will not work on these handles. Although I am currently still using V2.3 on my development system, it looks (from the source) that V3.0 does not have it, either. Since I don't have the Microsoft SDK/DDK installed (just Vissual Studio V6.0SP5+PP), I cannot compile the "changed" packet32.c myself :( Question: could one of the developers of the package help me out? Thanks, Fred ====================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ====================== ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ==================================================================
