Thank you very much for your time Guy, you are always ready to answer this kind of questions.
2013/5/27 Guy Harris <[email protected]> > > On May 27, 2013, at 7:26 AM, Asier Martínez <[email protected]> wrote: > > > I'm trying to achieve a portable way of reading from multiple pcap > devices in non blocking. > > As far as I know, on Windows select() function it's nos usable with > Winpcap because there is no file descriptor for that purposes available > into the library, and this functionality must be implemented obtain a win32 > HANDLE with pcap_getevent() and wait on it with > WaitForSingleObject/MultipleObjects(Ex). > > That's the correct way to do that on Windows. > > > On the other hand, I read on release changelog on Winpcap.org: > > > > Version 3.01 alpha > > • pcap_fileno returns a valid description also in case of a remote > capture, so that the'select()' function can be used to check if packets are > waiting to be read > > WinPcap is a port of libpcap to Windows, and shares a lot of code with > libpcap; the remote capture code can work on UN*X as well as on Windows. > > That particular changelog item probably refers to the remote capture code > on UN*X. > > > ¿What is the most portable ( and correct ) approach to read from > multiple interfaces with winpcap ? > > There isn't one. There's one that works on UN*X (except when it doesn't, > e.g. BPF only works with select() with newer versions of the various *BSDs > and OS X, and in some OS versions, the workaround for that doesn't work), > namely using select(), and and there's one that works on Windows, namely > WaitFor.... > > > pcap_fileno returns a valid descriptor or not? > > On Windows, it happens to return a HANDLE (assuming a HANDLE fits in an > int), but it's not necessarily the HANDLE for something on which you can do > a WaitFor.... > _______________________________________________ > Winpcap-users mailing list > [email protected] > https://www.winpcap.org/mailman/listinfo/winpcap-users >
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