Noam, I may go about doing it like this -
Create 2 threads - one to alloc and fill up sendqueues (as many as required to accomodate the 400MB file); the second to transmit the sendqueues prepared by the first thread, one immediately after the other. When transmit of a sendqueue is finished, the second thread signals the first that has finished with a particular sendqueue and the first thread may destroy it. This of course assumes that time required to fill up a sendqueue is less than the time required to transmit it so that the second thread never has to wait - which may or may not always be the case. This is the scheme I had in mind when I suggested the feature/workaround of having a special last pkt of length 0 to maintain timing across sendqueues. Please note that I'm a developer "using" WinPcap, not a contributing WinPcap developer. GV or someone else may have a better solution to your problem. Good Luck! Adagio On Tue, Nov 10, 2009 at 1:30 AM, <[email protected]> wrote: > Date: Sun, 8 Nov 2009 12:42:01 -0800 > From: Noam Cohen <[email protected]> > Subject: [Winpcap-users] open question: exact timing with > pcap_sendqueue_transmit > To: "[email protected]" <[email protected]> > Message-ID: > <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > Hi > Somehow my question was left unanswered. Can anyone from the developers > relate to it ?(and to the PS below) > Thanks > Noam Cohen > > -----Original Message----- > From: Noam Cohen > Sent: Sunday, November 01, 2009 9:24 AM > To: '[email protected]' > Subject: RE: Winpcap-users Digest, Vol 55, Issue 22 > > Adding a (special) packet to the first call of pcap_sendqueue_transmit() in > order to 'link' the time with the second call is problematic > since not always the caller can know the required transmission time of the > second call during the first call. > > Why not adding a flag that will say "use same time base since first call": > pcap_sendqueue_transmit(... , bool usePreviousTimeBase = false), > or even better: add a new function pcap_set_sendqueue_time_base(timeval* > origin). If this function is called, all transmissions will use this time > base. > > PS: how do people transmit long files? Use your own busy loop? > > Noam _______________________________________________ Winpcap-users mailing list [email protected] https://www.winpcap.org/mailman/listinfo/winpcap-users
