Hi KK, Thank you for the answer. I was able to call the pull_tcp(..) function, on the event buffer. By calling this function I would be able to get a tcp_header structure, or 0 in case something went wrong. And guess what I get from this function :) ? Always 0; even if the event buffer contains a correct tcp header. I'll try to figure out the problem by myself..but obviously suggestions are welcome.
Regards 2011/10/12 kk yap <yap...@stanford.edu> > Hi Andrea, > > My suggestion would be for you to overload the Flow struct with your > own. In that new struct, you can override how pull_tcp works and have > an additional field that stores the seq number. > > Try not to muck with the main distribution, though it is the > convenient thing to do (at least in the short term). You will find > that you will diverge from the main distribution and need to fix bugs > on your own later. > > Regards > KK > > On 12 October 2011 02:51, andrea simeoni <andreasimeon...@gmail.com> > wrote: > > Hi KK, > > > > I think it is exactly want I need to solve my problem. Now the question > is: > > I need to call the static pull_tcp(..) function defined in flow.cc. Well > how > > do I include that file? Maybe it's a stupid question, but I'm not so used > to > > C++. > > > > Thank you in advance > > > > 2011/10/11 kk yap <yap...@stanford.edu> > >> > >> Hi Andrea, > >> > >> In flow.cc, the flow struct is defined and that is used to parse the > >> packet-in content. You can get the seq number for tcp_header which is > >> described in packets.h. It should not be hard to parse this, since > >> the packet is parsed for the various headers already. > >> > >> Regards > >> KK > >> > >> On 11 October 2011 12:07, andrea simeoni <andreasimeon...@gmail.com> > >> wrote: > >> > Hi Murphy, > >> > > >> > thank you for answering. I' ve already checked in /inet++, and I found > >> > the > >> > tcp.hh file. > >> > At first hand it seems being not useful for my task. Or maybe it is, > by > >> > I > >> > don't know how to make it useful :) > >> > I'm right? The file is only few lines of code, so if you have > >> > suggestions it > >> > would not take too much time. > >> > > >> > Thank you very much > >> > > >> > > >> > 2011/10/11 Murphy McCauley <jam...@nau.edu> > >> >> > >> >> It's not quite as developed as the Python packet library, but take a > >> >> look > >> >> in include/netinet++. > >> >> > >> >> -- Murphy > >> >> > >> >> > Hi guys, > >> >> > > >> >> > I'm writing a C++ component that needs to access the TCP sequence > >> >> > number > >> >> > of a packet upon packet-in-event notification. > >> >> > Is there an high level function that simplifies such task? Or I > have > >> >> > to > >> >> > take an offset after calling the get_buffer() function from the > >> >> > event? > >> >> > > >> >> > Thank you. > >> >> > -- > >> >> > Andrea Simeoni > >> >> > _______________________________________________ > >> >> > nox-dev mailing list > >> >> > nox-dev@noxrepo.org > >> >> > http://noxrepo.org/mailman/listinfo/nox-dev > >> >> > >> > > >> > > >> > > >> > -- > >> > Andrea Simeoni > >> > > >> > _______________________________________________ > >> > nox-dev mailing list > >> > nox-dev@noxrepo.org > >> > http://noxrepo.org/mailman/listinfo/nox-dev > >> > > >> > > > > > > > > > -- > > Andrea Simeoni > > > -- Andrea Simeoni
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