Re: sending MAC packets --- again, and again

From: Daniel Valencia (fetrovsky_at_yahoo.com)
Date: 05/21/05

  • Next message: Daniel Valencia: "[SOLVED] sending MAC packets --- again, and again" 
    Date: Sat, 21 May 2005 11:06:42 -0700 (PDT)
To: freebsd-net@freebsd.org

    Hello

    --- Charles Swiger <cswiger@mac.com> wrote:
    > pcap_dispatch() will not
    > necessarily
    > return when the read times out; on some
    > platforms, the read
    > timeout
    > isn't supported, and, on other platforms,
    > the timer doesn't
    > start until
    > at least one packet arrives. This means

    If I read this correctly, pcap will sometimes wait
    forever until a packet appears, which I don't actually
    mind because it's actually the behaviour that I'm
    expecting. What is really odd is that even when
    packets ARE arriving, pcap_loop just sits there, lets
    the packets pile up, and then shows all the messages
    at once... then it blocks again for a while, even as I
    send messages from the other computer, just to show
    them all at once again, and so on...

    > you'll probably find yourself either going
    > multithreaded or using

    I'm actually going multithreaded, but I'd expect a
    packet to show up immediately, so I can process it and
    perform the routing in a timely manner, rather than
    delivering a packet a minute after it was sent.

    Thank you very much!

    - Daniel

                    
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