aty

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  • in reply to: Net frozen after few minutes #6072
    aty
    Participant

    Thank you very much for the information SerpentFly.

    aty

    in reply to: Net frozen after few minutes #6070
    aty
    Participant

    SerpenFly

    Thank you very much for the reply. Your tip helped me find out that I simply forgot to process non-IP packets (see line 17 in the code…).

    I guess that at some point, lack of ARP/RARP functionality hanged up the LAN.

    Regarding MTU: As far as I know, windows default MTU for ethernet adapters is 1500. I always attach a 20 bytes key to outgoing UDP packets.
    Can I conclude from this that I might have a problem only with packets whose total length is 1480 bytes or more ?

    Another question:
    Can I catch packets that are directed either to 127.0.0.1 or to the local IP ? are those packets passed down the TCP stack or are they redirected by Windows back to the application at higher levels ?

    Thanks again,
    aty

    in reply to: Net frozen after few minutes #6068
    aty
    Participant

    Just thought to mentioned that I’m using the runtime libraries that are available at the web site (hxxp://www.ntoskrnl.com/downloads/winpkflt_rtx86.zip).

    Could it be related (are those runtimes limited) ?

    Many thanks,
    aty

    in reply to: UDP checksum recalculation #6064
    aty
    Participant

    Thanks a lot 🙂

    aty

    p.s: It would be very useful if the checksum calculation methods (IP/TCP/UDP) will be included in future versions of the WinpkFilter DLL – add to the wish-list.

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