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Re: attached gateways
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Re: attached gateways


  • Subject: Re: attached gateways
  • From: Chase <email@hidden>
  • Date: Tue, 28 Jun 2005 10:50:53 -0500

Scratch that last question. I've read a lot since yesterday on ICMP and that question really didn't make any sense, now that I understand a little more about it.

But, this little code snippet I found in an online tutorial isn't catching any ICMP packets:

int main() {
    char buffer[8192];
    int fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);
    printf("\nHere we go...\n");
    while (read (fd, buffer, 8192) > 0) {
        printf("Caught ICMP Packet\n");
    }
    return 0;
}


It compiles and runs fine, but never catches anything. It just sits on the read() line, waiting indefinitely.


I tried unplugging/replugging routers to force them to send ICMP router advertisements, but still nothing shows up.

Any ideas?

Thanks.

- Chase

PS: Anyone know of a higher volume list where I could ask these questions? I'm practically the only poster for almost two straight days.



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  • Follow-Ups:
    • Re: attached gateways
      • From: Dalton Hamilton <email@hidden>
    • Re: attached gateways
      • From: Daniel Sumorok <email@hidden>
References: 
 >attached gateways (From: Chase <email@hidden>)
 >Re: attached gateways (From: Daniel Sumorok <email@hidden>)
 >Re: attached gateways (From: Chase <email@hidden>)
 >Re: attached gateways (From: Daniel Sumorok <email@hidden>)
 >Re: [RESOLUTION-IN-SIGHT] attached gateways (From: Chase <email@hidden>)
 >Re: attached gateways [MORE_QUESTIONS...] (From: Chase <email@hidden>)
 >Re: attached gateways [MORE_QUESTIONS...] (From: Chase <email@hidden>)

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