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Re: Re: networking over the loopback

by rob_au (Abbot)
on May 22, 2002 at 04:21 UTC ( #168345=note: print w/replies, xml ) Need Help??


in reply to Re: networking over the loopback
in thread networking over the loopback

And in the spirit of using Perl for reinventing wheels, a TCP packet dumper using Net::PcapUtils ... :-)

use Net::PcapUtils; use NetPacket::IP; use NetPacket::TCP; use NetPacket::Ethernet qw/:types/; use strict; Net::PcapUtils::loop( sub { my ($arg, $header, $packet) = @_; my $ethernet = NetPacket::Ethernet->decode($packet); if ($ethernet->{'type'} == ETH_TYPE_IP) { my $ip = NetPacket::IP->decode($ethernet->{'data'}, $ether +net); my $tcp = NetPacket::TCP->decode($ip->{'data'}); print $ip->{'src_ip'}, ":", $tcp->{'src_port'}, " -> ", $ip->{'dest_ip'}, ":", $tcp->{'dest_port'}, "\n\n"; my @data = split //, $tcp->{'data'}; while (@data) { print "\t"; for (0..7) { print sprintf("%02x", shift(@data)), " "; } print "\n"; } print "\n"; } }, 'DEV' => 'lo' );

 

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