#!/usr/bin/perl # # $Id: udp-send.pl,v 1.3.2.2 2006/11/23 22:44:24 gomor Exp $ # use strict; use warnings; use Getopt::Std; my %opts; getopts('i:p:d:I:v', \%opts); die "Usage: $0 -i dstIp -p dstPort [-d device] [-I srcIp] [-v]\n" unless $opts{i} && $opts{p}; use Net::Packet; $Env->dev($opts{d}) if $opts{d}; $Env->ip ($opts{I}) if $opts{I}; $Env->debug(3) if $opts{v}; my $ip = Net::Packet::IPv4->new( protocol => NP_IPv4_PROTOCOL_UDP, dst => $opts{i}, ); my $udp = Net::Packet::UDP->new( dst => $opts{p}, ); my $frame = Net::Packet::Frame->new( l3 => $ip, l4 => $udp, ); $frame->send; until ($Env->dump->timeout) { if ($frame->recv) { print "Reply:\n"; print $frame->reply->l3->print, "\n"; print $frame->reply->l4->print, "\n"; if ($frame->reply->l4->error) { print "Reply ICMP error:\n"; print($frame->reply->l4->error->l3->print, "\n") if $frame->reply->l4->error->l3; print($frame->reply->l4->error->l4->print, "\n") if $frame->reply->l4->error->l4; } last; } } $Env->dump->stop; $Env->dump->clean;