68 lines
1.3 KiB
Perl
68 lines
1.3 KiB
Perl
#!/usr/bin/perl
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use threads;
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use threads::shared;
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use bytes;
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use IO::Socket;
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use strict;
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my @dom = ("seed","bitcoin","sipa","be");
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my $run :shared = 1;
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sub go {
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my ($idx) = @_;
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my $runs = 0;
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my $sock = IO::Socket::INET->new(
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Proto => 'udp',
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PeerPort => 53,
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PeerAddr => "vps.sipa.be",
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) or die "Could not create socket: $!\n";
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while($run) {
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my $id = int(rand(65536));
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my $qr = 0;
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my $opcode = 0;
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my $aa = 0;
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my $tc = 0;
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my $rd = 0;
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my $ra = 0;
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my $z = 0;
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my $rcode = 0;
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my $qdcount = 1;
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my $ancount = 0;
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my $nscount = 0;
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my $arcount = 0;
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my $header = pack('nnnnnn',$id,1*$qr + 2*$opcode + 32*$aa + 64*$tc + 128*$rd + 256*$ra + 512*$z + 4096*$rcode, $qdcount, $ancount, $nscount, $arcount);
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my $qtype = 1; # A record
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my $qclass = 1; # IN class
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my $query = (join("", map { chr(length($_)) . $_ } (@dom,""))) . pack('nn',$qtype,$qclass);
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my $msg = $header . $query;
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$sock->send($msg);
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my $resp;
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$runs++ if ($sock->recv($resp, 512, 0));
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# $sock->close();
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}
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return $runs;
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}
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my @threads;
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for my $i (0..500) {
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$threads[$i] = threads->create(\&go, $i);
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}
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sleep 10;
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$run=0;
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my $runs = 0;
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foreach my $thr (@threads) {
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$runs += $thr->join();
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}
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print "$runs runs\n";
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