Bonjour , j'ai écris un petit script qui fait du téléchargement en http multi-threadé de jpg sur le site de wallpaper interfacelift.
Le voici en copier/coller et le lien pastebin

http://pastebin.com/F9yQmndf

Aussi le lien sur un .exe compilé avec perl2exe
http://www36.zippyshare.com/v/57266405/file.html

Code :
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 use LWP::UserAgent;
  use HTML::LinkExtor;
  use URI::URL;
  use warnings;
  use strict;
  use Thread; 
 
  use constant {
		NB_THRD_MAX => 3
  };
 
 
  my $launch_url = "http://interfacelift.com/wallpaper/downloads/date/any";  # for instance
  my $base_url= "http://interfacelift.com";
  my $url=$launch_url;
 
 
  my $repertoire="./download";
  mkdir ($repertoire, 755);
  my @tabres= ("1280x1024","1920x1080");
  my $page=1;
  my $nbr_thrd=0;
 
# Download everything on $url
# and write into /download
sub download_url
{
 my ($url)=@_;
 my @tablines=();
 my %links=();
 my $nomfichier;
 my $urlfichier;
 my $mystream;
 my $cpt=0;
 
  my $ua = LWP::UserAgent->new;
  $ua->agent("zero-agent");
  $ua->timeout(30);
 
 
 
  my $response = $ua->get($url);
 
 #print "\n Thread Launched\n";
 if ($response->is_success) {
     @tablines=split('\n',$response->decoded_content);  # or whatever
 } else { print "\n HTTP KO";}
 
 
 foreach (@tablines)
 {
 
	#if ($_=~/javascript\:imgload\('(.*?)',.*?,'(.*?)'\).*?$/mi)
 
    if ($_=~/javascript\:imgload\('(.*?)',.*?,'(.*?)'\).*?$/mi)
	{
	foreach (@tabres)
		{
		#$links{$1.'_'.$_}="$base_url/wallpaper/7yz4ma1/0".$2."_".$1."_".$_.".jpg";
		$links{$1.'_'.$_}="$base_url/wallpaper/D47cd523/0".$2."_".$1."_".$_.".jpg";
 
 
		}
	}
 }
 
 for my $nomfichier ( keys %links )
                  {
				  $urlfichier=$links{$nomfichier}; 
                  print "Downloading => ".$urlfichier;
                  $response = $ua->get($urlfichier);
                  if ($response->is_success) {print " -- HTTP OK\n";}
                  $mystream=$response->decoded_content;
				  $nomfichier=$repertoire.'/'.$nomfichier.'.jpg';
                  open(FILE, ">$nomfichier") || die "Erreur E/S:$!\n";
				  binmode FILE;
                  print FILE $mystream;
				  close(FILE);
                  }
 
#print "\n Done on $url\n";
}
 
sub search_nextpage
{
my ($ref_tablines)=shift;
 
 
for (@$ref_tablines)
    {
      #if ($_=~m/^.*?href="(.*?)".*?next\spage.*?$/i)
 
	  if ($_=~m/[.|\s]*?href="(.*?)".*?next\spage.*?$/i)
	  {
 
	  return $1;
	  }
    }
return "";
}
 
sub lis_url
{
my ($url)=shift;
my ($ref_tablines)=shift;
 
 
  my $ua = LWP::UserAgent->new;
  $ua->agent("zero-agent");
  $ua->timeout(30);
 
 
my $response = $ua->get($url);
 
 if ($response->is_success) {
     @$ref_tablines=split('\n',$response->decoded_content);  # or whatever
 
	 #print "\n HTTP OK sur $url \n";	
	return 1;
 }
else
 {
	#print "\n HTTP KO sur $url \n";
	return 0;
 }
}
 
sub count_thrd
{
my $nbr=0;
foreach my $thr (threads->list()) {$nbr++;}
return $nbr;
}
 
 sub start_leeching
 {
my ($url)=shift;
my @tablines=();
my $nextpage=$url;
my %thrd;
my $thr;
 
 while (lis_url($nextpage,\@tablines))
 {
 
	# Download everything on url
	#print "\n Launching Thread ".count_thrd();
	$thrd{$nextpage} = new Thread \&download_url,$nextpage;
	$nbr_thrd++;
 
	print"\n Current number of threads launched : $nbr_thrd over ".count_thrd()." actives\n";
 
	if (count_thrd()>=NB_THRD_MAX)
	{
		# Loop through all the threads
		# and wait the last to finished
		#print "\n ---- COOL DOWN -------------------------------------\n";
		#print "\n ---- ".NB_THRD_MAX." maximum threads is reached ----\n";
 
		foreach $thr (threads->list()) 	
		{
			#print "\n ---- ".count_thrd()." threads are running ----\n";
			#print "\n ---- Waiting for a thread to cool down ----\n";
			$thr->join();
			#print "\n ---- Done ----\n";
		}
	}
 
 
	$nextpage=search_nextpage(\@tablines);
	$nextpage=$base_url.$nextpage;
	#print "Next page => $nextpage \n";
	@tablines=();
}
 
}
 
 
 
 
#if ($ARGV[0] ne "") {$url=$ARGV[0];$base_url=$url;}
 
#if (!($url=~/^http/i)) {
#						$base_url="http://".$url;
#						$url="http://".$url;
#					   }
 
#print "Recherche de liens sur $url\n";
#print "Base url est : $base_url\n";
 
print "\n -------------------------------------";
print "\n - InterfaceLift WaLlPaPer LeeCher   -";
print "\n -------------------------------------";
print "\n\nAll images are downloaded into ./download";
print "\n- Use ctrl-C to stop whenever you want";
print "\n\n => Starting";
 
start_leeching($url);