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  1. or download this
       my $req         = HTTP::Request->new(HEAD => $url);   
   my $resp        = $ua->request($req);
   my $type        = $resp->header('Content-Type');
   my $content     = $resp->content;   
   my $content_len = $resp->header('Content-Length');
  2. or download this
       my $req         = HTTP::Request->new(GET => $url); 
   my $content     = $resp->content;
   my $content_len = length($content);
  3. or download this
       my $req         = HTTP::Request->new(HEAD => $pl_url);
   my $resp        = $ua->request($req);
...
       $content     = $resp->content;  
       $content_len = length($content);
   }