here is the final code:

Correction ;) 

my $app = sub {
    use Path::Tiny qw/ path /;
    use File::MimeInfo qw/ mimetype /;
    
    my $env         = shift;
    my $path_file = 'win.iso';
    
    my $content_type = mimetype($path_file) || 'application/octet-stre
+am';
    
    my $basename = path($path_file)->basename;
    $basename =~ s{[^\w\.-]+}{_}g;
    
    my $filehandle = path($path_file)->openr_raw ;
        
    return [
        200,
        [
            'Content-Type'        => $content_type,
            'Content-Length'        => -s $filehandle,
            'Content-Disposition' => qq[attachment; filename="$basenam
+e"],
        ],
        $filehandle
    ];
};

[download]

In reply to Re^2: Download big file in chunks with plack response by Anonymous Monk
in thread Download big file in chunks with plack response by Thenothing

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.