whether due to the size of one file or due to the number of files
"the number of files" - as in "the number of files within the archive", right? Because download() only handles one file at a time.
Any clues ?
Come to think of it, this could be a server configuration issue (google "mod_gzip" OR "mod_deflate" zip corruption). What happens if you put a (preferably large) ZIP archive somewhere within the document root and download it using the direct link?

Well, anyway, try this slightly modified version of download:

sub download {
    my $filename = $_[0].$_[1];
    use CGI;
    $html=new CGI;
    $| = 1;
    print $html->header(
        -type           => 'application/zip',
        -charset        => 'binary',
        -attachment     => $_[1],
        -Content_length => -s $filename);
    open($peunter, "<", $filename);
    binmode($peunter);
    binmode STDOUT;
    while (read($peunter,$bytes,1024)) {
        print $bytes;
    }
    close($peunter);
}

[download]

In reply to Re^7: CRC Error on ZIP Files by hazylife
in thread CRC Error on ZIP Files by SearchigPerl

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