cgi download and delete file

[teddyttas]

Hi Monks!

I would like to have your advice on the following problem:

I am making a small webapp and my purpose is to create a number of text files, compress them, download as zip file and erase.

For the moment I've been able to create the directory with the file, put them in a zip file and to download, but I can't erase the zip file. Well..It's not totally true. The problem is that if I do it, it compromises the download. My question would then be : Ho can I postpone the file elimination or, how can I check that the file has been totally completed before I erase it?

I know about the existence of File::Temp, but as I need this zip file just once, I think it would be simpler to just delete it. Here is a part of the code

sub write_and_download{

    [...]

    $self->generate_zip();

    $self->download_file();

    my $filename = "temporary/" . $projectname . ".zip";
    unlink $filename;

};

sub download_file{
my $self = shift;
    my $downloadfile = $projectname . ".zip";
    my $fullpathdownloadfile = "temporary/$downloadfile";
    my $output = '';
    my $buffer = '';
    open my $fh, '<', $fullpathdownloadfile
      or return error_handler("Error: Failed to download file <b>$down
+loadfile</b>:<br>$!<br>");

    while (my $bytesread = read($fh, $buffer, 1024)) {
      $output .= $buffer;
    }

    close $fh
      or return error_handler("Error: Failed to download file <b>$down
+loadfile<b>:<br>$!<br>");

    my  $downloadfilesize = (stat($fullpathdownloadfile))[7]
      or return error_handler("Error: Failed to get file size for <b>$
+downloadfile<b>:<br>$!<br>");
      
    $self->header_props(
                        '-type'                => 'application/x-downl
+oad',
                        '-content-disposition' => "attachment;filename
+=$downloadfile",
                        '-content_length'      => $downloadfilesize,
                       );
    return $output;
};

I thank you from now for your help