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Re: Download big file in chunks with plack response

by kikuchiyo (Friar)
on Apr 21, 2021 at 14:32 UTC ( #11131533=note: print w/replies, xml ) Need Help??


in reply to Download big file in chunks with plack response

See the section Delayed Response and Streaming Body in the PSGI specification.

What you want is something like this (untested):

use strict; use warnings; ####use Plack::Response; # doesn't seem to support streaming response use Path::Tiny; use File::MimeInfo; sub return_psgi { my $self = shift; my $path_file = shift; my $content_type = mimetype($path_file); $content_type = 'application/octet-stream' if not defined $content +_type; my $content = path($path_file); my $content_download = $content->slurp; require File::Spec::Unix; my $basename = $path_file; $basename =~ s|\\|/|g; $basename = ( File::Spec::Unix->splitpath($basename) )[2]; $basename =~ s|[^\w\.-]+|_|g; return sub { my $responder = shift; my $writer = $responder->( [ 200, [ 'Content-Type' => $content_type, 'Content-Disposition' => qq[attachment; filename="$ +basename"], ] ] ); open (FILE, "< $path_file") or die "can't open $path_file: $!" +; binmode FILE; local $/ = \102400; while (<FILE>) { $writer->write($_); } $writer->close(); close FILE; } }

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