my $body = Nginx_Body ( $r );
my $uploads     = $body->upload;     # hashref
## cleanup temp files
undef $uploads;
undef $body;

sub Nginx_Body {
    my $r = shift;
    my $tmpdir = shift;
    
    my $content_type   = $r->headers_in('Content-Type');
    my $content_length = $r->headers_in('Content-Length');

    my $body   = HTTP::Body->new( $content_type, $content_length );
    $body->tmpdir( $tmpdir ) if $tmpdir;
    my $length = $content_length;

    open my($bodyfh),  '<:raw',  $r->request_body_file or die $!;

    while ( $length ) {
        my $read = read(
            $bodyfh,
            my $buffer,
            ( $length < 8192 ) ? $length : 8192
        );
        my $bufferlength = length($buffer);
        die "IMPOSSIBLE $read != $bufferlength " if $read != $bufferlength ;
        $length -= $bufferlength;
        
        $body->add( $buffer );
    }
    return $body;
}