my @total_content;

    if (!defined($arg) || !$response->is_success) {
	# scalar
	while ($content = &$collector, length $$content) {
	    if ($parser) {
		$parser->parse($$content) or undef($parser);
	    }
	    LWP::Debug::debug("read " . length($$content) . " bytes");
	    push(@total_content, $$content);
	    $content_size += length($$content);
	    $ua->progress(($length ? ($content_size / $length) : "tick"), $response);
	    if (defined($max_size) && $content_size > $max_size) {
		LWP::Debug::debug("Aborting because size limit exceeded");
		$response->push_header("Client-Aborted", "max_size");
		last;
	    }
	}
	$response->add_content(join('', @total_content));