aspen.js

        var simplate;

        if (err) return fail(res, 404);

        if (stats.isDirectory()) {
            var tmp_simp;
            new_path = fs_path + path.sep + config.index;

            fs.exists(new_path, function(exists) {
                if(exists === true) {
                    tmp_simp = new_path;
                } else {
                    // Serve up autoindex simplate
                    tmp_simp = fs_path + path.sep + config.simplates.defaults + path.sep + 'autoindex.html';
                }
                simplate = tmp_simp;
            });
            simplate = tmp_simp;
            console.log(simplate);
        } else {
            simplate = fs_path;
        }
        console.log('simplate: ' + simplate);
        var content_type = mime.lookup(simplate);