gistfile1.txt

    this.before(function(){
        var res = this.response;

        if ('OPTIONS' == this.request.method) {
            res.setHeaders(200,{
                'Content-Type': 'text/plain',
                'Access-Control-Allow-Origin': '*',
                'Access-Control-Allow-Methods': 'GET, PUT, POST, DELETE, OPTIONS',
                'Access-Control-Allow-Headers': 'Content-Type, Authorization, X-Requested-With',
                'Access-Control-Max-Age': 5184000   //2 months
            });
            res.finish();
            return;
        }
        else {
            this.response.resp.setHeader('Access-Control-Allow-Origin', '*');
        }
    });