nodejs阿里大鱼发送短信

// 短信发送的参数对象
//验证码${code}，您正在进行${product}身份验证，打死不要告诉别人哦！
var sms_param='{"code":"'+code+'", "product":'+sms_product+'}';
var obj = {
    format : 'json',
    method : 'alibaba.aliqin.fc.sms.num.send',
    partner_id : 'top-apitools',
    rec_num : phone,
    sign_method : 'md5',
    sms_type : 'normal',
    sms_param :sms_param,
    sms_free_sign_name :sign_name,
    sms_template_code : tmpl_code,
    timestamp : '2015-10-20 20:41:05',
    v:'2.0'
}
var sign = tbSign(obj);
var dataObj=obj;
dataObj['app_key']=settings["ali_sms"]['app_key'];
dataObj['timestamp']=sign.timestamp;
dataObj['sign']=sign.sign;

console.log("签名:"+JSON.stringify(obj));


var content = querystring.stringify(dataObj);

console.log("参数："+content);
var options = {
    host: 'gw.api.taobao.com',
    path: '/router/rest',
    method: 'POST',
    agent: false,
    rejectUnauthorized: false,
    headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
        'Content-Length': content.length
    }
};
var error = "";
var req = http.request(options, function (res) {
    res.setEncoding('utf8');
    res.on('data', function (chunk) {
        console.log(JSON.parse(chunk));
        //cb && cb(JSON.parse(chunk).code);
        var json=JSON.parse(chunk);
        if(json.error_response){
            error=-1;
        }else{
            if(json.alibaba_aliqin_fc_sms_num_send_response.result.success){
                error=1;
            }else{
                error=-1;
            }
        }

    });
    res.on('end', function () {
        cb && cb(error);
    });
});
req.write(content);
req.end();