请问如何使用esp_iot_sdk中的iot_demo例程查询和设置灯的状态？

使用esp_iot_sdk_v1.4.0_15_09_18中IOT_DEMO例子
已经正确激活了Espressif Cloud
串口终端显示

ping success
user_esp_platform_sent_beacon 1758066291
user_esp_platform_sent_cb
user_esp_platform_recv_cb {"status": 200, "epoch": 1448369437, "message": "ping success", "identified": true, "datetime": "2015-11-24 20:50:37"}


测试使用的KEY ID:
user key：        a12c5b4447bf7c0e6a82d37f904f0ec1d6128965
device key：         4c91f317b2011ff69af54abbfb7494f009a0e24c
owner key：          da747d1b3801cba78834b43658174c816ca83226

问：查询和设置灯的状态步骤？

测试情景：
1.向Espressif Cloud 申请设备的控制权
使用user key and  random token 返回owner key
curl -X POST -H "Authorization:token " -d"{"token": ""}" http://iot.espressif.cn/v1/key/authorize/

2.查询灯的状态
curl -X GET -H "Content-Type:application/json" -H "Authorization: token " http://iot.espressif.cn/v1/datastreams/light/datapoint

执行此命令后，执行终端显示{"status": 403, "message": "can not find datastreamTmpl(product_id: 1910, stream_name: light)", "result": "failed"}

IotBucket控制台请求日志：
GET /v1/datastreams/light/datapoint 2015-11-24T21:09:19+08:00  
{
  "body": {},
  "created": "2015-11-24T21:09:19+08:00",
  "get": {},
  "meta": {
    "Authorization": "token da747d1b3801cba78834b43658174c816ca83226"
  },
  "path": "/v1/datastreams/light/datapoint",
  "method": "GET"
}