RTSP视频智能分析平台EasyNVR多nginx启动时getlivesessions接口如何返回所有nginx数据？

func getReuslts(index int) (results []gjson.Result) {
   client := http.Client{
      Timeout: 3 * time.Second,
   }
   resp := &http.Response{}
   var err error
   if index == 0 {
      resp, err = client.Get(fmt.Sprintf("http://127.0.0.1:%d/getlivesessions", GetHTTPPort()))
   } else {
      resp, err = client.Get(fmt.Sprintf("http://127.0.0.1:%d/getlivesessions", GetMutliHTTPPort(index)))
   }
   if err != nil {
      return
   }
   defer resp.Body.Close()
   body, err := ioutil.ReadAll(resp.Body)
   if err != nil {
      return
   }
   gsessions := gjson.GetBytes(body, "EasyDSS.Body.Sessions.Sessions")
   if !gsessions.IsArray() {
      return
   }
   return gsessions.Array()
}