Unable to get response from Private URL using fetch from BlackBerry-Dynamics-for-React-Native-Networking

Question

Here is my code snippet

import { fetch } from 'BlackBerry-Dynamics-for-React-Native-Networking';

async componentDidMount() {
    try {

      let res = await fetch('http://my-private-url.com',
      {
         method : 'GET',
         headers : {}
      });
      
      let response = await res.text();
      // let response = await res.json(); // tried this method as well, getting same behaviour
      
    } catch (error) {
      console.log('errr-----', error);
    }
  }

I am getting the following error sometimes and sometimes it works fine (Note - on the same API, same response) :-

Error: The specified blob is invalid
    at Object.promiseMethodWrapper [as readAsText] (D:\PE-Code\rester\ds\node_modules\react-native\Libraries\BatchedBridge\NativeModules.js:103)
    at EventTarget.readAsText (D:\PE-Code\rester\ds\node_modules\BlackBerry-Dynamics-for-React-Native-Networking\js\FileReader.js:118)
    at readBlobAsText (D:\PE-Code\rester\ds\node_modules\BlackBerry-Dynamics-for-React-Native-Networking\js\fetch.js:206)
    at Response.Body.text (D:\PE-Code\rester\ds\node_modules\BlackBerry-Dynamics-for-React-Native-Networking\js\fetch.js:300)
    at RootDashboard.componentDidMount$ (D:\PE-Code\rester\ds\src\components\dashboards\RootDashboard.js:48)
    at tryCatch (D:\PE-Code\rester\ds\node_modules\regenerator-runtime\runtime.js:63)
    at Generator.invoke [as _invoke] (D:\PE-Code\rester\ds\node_modules\regenerator-runtime\runtime.js:293)
    at Generator.next (D:\PE-Code\rester\ds\node_modules\regenerator-runtime\runtime.js:118)
    at tryCatch (D:\PE-Code\rester\ds\node_modules\regenerator-runtime\runtime.js:63)
    at invoke (D:\PE-Code\rester\ds\node_modules\regenerator-runtime\runtime.js:154)

Can you help me by suggesting what I might be doing wrong? Am I using the fetch from BlackBerry-Dynamics-for-React-Native-Networking correctly?

React Native Version - 0.63.4, BB Dynamics SDK version - 8.1

Sometimes it works fine, sometimes it gives error.

I am making 3-4 API requests at the time of loading of my application, sometimes the 3rd request fails, sometimes the 1st one fails and happens like this randomly.

I logged the xhr before this line - https://github.com/blackberry/BlackBerry-Dynamics-React-Native-SDK/blob/master/modules/BlackBerry-Dynamics-for-React-Native-Networking/js/fetch.js#L483

Some of my findings which tell me whether I got a successful response or not -

1. The blob size when we get successful response is significantly greater (around 1200) than when we get an error response (around 50) on the same API, same response.

2. When I get a successful response, the responseURL is correct but when I don't get a successful response, the responseURL is - "http://10.0.2.2:8081/symbolicate".

3. Also, most of the times, I get an error on the first time my app is loaded after going through the BB authorization screens. It works fine most of the times after I refresh my app.

XHR when I get a successful response - Successful Response XHR

XHR when I get error - Error

Do these findings help in any way?

Answer 1

are you able to reach the private URL from another BlackBerry Dynamics application? The SDK must be in an authenticated state prior to calling the networking APIs. I recommend testing if you can reach the URL in our BasicNetworkingSample or from BlackBerry Access (if available).

BasicNetworkingSample: https://github.com/blackberry/BlackBerry-Dynamics-React-Native-SDK/tree/master/SampleApplications/BasicNetworking