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data cache refresh fails in mobile app

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    data cache refresh fails in mobile app

    I've got some data cache items that work fine online, even on browser on a tablet, but the same UX refreshing the same data cache items fails, and actually has an alert popup that says "failed" coming from something in AA code, not mine.

    There's a message in the console log that tells me the "onBeforeDownloadStart" function is being called, which makes me think the JSON file is being created on the server. But the Response from the server doesn't have the data. I'm running on IIS; is there something in Alpha or IIS that needs to be set to allow the session files to be accessed? I'm accessing session files from the browser already.

    Any suggestions are welcome.

    Hey Chris, you are using the exact same ux and it's only failing when used on a cell phone device? Computer or tablet is ok, cell phone isn't?


      Thanks for the reply. I agree my original request wasn't clear. I actually figured out yesterday that it's working as expected against a different server environment.

      Same UX for browser and for the mobile app
      Same AA build on both servers
      Same database structure on both servers (but different data in databases)
      Similar IIS setup on both servers (though there are probably some settings that are different)
      The only obvious difference I see is that the failing server is running from a subdirectory ( instead of

      Server 1 from Browser works (on computer and mobile devices)
      Server 1 from Mobile App works
      Server 2 from Browser works (on computer and mobile devices)
      Server 2 from Mobile App fails


        Just for testing, did you try to publish on the second server without using a sub folder and see if the problem goes away?


          Okay I'm re-opening this as I'm having troubles again. We've been testing and developing, but had been able to put this issue on the back burner for a while. Here's what I know now. First of all, you have to make sure your samesite settings are correct. Alpha documents this.

          Server 1 Test Server on app - http - works
          Server 2 Pilot site on Production server on app - http - works
          Server 2 Pilot site on Production server on app - https self-signed cert - doesn't work
          Server 2 Pilot site on Production server on Chrome browser - https self-signed cert - works
          Server 3 Pilot site on Production server on app - https purchased cert - works

          The part that's not working is the Alpha built-in data cache download used with dropdown lists, etc. When in Chrome, the JSON data is created on the server, compressed and put into the browser's local storage. On the mobile app, the JSON data is created on the server, then stored in JSON as a file on the device. That's the only difference I know of other than the SSL, but the app works okay with SSL for Server 3 using https. I'm getting beat by this thing.


            This is interesting. My guess is that the self signed certificate is getting automatically blocked behind the scenes within the webview of the app.


              Hello. I know this is an old post, but I am seeing similar behavior in my app. It happened after I installed nightly build 8308 for testing on IIS Server. I always install new versions of Alpha in their own directory as to not interfere with production. After doing this, all IIS apps that use data cache were simply getting the alert "failed" when refreshing the data cache, even production apps using build 8000 of Alpha. I managed to get it working with one app by simply publishing again, or at least I think that is what got it working. However, I have another app where this just does not seem to be working.

              The error is HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.

              Requested URL: /myappName/A5SessionFile/myDataCacheName.json

              Any insight that anyone could give me would be greatly appreciated.‚Äč


                Please disregard. I think I figured it out. On the app where it was working, I had Cookie SameSite value set to Unset, which I remember Sarah saying recently needs to be Unset on all Cordova apps. The app that was not working had SameSite value set to strict. I changed to Unset and published again and it appears to be working. Attending the weekly Alpha Q and A paid off for me! Thanks Sarah!