ionic 2 app works in browser but not on device (not a CORS issue)

[Candide Kemmler]

Hi,

I started off this example:

https://www.joshmorony.com/offline-syncing-in-ionic-2-with-pouchdb-couchdb/

Looking at the HTTP traffic, when I'm in the browser, I can see that there is a long sequence of queries when the app start. This sequence starts with a GET request to the root URL of my database (i.e. '/observations/') and it is immediately followed by a request to '/observations/_changes' and then '/observations/_local/somelongstringofchars'. On the device, however, I can only see the first request (i.e. '/observations/'), which proves that there are no CORS issues at hand and the device is indeed able to communicate with the server. I originally noticed the issue as I tried to do a database insert using a promise, like this:

    return new Promise((resolve, reject)=>{
      new this.topicsDB.put(topic).then(
        ()=>{
          console.log("OK, created topic");
          resolve({})
        }
      ).catch((error)=>{
        console.log("Couldn't create topic", error);
        reject(error)
      });
    });

but neither the resolve nor the reject handler was called and my call just hung. This makes me wonder what state is the app in that case and how I can avoid this sort of deadlock situation.

Thanks!

Candide