MobileServices.web.js Unauthorized Api Call

When I leave my WinJS app dormant for a while and then come back to it, and i click on a button, for some reason my calls to my backend aren't working. I get an 'Unauthorized' erro

Solution 1:

Instead of wrapping a promise around every API call I just incorporated an idle routine on the client that refreshes the user token when they return to the app as well as refreshes the token every 59 seconds that they are idle.

So for all intense and purposes they will always have an valid token or perpetual state.

$(document).idle({
    onIdle: function () {
        // refresh user token
        if (User.Person !== null)
            User.Person.reauthenticate().done();
    },
    onActive: function () {
        // when the user returns refresh their token 1 more time
        if (User.Person !== null)
            User.Person.reauthenticate().done();
    },
    idle: 59000, // 59 seconds
    recurIdleCall: true // will keep refreshing every 59 seconds
});

https://github.com/kidh0/jquery.idle