How to force refresh GCM token (registration ID) in iOS?

[malwatte]

I tried unregistering and re-registering to force GCM token refresh. But it did not refresh the GCM token. (I use GCM to send push notifications.)

1. I registered (init the plugin) and sent push notifications. App received notifications.
2. I unregistered and sent push notifications to the app. App did not received push notifications.
   That is expected.
   But the problem is I thought I would get get "NotRegistered" error from FCM as the response
   when calling FCM end-point. Instead it returned a messageId. That means notification is send
   from FCM but OS did not showed it in the device.
3. I waited for 15 minuted and sent notifications. But still same behavior.
4. I registered (init the plugin) again and plugin returned the old GCM token. I though I would get a
   new token. I sent notifications and app received notifications. That means token is not
   refreshed.

Problem is in iOS. It works fine in Android. Android returned a new token.

Plugin version: 1.8.4 (We are still using ionic 1. Cannot migrate to newer version right now)
iOS: tested in 8.4 and 11.0.3

Question: How I can force refresh GCM token in iOS?

Thanks :)

---

I checked the code and found that
Android:
When unregistering, token is deleted by InstanceID.getInstance(getApplicationContext()).deleteInstanceID();
but iOS:
[[UIApplication sharedApplication] unregisterForRemoteNotifications];

I Googled and checked how I can delete and refresh the token in iOS.
I found that I need to do this (code below) to delete and get a new token in iOS.

GGLInstanceID *iid = [GGLInstanceID sharedInstance];
GGLInstanceIDDeleteHandler deleteHandler = ^void(NSError *error) {
  if (error) {
    // failed to delete the identity for the app
    // do an exponential backoff and retry again.
  } else {
    // try to get a new ID
    dispatch_async(dispatch_get_main_queue(), ^{
       GGLInstanceIDHandler handler =
           ^void(NSString *identity, NSError *error) {
              if (error) {
                // failed to get the identity for the app
                // handle error
              } else {
                NSString *instanceID = identity;
                // handle InstanceID for the app
              }
           }
       [iid getIDWithHandler:handler];
    });
  }
}

[iid deleteIDWithHandler:deleteHandler];

(Refer https://developers.google.com/instance-id/guides/ios-implementation)

Question is how to do it without editing the plugin 1.8.4 version. May be I can create a custom plugin to delete the GCM token? Please help.

[malwatte]

I ended up in modifying the plugin version 1.8.4. I added some code to delete the InstanceID.
But this would be a nice to have feature in the plugin itself. Because there could be times we need to refresh the token.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[macdonst]

Look at PR #2131