Push notification from Liferay not reaching to Apple/Android devices

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.3 CE GA4
• Fix Version/s: 6.2.X EE, 7.0.X EE, Master
• Component/s: Push Notifications
• Labels: None
• Branch Version/s:
  7.0.x, 6.2.x
• Backported to Branch:
  Committed

References this issue: https://issues.liferay.com/browse/LPP-26755

DESCRIPTION

Liferay Push 2.2.0 fails to send either Apple Push Notification or Android Push Notification (GCM / FCM) using the methods below.
STEPS TO REPRODUCE
Liferay Push - Version: 2.2.0

Assumptions for all test cases:

• Make sure that the iOS certificate is installed on Liferay (with Password / p12 file).
• Make sure that the configuration file for Android is created from google and incorporated in Android. Make sure that the server API key is saved on the portlet for Firebase.

A. Steps to replicate (iOS successful / Android Empty Payload):
1. Make sure that the device tokens for Apple and Firebase are generated and stored in Configuration -> Push Notification -> Device
2. Goto Configuration -> Push Notification -> Send Test Push. Type a message hit send.
3. The message is successfully delivered to iPhone (Apple) with correct content.
4. The message is delivered to Android with Empty Payload.

B. Steps to replicate (Android Payload Delivered / No iOS Message Received):
1. Make sure that the device tokens for Apple and Firebase are generated and stored in Configuration -> Push Notification -> Device
2. Goto JSON Web Service -> Push Notification -> sendPushNotification (For Example: http://34.209.10.176:8090/api/jsonws?contextName=pushnotifications&signature=%2Fpushnotifications.pushnotificationsdevice%2Fsend-push-notification-2-toUserIds-payload)
3. Enter ["CURRENT_USER_ID"] in the field of toUserIds and a json message on the payload (For Example:

{ "message": "Hello You have one new alert" }

). Hit Invoke.
4. The message is successfully delivered to Android (via Firebase) with correct payload.
5. No message is shown on iOS.
EXPECTED RESULTS
Message shown on both iOS and Android devices in both cases
ACTUAL RESULTS
Case a. Message shown on iOS but not Android. Case b. Message shown in Android but not iOS.