Apple Push Notification Service Update
November 4, 2019
If you send push notifications with the legacy binary protocol, we recommend updating to the HTTP/2-based APNs provider API as soon as possible. You’ll be able to take advantage of great modern features, such as authentication with a JSON Web Token, improved error messaging, and per-notification feedback.
The Apple Push Notification service (APNs) will no longer support the legacy binary protocol as of November 2020.