My Apple push notifications stopped with Java Apns stopped working

Question

Since the April 1st 2021, my Apple push notifications with java-apns stopped working, i.e my devices wouldn't receive push notification anymore, while my backend server using the java-apns library wouldn't throw any exceptions... I've checked my .p12 certificates and they have not expired, so I am quite unsure as to what's happening? Has anyone run into this issue?

Answer 1

As the java-apns github page says:

Warning

Apple will no longer support the legacy binary protocol after March 31, 2021. Java-Apns will stop working. See details in their announcement.

It is recommended to use Pushy instead, which supports Apple's HTTP/2-based APNs protocol.

So basically the library stop working, as it uses a protocol that us no longer supported and you can try migrate to Pushy or any other libraries.