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Why does Pushkit require a separate Voip certificate when the APNS Universal Client SSL certificate certificate was introduced?

Just a little confusion. Why do we need a separate VoIP service certificate for Pushkit when we have SSL Universal Certificate for APNS that supports the main application, voip, etc.

According to recent Apple docs

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If my application supports several topics (voip / non-voip), is it not better to use a single SSL APNS certificate, rather than separate certificates? It also ensures that the same connection (APNS Provider to APNS) can be used to deliver both Voip Push and Standard Push.

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2 answers

No. Universal will work with both APNS and PushKit. Your server signals what it wants by setting the appropriate topic in a push notification.

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According to the apple docs ,

There are many advantages to using PushKit to receive VoIP signals:

  • The device is woken up only when VoIP clicks occur, saving energy.

  • Unlike standard push notifications, which the user must reply to before your application can perform an action, VoIP pushes your application directly to the site for processing.

  • VoIP outputs are considered high priority notifications and delivered without delay.
  • VoIP outputs may include more data than what is provided by standard push notifications.
  • Your application will automatically restart if it does not work when receiving a VoIP signal.
  • Your application is provided with runtime to handle clicks, even if your application is running in the background.

Articles 2-6 are the advantages of VoIP over APN, but they are not suitable for conventional applications. Therefore, they must be separated.

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