Discussion
Push Notification Overview
Notifications
Intended for user
Certificate required
Can be disabled
Remote vs. Local
Local - schedule by the app on device
Best example is Reminders app
Schedule by
elapsed time or exact time
location based
Remote - come from your server
Actions
Interactive Notifications
Categories
Text Input
New type of “Action”
Behavior is “.textInput”
APNS (Apple Push Notification Service)
Device token created by APNS, need to store on server, associated with particular client app
Payload must include aps, but can also include custom values, as well
Payload “aps dictionary”: alert (string or dictionary), badge, sound, content-available, category
Payload alert dictionary: title, body, title-loc-key, title-loc-args, action-loc-key, loc-key, loc-args, launch-image
Silent notifications (content-available == 1) wakes your app in the background so that you can fetch data, etc.
Feedback service, how to discover tokens that are no longer active
Device tokens are 32 bytes, may be increasing to 100 bytes soon
New provider API released in 2015
HTTP/2
notification requests to APNS get a response
multiplexed
binary
Notification requests
POST
json
Notification responses
200 OK
400 BAD REQUEST with json payload and reason
Instant Feedback
Allows you to learn about inactive tokens in the notification response via 410 status code in the response
Simplified Certificate Handling
Now one certificate for all push actions
Push notifications payload size increased from 2KB to 4KB
