pushjack: Release v0.5.0

Pushjack v0.5.0 has been released.

It was a major release that improves the APNS send algorithm. There were also two backwards incompatible changes.

The APNS send algorithm has been modified to resume sending whenever an error response is encountered. Previously, whenever an error response occurred, an exception would be raised potentially before all notifications had been sent. It would have been up to the user to catch these exceptions and resume sending since any notifications sent to tokens after the error token would never be delivered. With this update APNS sending will handle error responses and restart sending from after the error token. All error responses are collected and raised once sending has been attempted for all tokens. Therefore, if an error is encountered during sending, an APNSSendError which contains information about the notifications that couldn't be delivered will be raised.

The second breaking change is that the APNS send argument priority has been replaced with low_priority=False. Previously, one had to pass in the appropriate priority value (either 10 or 5). Since there are only two possible priority levels, it made since to eliminate the raw value passing and instead convert to a boolean argument.

Please see the Upgrade Guide when transitioning from v0.4.0 to v0.5.0.

What is pushjack?

Library for sending APNS (Apple) and GCM (Android) push notifications.

It is Python 2.6+ and 3.3+ compatible.


Get it on Github and PyPI.



  • Add new APNS configuration value APNS_DEFAULT_BATCH_SIZE and set to 100.
  • Add batch_size parameter to APNS send that can be used to override APNS_DEFAULT_BATCH_SIZE.
  • Make APNS send batch multiple notifications into a single payload. Previously, individual socket writes were performed for each token. Now, socket writes are batched based on either the APNS_DEFAULT_BATCH_SIZE configuration value or the batch_size function argument value.
  • Make APNS send resume sending from after the failed token when an error response is received.
  • Make APNS send raise an APNSSendError when one or more error responses received. APNSSendError contains an aggregation of errors, all tokens attempted, failed tokens, and successful tokens. (breaking change)
  • Replace priority argument to APNS send with low_priority=False. (breaking change)

Bug Fixes



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