Monthly Downloads: 10
Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
Tags: Network APIs     Networking    
Latest version: v0.2.1.1

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Server-side push messaging from Haskell to various platforms (currently supporting iOS and Android).


Push notifications to android devices are sent via Google's Firebase service. To send push notifications via Firebase, you'll need to create a project and acquire a "server key."

To get your server key, go to the Firebase console and create or open a project. On the project settings page, there is a "Cloud Messaging" section. On that page you should be able to retrieve or create a "server key."

The server key should be passed to Network.PushNotification.Android.sendAndroidPushMessage.

To construct an android push message payload, have a look at Network.PushNotification.Android.Payload which provides a haskell datatype and JSON instances for Firebase Cloud Messaging payloads (as documented here).


Sending push notifications requires an "Apple Push Services" certificate and an Apple-provided device token.

Getting an APS Certificate

The APS certificate is produced in the iOS Provisioning Portal. Once you've generated the certificate, you can download it from the Provisioning Portal. It is usually named aps_production.cer or aps_development.cer.

The private key for the certificate can be extracted from Apple's Keychain utility as a .p12 file.

Once you have both the certificate and private key, the following commands can be used to convert the certificate and private key files into the format required by this library.

openssl x509 -in aps_development.cer -inform DER -outform PEM -out cert.pem
openssl pkcs12 -in key.p12 -out key.pem -nodes

Getting a Device Token

Device tokens are retrieved on the device itself by calling the @[email protected] method of the @[email protected] object.

For more information, please see Apple's documentation.


Originally based on a blog post by Teemu Ikonen, available here and packaged by David Fendrich as the "phone-push" library on hackage. That library was forked and updated and, eventually, became this one.