Pushy offers a notification service that uses Apple Push Notification Service for iOS devices, and the MQTT protocol for Android devices. For users located in China, Pushy offers delivery to AOSP devices due to Google services being unavailable or unreliable. The following methods are supported: device information, device presence, send notifications, status, and subscriptions. The Pushy API uses JSON for headers and responses.
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The Pushy NodeJS SDK by Pushy allows developers to send a stream of push notifications to their users. Optional device subscription to one or multiple topics is supported. The current version is 2.0.1.