Function prototype	alert_subscribe (session, endpoint , [type])
API Version	All

Subscribe to notifications emitted by the system by specifying the endpoint that will receive the notifications The format of the notifications that the platform can send are defined in ALERT WEB SERVICES Linkcare platform can send notifications by 2 channels: Callback URL : The system will send a POST HTTP request to the endpoint specified Push notifications: The system will send a Push notification to the client identified by endpoint. In this case the endpoint is used as an ID supported by the appropriate Push Notifications framework. The API function alert_post () can be used to send a notification to a specific user.
Input parameters:	*session: a valid session reference obtained by a call to session_init () endpoint: If the endpoint has ULR format (http[s]//...) it will be interpreted as a callback URL that will be invoked by sending a POST HTTP request. Otherwise it will be interpreted as a Push Notification Id. type: ("Firebase", "OneSignal"). Used when the endpoint refers to a Push Notification channel. It is used to decide which Push Notifications framework must be used to send the notification. Introduced in API version 2.7.15* "Android" is intended to be used in
Output parameters:	ErrorMsg: If any error occurs, then this value contains a description of the error translated to the current language ErrorCode: If any error occurs, then this value contains any of the standard ERROR CODES
Request sample:	alert_subscribe (“LCAAAAAAAAAAAAAAAAAAAAAAAA”; “http://lc2.domain.com/whatever”);
Response sample:	<?xml version="1.0" encoding="utf-8" standalone="yes"?> <ErrorMsg></ErrorMsg> <ErrorCode></ErrorCode>

Push Notification frameworks

Currently the Linkcare Platform supports 2 Push notification platforms:

Google Firebase: Used for Android Apps. Set parameter type="Firebase" to use this platform. Note that this platform does not support Push Notifications for Safari web browsers
OneSignal: Set parameter type="OneSignal" to use this platform. OneSignal gives support for almost all existing Operative Systems, Web browsers and applications

If you want to implement Push Notifications in your application, it is important to note that all notification platforms work on a 'per-App' basis. This means that Linkcare will have to register your Application in the corresponding Platform (or your domain name if you are using notifications for Web applications).

Once you application has been registered, Linkcare will provide you with an AppID the you will need to using when initializing the Push Notification support in your application.

Browser not supported