Hi Andre,
Thanks for the details. Really good piece of information. Here are my understandings and analysis to startwith going forward.
1.APC will work until user agent is active(logged) otherwise notification will be missed. So only for online scenarios as suggsted.
2.Could you please give more thoughts on "notifications used by SAP Gateway are of an "offline" type " ? Does this mean user goes offline and once return online will the notification pushed again ? An example or an use case would be ideal to hear from you.
3. There is no single mechanism to handle notification which can handle both mobile devices as well as desktop browsers(modern). However as of now we can make use of below frameworks.
APC(Web sockets) or Gateway notifications can be used to target desktop browsers provided the user agent is active. i.e.,Web page has to be open and the user is logged in.
Gateway push notifications along SAP Mobile platfom (Android (GCM), Apple (APNS), and Blackberry (BIS/BES) is suitable for mobile scenarios.
Also i came across this interesting article discussing about push notifications using Push API / Notifications API / Service workers for HTML5 browsers.This allow sending a push message and showing a notification regardless the web page is open or not.
http://updates.html5rocks.com/2015/03/push-notificatons-on-the-open-web#disqus_thread
I will do some reseach on these advanced topics and will try to integrate with SAP Gateway framework. Hopefully i will share my analysis in 2 or 3 weeks.
Pleased suggest if you have any thoughts to share. Thanks for the help Andre.
Regards
Prabaharan Asokan