View source for WebAPI/Push/Requirements

== Push Project Requirements ==
<strike>
* No open TCP sockets
** In order to reduce network load, clients should not be required to hold a TCP socket open in order to receive notifications.
** Network operators should be able to use UDP broadcast (or other standarized mechanism, like WapPUSH, SMS) to 'wake up' client who then should establish a TCP connection to Push Server.</strike>
* No continuously open TCP sockets on mobile devices (previous requirement obsoleted by WebRTC new server initiated connection requirement)
** Connection between provider proxy to the Push server and the device will be determined by the provider. 
** Provider must allow proxy to hold open a proxied socket to the Push Server, and must relay served notification alerts to devices in a timely manner.

* Multiple connections (signal versus signal+data)
** Push system should not require a second TCP connection for data/notification fetching
*** Mozilla believe that this may be a premature optimization.

* Easy-to-use API
** A design goal for *all* web apis.
** Default should be safe, and ensures end to end privacy of data
** Must not require applications to do their own crypto

* Guaranteed delivery
** Push system should guaranteed a timely delivery of notification
** Push system should be able to recover from data center loss

* Data privacy
** Push server should not be able to inspect application private data
** No disclosure of personal identifiable info to application (e.g.  MSISDN)

* Push system scalability
** Push system must be able to be scaled to tens of millions.
*** Order of mag smaller than apple or android's system.
** System must be allowed to support multiple (and possibly federated) push servers


Nice-to-have features:
* Multicast notifications (e.g. all instance of the same user), broadcast (e.g. all instances of the app) through a single request from app server to the push server

* Special type of notifications with real-time requirements (e.g. notification of an incoming VoIP call) which are delivered with minimized delay.

Non Goals:
*

[[Category:Web APIs]]