Real-time data push from server to iOS device WITHOUT APNS [closed]

开发者_开发问答 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 11 years ago.

I'm building an iOS app which needs real-time updates from the server, and I'd like to accomplish this without polling.

Does anyone know of technologies, tools, products or libraries which would facilitate this functionality?

---

Pusher (who I work for) has an Objective-C library and a REST API (along with a number of libraries) that would let you push realtime updates from your server into an iOS application.

I've also compiled a list of realtime technologies in which I'm sure you'll also find technologies that meet your requirements.