Full-duplex cloud app with WebSocket

Slide from my talk "Full-duplex cloud app with WebSocket" at pragma conference 2013(http://pragmamark.org/eventi/pragma-conference-2013/#speakers_hook) about how to create iOS app that communicate in full-duplex way with the cloud (using WebSocket and socket.io)

Code: https://github.com/lukabernardi/RealtimeLocation

Transcript

1. Full-duplex cloud app
   with WebSocket
2. @luka_bernardi Luca Bernardi
3. “Everything goes through an API, 
 we are functioning 
 with cloud app” “Mobile is not Different” https://vimeo.com/61044805
4. Document vs. Stream Paradigms
5. Document Paradigm Built around request/response 
 paradigm of HTTP
6. Stream Paradigm Instantly update your content as things happens
7. What we are going to build
8. Hey, what about old good BSD socket?
9. “No App is an island” Not suitable for web applications
10. Abstraction Wouldn’t be nice to have an 
 event-based layer of abstraction?
11. Abusing HTTP Polling Long Polling Streaming
12. Meet WebSocket ! Independent TCP-based protocol that enables bidirectional, message-oriented streaming of text and binary data between client and server.
13. Server side [JS/Node.js] Socket.io (http://socket.io) [Python] Tornado (http:// www.tornadoweb.org) [Ruby] em-websocket (https:// github.com/igrigorik/em-websocket) [Objective-C] RockemSockem (https:// github.com/joshaber/RockemSockem) http://www.pusher.com http://www.pubnub.com https://www.hydna.com Comprehensive of realtime web technologies: https://github.com/leggetter/realtime-web-technologies-guide/blob/master/guide.md Self-Hosted Hosted
14. Socket.io Socket.io > WebSocket Abstract the transport mechanism
15. Event/Message based
16. Heartbeat By sending a heartbeat at a predetermined interval the client informs the server 
 that it's still there.
17. Rooms Partitioning of the connected clients.
18. Show us some code!
19. Server Code
20. Client libraries AZSocketIO (https://github.com/pashields/AZSocketIO) Socket.IO-objc (https://github.com/pkyeck/socket.IO-objc)
21. Client Code
22. Use Case Chat / Messaging Real-time geolocation Stream of event/news Real-time collaboration Games
23. Think different
    your API Photo by Héctor García (http://www.flickr.com/photos/torek/7109339349/)
24. Question?