Socket.io for Haskell folks

Transcript

1. Socket.IO for Haskell Folks
5. Real-time Applications
6. Regular HTTP
7. Polling
8. Long-Polling
9. EventSource
10. WebSocket
11. WebSocket
12. “TCP for the web”
13. PROS Bi-directional + Full-duplex ! Lower overhead ! Port 80
14. CONS Not widely supported ! Still a draft*
15. Socket.IO
16. asdf
17. “The cross-browser cross-device WebSocket”
18. Browser Support IE 5.5+ Safari 2+ Google Chrome 4+ Firefox 3+ Opera 10.61+
19. Transport Support WebSocket Flash Socket AJAX long polling AJAX multipart Forever iframe JSONP Polling
20. socket.emit(‘news’, ‘hey!’); ! ! ! Server
21. socket.on(‘news’, function (data) { console.log(data); // hey! }); ! Client
22. socket.emit(‘news’, ‘hey!’); ! socket.on(‘ping’, function () { socket.emit(‘pong’); }); Server
23. socket.on(‘news’, function (data) { console.log(data); // hey! }); ! socket.emit(‘ping’); Client
24. Originated from Node.js
25. Now also available in many other languages Erlang Java Lua Python Perl Go C++ C Objective-C Haxe Ruby PHP
26. Except for Haskell
28. socketio-0.1.0
30. socket.emit(‘news’, ‘hey!’); ! socket.on(‘ping’, function () { socket.emit(‘pong’); });
31. emit “news” [“hey!”] ! on “ping” $ emit “pong” []
32. Transport Support WebSocket (80%) Flash Socket AJAX long polling AJAX multipart Forever iframe JSONP Polling
33. Difficulties
34. Transport Support ಠ~ಠ
35. Transport Support WebSocket Flash Socket AJAX long polling AJAX multipart Forever iframe JSONP Polling
36. Transport Support WebSocket Flash Socket AJAX long polling AJAX multipart Forever iframe JSONP Polling
37. “Premature optimization is the root of all evil”
38. Monad Transformers ಠ~ಠ
41. ! KEEP CALM AND JUST USE IT
43. Iteratee I/O ಠ~ಠ
48. String/Text/ByteString ಠ~ಠ
50. {-# LANGUAGE OverloadedStrings #-}
51. Open Source Community ಠ~ಠ
54. Originated from Node.js
55. Cabal Hell ಠ~ಠ
56. > cabal uninstall cabal: unrecognised command: uninstall (try --help)
58. cabal-dev?
59. LIVE DEMO
61. http://banacorn.org:3000
63. TODO
64. cabal-dev?
65. banacorn/socket.io-haskell ! ! ! ALL CONTRIBUTIONS ARE WELCOME!
66. THANKS! Questions?