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Socket.io for Haskell folks

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Avatar for Ting-Yen Lai Ting-Yen Lai
December 08, 2013
Programming
1.1k
2

Socket.io for Haskell folks

Avatar for Ting-Yen Lai

Ting-Yen Lai

December 08, 2013

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Transcript

  1. Socket.IO for Haskell Folks

  2. None
  3. None
  4. None

  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

  27. None

  28. socketio-0.1.0

  29. None

  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

  39. None
  40. None

  41. ! KEEP CALM AND JUST USE IT

  42. None

  43. Iteratee I/O ಠ~ಠ

  44. None
  45. None
  46. None
  47. None

  48. String/Text/ByteString ಠ~ಠ

  49. None

  50. {-# LANGUAGE OverloadedStrings #-}

  51. Open Source Community ಠ~ಠ

  52. None
  53. None

  54. Originated from Node.js

  55. Cabal Hell ಠ~ಠ

  56. > cabal uninstall cabal: unrecognised command: uninstall (try --help)

  57. None

  58. cabal-dev?

  59. LIVE DEMO

  60. None

  61. http://banacorn.org:3000

  62. None

  63. TODO

  64. cabal-dev?

  65. banacorn/socket.io-haskell ! ! ! ALL CONTRIBUTIONS ARE WELCOME!

  66. THANKS! Questions?