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 Facebook Application architecture and Adobe Flash Understanding the architecture of applications built on the Facebook and Flash Platforms

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8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 1/19

 

Facebook Application architecture and Adobe Flash

Understanding the architecture of applicationsbuilt on the Facebook and Flash Platforms

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 2/19

 

Session Highlights

Facebook's REST Interface The three facebook rendering modes

FBML

IFrame

XFBML

Flash

Flash FBML

Flash IFrame

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 3/19

 

Facebook's REST Interface

Not a real RESTful interface No full use of CRUD

Requires session keys

Not resource oriented Server gateway is located at

http://api.facebook.com/restserver.php

Most calls are using HTTP GET Replies with XML (default) or JSON

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 4/19

 

Facebook's REST Interface

Loginhttp://api.facebook.com/restserver.php?v=1.0&  API Versionapi_key=...& Your API key call_id=...& Call ID, incrementalsig=...& Current call signature (MD5)method=auth.createToken  Method name

Notificationhttp://api.facebook.com/restserver.php?notification=Text&  Notification textmethod=notifications.send&  Method namecall_id=...& Call ID, incremental

sig=...& Current call signature (MD5)type=app_to_user&  Notification Typeapi_key=...& Your API key v=1.0  API Version

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 5/19

 

FBML Application

Based on XML markup

Simple to learn

Rapid application development

Surprisingly good documentation

Not a lot of flexibility

No control over page content (CSS, JS/AJAX)

Bad performance

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 6/19

 

FBML Application

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 7/19

 

IFrame Application

Maximum control over page content Minimal learning curve if you have past

experience

Faster user experience than FBML

Difficult to use the FBJS API

Minimal access to Facebook widget set

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 8/19

 

IFrame Application

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 9/19

 

XFBML

Made for external applications usingFacebook Connect

Provides a way to render Facebook widgets

on IFrame applications

Requires heavy knowledge in JavaScript

Subject to XSS attacks if used incorrectly Not all of FBML widgets are available

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 10/19

 

Facebook Flash Applications

Facebook Flash API officially supported (AS3) Richer, more engaging user experience

3D is possible using Papervision3D

Still need server side code for authentication

Debugging is complicated

Insecure assignment of keys – avoidable butdifficult.

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 11/19

 

Facebook Flash Application

There is no streight-forward way to use flashin Facebook applications

Still needs PHP to perform applicationauthentication to the facebook API, otherwise the

application will not get privilidges Flash API needs to authenticate against

Facebook as well

Two rendering methods have differentimplications on how your Flash applicationperforms

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 12/19

 

Flash Application: FBML

Easy and quick to set up and run

No control over embedding, but Facebook

does the dirty work for you Limited JavaScript access through FBJS

No fullscreen support

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 13/19

 

Flash Application: FBML

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 14/19

 

Flash Application: IFrame

Requires more time to set up

Full control over embedding code

Fullscreen support is freely available

Full JavaScript communication between theFlash application and the Iframe

Full control over Flash session variables –Facebook's session variables must be passed

Facebook requires you to check for aspecific Flash version (v9.0.115 and up)

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 15/19

 

Flash Application: IFrame

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 16/19

 

Flash is insecure

If you build it, they will come API and Secret keys are stored plain text in

the SWF file, measures exist to bypass it

(IFrame mode only) User input is 'dirty' – always make the server

verify the input.

Bejewled Blitz test case

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 17/19

 

Additional API Resorces

REST API Refrencehttp://wiki.developers.facebook.com/index.php/API

Facebook Signature Authenticationhttp://wiki.developers.facebook.com/index.php/Verifying_The_Signature

Flash API pagehttp://code.google.com/p/facebook-actionscript-api/

Flash API Documentations 

http://facebook-actionscript-api.googlecode.com/svn/release/current/docs/index.html

Flash Examples (FBML only, insecure)http://www.socialgamefest.net/sessions/flash-fb-demos.zip

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 18/19

 

Questions?

Q & A

8/9/2019 Facebook Flash

http://slidepdf.com/reader/full/facebook-flash 19/19

 

Facebook Application architecture and Adobe Flash

Liran NunaSocial Game Fest

This presentationhttp://www.socialgamefest.net/sessions/facebook-flash.pdf 

[email protected] (I don't bite)