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AS3

Flash Error 5003 & 5005

Tuesday, August 18th, 2009

“5003: Unknown error generating bye code.”

“5005: Unknown error optimizing byte code”

You may find yourself receiving either of the above errors when working –in the Flash IDE– with FLA files that make use of large amounts of code. These two errors both stem from the same problem; Flash not handling an “Out Of Memory” error exception from Java (from the asc_authoring.jar file). This error will be apparent if compiling using the Flex SDK.

There are several possible solutions you can try to get around this error. Firstly, check that the Flash Optimiser in the Publish Settings dialog box is disabled (select Publish Settings and disable the “Reduce file size and increase performance” option under Script Settings), and recompile. In any other case where you are not getting a 5003 or 5005 error this option should be left enabled.

Another solution you can try, if disabling the Optimiser does not resolve the issue, is to delete the ASO files and recompile (Control -> Delete ASO Files and Test Movie).

Depending on the size of your project it is possible that these two solutions do not resolve the issue. If it is not possible to compile the project using the Flex SDK (which allows you to easily set the Java VM heap memory) you will need to set an environment variable on your system to increase the Java VM heap memory size. How you do this will depend on your system:

Windows:
Right click on My Computer -> Properties -> Advanced -> Environment Vars
Make a new var like this:

JAVA_TOOL_OPTIONS

and its value

-Xmx256M

Mac OS X:
Create the directory and file (if not already there) ‘Users/{your user}/.MacOSX/environment.plist’
Note: The folder will be hidden in finder unless you enabled the view of hidden folders.
The Easiest way to create/edit this file is by using RCEnvironment, which will handle the creation and management of the file for you.

Enter variable JAVA_TOOL_OPTIONS

and its value -Xmx256M

Now Logout/restart.

In our tests we were able to successfully compile with values of -Xmx128M and -Xmx256M. A value of -Xmx512M and higher gave the error “Error initializing JRE. You may need to reinstall Flash”. Your mileage may vary based upon your machine specifications, if you find yourself receiving this error simply reduce the amount of memory allocated to the Java VM heap and restart again. After following the above steps you should be able to compile your project once again with the Optimiser enabled.

N.B. YOU CANNOT RUN FLASH FROM SPOTLIGHT OR OTHER LAUNCHERS
For some reason, Spotlight ignores the environment.plist options. An issue has been logged with Apple regarding this, in the meantime be careful when launching Flash from Spotlight or other application launchers.

Posted in AS2, AS3, Adobe Air, Flash, Java | No Comments »

Amazon API

Monday, August 10th, 2009

Every request to the Amazon API needs to be signed by using HMAC-SHA signatures. The request needs a signature and a timestamp. “A signature is created by using the request type, domain, the URI, and a sorted string of every parameter in the request (except the Signature parameter itself) with the following format <parameter>=<value>&. Once properly formatted, you create a base64-encoded HMAC_SHA256 signature using your AWS secret key.” Amazon API [1]

The timestamp needs to be in YYYY-MM-DDThh:mm:ssZ Format.

Examples can be found in the Amazon API Docs [2]. For the encryption I used the as3crypto lib [3] and a solution of Brendon Wilson [4].

[1] http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/index.html?HMACAuth_ItemsRequired.html

[2] http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/index.html?rest-signature.html

[3] http://code.google.com/p/as3crypto/

[4] http://www.brendonwilson.com/

the final function:
public function aws_signed_request(p : Array):void{ var public_key : String = "Your Access Key ID"; var private_key : String = "Your Secret Access Key:";


  var requestBytes:ByteArray = new ByteArray();
  var hmacc:HMAC = new HMAC(new SHA256());

  var keyBytes:ByteArray = new ByteArray();

  var hmacBytes:ByteArray;

  var encoder:Base64Encoder = new Base64Encoder();

  var formatter:DateFormatter = new DateFormatter();

  var now:Date = new Date();

  var string_to_sign : String = "";

  var timestamp : String;

  var method : String = "GET";

  var host : String = "ecs.amazonaws.com";

  var uri : String = "/onca/xml";

  var pattern:RegExp = /%7E/gi;

  var signature : String;

  var params : Array = new Array();
  // Do not change the order of following commands

  params["AWSAccessKeyId"] = public_key;
  for(var i:int = 0; i

    params[p[i]] = p[(i+1)];

  }
  // creating Timestamp

  formatter.formatString = "YYYY-MM-DDTHH:NN:SSZ";

  now.setTime(now.getTime() + (now.getTimezoneOffset() * 60 * 1000));

  timestamp = formatter.format(now);
  params["Version"] = "2009-03-31";

  params["Timestamp"] = timestamp;

  params["Service"] = "AWSECommerceService";
  params.sort();
  //	cannonicalized_query

  var can_query : Array = new Array();

  for( var key in params ) {

    key = escape(key.replace(pattern, "~"));

    params[key] = escape(params[key].replace(pattern, "~"));

    can_query.push(key + "=" + params[key]);

  }
  var fin_query : String = "";
  // implode the query

  for(var i:int = 0; i
    fin_query += can_query[i];

    if(i != (can_query.length-1))

    fin_query += "&";

  }
  string_to_sign = method + " " + host + " " + uri + "\n" + fin_query;
  requestBytes.writeUTFBytes(string_to_sign);

  keyBytes.writeUTFBytes(private_key);

  hmacBytes = hmacc.compute(keyBytes, requestBytes);

  encoder.encodeBytes(hmacBytes);

  encoder.toString();

  signature = encoder.toString() + encoder.toString();

  signature = escape(signature.replace(pattern, "~"));

  var request : String = "http://" + host+uri+"?"+fin_query+"&Signature="+signature;
  somaLoader.add(request, null, SomaLoader.TYPE_XML);

  somaLoader.addEventListener(SomaLoaderEvent.COMPLETE, responseReceived);

  somaLoader.start();

}

Posted in AS3, Uncategorized | No Comments »

AS3 Traversing associative arrays

Monday, August 10th, 2009

var params : Array = new Array(); params["Version"] = "2009-03-31"; params["Service"] = "Test";

for( var key in params ) { trace(key + " => " + params[key]); }

Posted in AS3 | No Comments »

Migrate from AS2 to AS3

Tuesday, July 21st, 2009

These are a few links for those who haven’t migrated from AS2 to AS3 yet. Feel free to edit it and expand it as much as you want.

Adobe’s guide. Use it only when you think “where the hell is this AS2 stuff I’ve always used“
http://livedocs.adobe.com/flex/2/langref/migration.html

This is a pdf to boost your morale and see how as3 is not that different from as2.
http://www.adobe.com/devnet/actionscript/articles/as3_migration_cookbook/as3_migration_cookbook.pdf (PDF)

A tutorial to get started on the basics of AS3 (using FlashCS3):
http://www.senocular.com/flash/tutorials/as3withflashcs3/

Grant’s skinner workshop. A little bit more detailed/difficult than previous links.
http://gskinner.com/talks/as3workshop/

Worth a look through is also Kirupa’s ‘Tip of the day’, good to search through when you come up against problems with AS3:
http://www.kirupa.com/forum/showthread.php?t=223798

I hope that’s enough to start.

For almost anything else you also have:
http://www.kirupa.com/developer/flash/index.htm#ActionScript_Basics

And of course, you can ask us anything you need.
:]

Posted in AS2, AS3, Flash, reference, tutorial | No Comments »

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AS3

Flash Error 5003 & 5005

Amazon API

AS3 Traversing associative arrays

Migrate from AS2 to AS3