« Actionscript splat (argument unpacking)
Freezing gems with Gem.use_path »

Memory usage during file upload in AIR

Uploading files in AIR is a little bit problematic these days.

Here is the code:

<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" showStatusBar="false" 
  initialize="onInitialize(event)">  
 
  <mx:Script>
    <![CDATA[
 
      import com.rwnage.s3.service.S3PostOptions;
      import flash.events.Event;
 
      public function onInitialize(event:Event):void {
        var accessKey:String = "0RXZ3R7Y034PA8VGNWR2";
        var bucketName:String = "rwnage_test";
        var objectName:String = "test_file";
        var contentType:String = "application/octet-stream";
        var secretAccessKey:String = "[PUT YOUR SECRET ACCESS KEY HERE]";      
 
        var postOptions:S3PostOptions = new S3PostOptions(bucketName, objectName, accessKey, 
          { contentType: contentType });
 
        var policy:String = postOptions.getPolicy();
        var signature:String = postOptions.getSignature(secretAccessKey, policy);
 
        html.htmlText = '<html><body> \
          <form name="upload" action="http://' + bucketName + '.s3.amazonaws.com/" method="post" enctype="multipart/form-data"> \
            Key to upload: <input type="input" name="key" value="' + objectName + '" /><br /> \
            Content-Type: <input type="input" name="Content-Type" value="' + contentType + '" /><br /> \
            <input type="hidden" name="AWSAccessKeyId" value="' + accessKey + '" /> \
            <input type="hidden" name="Policy" value="' + policy + '" /> \
            <input type="hidden" name="Signature" value="' + signature + '" /> \
            File: <input type="file" name="file" /> <br /> \
            <!-- The elements after this will be ignored --> \
            <input type="submit" name="submit" value="Upload to Amazon S3" /> \
          </form></body></html>';                                                     
      }
 
    ]]>
  </mx:Script>
 
  <mx:HTML id="html" width="100%" height="100%" paddingLeft="20" paddingTop="20"/>
 
</mx:WindowedApplication>

No I don’t normally use mx:script tags, its a test case.

Eventually it malloc fails and crashes. This issue is Mac only and also occurs during a FileReference (or File) upload.

Tags: , , ,

This entry was posted on Saturday, March 29th, 2008 at 12:47 am and is filed under AIR, Flash. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “Memory usage during file upload in AIR”

  1. bryanl Says:
    March 4th, 2008 at 6:05 am

    Hey good find. I wrote my first *real* air app the other day, and I wondered why it was doing this.

  2. steve Says:
    August 14th, 2008 at 9:42 pm

    Hi, where do I find this package:

    import com.rwnage.s3.service.S3PostOptions;

Leave a Reply