Problem with Parameters

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Amazon S3 returns Content-Type of all uploaded files as binary/octet-stream. Therefore, these files is being downloaded instead of shown on browser window. Unfortunately, it is not available to fix it.

Edited by user Tuesday, September 28, 2010 2:49:21 PM(UTC)  | Reason: Not specified

Our developer have fixed it. You should add Before Upload event where you will add field Content-Type with value image/jpeg:

   function Before_upload() {
    getImageUploader('ImageUploader1').AddField('Content-Type', 'image/jpeg');
   }

Also, it is required to put additional field in the Policy, which is located in AmazonS3Helper.cs file:

[ 'starts-with', '$Content-Type', '' ]

Please note that this resolution is suitable to use for Image Uploader which imbed with JavaScript library only, but not with ASP.NET control nor PHP library.

Sorry for my fault.

You should put additional field in static function construct_policy($bucket, $expiration_date, $acl, $key) function:

  static function construct_policy($bucket, $expiration_date, $acl, $key) {
    // See about policy construction
    // http://docs.amazonwebservices.com/AmazonS3/2006-03-01/dev/HTTPPOSTForms.html#HTTPPOSTConstructPolicy
    $expiration_date = gmdate("Y-m-d\TH:i:s.000\Z", $expiration_date);
    $policy = "{ 'expiration': '$expiration_date',
                'conditions': [
                  { 'acl': '$acl' },
                  { 'bucket': '$bucket' },
                  { 'success_action_status': '200' },
                  [ 'starts-with', '$"."key', '' ]
		          [ 'starts-with', '$Content-Type', '' ]
                ]
              }";

    // Encode policy UTF-8 bytes using Base64 and return.
    return base64_encode($policy);
  }

It is located in AmazonS3manager.php file.

As for BeforeUpload event. This event is located in iuembed.AmazonS3.js file (\Aurigma Cloud Media Manager\Aurigma Cloud Media Manager\admin\assets\). You should add this line in the AmazonS3Extender.prototype._control$BeforeUpload = function() method:

AmazonS3Extender.prototype._control$BeforeUpload = function() {	
//…… Code……
var iu = getImageUploader(this._writer.id);
iu.AddField('Content-Type', 'image/jpeg');
//…… Code……
}

Please let me know if you have any additional questions about it.

It was my fault. Sorry for this.

There is not comma after [ 'starts-with', '$"."key', '' ] field. Please add comma like in these lines:

[ 'starts-with', '$"."key', '' ],
[ 'starts-with', '$Content-Type', '' ]

Our developer made changes in iuembed.AmazonS3.js and AmazonS3manager.php files. Tests shown that it worked okay - images were shown in the browser window but not downloaded.

You can find these files in the attachment to this post. Please download them and replace yours files with the new ones.

If you have any problems, please let me know about them.

File Attachment(s):

AmazonS3.zip (7kb) downloaded 5 time(s).

You are right about the reason of error. Thanks for your comment.

If you have any questions or problems I will be glad to assist you.