AS3/AIR: IOStream Error when trying to upload files

Question

I'm making an AIR app in which the user drags and drops image files onto the stage, the app then uploads those dropped images to the site imgur.com, and then returns with links to the images (in XML format).

I am having two issues:

1. the program works successfully with a very small file, however anything larger (1mb or more), I get an IOStream error 2023. Imgur supports uploads of up to 10mb so I know it must be something on my end.

2. I would like to be able to drop multiple image files at once into the program, and have it upload all of them (either synchronously or asynchronously, it does not matter). Right now the program gives errors when I attempt to do this (something along the lines of the byteArray having to be greater than 0).

Below is the code in question which is giving me issues. (thank you for your help in advanced)

private function doDragDrop(e:NativeDragEvent):void
{           
    trace("doDragDrop() called.");
    var dropFiles:Array = e.clipboard.getData(ClipboardFormats.FILE_LIST_FORMAT) as Array;
    for each (var file:File in dropFiles)
    {
        switch (file.extension.toLowerCase())
        {
            case "jpg" :
            case "jpeg" :
            case "gif" :
            case "png" :
            case "apng" :
            case "tiff" :
            case "bmp" :
            case "pdf" :
            case "xcf" :
            trace("file Extension Check = passed");
            addImage(file.nativePath);
                break;

            //error handling for non-supported filetypes
            default :
                trace("ERROR: Unsupported File Type Detected!");
        }
    }
}

private function addImage(nativePath:String):void
{
    trace("addImage() called.");
    trace("NativePath is: " + nativePath);
    //var file:File = new File(nativePath);
    var file:File = File.desktopDirectory.resolvePath(nativePath);
    var ba:ByteArray = new ByteArray();
    var stream:FileStream = new FileStream();
    stream.open(file, FileMode.READ);
    stream.readBytes(ba);
    stream.close();         
    var loader:Loader = new Loader();
    loader.contentLoaderInfo.addEventListener(Event.COMPLETE, fileLoaded);
    loader.loadBytes(ba);
}

private function fileLoaded(e:Event):void
{
    trace("fileLoaded() called.");
    var bitmap:Bitmap = Bitmap(e.target.content);
    var bitmapData:BitmapData = bitmap.bitmapData;
    var png:ByteArray = PNGEncoder.encode(bitmapData);

    urlLoader = new URLLoader();
    urlLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
    urlLoader.addEventListener(Event.COMPLETE, onCookieSent);
    urlLoader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onSecurityError);
    urlLoader.addEventListener(IOErrorEvent.IO_ERROR, onIOError);

    var vars:String = "?key=" + API_KEY + "&name=name&title=title";
    var request:URLRequest = new URLRequest(UPLOAD_URL + vars);
    request.contentType = "application/octet-stream";
    request.method = URLRequestMethod.POST;
    request.data = png;
    urlLoader.load(request);
}

private function onCookieSent(e:Event):void
{
    trace("onCookieSent() called.");
    var res:XML = new XML(unescape(urlLoader.data));
    var resultsList:XMLList = res.links;
    trace(resultsList);
}

private function onIOError(e:IOErrorEvent):void 
{
    trace("ioErrorHandler: " + e);
    TweenLite.to(tv_mc, 2, {alpha:0.5, scaleX:1.0, scaleY:1.0, ease:Elastic.easeOut});
    // Handle error
}
private function onSecurityError(e:SecurityErrorEvent):void 
{
    trace("securityErrorHandler: " + e);
    TweenLite.to(tv_mc, 2, {alpha:0.5, scaleX:1.0, scaleY:1.0, ease:Elastic.easeOut});
    // handle error
}

//When the dragged object leaves the drop point, do this
private function doDragExit(e:NativeDragEvent):void
{
    trace("doDragExit() called.");
    TweenLite.to(tv_mc, 2, {alpha:0.5, scaleX:1.0, scaleY:1.0, ease:Elastic.easeOut});
}

Answer 1

after doing this:

var ba:ByteArray = new ByteArray();
var stream:FileStream = new FileStream();
stream.open(file, FileMode.READ);
stream.readBytes(ba);
stream.close(); 

you already have a ByteArray of the file/image. can't you just send this one...

private function addImage(nativePath:String):void
{
    trace("addImage() called.");
    trace("NativePath is: " + nativePath);
    //var file:File = new File(nativePath);
    var file:File = File.desktopDirectory.resolvePath(nativePath);
    var ba:ByteArray = new ByteArray();
    var stream:FileStream = new FileStream();
    stream.open(file, FileMode.READ);
    stream.readBytes(ba);
    stream.close();         

    urlLoader = new URLLoader();
    urlLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
    urlLoader.addEventListener(Event.COMPLETE, onCookieSent);
    urlLoader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onSecurityError);
    urlLoader.addEventListener(IOErrorEvent.IO_ERROR, onIOError);

    var vars:String = "?key=" + API_KEY + "&name=name&title=title";
    var request:URLRequest = new URLRequest(UPLOAD_URL + vars);
    request.contentType = "application/octet-stream";
    request.method = URLRequestMethod.POST;
    request.data = ba;
    urlLoader.load(request);
}