JavaScript :: Flex Hack For Authenticated File Upload
Oct 27, 2011
Does anyone know the file upload hack for Flex, which will allow files to be uploaded to authenticated web services via multipart form post? In this bug report from the Adobe site, a user reports: Flash isn't cross-browser compatible if this feature only works via Javascript hacks. So far, I've been unable to craft such a hack. I'm unsure what to do next. Here's what I've tried so far (all have been unsuccessful or impossible).
Set cookies on url
Pass cookies to Flex URLRequest
Create hidden html form in javascript to post file
Is it possible to pass file names from a running Flash application, which only purpose is to enable multiple-file-selection, to a JavaScript application which handles upload of all files to the server?I have examined various Flash upload solutions (like SWFUpload, Uploadify, etc.) and none of them meets my needs. I want an easy to implement solution (like Uploadify) which also lets me specify various parts of the HTTP request.
The reason I need this is because my upload form uses session cookies (for user authentication) and an CSRF token both passed to the server when uploading files.Is it technically possible to pass filenames (+ paths) to a JavaScript application which then handles the upload?
Is there any "mainstream" library used for this purpose? Commonly spread, well maintained, documented etc.I found these (using flash):
Uploadify - not many releases, latest 12/2010, no documentation (!) SWFUpload - latest release 03/2010, documentation fancyupload - looks buggy.
phpfileuploader - looks heavyweight, and looks commercial (?) I cannot read the licence (you can download it but are you allowed to use it forever without paying?) plupload New version of pure javascript (no flash) Valums' ajax upload claims to handle file size limit and progress bar, which is quite suspicious to me: these features require to guess the file size before the upload, which seems impossible in javascript (look also here). Or can it work?
On a webpage, is it possible to split large files into chunks before the file is uploaded to the server? For example, split a 10MB file into 1MB chunks, and upload one chunk at a time while showing a progress bar?
It sounds like JavaScript doesn't have any file manipulation abilities, but what about Flash and Java applets?
This would need to work in IE6+, Firefox and Chrome. Update: forgot to mention that (a) we are using Grails and (b) this needs to run over https.
I'm looking for a multiple file upload button. the ones I've found areswfuploaduploadifyI want to integrate it in a django app. ATM the only one which is working without any problems and is in widespread use seems to be swfupload.
Basically I'll be working with large XML files (approx. 20 - 50 MB). These files needs to be uploaded on a server.I know it isn't possible to touch the files with javascript, nor to implement HTTP compression on the client-side.
My question is that if any solution exists (flash / action script) that compresses a file and has a javascript API? The scenario is this:
Trying to upload 50 MB XML file Before upload a grab it with Javascript and send it to the compressor.Upload the compressed file instead of the original one.
I'm looking for multiple file upload component with alternative ways.I need HTML5, Flash and normal upload support, depended by device.I don't like FancyUpload, because it uses mootools and mootools is very big library.Also I can't use jQuery, because I'm writing on Ext js and it's not good idea to use two big library like jQuery and Ext js.
I am trying to create a multiple file upload flash application to be called from an External Interface, but it isn't working.
AS3:
var fileRef:FileReferenceList; ExternalInterface.addCallback('selectFiles', showDialog); function showDialog()
[Code].....
When I run the script and comment out the fileRef parts and uncomment the alert call, it shows the alert, also when I comment out the ExternalInterface call, leaving only the fileRef parts, it shows the file upload dialog.
When I run it as intended, I get the following error:
I have an upload form for an image. The user clicks browse and selects a file. How can I get the image dimensions the moment the user selects the file (before the file is even uploaded to the server). It obviously has to be something client-side with maybe javascript/jquery or flash/flex (prefer js//jquery though), but can either of them do this? This is the code I'm using to tie into zozo's getImgSize() function, but it gives me 0*0 as size.
Almost everything is in the title : Here's what I'd like to do :A nice html page with a php authentication process (http first then http**s** & so on) Launch a flex app which knows (I don't know how (this is the actual question !)) the user has already been authenticated and display his/her stuff he/she has to do for the day (or whatever...).
Of course if someone try to call directly the flex app I would display an "authentication error" message and then redirect to the authentication page.I'm sorry for my English which is perfectible.I was thinking about the session cookie : first authenticate then ass a variable on the server side, something like :
my listener.onComplete = function(selectedFile:FileReference) is fired without any file in the upload dir. if the file is small and I wait a bit I can see the file (through FTP) coming up on the server, but most of the times the "onComplete" if fired without any file being saved.
can I add something to this php code to make sure the file is uploaded?
I am trying to upload files to my server using a flex program but the swf files are not being uploaded. So I tried to upload other file types such as png, jpg, txt, xml and all of these upload without a problem but swf will not upload.
MXML File: <?xml version="1.0" encoding="utf-8"?> d {
Any best way to upload the image file by using Flex 4 and PHP. I have searched online but most of them are using Flex 2 or older version. I am just curious if there are any new ways to do it. I just found a good one here... [URL]
I need to create an application where I can add files for upload. As I add items for upload, a progressbar should be displayed along with each item added. And when I click for file upload, the progress of file upload for each file should be reflected in the progress bar. The progress should use the function like.[code]
I would like to know how to upload a file from ActionScript 3 (From a FLEX Application) to a Dot Net Back End, maybe to an ASHX file, an ASPX file or similar and using C# as core backend language.
I want to upload larger than 100 MB local file and then send it to remove Java server.
I got these possible alternatives:
Use FileReference Flex class, which is not recommended for files larger than 100Mb, and hope that the application will not crash. Slice the given file to small parts, then send them. For me, this seems pretty harsh decision.
The question: Are there some Flex library which allows sending larger files than 100Mb?
If the answer is NOT, are there some 3rd party libraries for the same thing?
If not, are there some 3rd party libraries for 'slicing' files and sending them asynchronously to server?
EDIT: If I sliced the file to parts, how large they are supposed to be (for proper hash check)?
I have now ran into Flex Fileupload problem on ssl as many others have. I simply get an IOError, no other information as to what caused the error was given, ssl handshake or something else. How do I nail down the cause of the error? I tried using the ';jsessionid=' trick, still no luck. FYI, I am running on local https server, with self signed cert. Everthing works fine without ssl. With ssl, it only works on IE (FF, Chrome, Safari fails on https). With other browsers, server doesn't even get the request.
I'm trying to perform a file upload using a FileReference from a Flex app running in Firefox 4. However when I attempt to call the upload() method, the Filereference throws an IOError with the following Error #2038: File I/O Error. URL: [URL] If I don't explicitly add a listener for the IOErrorEvent, then I get a Flash player popup stating SecurityError: Error #2000: No active security context.
The request doens't even hit my server (I can verify by placing breakpoints in the Java code and watching the HTTP Requests that go out using HTTPFox), so it seems to me that this is a client side issue (right?). I've done some searching for the problem on google and the suggestions included wrapping the upload() call in a timeout/callLater, and attempting to attach the sessionId to the request (since Firefox creates a new thread for the upload and doesn't attach the proper cookies). Neither of these approaches has worked for me. I don't experience this problem with Internet Explorer, only Firefox.
I am trying to upload the files to the remote server using PHP with Flex interface. If it's not localhost, it shows the security error. I have already put the crossdomain.xml in the tomcat web app root directory to allow all the domains. However, the security error is still shown when I tried to upload the file.
I have a flex app that allows the user to upload a file.The flex side uses the FileReference.upload method that goes to an .aspx page that handles the upload. It works only intermittently when I have IIS set to integrated windows authentication.That said, for testing purposes,I wrote a separate aspx page that does a file upload and this always works.I'd like to leverage the file import,though, within the nice looking flex app and not kick off a new webpage for a file upload.In looking at the IIS logs I have a hypothesis as to what's happening, and want to know if someone has full understanding as to why it may only intermittently work and can confirm or deny this: Flex' FileReference upload guts does whatever it does on the client then initiates a POST request to my .aspx page.On the times it failes, the IIS logs state that IE didn't pass the credentials so denies the request then sends a 401 response.
I don't get this 401 response on the flex side even though I'm listening for HTTP status codes (flash bug?).A new request is somehow immediately made to perform the upload again (it's not my code). I'm inferring this by looking at the IIS lgos which shows a second POST right after the previous one, only this time the user credentials are sent through, but the kicker is that the file the user uploaded is not uploaded this time. I infer this by the fact that the IIS logs show 0 bytes are posted, whereas the previous 401 request show a lot of bytes are POSTed.On the times it does work, what happens is that the first request for the HTTP POST the FileReference makes so happens to send the windows credentials along, so the client is not challenged.
For For some reason, I'm not getting any result returned to me when uploading a file to my server. I'm using a php script, the file gets sent, gets uploaded, but I can't get the return result.
I am firing these event listeners: fileRef.addEventListener(ProgressEvent.PROGRESS, fileRef_progress); fileRef.addEventListener(Event.COMPLETE, fileRef_complete);
I am building an Adobe AIR app and integrated an FTP client for file transfers. But I found out that maximum file upload size is 100 MB. I need to transfer bigger files
