Flash :: Flex - Do Sessions With A Client
Jan 28, 2010
Since the Flash Player (or, more exactly, the URLLoader class) will not let you read HTTP response headers or cookies set by the server, and if you get hold of a session cookie through some workaround like reaching out to the browser and run JS, you can't send it to the server, because, among others, the Cookie header will be blocked. Now I'm building a Flex client against an HTTP API for my server product. I control both sides, so I can get get around the above limitations, now I'm wondering how. I see the following options:
include the session token in the HTTP payload include the token in the URL build my own HTTP client (... with blackjack, and hookers ...) in AS, using the Socket class I don't like (1), because I'm reimplementing functionality in my protocol that is already built into Struts, which I'm using to implement the server side. I then have to ensure that either both behave the same way, or turn off the usual way of session management and force other clients to use my protocol where they could just have the browser deal with it. I don't like (2), because I understand that there are security concerns with this, although I'm not too sure which
I don't like (3), because it's 2010 and tons of HTTP clients have been written by smarter people than me. So, are there other opportunities? Which of my "don't like"s do you reckon least severe? Are there ways to mitigate the problems I listed? For example, how insecure are session tokens in URLs really?
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Feb 22, 2010
How do I limit my amf sessions to flex over pyamf?
I have set up a pyamf gateway to that serves value objects that originate from a django admin panel, through sqlalchemy to my authenticated flex client. It's working great, however there is a problem. My sessions are persisting and clogging up the server, so after about 20 or so AMF sessions are authenticated, it refuses any more until I restart the server.
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Nov 17, 2011
I am thinking about porting my social netowrking site code to Adobe Flex / PHP and was wondering how does one go about handling sessions in this case. I would imagine Adobe Flex doesn't really know if a PHP session has been started or not therefore, I would have to research how to accomplish this. One idea I had was to created a session token string after a successful login and pass this token to each http request the user makes for data. E.g. [URL]. Each time a request is made to this page, a MySQL query is run to check if the token I passed in the url matches against the token created for that user during login. If this is true, then data is returned.
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Jul 6, 2011
As the title indicates the question is in regards to the service layer of a flex application. Specifically in a test case class. To call the services the user must first authenticate through an html/CF based page. Once that's done and the authentication has occurred the user is directed to the html page with the flex application embedded in. Once authenticated the server side CF code writes a cookie to the users computer. This cookie is then read by the flex app and is required for the flex app to make calls to the CF services.
The question is: how should this be handled in a test case class for the service class in the flex app? The following steps need to basically take place: use some account data to hit the server and authenticate, the cookie then needs to be written (which it will already), then the test case needs to pick up the session id from the cookie and pass it to the service call within the test case. That just all seems like too much for a test case class.
So, how is this type of thing usually handled. From what I gather it's typical for web service calls to require a session id like this.
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Jul 7, 2011
I think I inherited bad code, here's the deal: In my command, I create a local var for the remote object and then call a method on it. In the result, if there's no data, I start a timer. This timer broadcasts an event every 2 seconds that continually calls this command until data is returned. Then the timer is stopped.
What we're seeing is that the method returns data once, and then the next time it doesn't (dupe Flex sessions error). It basically alternates. If we click really fast, sometimes we'll get two to work in a row. At times, the Java dev is seeing these requests returned with different JSESSIONIDs. I believe this is causing the duplicate Flex sessions error. I'm using Cairngorm; here's the execute command.
public function execute(event:CairngormEvent):void
{
ruleName = (event as FetchReportEvent).ruleName;
var ro:RemoteObject = ServiceLocator.getInstance().getRemoteObject("quantRemoteObject");
if (model.guid != null)
[code]....
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Jan 15, 2011
I'm writing an application which uses cookie-based sessions for authentication. All was well until I tried to integrate the uploadify jQuery plugin into my site. I need uploadify to send the files to my upload.php file. When I check the existence of any preknown session variables in that upload.php script, I get nothing. I've tried print_r($_SESSION) and got an empty array.
I'm not sure if this a problem with my php sessions code or my jquery uploadify code. I'm somewhat new at both.
/** INSIDE JQUERY **/
$('.fileUploadify').uploadify({
'scriptData': {'filesUploaded':'1','PHPSESSID' : <?php echo
[Code]....
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Apr 28, 2011
We have a Flash site that integrates heavily with Facebook. When users sign up we get them to allow a Facebook app that ties into the site. This is done through the AS3 Facebook API library from Adobe. When users have done this, they should then be able to sign up, submitting some personal details and so on. The Flash sends this request to our PHP which then checks to see if the user is actually logged into Facebook, and has allowed our app. The problem we're having is that when a user goes to do this, the PHP facebook library says that the user is not logged in. If we then refresh the page and try signing up again, everything works fine.
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Mar 14, 2010
I want to push data to flex clients. I am talking about anywhere between 5000-15000 concurrent users, need to get data every time a currency is changed so that means lots of changes for lots of users.
I have been looking into WebOrb.net, but the performance seem very poor (100 users concurrent) for a product so pricy (we purchased a license).
So, I have to look into alternatives, I know there's fluorineFx but it seems no one is really using it for products and it lacks in examples and documentation.
My question is: what products can answer my needs (.net backend) and what are the performance I can expect out of these products?
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May 5, 2011
I'm a new grad, so please be kind. I'm working on validating input in a Flex DataGrid cell that the user can edit. The rows in the DataGrid are backed by an mx.collections.ArrayCollection that includes a [Bindable]Model that I wrote. I want to validate against a custom client-side Validator, if-and-only-if that passes I want to validate the input on the server. If client-side validation fails, I want to display the normal validation error (see image below). If server-side validation fails, I want to use the same sort of UI components to notify the user. The solution should not include any external framework (Cairngorm or PureMVC).
[Code]...
How do Flex programmers validate on the server, immediately after the valid client-side validation passes?
I realize it seems silly to search out this "synchronous" design and I hope someone has an answer to solve my problem with best practices. In my defense, the reason I want to validate on the server immediately following client-side validation is so that I'm using Flex's validation framework. If I get an invalid response from the server, I want to leverage the built-in UI components that Flex has to tell the user something is incorrect about his/her input.
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Sep 20, 2011
I'm creating some image uploader in Flex with client-side image processing. Processing consists of two steps:
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2. Converting resized image (represented by ByteArray in PNG32 with alpha-channel) to gray-scale PNG with bit-depth = 2 and no color-palette. Is there any existing library that is capable of second step? Something like libpng for C++, maybe?Edit:It seem I stumbled upon rarely encountered problem. However my descision was to create an AS3 class that is capable of converting bitmapData to 2bit grayscale PNG. I used standart PNGEncoder and PNG format specification (which is not so good as I expected) as basis.
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Jul 18, 2010
I am trying to send info using USLStream from flash client to JAVA server.Some of the info is Chinese so i have to use Unicode.
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Jul 11, 2010
I need to develop client server application that involve gaming. I have no experience in flash and I was reading about the AMF3 protocol that is compact and fast, is it better than xml/json for data exchange? Also I need it to be on port 80.
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Sep 16, 2010
My client is in Flash/Flex (game with chat) and it will be talking to a Java server. What is the best way (protocol / interface) for my Flash client to talk to my server? I heard about Flash Remoting MX, but it is a request / response mechanism. I could always request something and wait for asynchronous notifications from server. Then request again, implementing something like a Comet server.Anyways, what is the industry standard for this type of communication: Flash Client talking to Java server, supporting asynchronous "push" notifications from server.
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Nov 16, 2010
I wonder how can I download/save/write a file from my server to a client's computer using flash or flex.
Sign up
Sign in
Click on the ("FREE") button placed on the right of the page. (the
orange button)
[code]....
then you'll see a confirmation popup for the download, then you choose where do you want to save the file, and the flash movie saves the file!
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Jan 7, 2011
I built a prototype in Adobe Flex, they (customers) liked it. Everything was fine until they later told me that iPads / iOS needs to be supported too.I checked out Adobe's Packager for iPhone. We're evaluating that and we will know if it works out in a couple of days. (We need to get through Apple's red tape and certificates raj so this angle is delayed by a few days!)
There is a growing voice for using HTML5/Canvas as a technology platform itself. And despite being quite proficient in Flex, I think this makes sense.
I'm in need of a HTML5 library that can:
Render "widgets" i.e. containers with forms and components(this should be easy and possible using POHJC - Plain old HTML,JavaScript and CSS )Provide a Tree like control for laying out some data Provide a Canvas where data structures can be represented as basic shapes Provide drag and drop capabilities between Trees, Buttons and Canvas Provide some sort of Tab Navigator container (I guess JQuery works here) Interact with back-end services (JSON/XML calls will be okay, but mapping directly with back-end entities will be awesome!)Renders on latest versions of major browsers, Android OS and iOS (WebKit for mobile?)
I'm ready to give JQuery & JQuery UI a try. I looked at Sencha / ExtJS but it seems we need to maintain two code bases one for normal browsers and the other for mobiles (is that correct?)Single code base, I don't want to suggest to them that multiple code bases for the client need to be maintained. That's a last resort option and would lead to complete ruling out of HTML5 with Flash apps and native apps being developed.Canvas capabilities - I don't want to work with raw canvas and shape tags. This too is a last resort option. Is there any abstraction available?
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Jun 2, 2010
Trying to get data from php to swf using sessions, but have a bit of a problem. Here, I create the session
Code:
<?php
if(isset($_POST['action']) && $_POST['action'] == 'submitform')
{
$name = $_POST['name'];
[Code]......
I dont know if this is because i havnt placed it on the server yet, or if its something I need to resolve now?
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Jun 26, 2009
When I login a new session is generated. How can I later know for which login the session was generated? I am getting the session value, but how do I know which user the session is for and redirect him to that page?
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Feb 2, 2007
So I had been working on this issue where I couldn't get a swf to reload in the same state it was originally loaded. Well further testing leads me to believe that my Model class is being persisted over multiple sessons in the player. Here is my model class:
[Code]...
So when I fire up the swf the first time in the IDE's player, i get 'no previous instance' as you would expect, then I hit ctrl + enter to restart the swf in the IDE's player and I get 'destroying instance'. So this tells me that the Model instance is getting persisted over player sessions. Unless I am mistaken, and correct me if I am wrong, I would assume clicking ctrl + enter (i.e refreshing the swf in the player) would act like a new swf session.
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Nov 8, 2009
I'm working on a game using Actionscript 3.0 and Flash CS4 and I'd like to make it save a player's scores and achievements between sessions locally on their computer. I thought the best way to do this would be by using cookies, and I started looking for ways to use JavaScript from ActionScript to save and load that information.While I was reading the articles I found on the subject, they seemed to suggest there was another way of saving information between sessions using something built into flash directly. Does anybody know about this? I'm not even sure what it's called. Even better if I could get some straightforward code for setting and recieving data from cookies using JavaScript or some other method.
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Apr 5, 2011
am setting up multiple multicast sessions, i generated configurations for each session using a seperate stream name, IP address, port.
1) Is it possible to run multiple multicast session.From configuration, looks like we can, but need confirmation
2) How can i test these sessions using the default player ? or any sample player
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May 10, 2011
Is it possible to run a Flex client in IntelliJ internally and have it talk to a separately deployed server instance? The server's a java webapp. This will make developing, especially debugging, much easier. What I'm trying to avoid is having to rebuild and redeploy the webapp to get the updated Flex code in it. I want to just build flex and run it against the server.
The flex client is embedded in an HTML page on the server, so in production the users access the client by going to a web page. We're using GraniteDS if that's important.
Update
I'm managed to cobble something together, but it's ugly.I made a copy of our wrapper HTML page and fixed the links to refer to the SWF in target.I setup the IntelliJ run config to point to that HTML page.I set the 'Place SWF file in a local-trusted sandbox' to true
Hardcoded the {server.name}, {server.port}, and {context.root} values in the service-config.xml GraniteDS config file to localhost, etc.
I can mavenize #1, but #3's isn't really a permanent solution. That part is still a problem because I can't check this in.
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Oct 27, 2010
how can I find on fms server that client disconnected if if client disconnected due to power cut off. I client manually close the application then onDisconnect on server is called but if due to power cut off it does not called.
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Jul 21, 2011
I want to add the ability to have my flash game record the users progress then save to a database. That part is pretty easy, but how can I make it so the user can login and continue their game. I also wanting to know if it'll be better for the game progress to be saved with SharedObjects or with an SQL database. I would like it that the game could be played on any website and their data can still be accessed and played if that is advised. I am new to user sessions with AS3 and need pointers.
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Dec 23, 2010
I am in a situation where user gets the cars data from the database based on the selection and displays it in datagrid like below ( for example)
Company Model Year No
GM Chevy 2010 10
GM Chevy 2009 5
GM Pontiac 2010 12
Honda Civic 2009 12
and there will be a link next to datagrid to get Pie chart based on the data displays in the data grid . The pie graph should display grouping by company and the count . I mean for the above example that should give with two pie items , one for GM showing the number of vehicles ( in this case 3 ) and Honda showing the number of vehicles ( in this case 1 ).
I thought of getting it from the database by querying and grouping it .But here the problem is after getting the data above in the datagrid user can able to filter at client end ( By year or model ) and can say get graph . This time that should only display the graph for the data visible in Datagrid .Grouping on database for every operation is becoming expensive. Since we have already data available at client end , is there any way to group it at client ..?
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Aug 11, 2009
Is it possible to recover the HttpHeader information from a flex Client? I want to do the following:
User download the flex client from a web site
In each communication flex client catch the HttpHeader information in order to change (If it is necessary) the host information to be connected (For example in a HA configuration)
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Aug 9, 2011
I have a java server side project which contains JAX-WS web-services (using JavaEE 6 and the @WebService annotation).
Is there some kind of plugin that would allow me to generate Flex client stubs during my maven build ?
I have taken a look at enunciate, but it seems to generate only AMF client.
I've also tried to look at GraniteDS, but their doc seems a little opaque to me.
Notice my Flex project is compiled using flexmojos, which contains a flexmojos:generate mojo that should be able to generate domain object (however I don't understand how to say it to use domain classes from ANOTHER project, and not from a different folder).
So, is there any maven plugin that would allow the kind of feature described in this Adobe page ?
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Sep 3, 2011
I want to create an application that has these features
- At client side: Display a list of images, when user click on one image, data will be stored in MySQL database.
- At server side: Manage images used in client side, I can delete, add new images.
Is this possible for me to achieve this using Flex? And if it is able, will my output be 2 separate SWF files? And where can I find the materials to read on writing such applications?
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Nov 19, 2008
Can we perform client to client file transfer, client to server can be done by FileReference. but how do we do client to client transfer, for example if a user wants to send file to another user to whom he is chatting online.
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Aug 1, 2009
I made an application using Flex,php,mysql. Now to give it to a client, I am bundling this flex application with xampp. There are few problems with this approach :
1. Whenever the flex application runs, an xampp window also opens up.
2. The Apache port number, which I am giving to the client is fixed. Same for mysql port number.
What could be a better alternative to overcome these?
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Jun 1, 2010
I am new to Flex and needed some help setting up Web service client.I have a web service of method: public String printEchoStr(String str);I am facing problem while creating action script to call this service.I am getting error1067 : Implicit coercion of a value of type String to an unrelated ty generated. webservices:PrintEcho.I am not sure if this is the correct way.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"
xmlns:srv="generated.webservices.*"[code]...........
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