Jnlp File Seems To Be Outdated

The concept of a signed JNLP file is described in the JNLP specification, section 5.4.1, 'Signing of JNLP Files'. These restrictions are necessary for security reasons. The requirement that the JNLP file be signed in order to specify non-secure command-line arguments ensures that the original developer of the applet selected the command. But when I hit the big PLAY button and double-click the file that was downloaded, I get this. You are using an outdated client (3.94-7462). Edit: Nevermind. Now it seems to be working, and it started downloading the client.

FULL PRODUCT VERSION: java version '1.5.0' Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64) Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode, sharing) ADDITIONAL OS VERSION INFORMATION: Microsoft WIndows 2000 Version 5.00.2195 A DESCRIPTION OF THE PROBLEM: Webstart seems to keep using the old jnlp file after the first time it encounters a problem with a bad href in the jnlp file. After fixing the href in the jnlp file on the webserver, webstart keeps using the old cached jnlp file no matter what I do. The only way to resolve the problem is to uninstall the webstart application from using the java control panel. I understand how this can happen when launching the app from the desktop icon. Basically, the app can't get the updated jnlp file without using the href in the old jnlp file (check and egg problem). However, this should not happen when I launch the application from the browser, but it does.

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Jnlp

I turned off all browser caching and even set the applciation/jnlp to not allow offline or desktop/shortcut support and it still happens. When launched from the browser, the browser is passing to webstart a new and proper jnlp file, but webstart still trys to use its old jnlp file and ingnores the one passed in by the browser. This is busted and needs fixing. If the site administrator make a mistake one time, every user will need to delete their jnlp cache before they could get the app to work again. This is not good when you have hundred or thousands of desktop users. STEPS TO FOLLOW TO REPRODUCE THE PROBLEM: Create a webstart application and put its jnlp file on a webserver.

Request the jnlp file from the desktop and run the webstart application. Now go to the webserver and modify the 'href' attribute in the jnlp file to be something that is 'wrong'. Of course now when you run the webstart app from the desktop it will tell you that there is a problem with the jnlp file and it will not start. Now fix the 'href' in the jnlp file on the webserver and try to start the application again. The application will give the same error and will reference the old bad jnlp file whether you launch it from the desktop webstart icon or from an IE browser.

Procedures advice manual 3 australian immigration. The only way to fix the problem is for the desktop user to uninstall the webstart application. REPRODUCIBILITY: This bug can be reproduced always. ###@###.### 11/1/04 23:23 GMT. EVALUATION we incorrectly assume a cached jnlp file is 'beter' than one passed in. This would be the case if A - B - B would be in cache when A is passed in. But this is not the case if A - B (and B dosn't exist), and new A' is passed in. In this case A'-A', and gets hung on old B.

###@###.### 2004-11-05 19:52:31 GMT This is bad in the case given, where the JNLP file has an href, but for jnlp files w/o an href, the problem is worse. When clicking on an updated jnlp file from web browser, the new jnlp file is downloaded, the corrisponding (un-updated) one in the cache is used, since there is no href, java web start cannot try to download it again, so the application will be run with the old, unupdated one from the cache. Any changes to the jnlp file on the web are never cached or used.

###@###.### 2004-11-10 14:26:26 GMT Sorry - re-test shows this is not true. When a jnlp file w/o an href is run from the web, the downloaded jnlp file replaces the jnlp file in the cache every time. ###@###.### 2004-11-10 14:59:35 GMT Problem is we were always taking the jnlp file from the cache, when a different one was passed in. This only matters if the href is different, which it can be if the app uses a query string, or if the href was originally bad and later fixed. We will now put the new jnlp file into the cache if it is different (if it was the same, it may already be in the system cache, so we don't want to add another copy in the user cache) ###@###.### 2005-1-04 20:53:50 GMT.

Offline-allowed element: The optional offline-allowed element indicates if the application can be launched offline. If offline-allowed is specified, then the application can be launched offline by the Java Application Cache Viewer, and shortcuts can be created which launch the application offline. If an application is launched offline, it will not check for updates and the API call BasicService.isOffline will return true. The offline-allowed element also controls how Java Web Start checks for an update to an application. If the element is not specified—i.e., the application is required to be online to run—Java Web Start will always check for an updated version before launching the application. And if an update is found, the new application will be downloaded and launched. Thus, it is guaranteed that the user always runs the latest version of the application.

The application, however, must be run online. If offline-allowed is specified, Java Web Start will also check to see if an update is available. However, if the application is already downloaded the check will timeout after a few seconds, in which case the cached application will be launched instead. Given a reasonably fast server connection, the latest version of the application will usually be run, but it is not guaranteed. The application, however, can be run offline.

From text above, it seems that the jar-files will be put in cache regardless of the offline-element is specified.