Karakun Support Forums

Which version of OWS are you using? Can you send the OWS log files (openwebstart@karakun.com) from a date when you experienced the problem?
https://openwebstart.com/docs/FAQ.html# ... _reporting

you need to distinguish between the JVM that OWS needs to run and the JDK your jnlp application needs to run. The JVM bundled with OWS is not the one used to launch your application (https://openwebstart.com/docs/FAQ.html#_i_saw_there_is_a_bundled_jre_installed_together_with_ows_can_i_use_it). When ...

could you give more details on your problem? Do you talk about Java Webstart or OWS? It looks like you run Java Webstart and need to install a suitable JVM to run your script

Looks like it does not find the file and the file suffix (.jnlp64) looks also strange.

More details on the JNLP file and the logs are required to help you there:
https://openwebstart.com/docs/FAQ.html# ... _find_them

When I look into the code of OpenWebStart, I can see an implementation of BasicService.getCodeBase() (net.sourceforge.jnlp.services.XBasicService#getCodeBase, in the IcedTea-Web Part), so it looks to me that your required functionality is around. Did you gave it a try?

I'm not aware of a possibility to launch .exe using OWS/JNLP. Maybe you can wrap the .dll/.exe in a .jar file, and reference it in your .jnlp file using <nativelib>. Anybody in the forum here have some experience with that?! Just out of curiosity, did you manage to run your exe application with Orac...

You need to give more details on the settings of this particular machine as JVM downloading behavior in OWS depends on various other aspects, such as your other JVM Manager settings (jnlp precedence settings, vendor restrictions, etc.) and if you have activated/deactivated some JVMs in your JVM Mana...

There are no plans for an implementation right now, we need a sponsor for implementing this feature.

I'm afraid custom extensions described by association tag is not implemented yet in OWS. OWS is parsing the tags in jnlp but does not registering these information with the operating system as the primary handler of these extensions / mime-type.

guess the problem is what the exception says: you have to sign your jars to run your application.

Really looks like your javax class is not longer included in the JVM you are using. In this case you have to add the javax activation jar to your jnlp.

I guess you mean 31th of March. Sounds like a similar message as reported in https://github.com/karakun/OpenWebStart/issues/389 and https://github.com/karakun/OpenWebStart/issues/428 Is it possible that a default password changed with the end of month for the keystore and you need to enter the corre...

I can confirm this and filed a bug for the OWS support team. Thank you for reporting.

there is a pretty good documentation how to setup your own download server:
https://openwebstart.com/docs/OWSGuide. ... oad_server

for an example json file, have a look at:
http://download-openwebstart.com/jvms.json

tar.gz and zip is both fine

Could you please also add the logs of your OpenWebStart installation?
https://openwebstart.com/docs/FAQ.html# ... _find_them

can you add the following lines deployment.log.file=true deployment.log=true deployment.console.startup.mode=SHOW to your "/home/<your user>/.config/icedtea-web/deployment.properties" file to enable logging manually without using the UI. If you do this, OWS should log to file (/home/<your ...

Was this your first try with OWS 1.4.0 on RHEL8.4 or did it work before (older version of OWS resp. RHEL)?

Solved in 1.4.0

We also completed documentation on how to make use of the vendor atribute, see

https://openwebstart.com/docs/OWSGuide. ... _jnlp_file

When you previously installed Oracle Java Web Start (or have it installed in parallel with OpenWebStart) then .jnlp is most likley associated with "Java Web Start Launcher" program. You have to change file association on your OS to point to OpenWebStart. When click on a .jnlp Link in the b...