Prevent JNLP from being cached in the Java Web Start cache

Hi,
when i launch a JNLP it's always being cached in the Java Web Start cache. Is there a way to prevent it from being cached? Some attribute/property inside it?
Thanks!

Set the http headers in the response from the server when the client downloads the jnlp file.
eg Cache-control no-cache
Expires (use same date as "date" header)
Note that over SSL on Internet Explorer 8 this will not work. All other configurations should be ok.

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