Java Web Start & proxyPort/proxyHost

my jws app is ignoring the proxy settings using the code like System.setProperty("proxyPort", value) etcp.

开发者_运维问答

Starting the application just by using the jar except the jnlp, the proxy will be setted.

Whats the reason behind?

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It might be that the property being set is classed as a 'trusted property'. If that is the case then the JNLP will need to declare all-permissions in the security element.

It might also mean even that the JNLP file itself has to be included in the Jar & digitally signed along with the code. I am a little fuzzy on when that applies.