2009/6/24 Christopher Piggott <cpigg...@gmail.com>:
> I have a servlet that sends and listens to a local UDP service. To
> allow this, I established the following policy:
>
> grant codebase "file:${catalina.base}/webapps/modbus/-" {
> permission java.net.SocketPermission "localhost:502", "connect";
>
> };
>
>
> This allowed packets out to the external service, but not responses.
> I changed it as follows:
>
> grant codebase "file:${catalina.base}/webapps/modbus/-" {
> permission java.net.SocketPermission "localhost:502",
> "connect,accept,listen";
>
> };
>
> and it started working.
>
> The client library in question creates a DatagramSocket(), then calls
> receive() on it with a timeout. Before adding "accept,listen" t
> always timed out.
>
> Version information:
> Tomcat/6.0.18
> JVM 1.6.0_13-b03 Sun Microsystems Inc
> O/S Linux 2.6.28-13-server i386
>
>
> Here's my question: if this was failing, why didn't it throw a
> SecurityException? It would have been less challenging to figure out
> what was going on had there been one.
>
Ask your Java vendor. :)
There is no Tomcat code there.
Best regards,
Konstantin Kolinko
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