[DIRMINA-659] AccessControlException when running MINA in a Applet: RuntimePermission "modifyThread"

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-M4
• Fix Version/s: 2.0.0-RC1
• Component/s: Web Site / Documentation
• Environment: Java 5 Applet (using appletviewer)
• Assignee: Edouard De Oliveira
• Reporter: Jeff Mesnil
• Created: 03/Feb/09 10:17
• Updated: 19/Oct/09 20:15
• Resolved: 30/Jun/09 21:26

Description

I'm using MINA 2.0.0-M4 within a restricted environment (an Applet in my case, could also be JNLP).

When running the code in appletviewer, I need to add a permission for the code to be executed successfully:
permission java.lang.RuntimePermission "modifyThread";

If I don't add this permission, the code fails with the following stack trace:

Exception in thread "pool-2-thread-1" java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThread)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:264)
at java.security.AccessController.checkPermission(AccessController.java:427)
at java.util.concurrent.ThreadPoolExecutor.shutdown(ThreadPoolExecutor.java:893)
at org.apache.mina.core.service.SimpleIoProcessorPool.dispose(SimpleIoProcessorPool.java:230)
at org.apache.mina.core.polling.AbstractPollingIoConnector$Connector.run(AbstractPollingIoConnector.java:512)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:65)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:613)

The exception occurs when I close the SocketConnector:

public synchronized void close()
{
if (connector != null)

{ connector.dispose(); connector = null; }

}