Client disconnected

[yk1990]

when Client disconnected,"Stack.releaseSharedResources();" Sometimes an error is reported,Other subscriptions will expire:
WARN 6776 --- [d-thread-pool-8] io.netty.channel.AbstractChannel : Force-closing a channel whose registration task was not accepted by an event loop: [id: 0x1bcf1051]

java.util.concurrent.RejectedExecutionException: event executor terminated
at io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:926) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(SingleThreadEventExecutor.java:353) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:346) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:828) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:818) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.channel.AbstractChannel$AbstractUnsafe.register(AbstractChannel.java:471) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:87) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:81) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.channel.MultithreadEventLoopGroup.register(MultithreadEventLoopGroup.java:86) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.bootstrap.AbstractBootstrap.initAndRegister(AbstractBootstrap.java:323) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.bootstrap.Bootstrap.doResolveAndConnect(Bootstrap.java:155) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:139) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:123) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at org.eclipse.milo.opcua.stack.client.transport.uasc.ClientChannelFsm$ClientChannelActions.connect(ClientChannelFsm.java:121) [stack-client-0.5.3.jar!/:0.5.3]
at com.digitalpetri.netty.fsm.ChannelFsmFactory.lambda$connect$53(ChannelFsmFactory.java:514) [netty-channel-fsm-0.3.jar!/:na]
at com.digitalpetri.netty.fsm.ChannelFsmFactory$$Lambda$2023/207215305.run(Unknown Source) [netty-channel-fsm-0.3.jar!/:na]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_40]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_40]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_40]

2023-09-21 14:51:50.844 ERROR 6776 --- [d-thread-pool-8] i.n.u.c.D.rejectedExecution : Failed to submit a listener notification task. Event loop shut down?

java.util.concurrent.RejectedExecutionException: event executor terminated
at io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:926) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(SingleThreadEventExecutor.java:353) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:346) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:828) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:818) ~[netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.DefaultPromise.safeExecute(DefaultPromise.java:842) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:499) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:184) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:95) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:30) [netty-all-4.1.59.Final.jar!/:4.1.59.Final]
at org.eclipse.milo.opcua.stack.client.transport.uasc.ClientChannelFsm$ClientChannelActions.connect(ClientChannelFsm.java:121) [stack-client-0.5.3.jar!/:0.5.3]
at com.digitalpetri.netty.fsm.ChannelFsmFactory.lambda$connect$53(ChannelFsmFactory.java:514) [netty-channel-fsm-0.3.jar!/:na]
at com.digitalpetri.netty.fsm.ChannelFsmFactory$$Lambda$2023/207215305.run(Unknown Source) [netty-channel-fsm-0.3.jar!/:na]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_40]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_40]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_40]

[kevinherron]

Stack.releaseSharedResources() should only be called when your application is shutting down for good. You should make sure all your client instances are disconnected before calling it.