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Re: [milo-dev] eclipse milo client 3.0.5 gets stuck when disconnecting
Actually, I can reproduce it if I attempt a blocking disconnect while blocking on the callback from a connect:

client.connect().thenRun(() -> {
    try {
        client.disconnect().get();
    } catch (InterruptedException | ExecutionException e) {
        e.printStackTrace();
    }
}).get();

For now I would suggest you modify your code so this is not happening.

On Tue, Oct 1, 2019 at 5:40 AM Kevin Herron <kevinherron@xxxxxxxxx> wrote:
I'm not sure how to reproduce this. Can you include a full thread dump or some additional logging?

On Tue, Oct 1, 2019 at 3:27 AM Lenovo K3 Owner <lenovo.k3.1.owner@xxxxxxxxx> wrote:
Hello Milo-dev,


I am observing rather strange problems after upgrading from milo 0.2.5
to 0.3.3

suddenly client freezes when i disconnect from server (i use as server zenon)
OpcUaClient client = ...
client.disconnect().get();


"milo-shared-thread-pool-0@21292" daemon prio=5 tid=0x72 nid=NA waiting
  java.lang.Thread.State: WAITING
          at sun.misc.Unsafe.park(Unsafe.java:-1)
          at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
          at java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1693)
          at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323)
          at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1729)
          at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
          at com.myproject.opcua.connection.OpcUaServerCommandExecutorTemplateServiceImpl.lambda$runInternal$2(OpcUaServerCommandExecutorTemplateServiceImpl.java:73)
          at com.myproject.opcua.connection.OpcUaServerCommandExecutorTemplateServiceImpl$$Lambda$1641.1531540324.apply(Unknown Source:-1)
          at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
          at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
          at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
          at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
          at org.eclipse.milo.opcua.stack.core.util.FutureUtils$CompletionBuilder.lambda$with$0(FutureUtils.java:163)
          at org.eclipse.milo.opcua.stack.core.util.FutureUtils$CompletionBuilder$$Lambda$1642.372612879.accept(Unknown Source:-1)
          at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
          at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
          at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
          at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
          at org.eclipse.milo.opcua.sdk.client.session.SessionFsmFactory.lambda$configureActiveState$24(SessionFsmFactory.java:512)
          at org.eclipse.milo.opcua.sdk.client.session.SessionFsmFactory$$Lambda$1457.797901058.execute(Unknown Source:-1)
          at com.digitalpetri.strictmachine.dsl.ActionBuilder$$Lambda$1315.1332887918.accept(Unknown Source:-1)
          at com.digitalpetri.strictmachine.dsl.ActionBuilder$PredicatedTransitionAction.execute(ActionBuilder.java:76)
          at com.digitalpetri.strictmachine.StrictMachine$PollAndEvaluate.lambda$run$0(StrictMachine.java:207)
          at com.digitalpetri.strictmachine.StrictMachine$PollAndEvaluate$$Lambda$1366.1743722390.accept(Unknown Source:-1)
          at java.util.ArrayList.forEach(ArrayList.java:1257)
          at com.digitalpetri.strictmachine.StrictMachine$PollAndEvaluate.run(StrictMachine.java:198)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
          at java.lang.Thread.run(Thread.java:748)



or when I try to read server node (at lest some nodes are working).

ServerNode serverNode = client.getAddressSpace().getObjectNode(Identifiers.Server, ServerNode.class).get();


--
Best regards,
 Mikalai                      
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