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Hello dear community &/ mendix developers, I am trying to connect to an OPC UA server with the OPC UA client in my Mendix application. In my Mendix application I am using the OPC UA Client Connector of Mendix. With another tool i can access or connect to the server. But in Mendix i get the following error:  Testing server connection, Unable to connect to opc.tcp:…     com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.core.CoreException: java.util.concurrent.ExecutionException: java.nio.channels.ClosedChannelException     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:108) Caused by: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.core.CoreException: java.util.concurrent.ExecutionException: java.nio.channels.ClosedChannelException     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:23) Caused by: com.mendix.core.CoreException: java.util.concurrent.ExecutionException: java.nio.channels.ClosedChannelException     at opcuaclientmx.impl.OpcUaClientManager.buildNewClient(OpcUaClientManager.java:105) Caused by: java.util.concurrent.ExecutionException: java.nio.channels.ClosedChannelException     at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395)     at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1999)     at opcuaclientmx.impl.OpcUaClientManager.buildNewClient(OpcUaClientManager.java:98)     at opcuaclientmx.impl.OpcUaClientManager.retrieve(OpcUaClientManager.java:51)     at opcuaclientmx.actions.OpcUaConnectionTest.executeAction(OpcUaConnectionTest.java:36)     at opcuaclientmx.actions.OpcUaConnectionTest.executeAction(OpcUaConnectionTest.java:18)     at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48)     at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:56)     at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:104)     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:103)     at com.mendix.basis.actionmanagement.UserActionCallBuilderImpl.execute(UserActionCallBuilderImpl.scala:57)     at com.mendix.modules.microflowengine.actions.actioncall.ForegroundJavaAction.doExecute(ForegroundJavaAction.scala:35)     at com.mendix.modules.microflowengine.actions.actioncall.ForegroundJavaAction.doExecute(ForegroundJavaAction.scala:11)     at com.mendix.modules.microflowengine.actions.actioncall.JavaAction.execute(JavaAction.scala:38)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.$anonfun$execute$1(MicroflowObject.scala:32)     at scala.Option.flatMap(Option.scala:283)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.scala:29)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.$anonfun$executeAfterBreakingIfNecessary$2(MicroflowImpl.scala:167)     at scala.Option.flatMap(Option.scala:283)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.scala:167)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.scala:114)     at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48)     at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:56)     at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:104)     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:103)     at com.mendix.basis.actionmanagement.MicroflowCallBuilderImpl.execute(MicroflowCallBuilderImpl.scala:62)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:76)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.$anonfun$apply$3(ExecuteMicroflowAction.scala:42)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:30)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.$anonfun$apply$4(RegularClientAction.scala:56)     at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:42)     at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:39)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.withState(RegularClientAction.scala:46)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:54)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:46)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:43)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:22)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:113)     at scala.util.Try$.apply(Try.scala:210)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:113)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:111)     at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$5(ContextHandling.scala:55)     at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)     at com.mendix.basis.actionmanagement.ActionMonitoring$.$anonfun$monitor$1(ActionMonitoring.scala:49)     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)     at com.mendix.basis.actionmanagement.ActionMonitoring$.monitor(ActionMonitoring.scala:49)     at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:55)     at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:29)     at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:87)     at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:26)     at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:18)     at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:87)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:111)     at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)     at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14)     at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10)     at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:87)     at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:108)     at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:106)     at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:79)     at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:37)     at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1(MxRuntimeConnector.scala:50)     at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1$adapted(MxRuntimeConnector.scala:50)     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)     at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.scala:50)     at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.scala:213)     at com.mendix.m2ee.appcontainer.server.handler.RuntimeServlet.service(RuntimeServlet.scala:25)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)     at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)     at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1631)     at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:228)     at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)     at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)     at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)     at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)     at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)     at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)     at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)     at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)     at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)     at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)     at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)     at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)     at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)     at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)     at org.eclipse.jetty.server.Server.handle(Server.java:516)     at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)     at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)     at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)     at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)     at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)     at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)     at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)     at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)     at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)     at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)     at java.base/java.lang.Thread.run(Thread.java:834) Caused by: java.nio.channels.ClosedChannelException: null     at io.netty.channel.AbstractChannel$AbstractUnsafe.newClosedChannelException(AbstractChannel.java:957)     at io.netty.channel.AbstractChannel$AbstractUnsafe.ensureOpen(AbstractChannel.java:976)     at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.connect(AbstractNioChannel.java:237)     at io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1342)     at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:546)     at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:531)     at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:515)     at io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:978)     at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:253)     at io.netty.bootstrap.Bootstrap$3.run(Bootstrap.java:244)     at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)     at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)     at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)     at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)     at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)     at java.base/java.lang.Thread.run(Thread.java:834)       Unfortunately, the various solutions in “Ask the Community”  did not work. I would appreciate your support! Unfortunately, the various solutions in the Community Portal did not work. I would appreciate your support! 

asked 2022-04-05

1 answers