It happens very often to me .
We found it in development environment , most time we close the client process without close the client connection.
A simple way to replicate it , it just open 30+ client connections from remote host in seconds ,and kill the client Process.
so I think if I have 100 client connections from every application server to the HornetQ server , and one of the appserver crash , then no new client connections could be open any more.
after I started and stoped many client coonections , new Clients can't connect to Server .
I must restart the server .... thank you for help ..
on the Server side , the logs :
2013-07-06 15:31:01 [WARN ] org.hornetq.core.server
(ManagementServiceImpl.java:426) - HQ222111: exception while invoking
createTopic on jms.server java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor298.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.hornetq.core.server.management.impl.ManagementServiceImpl.invokeOperation(ManagementServiceImpl.java:843)
at org.hornetq.core.server.management.impl.ManagementServiceImpl.handleMessage(ManagementServiceImpl.java:418)
at org.hornetq.core.server.impl.ServerSessionImpl.handleManagementMessage(ServerSessionImpl.java:1513)
at org.hornetq.core.server.impl.ServerSessionImpl.send(ServerSessionImpl.java:1274)
at org.hornetq.core.protocol.core.ServerSessionPacketHandler.handlePacket(ServerSessionPacketHandler.java:445)
at org.hornetq.core.protocol.core.impl.ChannelImpl.handlePacket(ChannelImpl.java:631)
at org.hornetq.core.protocol.core.impl.RemotingConnectionImpl.doBufferReceived(RemotingConnectionImpl.java:547)
at org.hornetq.core.protocol.core.impl.RemotingConnectionImpl.bufferReceived(RemotingConnectionImpl.java:523)
at org.hornetq.core.remoting.server.impl.RemotingServiceImpl$DelegatingBufferHandler.bufferReceived(RemotingServiceImpl.java:564)
at org.hornetq.core.remoting.impl.netty.HornetQChannelHandler.messageReceived(HornetQChannelHandler.java:72)
at org.jboss.netty.channel.SimpleChannelHandler.handleUpstream(SimpleChannelHandler.java:88)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560)
at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:787)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:281)
at org.hornetq.core.remoting.impl.netty.HornetQFrameDecoder2.decode(HornetQFrameDecoder2.java:169)
at org.hornetq.core.remoting.impl.netty.HornetQFrameDecoder2.messageReceived(HornetQFrameDecoder2.java:134)
at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:555)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
at org.jboss.netty.channel.socket.oio.OioWorker.process(OioWorker.java:71)
at org.jboss.netty.channel.socket.oio.AbstractOioWorker.run(AbstractOioWorker.java:73)
at org.jboss.netty.channel.socket.oio.OioWorker.run(OioWorker.java:51)
at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
at org.jboss.netty.util.VirtualExecutorService$ChildExecutorRunnable.run(VirtualExecutorService.java:175)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.NullPointerException
at org.hornetq.core.postoffice.impl.WildcardAddressManager.addBinding(WildcardAddressManager.java:112)
at org.hornetq.core.postoffice.impl.PostOfficeImpl.addBinding(PostOfficeImpl.java:453)
at org.hornetq.core.server.impl.HornetQServerImpl.createQueue(HornetQServerImpl.java:1850)
at org.hornetq.core.server.impl.HornetQServerImpl.deployQueue(HornetQServerImpl.java:1137)
at org.hornetq.jms.server.impl.JMSServerManagerImpl.internalCreateTopic(JMSServerManagerImpl.java:1280)
at org.hornetq.jms.server.impl.JMSServerManagerImpl.access$800(JMSServerManagerImpl.java:105)
at org.hornetq.jms.server.impl.JMSServerManagerImpl$2.runException(JMSServerManagerImpl.java:650)
at org.hornetq.jms.server.impl.JMSServerManagerImpl.runAfterActive(JMSServerManagerImpl.java:1832)
at org.hornetq.jms.server.impl.JMSServerManagerImpl.createTopic(JMSServerManagerImpl.java:637)
at org.hornetq.jms.management.impl.JMSServerControlImpl.createTopic(JMSServerControlImpl.java:481)
at org.hornetq.jms.management.impl.JMSServerControlImpl.createTopic(JMSServerControlImpl.java:470)
... 33 more 2013-07-06 15:31:01 [WARN ] org.hornetq.core.server (ServerSessionPacketHandler.java:541) -
Sending unexpected exception to the client
java.lang.NullPointerException
at org.hornetq.core.postoffice.impl.WildcardAddressManager.addBinding(WildcardAddressManager.java:112)
Client:
Caused by: javax.jms.JMSException
at org.hornetq.core.protocol.core.impl.ChannelImpl.sendBlocking(ChannelImpl.java:378)
at org.hornetq.core.client.impl.ClientSessionImpl.internalCreateQueue(ClientSessionImpl.java:1987)
at org.hornetq.core.client.impl.ClientSessionImpl.createTemporaryQueue(ClientSessionImpl.java:356)
at org.hornetq.core.client.impl.DelegatingSession.createTemporaryQueue(DelegatingSession.java:304)
at org.hornetq.jms.client.HornetQSession.createConsumer(HornetQSession.java:559)
at org.hornetq.jms.client.HornetQSession.createConsumer(HornetQSession.java:378)
at org.hornetq.jms.client.HornetQSession.createConsumer(HornetQSession.java:353)
at com.gamebean.toolkit.jms.hornetq.impl.MessageBridgeImpl.init(MessageBridgeImpl.java:89)
... 131 more Caused by: HornetQException[errorType=INTERNAL_ERROR message=null]
... 139 more
Related
I am new to OPC-UA and Eclipse Milo and I am trying to construct a client that can connect to the OPC-UA server of a machine we have just acquired.
I have been able to set up a simple OPC-UA server on my laptop by using this python tutorial series: https://www.youtube.com/watch?v=NbKeBfK3pfk. Additionally, I have been able to use the Eclipse Milo examples to run the subscription example successfully to read some values from this server.
However, I have been having difficulty connecting to the OPC-UA server of the machine we have just received. I have successfully connected to this server using the UaExpert client, but we want to build our own client using Eclipse Milo. I can see that some warnings come up when using UaExpert to connect to the server which appear to give clues about the issue but I have too little experience in server-client communications/OPC-UA and would appreciate some help. I will explain what happens when I use the UaExpert client as I have been using this to try and diagnose what is going on.
I notice that when I first launch UaExpert I get the following errors which could be relevant:
Discovery FindServersOnNetwork on opc.tcp://localhost:4840 failed (BadTimeout), falling back to FindServers
Discovery FindServers on opc.tpc://localhost:4840 failed (BadTimeout)
Discovery GetEndpoints on opc.tcp://localhost:4840 failed
I am really new to networking so not sure exactly what this means.
I will outline the process I have followed when trying to get the SubscriptionExample of Eclipse Milo working with this machine's server. Firstly, I change the getEndpointUrl() method to the ip address of the device we are using: return "opc.tcp://11.23.1.1:4840". I can successfully ping the device using ping 11.23.1.1 from my laptop. When I try to run the SubscriptionExample with this address I get the following error:
[NonceUtilSecureRandom] INFO o.e.m.o.stack.core.util.NonceUtil - SecureRandom seeded in 0ms.
18:36:23.879 [main] ERROR o.e.m.e.client.ClientExampleRunner - Error running client example: java.net.UnknownHostException: br-automation
java.util.concurrent.ExecutionException: java.net.UnknownHostException: br-automation
at java.util.concurrent.CompletableFuture.reportGet(Unknown Source)
at java.util.concurrent.CompletableFuture.get(Unknown Source)
at org.eclipse.milo.examples.client.SubscriptionExample.run(SubscriptionExample.java:50)
at org.eclipse.milo.examples.client.ClientExampleRunner.run(ClientExampleRunner.java:120)
at org.eclipse.milo.examples.client.SubscriptionExample.main(SubscriptionExample.java:42)
Caused by: java.net.UnknownHostException: br-automation
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(Unknown Source)
at java.net.InetAddress.getAddressesFromNameService(Unknown Source)
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getByName(Unknown Source)
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:148)
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:145)
at java.security.AccessController.doPrivileged(Native Method)
at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:145)
at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:200)
at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:46)
at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:180)
at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:166)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:577)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:551)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:490)
at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:615)
at io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:604)
at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)
at io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetSuccess(AbstractChannel.java:984)
at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:504)
at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:417)
at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:474)
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.lang.Thread.run(Unknown Source)
18:36:23.881 [ForkJoinPool.commonPool-worker-1] ERROR o.e.m.e.client.ClientExampleRunner - Error running example: java.net.UnknownHostException: br-automation
java.util.concurrent.ExecutionException: java.net.UnknownHostException: br-automation
at java.util.concurrent.CompletableFuture.reportGet(Unknown Source)
at java.util.concurrent.CompletableFuture.get(Unknown Source)
at org.eclipse.milo.examples.client.SubscriptionExample.run(SubscriptionExample.java:50)
at org.eclipse.milo.examples.client.ClientExampleRunner.run(ClientExampleRunner.java:120)
at org.eclipse.milo.examples.client.SubscriptionExample.main(SubscriptionExample.java:42)
Caused by: java.net.UnknownHostException: br-automation
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(Unknown Source)
at java.net.InetAddress.getAddressesFromNameService(Unknown Source)
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getByName(Unknown Source)
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:148)
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:145)
at java.security.AccessController.doPrivileged(Native Method)
at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:145)
at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:200)
at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:46)
at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:180)
at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:166)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:577)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:551)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:490)
at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:615)
at io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:604)
at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)
at io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetSuccess(AbstractChannel.java:984)
at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:504)
at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:417)
at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:474)
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$2.run(ThreadExecutorMap.java:74)
at java.lang.Thread.run(Unknown Source)
When using UaExpert, "opc.tcp://11.23.1.1:4840" is the address of the server that I input when adding a new server when using Custom Discovery. When I enter this, a device appears as a dropdown of this server called B&R Embedded OPC-UA Server as the OPC-UA server is hosted on a B&R device in the machine. When I select this device to connect to, I get the following message:
The hostname of the discovery URL used to call GetEndpoints (br-automation) was replaced by the hostname used to call FindServers (11.23.1.1). Do you also want to replace the hostnames of the EndpointURLs with this hostname?
I have to accept this message for the server to be found, but I am confused exactly what is going on. I assume there is a difference in the endpoint used to find the server and the endpoint used for something else? I have found the resources online very difficult to understand. In the UaExpert logs there are three lines of logs in a row which report "Adding Url: ocp.tcp://br-automation:4840". It also then reports the endpoint: "ocp.tcp://br-automation:4840", the application Uri and the security policy (none). If I try change the address in the client's getEndpointUrl method to ocp.tcp://br-automation:4840 then I get the following error:
[main] INFO o.e.m.opcua.sdk.client.OpcUaClient - Eclipse Milo OPC UA Client SDK version: 0.4.3-SNAPSHOT
18:37:46.035 [main] ERROR o.e.m.e.client.ClientExampleRunner - Error getting client: java.util.concurrent.ExecutionException: java.net.UnknownHostException: br-automation
org.eclipse.milo.opcua.stack.core.UaException: java.util.concurrent.ExecutionException: java.net.UnknownHostException: br-automation
at org.eclipse.milo.opcua.sdk.client.OpcUaClient.lambda$create$1(OpcUaClient.java:204)
at java.util.Optional.orElseGet(Unknown Source)
at org.eclipse.milo.opcua.sdk.client.OpcUaClient.create(OpcUaClient.java:204)
at org.eclipse.milo.opcua.sdk.client.OpcUaClient.create(OpcUaClient.java:201)
at org.eclipse.milo.examples.client.ClientExampleRunner.createClient(ClientExampleRunner.java:73)
at org.eclipse.milo.examples.client.ClientExampleRunner.run(ClientExampleRunner.java:94)
at org.eclipse.milo.examples.client.SubscriptionExample.main(SubscriptionExample.java:42)
Caused by: java.util.concurrent.ExecutionException: java.net.UnknownHostException: br-automation
at java.util.concurrent.CompletableFuture.reportGet(Unknown Source)
at java.util.concurrent.CompletableFuture.get(Unknown Source)
at org.eclipse.milo.opcua.sdk.client.OpcUaClient.create(OpcUaClient.java:180)
... 4 common frames omitted
Caused by: java.net.UnknownHostException: br-automation
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getByName(Unknown Source)
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:148)
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:145)
at java.security.AccessController.doPrivileged(Native Method)
at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:145)
at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:200)
at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:46)
at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:180)
at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:166)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:577)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:551)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:490)
at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:615)
at io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:604)
at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)
at io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetSuccess(AbstractChannel.java:984)
at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:504)
at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:417)
at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:474)
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.lang.Thread.run(Unknown Source)
I don't know if this is enough information to diagnose the problem, but I would appreciate any help on how I can get the Eclipse Milo server to perform the same process and connect to the machine's server.
The issue is that the computer you're running the client on can't resolve the hostname "br-automation" into an IP address.
The solution if you can't configure your server to return an IP address instead is to manually rebuild the EndpointDescriptions you get from the GetEndpoints service call so they have an endpoint URL that contains the IP address instead of the hostname. This is what UaExpert is doing behind the scenes when it warns you about replacing the hostname.
You can use EndpointUtil#updateUrl to build a new EndpointDescription before it gets passed to the OpcUaClientConfig.
You can find correct Hostname/URL to connect server by using server log.
Once server logs starts it print all valid UR
We were able to solve our problem, by manually overwriting the hostname returned from the OPC UA Server with the hosts IP and port. (see second line of the try statement)
public class OpcUaConnection {
OpcUaClient client;
final int NAMESPACEINDEX = 6;
private static final AtomicLong clientHandles = new AtomicLong(1L);
public OpcUaConnection() {
try {
List<EndpointDescription> endpoints = DiscoveryClient.getEndpoints("opc.tcp://192.168.0.122:4840").get();
EndpointDescription configPoint = EndpointUtil.updateUrl(endpoints.get(0), "192.168.0.122", 4840);
OpcUaClientConfigBuilder cfg = new OpcUaClientConfigBuilder();
cfg.setEndpoint(configPoint);
this.client = OpcUaClient.create(cfg.build());
client.connect().get();
} catch (Throwable ex) {
ex.printStackTrace();
}
}
Hope this can help out others!
Spring application is logging broken pipe occasionally. To deal with stale connections issue, application is already using -
testWhileIdle=true and validationQuery=SELECT 1
Stack trace -
Caused by: org.postgresql.util.PSQLException: An I/O error occurred while sending to the backend.
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:333)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:441)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:365)
at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:155)
at org.postgresql.jdbc.PgPreparedStatement.executeQuery(PgPreparedStatement.java:118)
at sun.reflect.GeneratedMethodAccessor89.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tomcat.jdbc.pool.StatementFacade$StatementProxy.invoke(StatementFacade.java:114)
at com.sun.proxy.$Proxy137.executeQuery(Unknown Source)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:70)
... 133 more
Caused by: java.net.SocketException: Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:115)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at org.postgresql.core.PGStream.flush(PGStream.java:514)
at org.postgresql.core.v3.QueryExecutorImpl.sendSync(QueryExecutorImpl.java:1363)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:304)
... 143 more
Caused by java.net.SocketException: Broken pipe (Write failed)
A vague feeling, if application stays inactive for while, then it might be giving problem connecting to backend or vice-versa. But since can not reproduce this issue locally, it is hard to point.
You can try setting the timeout of idle connection higher.
idle_in_transaction_session_timeout = 30000
in postgresql.conf
But your error seems strange to me. I would probably check if you dont have way to many connection as well.
On the spring-boot side you could try adding the following properties:
spring.datasource.test-on-borrow=true
spring.datasource.validation-query=SELECT 1
spring.datasource.validation-interval=30000
you could try reducing the validation interval. I set it to the default one there
Hope it helps
First of all: I'm a newbie to OPCUA. :)
I'm trying to connect an Milo Client to our Server but don't really understand whats going wrong. The sample Client and Server work fine together, but when I try to connect the client sample with one of the public OPC-UA-Test-Servers I get those exceptions:
15:48:34.729 [ua-netty-event-loop-0] DEBUG
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler
- Sent Hello message on channel=[id: 0xc22800c2, L:/10.22.19.217:58947 - R:opcua.demo-this.com/52.233.134.134:51210]. 15:48:34.729 [ua-netty-event-loop-0] WARN io.netty.channel.DefaultChannelPipeline -
An exceptionCaught() event was fired, and it reached at the tail of
the pipeline. It usually means the last handler in the pipeline did
not handle the exception. java.io.IOException: An existing connection
was forcibly closed by the remote host at
sun.nio.ch.SocketDispatcher.read0(Native Method) at
sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43) at
sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) at
sun.nio.ch.IOUtil.read(IOUtil.java:192) at
sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) at
io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:221)
at
io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:898)
at
io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:242)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:119)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:485)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:399)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:371) at
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)
at java.lang.Thread.run(Thread.java:745) 15:48:39.612
[ForkJoinPool.commonPool-worker-1] DEBUG
org.eclipse.milo.opcua.stack.client.ClientChannelManager - Channel
bootstrap failed: timed out waiting for acknowledge
org.eclipse.milo.opcua.stack.core.UaException: timed out waiting for
acknowledge at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler.lambda$startHelloTimeout$4(UaTcpClientAcknowledgeHandler.java:156)
at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler$$Lambda$27/469017260.run(Unknown
Source) at
io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:581)
at
io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:655)
at
io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:367)
at java.lang.Thread.run(Thread.java:745) 15:48:39.613 [main] ERROR
org.eclipse.milo.examples.client.ClientExampleRunner - Error running
example: UaException: status=Bad_Timeout, message=timed out waiting
for acknowledge java.util.concurrent.ExecutionException: UaException:
status=Bad_Timeout, message=timed out waiting for acknowledge at
java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
at
java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1887)
at
org.eclipse.milo.examples.client.ClientExampleRunner.createClient(ClientExampleRunner.java:56)
at
org.eclipse.milo.examples.client.ClientExampleRunner.run(ClientExampleRunner.java:103)
at
org.eclipse.milo.examples.client.BrowseExample.main(BrowseExample.java:40)
Caused by: org.eclipse.milo.opcua.stack.core.UaException: timed out
waiting for acknowledge at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler.lambda$startHelloTimeout$4(UaTcpClientAcknowledgeHandler.java:156)
at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler$$Lambda$27/469017260.run(Unknown
Source) at
io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:581)
at
io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:655)
at
io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:367)
at java.lang.Thread.run(Thread.java:745) 15:48:42.842
[threadDeathWatcher-2-1] DEBUG io.netty.buffer.PoolThreadCache - Freed
2 thread-local buffer(s) from thread: ua-netty-event-loop-0
I took the sample-Code and removed the Certificate/Keypair and changed the URL to opc.tcp://opcua.demo-this.com:51210/UA/SampleServer since the public server doesn't need authorization:
SecurityPolicy securityPolicy = clientExample.getSecurityPolicy();
EndpointDescription[] endpoints = UaTcpStackClient.getEndpoints("opc.tcp://opcua.demo-this.com:51210/UA/SampleServer").get();
EndpointDescription endpoint = Arrays.stream(endpoints)
.filter(e -> e.getSecurityPolicyUri().equals(securityPolicy.getSecurityPolicyUri()))
.findFirst().orElseThrow(() -> new Exception("no desired endpoints returned"));
logger.info("Using endpoint: {} [{}]", endpoint.getEndpointUrl(), securityPolicy);
loader.load();
OpcUaClientConfig config = OpcUaClientConfig.builder()
.setApplicationName(LocalizedText.english("eclipse milo opc-ua client"))
.setApplicationUri("urn:eclipse:milo:examples:client")
//.setCertificate(loader.getClientCertificate())
//.setKeyPair(loader.getClientKeyPair())
.setEndpoint(endpoint)
.setIdentityProvider(clientExample.getIdentityProvider())
.setRequestTimeout(uint(5000))
.build();
return new OpcUaClient(config);
What am I missing?
Greetings and thanks in advance :)
Buried in that stack trace is the real problem: UaException: timed out waiting for acknowledge.
Maybe your firewall or network setup is blocking it, or maybe the server didn't send it back, but the problem is that the client never received the Acknowledge message in response to its Hello.
FWIW, I can run the ReadExample against that public server with no issue. In ReadExample I overrode getSecurityPolicy() and returned SecurityPolicy.None and in ClientExampleRunner just replaced the endpoint URL.
After using the jhipster generator, I am able to successfully run the app on my local webserver with a local PostgresQL. I managed to deploy it to Heroku as well, but now when I try to run it locally in IntelliJ (as I have before deployment), (selecting 'dev profile', clicking on spring-boot:run) or running the Application main method,
I receive the following error (Heroku Database url is not configured):
... 123 common frames omitted
Caused by: org.springframework.context.ApplicationContextException: Heroku database URL is not configured, you must set --spring.datasource.heroku-url=$DATABASE_URL
at com.mycompany.myapp.config.HerokuDatabaseConfiguration.dataSource(HerokuDatabaseConfiguration.java:62) ~[classes/:na]
at com.mycompany.myapp.config.HerokuDatabaseConfiguration$$EnhancerBySpringCGLIB$$dbf295a9.CGLIB$dataSource$0(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at com.mycompany.myapp.config.HerokuDatabaseConfiguration$$EnhancerBySpringCGLIB$$dbf295a9$$FastClassBySpringCGLIB$$fa41e789.invoke(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at com.mycompany.myapp.config.HerokuDatabaseConfiguration$$EnhancerBySpringCGLIB$$dbf295a9.dataSource(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
... 124 common frames omitted
Exception in thread "main" org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:474)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at com.mycompany.myapp.Application.main(Application.java:72)
Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:98)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.<init>(TomcatEmbeddedServletContainer.java:75)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:378)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:155)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:157)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130)
... 5 more
Plz excuse my n00bness.. is this by design or am I missing some steps?
It is because of this error and it has been fixed in the latest version.
From the first line in your logs, the Heroku database URL is not configured
Caused by: org.springframework.context.ApplicationContextException: Heroku database URL is not configured, you must set --spring.datasource.heroku-url=$DATABASE_URL
Hopefully the following example will help:
https://github.com/jhipster/generator-jhipster/blob/master/heroku/templates/src/main/java/package/config/_HerokuDatabaseConfiguration.java
I am having a very strange problem with Spring 3.1 and MongoDB. I am using the Spring Mongo libs. This is a pretty simple call just pulls some data and inserts some new data. But as it is in the loop when pulling new data the connection is killed. From a capture I see it pull data insert data, then do another query but after a two second delay it sends a FIN packet to the server. the server then a little bit later tries to send data back to the client, but after that the client sends RSTs as it has already killed the connection.
Please let me know what other information I can provide to help understand this issue. I can provide a download link for the a capture file as well.
Thank you for your help
Trace output
org.springframework.dao.DataAccessResourceFailureException: can't call something : id561la.ytel.com/172.31.214.55:27017/cdrstat; nested exception is com.mongodb.MongoException$Network: can't call something : id561la.ytel.com/172.31.214.55:27017/cdrstat
at org.springframework.data.mongodb.core.MongoExceptionTranslator.translateExceptionIfPossible(MongoExceptionTranslator.java:56)
at org.springframework.data.mongodb.core.MongoTemplate.potentiallyConvertRuntimeException(MongoTemplate.java:1665)
at org.springframework.data.mongodb.core.MongoTemplate.executeFindMultiInternal(MongoTemplate.java:1548)
at org.springframework.data.mongodb.core.MongoTemplate.doFind(MongoTemplate.java:1336)
at org.springframework.data.mongodb.core.MongoTemplate.doFind(MongoTemplate.java:1322)
at org.springframework.data.mongodb.core.MongoTemplate.find(MongoTemplate.java:495)
at org.springframework.data.mongodb.core.MongoTemplate.find(MongoTemplate.java:486)
at dao.BaseMongoSQLDAO.queryForList(BaseMongoSQLDAO.java:35)
at dao.PrefixStatSqlMapDAO.list(PrefixStatSqlMapDAO.java:59)
at services.CDRReaderService.getPrefixStat(CDRReaderService.java:705)
at services.CDRReaderService.processFile(CDRReaderService.java:659)
at services.CDRReaderService.access$100(CDRReaderService.java:42)
at services.CDRReaderService$1.run(CDRReaderService.java:150)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:679)
Caused by: com.mongodb.MongoException$Network: can't call something : id561la.ytel.com/172.31.214.55:27017/cdrstat
at com.mongodb.DBTCPConnector.innerCall(DBTCPConnector.java:295)
at com.mongodb.DBTCPConnector.call(DBTCPConnector.java:257)
at com.mongodb.DBApiLayer$MyCollection.__find(DBApiLayer.java:310)
at com.mongodb.DBApiLayer$MyCollection.__find(DBApiLayer.java:295)
at com.mongodb.DBCursor._check(DBCursor.java:368)
at com.mongodb.DBCursor._hasNext(DBCursor.java:459)
at com.mongodb.DBCursor.hasNext(DBCursor.java:484)
at org.springframework.data.mongodb.core.MongoTemplate.executeFindMultiInternal(MongoTemplate.java:1534)
... 13 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:146)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
at org.bson.io.Bits.readFully(Bits.java:46)
at org.bson.io.Bits.readFully(Bits.java:33)
at org.bson.io.Bits.readFully(Bits.java:28)
at com.mongodb.Response.<init>(Response.java:40)
at com.mongodb.DBPort.go(DBPort.java:124)
at com.mongodb.DBPort.call(DBPort.java:74)
at com.mongodb.DBTCPConnector.innerCall(DBTCPConnector.java:286)
... 20 more