Connection Issues

[giuseppe.corti]

Hi cleggink,

I don't expect the library version to be a problem since 4.3.7 is also compatible with 7.0.x servers anyway.

But you could try to leverage the debug logging of the client library; please make sure that your project has also this dependency:

<dependency>
<groupId>com.lightstreamer</groupId>
<artifactId>java-system-out-log</artifactId>
<version>1.0.2</version>
</dependency>

and add this line of code just before the LightstreamerClient initialization:

LightstreamerClient.setLoggerProvider(new SystemOutLogProvider());

That will produce the log of the client library, maybe will help find some clues about the problem.

Regards,
Giuseppe

[cleggink]

Apologies I thought I listed the project dependencies already.

I am using Eclipse IDE Version: 2021-12 (4.22.0) Build id: 20211202-1639, overtop Java SE 17 on Windows 10. The project Maven dependencies I am using are: jackson-annotations_2.13.1, jackson-core_2.13.1, jackson-databind_2.13.1, lightstreamer_java-system-out.log_1.02, lightstreamer_ls-log-adapter-java_1.02, lightstreamer_ls-javase-client_4.3.0, slf4j-api_1.7.32, and slf4j-log4j12_1.7.32.

And finally some debug information, thank you very much already!

15.Jan.22 12:26:34,148|INFO |lightstreamer.actions|main|New client created
15.Jan.22 12:26:34,170|INFO |lightstreamer.actions|main|Server Address value changed to https://push.cityindex.com/
15.Jan.22 12:26:34,170|INFO |lightstreamer.actions|main|Adapter Set value changed to STREAMINGALL
15.Jan.22 12:26:34,174|INFO |lightstreamer.actions|main|Forced Transport value changed to null
15.Jan.22 12:26:34,174|INFO |lightstreamer.actions|main|User value changed to (removed my email address)
15.Jan.22 12:26:34,175|INFO |lightstreamer.actions|main|Password value changed
15.Jan.22 12:26:34,179|INFO |lightstreamer.actions|main|Connect requested
Status: LIGHTSTREAMER CLIENT LISTENER STARTED
15.Jan.22 12:26:34,187|DEBUG|lightstreamer.session|Session Thread <1>|Opening a new session and starting automatic reconnections
15.Jan.22 12:26:34,191|DEBUG|lightstreamer.session|Session Thread <1>|SessionManager state change: OFF -> STREAMING_WS
15.Jan.22 12:26:34,192|ERROR|lightstreamer.threads|Session Thread <1>|Uncaught exception
15.Jan.22 12:26:34,193|DEBUG|lightstreamer.actions|main|Item list assigned: PRICE.401484300
15.Jan.22 12:26:34,193|DEBUG|lightstreamer.actions|main|Fiel d list assigned: MarketId TickDate Bid Offer Price High Low
15.Jan.22 12:26:34,194|DEBUG|lightstreamer.actions|main|Snap shot Required assigned: yes
15.Jan.22 12:26:34,194|DEBUG|lightstreamer.actions|main|Adap ter Set assigned: PRICES
java.lang.NoClassDefFoundError: io/netty/util/concurrent/GenericFutureListener
Status: LIGHTSTREAMER SUBSCRIPTION LISTENER STARTED
at com.lightstreamer.client.transport.providers.netty .NettyHttpProviderFactory.getInstance(NettyHttpPro viderFactory.java:22)
at com.lightstreamer.client.transport.providers.netty .NettyHttpProviderFactory.getInstance(NettyHttpPro viderFactory.java:18)
at com.lightstreamer.client.session.SessionFactory.cr eateNewSession(SessionFactory.java:38)
at com.lightstreamer.client.session.SessionManager.pr epareNewSessionInstance(SessionManager.java:312)
at com.lightstreamer.client.session.SessionManager.cr eateOrSwitchSession(SessionManager.java:301)
at com.lightstreamer.client.LightstreamerEngine$1.run (LightstreamerEngine.java:119)
at com.lightstreamer.client.session.SessionThread$1.r un(SessionThread.java:155)
at com.lightstreamer.util.threads.LoggingRunnable.run (LoggingRunnable.java:20)
at java.base/java.util.concurrent.Executors$RunnableAdapter.cal l(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.jav a:264)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$S cheduledFutureTask.run(ScheduledThreadPoolExecutor .java:304)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
at com.lightstreamer.util.threads.JoinableSchedulerPo olExecutor$1$1.run(JoinableSchedulerPoolExecutor.j ava:33)
Caused by: java.lang.ClassNotFoundException: io.netty.util.concurrent.GenericFutureListener
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(B uiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.lo adClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:5 20)
... 15 more
15.Jan.22 12:26:34,208|INFO |lightstreamer.subscribe|Session Thread <1>|Adding subscription 1
15.Jan.22 12:26:34,209|DEBUG|lightstreamer.actions|Session Thread <1>|Subscription 1 ready to be sent to server
15.Jan.22 12:26:34,209|DEBUG|lightstreamer.actions|Session Thread <1>|structures reset for subscription 1
15.Jan.22 12:26:34,210|DEBUG|lightstreamer.actions|Session Thread <1>|Subscription 1 is now on hold

[cleggink]

15.Jan.22 12:26:34,191|DEBUG|lightstreamer.session|Session Thread <1>|SessionManager state change: OFF -> STREAMING_WS

seems to be the final action before the uncaught exempion

[giuseppe.corti]

Hi cleggink,

Strange, it seems that your project misses a netty class, that is a dependecny of the library, please could you just try to add this to your pom?

<!-- https://mvnrepository.com/artifact/io.netty/netty-all -->
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.1.46.Final</version>
</dependency>

Regards,
Giuseppe

[cleggink]

It was a missing dependancy. I'm ashamed to admit that. Any idea what this means?

|DEBUG|lightstreamer.protocol|Session Thread <1>|New message (1): CONERR,60,License not valid for this Client version

[giuseppe.corti]

Okay, now we indeed have a client library version compatibility problem. You should double check with your data provider.
In any case maybe you could give a try to 4.2.x version (www.lightstreamer.com/repo/maven/com/lightstreamer/ls-javase-client/).