May be this is a side effect of my fix of https://github.com/ops4j/org.ops4j.pax.web/issues/2135. I have a patched version of pax-web 8.0.33 with that fix active.
Richard [email protected] schrieb am Donnerstag, 29. Januar 2026 um 16:05:56 UTC+1: > Hello > > This is strange, because the error is caused by > org.eclipse.jetty.websocket.jsr356.server.deploy.WebSocketServerContainerInitializer, > > and not by your listener... > > Also Pax Web has integration tests that use websockets with Jetty and this > scenario was verified. > > Please create a GitHub issue - it'd be great checking some reproducer. > > kind regards > Grzegorz Grzybek > > czw., 29 sty 2026 o 15:54 'Richard Hierlmeier' via OPS4J < > [email protected]> napisał(a): > >> >> Is it possible to defined a ServletContextListener with HTTP whiteboard? >> >> I defined this service: >> >> @Component(service = ServletContextListener.class) >> @HttpWhiteboardListener >> @HttpWhiteboardContextSelect("osgi.http.whiteboard.context.path=/app)") >> public class MyServletContextListener implements ServletContextListener >> { >> } >> >> Jetty (pax-web 8.0.33) logs this exception: >> >> 2026-01-29T15:41:50,090 | ERROR | paxweb-config-1-thread-1 | >> JettyServerWrapper | 77 - org.ops4j.pax.web.pax-web-jetty - >> 8.0.33 | Section 4.4.3 of the Servlets specification allows >> ServletContextListeners to be added only by ServletContainerInitializers, >> declared in web.xml or web-fragment.xml or by discovery of @WebListener >> annotated classes >> java.lang.UnsupportedOperationException: Section 4.4.3 of the Servlets >> specification allows ServletContextListeners to be added only by >> ServletContainerInitializers, declared in web.xml or web-fragment.xml or by >> discovery of @WebListener annotated classes >> at >> org.ops4j.pax.web.service.spi.servlet.DynamicRegistrations.register(DynamicRegistrations.java:322) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.spi.servlet.DynamicRegistrations.addListener(DynamicRegistrations.java:293) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.spi.servlet.OsgiDynamicServletContext.addListener(OsgiDynamicServletContext.java:139) >> >> ~[?:?] >> at >> org.eclipse.jetty.websocket.jsr356.server.deploy.WebSocketServerContainerInitializer.onStartup(WebSocketServerContainerInitializer.java:278) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.spi.servlet.SCIWrapper.onStartup(SCIWrapper.java:43) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.jetty.internal.PaxWebServletContextHandler.lambda$startContext$1(PaxWebServletContextHandler.java:258) >> >> ~[?:?] >> at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] >> at >> org.ops4j.pax.web.service.jetty.internal.PaxWebServletContextHandler.startContext(PaxWebServletContextHandler.java:252) >> >> ~[?:?] >> at >> org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:916) >> >> ~[?:?] >> at >> org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:288) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.jetty.internal.PaxWebServletContextHandler.doStart(PaxWebServletContextHandler.java:308) >> >> ~[?:?] >> at >> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.jetty.internal.JettyServerWrapper.ensureServletContextStarted(JettyServerWrapper.java:2436) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.jetty.internal.JettyServerWrapper.lambda$visitWebSocketModelChange$20(JettyServerWrapper.java:1929) >> >> ~[?:?] >> at java.util.ArrayList.forEach(ArrayList.java:1596) ~[?:?] >> at >> java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1116) >> ~[?:?] >> at >> org.ops4j.pax.web.service.jetty.internal.JettyServerWrapper.visitWebSocketModelChange(JettyServerWrapper.java:1914) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.spi.task.WebSocketModelChange.accept(WebSocketModelChange.java:90) >> >> ~[?:?] >> at org.ops4j.pax.web.service.spi.task.Batch.accept(Batch.java:430) ~[?:?] >> at >> org.ops4j.pax.web.service.jetty.internal.JettyServerController.sendBatch(JettyServerController.java:169) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.internal.HttpServiceEnabled.lambda$doRegisterWebSocket$20(HttpServiceEnabled.java:1968) >> >> ~[?:?] >> at >> org.ops4j.pax.web.service.spi.model.ServerModel.lambda$run$2(ServerModel.java:541) >> >> ~[?:?] >> at >> java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) >> >> ~[?:?] >> at >> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572) >> ~[?:?] >> at java.util.concurrent.FutureTask.run(FutureTask.java:317) ~[?:?] >> at >> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) >> >> ~[?:?] >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) >> >> ~[?:?] >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) >> >> ~[?:?] >> at java.lang.Thread.run(Thread.java:1583) [?:?] >> >> -- >> -- >> ------------------ >> OPS4J - 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