Hi Please create an issue at https://github.com/ops4j/org.ops4j.pax.web/issues BTW - did you install pax-web-jetty-websockets feature?
regards Grzegorz Grzybek pt., 16 sty 2026 o 09:05 'Richard Hierlmeier' via OPS4J < [email protected]> napisał(a): > > Hi Grzegorz, > > I can reproduce the error using this sample project: > https://github.com/rh-desoftware/vaadin8_karaf_demo. > I assume you took the code for your itest from this repository. > I believe that WebSocket support is not active in your itest because you > have only installed vaadin-push. > > WebSockets for Vaadin 8 on Karaf 4.4.8 with Pax Web 8.0.33 is not working. > > The repo contains an example for war and one for whiteboard. In both > solutions the > "java.lang.IllegalStateException: Unable to configure jsr356 at that > stage. ServerContainer is null" > occurs. > > Regards > Richard > > [email protected] schrieb am Donnerstag, 15. Januar 2026 um 17:29:52 > UTC+1: > >> Hello >> >> At first glance, it should be "Web-ContextPath", not "WebContext-Path". >> See >> https://docs.osgi.org/specification/osgi.cmpn/8.0.0/service.war.html#i3077053 >> >> And we actually have a Vaadin 8 example: >> https://github.com/ops4j/org.ops4j.pax.web/tree/pax-web-8.0.x/samples/samples-war/war-vaadin08 >> We also have a test that installs it as webbundle: WAB: >> https://github.com/ops4j/org.ops4j.pax.web/blob/e15cb08d433e2d500519b65f4a0cb7c273f4399a/pax-web-itest/pax-web-itest-container/pax-web-itest-container-common/src/main/java/org/ops4j/pax/web/itest/container/war/AbstractWarVaadin08IntegrationTest.java#L35 >> >> I remember ensuring that WebSockets work with Vaadin. But this was quite >> long time ago... >> >> kind regards >> Grzegorz Grzybek >> >> czw., 15 sty 2026 o 17:00 'Richard Hierlmeier' via OPS4J < >> [email protected]> napisał(a): >> >>> I have to upgrade a Vaadin 8 application from Karaf 4.3 (pax-web 7) to >>> Karaf 4.4.8 (pax-web 8). >>> >>> The OSGi bundle with the Vaadin application is a WAB. >>> It has a WebContext-Path defined in the OSGi header. >>> >>> The VaadinServlet sets up Atmosphere and tries to detect the WebSocket >>> support of the servlet engine. It detects that the servlet engine has >>> JSR356 support and tries to set up Atmosphere with the class >>> org.atmosphere.container.JSR356AsyncSupport. >>> >>> This is the constructor of JSR356AsyncSupport: >>> >>> public JSR356AsyncSupport(AtmosphereConfig config, ServletContext ctx) { >>> super(config); >>> ServerContainer container = (ServerContainer) >>> ctx.getAttribute(ServerContainer.class.getName()); >>> if (container == null) { >>> if (ctx.getServerInfo().contains("WebLogic")) { >>> logger.error("{} must use JDK 1.8+ with WebSocket", >>> ctx.getServerInfo()); >>> } >>> throw new IllegalStateException("Unable to configure jsr356 at >>> that stage. ServerContainer is null"); >>> } >>> } >>> It throws this IllegalStateException. >>> >>> How can I get the ServerContainer into the ServletContext? >>> >>> Regards, >>> Richard >>> >>> -- >>> -- >>> ------------------ >>> OPS4J - http://www.ops4j.org - [email protected] >>> >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "OPS4J" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion visit >>> https://groups.google.com/d/msgid/ops4j/552fdab1-ecf2-40cc-b2e3-ec74b76acd70n%40googlegroups.com >>> <https://groups.google.com/d/msgid/ops4j/552fdab1-ecf2-40cc-b2e3-ec74b76acd70n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > -- > ------------------ > OPS4J - http://www.ops4j.org - [email protected] > > --- > You received this message because you are subscribed to the Google Groups > "OPS4J" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/d/msgid/ops4j/768c6542-87ea-417b-ac72-bb45172aa4c5n%40googlegroups.com > <https://groups.google.com/d/msgid/ops4j/768c6542-87ea-417b-ac72-bb45172aa4c5n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- -- ------------------ OPS4J - http://www.ops4j.org - [email protected] --- You received this message because you are subscribed to the Google Groups "OPS4J" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/ops4j/CAAdXmhor%2BfjCa4u%3DC9wjhj3-NYUDp14nS5A0yie3Y0bnADgdaw%40mail.gmail.com.
