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https://issues.apache.org/jira/browse/FELIX-6746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17908820#comment-17908820
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Paul Rütter commented on FELIX-6746:
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I added a reproducer in a integration test, so we can look into a solution.
See
https://github.com/apache/felix-dev/compare/maintenance/FELIX-6746-websocketservlet-init-NPE?expand=1
> JettyWebSocketServlet: Error during calling init()
> --------------------------------------------------
>
> Key: FELIX-6746
> URL: https://issues.apache.org/jira/browse/FELIX-6746
> Project: Felix
> Issue Type: Bug
> Components: HTTP Service
> Affects Versions: http.jetty12-1.0.19
> Reporter: Andreas Lemmer
> Priority: Major
>
> Bundle {{http.jetty12-1.0.19-with-jetty-websockets}}
> When registering a {{new
> org.apache.felix.http.javaxwrappers.ServletWrapper.ServletWrapper(new
> JettyWebSocketServlet())}} at the {{HttpService}}, there is an Exception:
> {{SEVERE 0 [org.apache.felix.http] Error during calling init() on servlet
> (JettyWebSocketServlet-class)}}
> {{ jakarta.servlet.ServletException: java.lang.NullPointerException: Cannot
> invoke "org.eclipse.jetty.server.handler.ContextHandler.getContext()" because
> "contextHandler" is null}}
> {{ at
> org.eclipse.jetty.ee10.websocket.server.JettyWebSocketServlet.init(JettyWebSocketServlet.java:178)}}
> {{ at jakarta.servlet.GenericServlet.init(GenericServlet.java:178)}}
> {{ at jakarta.servlet.http.HttpServlet.init(HttpServlet.java:107)}}
> {{ at
> org.apache.felix.http.base.internal.handler.ServletHandler.init(ServletHandler.java:178)}}
> {{ at
> org.apache.felix.http.base.internal.registry.ServletRegistry.tryToActivate(ServletRegistry.java:395)}}
> {{ at
> org.apache.felix.http.base.internal.registry.ServletRegistry.addServlet(ServletRegistry.java:163)}}
> {{ at
> org.apache.felix.http.base.internal.registry.PerContextHandlerRegistry.registerServlet(PerContextHandlerRegistry.java:217)}}
> {{ at
> org.apache.felix.http.base.internal.service.SharedHttpServiceImpl.registerServlet(SharedHttpServiceImpl.java:78)}}
> {{ at
> org.apache.felix.http.base.internal.service.PerBundleHttpServiceImpl.registerServlet(PerBundleHttpServiceImpl.java:163)}}
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