The filter is part of a WAB. It is registered with the @WebFilter
annotation.
I found the the reason for the problem. It was an invalid configuration of
the Apache Httpd server that is a reverse proxy in front of Karaf.
In Karaf runs a Vaddin application. It uses websockets. The Apache Httpd
service had the following proxy configuration:
<Location /appl>
RewriteEngine on
ProxyPass "*https*://appl4/"
ProxyPassReverse "*https*://appl4/"
RewriteCond %{HTTP:UPGRADE} ^websocket$ [NC]
RewriteCond %{HTTP:CONNECTION} Upgrade$ [NC]
RewriteRule /ui/PUSH?(.*) "*ws*://appl4/ui/push$1" [P]
</Location>
The websocket communiation used the *ws *(and not *wss*) protocol on the
Karaf *https *port.
The Vaadin javascript produced in 10 seconds thousands of http requests.
Each request produced the above error.
Thank you
Richard
[email protected] schrieb am Dienstag, 23. August 2022 um 16:02:33 UTC+2:
> Hello
>
> How is "de.hierlmeier.web.filter.GlobalRequestFilter" registered?
>
> Pax Web 7 sets "async" flag in
> org.ops4j.pax.web.service.jetty.internal.JettyServerImpl#addFilter():
>
> holder.setAsyncSupported(model.isAsyncSupported());
>
> In Whiteboard, this flag comes from
> "osgi.http.whiteboard.filter.asyncSupported" service property on the filter
> being registered but also from
> @javax.servlet.annotation.WebFilter/asyncSupported.
>
> regards
> Grzegorz Grzybek
>
> wt., 23 sie 2022 o 15:30 'Richard Hierlmeier' via OPS4J <
> [email protected]> napisał(a):
>
>> today a had a problem in a Karaf 4.3.7 instance. The karaf.log was full
>> with the following log messages:
>>
>> 2022-08-23 14:48:18,690 [qtp550196699-89048] [ERROR]
>> [AtmosphereFramework] AtmosphereFramework exception [] [
>> java.lang.IllegalStateException: !asyncSupported:
>> de.hierlmeier.web.filter.GlobalRequestFilter==de.hierlmeier.web.filter.GlobalRequestFilter@6849a9c4{inst=true,async=false,src=EMBEDDED:null}
>> at org.eclipse.jetty.server.Request.startAsync(Request.java:2340)
>> at
>> javax.servlet.ServletRequestWrapper.startAsync(ServletRequestWrapper.java:464)
>> at
>> org.atmosphere.cpr.AtmosphereRequestImpl.startAsync(AtmosphereRequestImpl.java:633)
>> at
>> org.atmosphere.container.Servlet30CometSupport.suspend(Servlet30CometSupport.java:94)
>> at
>> org.atmosphere.container.Servlet30CometSupport.service(Servlet30CometSupport.java:69)
>> at
>> org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:2297)
>> at
>> com.vaadin.server.communication.PushRequestHandler.handleRequest(PushRequestHandler.java:234)
>> at
>> com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1637)
>> at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:464)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
>> at
>> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1631)
>> at
>> org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:292)
>> at
>> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
>> at
>> de.hierlmeier.web.filter.GlobalRequestFilter.doFilter(GlobalRequestFilter.java:486)
>> at
>> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:201)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
>> at
>> org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:74)
>>
>> Jetty thinks that the GlobalRequestFilter does not support async
>> processing, but it does.
>>
>> Under what circumstances marks Jetty a filter as non async?
>>
>>
>> Regard
>>
>> Richard
>>
>>
>>
>> --
>> --
>> ------------------
>> OPS4J - http://www.ops4j.org - [email protected]
>>
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>> .
>>
>
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