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Posted to users@cocoon.apache.org by Gabriel Gruber <Ga...@workflow.at> on 2008/11/16 12:25:06 UTC
Strange Exception with Cocoon2.2
Hello,
I am facing a strange issue with our product, which was recently ported to
cocoon 2.2 and is now in the final stabilization phase. It seems that for
some reason various exceptions occure on the log which might have
something to do with servlet service framework or inproper configuration
of jetty. this particular exception is repoduceable as we get it, when
driving a seleninium testcase against an embedded jetty/hsqldb
configuration of our product.
Interestingly this does not have any bad consequence in the frontend.
however something seems to go wrong...
Stacktrace:
javax.servlet.ServletException: org.apache.cocoon.ProcessingException:
Failed to process reader
at <map:read type="servletLinkRewriter"> -
file:///C:/WINDOWS/TEMP/Jetty_0_0_0_0_0_webapp____75ty4m/blocks/cocoon-forms-impl/sitemap.xmap:59:104
at <map:match> -
file:///C:/WINDOWS/TEMP/Jetty_0_0_0_0_0_webapp____75ty4m/blocks/cocoon-forms-impl/sitemap.xmap:58:58
at
org.apache.cocoon.servlet.RequestProcessor.service(RequestProcessor.java:226)
at
org.apache.cocoon.sitemap.SitemapServlet.service(SitemapServlet.java:82)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at sun.reflect.GeneratedMethodAccessor229.invoke(Unknown
Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at
org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:77)
at
org.apache.cocoon.jnet.URLHandlerFactoryCollector.installURLHandlers(URLHandlerFactoryCollector.java:37)
at sun.reflect.GeneratedMethodAccessor228.invoke(Unknown
Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627)
at
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616)
at
org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:64)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy4.service(Unknown Source)
at
org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:481)
at
org.apache.cocoon.servletservice.ServletServiceContext$NamedDispatcher.forward(ServletServiceContext.java:424)
at
org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:494)
at
org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:455)
at
org.apache.cocoon.servletservice.spring.ServletFactoryBean$ServiceInterceptor.invoke(ServletFactoryBean.java:245)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy61.service(Unknown Source)
at
org.apache.cocoon.servletservice.DispatcherServlet.service(DispatcherServlet.java:106)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingServlet.service(ReloadingServlet.java:91)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
at
org.apache.cocoon.servlet.multipart.MultipartFilter.doFilter(MultipartFilter.java:131)
at
org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingServletFilter.doFilter(ReloadingServletFilter.java:51)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
org.apache.cocoon.servlet.DebugFilter.doFilter(DebugFilter.java:167)
at
org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingServletFilter.doFilter(ReloadingServletFilter.java:51)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingSpringFilter.doFilter(ReloadingSpringFilter.java:67)
at
org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingServletFilter.doFilter(ReloadingServletFilter.java:51)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
at
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:324)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:828)
at
org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at
org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at
org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
Caused by: org.apache.cocoon.ProcessingException: Failed to process reader
at <map:read type="servletLinkRewriter"> -
file:///C:/WINDOWS/TEMP/Jetty_0_0_0_0_0_webapp____75ty4m/blocks/cocoon-forms-impl/sitemap.xmap:59:104
at <map:match> -
file:///C:/WINDOWS/TEMP/Jetty_0_0_0_0_0_webapp____75ty4m/blocks/cocoon-forms-impl/sitemap.xmap:58:58
at
org.apache.cocoon.ProcessingException.throwLocated(ProcessingException.java:111)
at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.handleException(AbstractProcessingPipeline.java:944)
at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processReader(AbstractCachingProcessingPipeline.java:918)
at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:436)
at sun.reflect.GeneratedMethodAccessor276.invoke(Unknown
Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
at $Proxy68.process(Unknown Source)
at
org.apache.cocoon.components.treeprocessor.sitemap.ReadNode.invoke(ReadNode.java:94)
at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:55)
at
org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:87)
at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
at
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
at
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:81)
at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:241)
at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:173)
at
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:247)
at
org.apache.cocoon.servlet.RequestProcessor.process(RequestProcessor.java:347)
at
org.apache.cocoon.servlet.RequestProcessor.service(RequestProcessor.java:169)
... 57 more
Caused by: org.mortbay.jetty.EofException
at
org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:760)
at
org.mortbay.jetty.AbstractGenerator$Output.flush(AbstractGenerator.java:566)
at
org.mortbay.jetty.HttpConnection$Output.flush(HttpConnection.java:910)
at
org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:614)
at
org.apache.cocoon.servletservice.HttpServletResponseBufferingWrapper$ForwardingOrLimitingServletOutputStream.write(HttpServletResponseBufferingWrapper.java:281)
at java.io.OutputStream.write(OutputStream.java:99)
at java.io.OutputStream.write(OutputStream.java:58)
at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processReader(AbstractCachingProcessingPipeline.java:834)
... 75 more
Caused by: java.net.SocketException: Connection reset by peer: socket
write error
at java.net.SocketOutputStream.socketWrite0(Native
Method)
at
java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at
java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at
org.mortbay.io.ByteArrayBuffer.writeTo(ByteArrayBuffer.java:169)
at
org.mortbay.io.bio.StreamEndPoint.flush(StreamEndPoint.java:122)
at
org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:693)
... 82 more
Does anyone have a clue, what could be the issue?
cheers,
Gabriel
______________________
Mag. Gabriel Gruber
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Workflow EDV GmbH, Dannebergplatz 6/23, A-1030 Wien
Re: Strange Exception with Cocoon2.2
Posted by Simone Gianni <si...@apache.org>.
Hi Gabriel,
yes, Grzegorz is right, someone is closing the Jetty output stream too
early ... it could be cocoon, it could be Jetty itself, it could even be
the client or a router dropping the connection. In fact, I have seen
this error not only in cocoon but in many other frameworks as well.
Basically, there is some piece of data (maybe just a whitespace, or a
carriage return) that someone is trying to write to the client, but
someone else closed the connection already. Seems like Jetty is the one
that most often complains about this error... probably it has a better
check for this case, or a buggy way of closing the connection :).
Anyway, if this stack trace is common (happens at least most of the
time, if not always) then maybe it could be the case to investigate
further. Seeing the stack trace, seems like it is the line
AbstractCachingProcessingPipeline.java:834 that is trying to write to
the stream. If you find a somestream.write(..) call there, then please
file a bug. While it is true that this is most probably a jetty
misbehaviour, at the same time we could investigate if Cocoon is really
writing after it should and Jetty is simply picky enough to raise an
error in this case.
Simone
Gabriel Gruber wrote:
>
> Hello,
>
> I am facing a strange issue with our product, which was recently
> ported to cocoon 2.2 and is now in the final stabilization phase. It
> seems that for some reason various exceptions occure on the log which
> might have something to do with servlet service framework or inproper
> configuration of jetty. this particular exception is repoduceable as
> we get it, when driving a seleninium testcase against an embedded
> jetty/hsqldb configuration of our product.
>
> Interestingly this does not have any bad consequence in the frontend.
> however something seems to go wrong...
>
> Stacktrace:
> javax.servlet.ServletException: org.apache.cocoon.ProcessingException:
> Failed to process reader
>
> at <map:read type="servletLinkRewriter"> -
> file:///C:/WINDOWS/TEMP/Jetty_0_0_0_0_0_webapp____75ty4m/blocks/cocoon-forms-impl/sitemap.xmap:59:104
>
> at <map:match> -
> file:///C:/WINDOWS/TEMP/Jetty_0_0_0_0_0_webapp____75ty4m/blocks/cocoon-forms-impl/sitemap.xmap:58:58
>
> at
> org.apache.cocoon.servlet.RequestProcessor.service(RequestProcessor.java:226)
>
> at
> org.apache.cocoon.sitemap.SitemapServlet.service(SitemapServlet.java:82)
>
> at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>
> at
> sun.reflect.GeneratedMethodAccessor229.invoke(Unknown Source)
>
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:585)
>
> at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
>
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
>
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
>
> at
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:77)
>
> at
> org.apache.cocoon.jnet.URLHandlerFactoryCollector.installURLHandlers(URLHandlerFactoryCollector.java:37)
>
> at
> sun.reflect.GeneratedMethodAccessor228.invoke(Unknown Source)
>
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:585)
>
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627)
>
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616)
>
> at
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:64)
>
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
>
> at
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
>
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
>
> at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
>
> at $Proxy4.service(Unknown Source)
>
> at
> org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:481)
>
> at
> org.apache.cocoon.servletservice.ServletServiceContext$NamedDispatcher.forward(ServletServiceContext.java:424)
>
> at
> org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:494)
>
> at
> org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:455)
>
> at
> org.apache.cocoon.servletservice.spring.ServletFactoryBean$ServiceInterceptor.invoke(ServletFactoryBean.java:245)
>
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
>
> at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
>
> at $Proxy61.service(Unknown Source)
>
> at
> org.apache.cocoon.servletservice.DispatcherServlet.service(DispatcherServlet.java:106)
>
> at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>
> at
> org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingServlet.service(ReloadingServlet.java:91)
>
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
>
> at
> org.apache.cocoon.servlet.multipart.MultipartFilter.doFilter(MultipartFilter.java:131)
>
> at
> org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingServletFilter.doFilter(ReloadingServletFilter.java:51)
>
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>
> at
> org.apache.cocoon.servlet.DebugFilter.doFilter(DebugFilter.java:167)
>
> at
> org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingServletFilter.doFilter(ReloadingServletFilter.java:51)
>
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>
> at
> org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingSpringFilter.doFilter(ReloadingSpringFilter.java:67)
>
> at
> org.apache.cocoon.tools.rcl.wrapper.servlet.ReloadingServletFilter.doFilter(ReloadingServletFilter.java:51)
>
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
>
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
>
> at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>
> at org.mortbay.jetty.Server.handle(Server.java:324)
>
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:828)
>
> at
> org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
>
> at
> org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>
> at
> org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>
> at
> org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
>
> at
> org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
>
> Caused by: org.apache.cocoon.ProcessingException: Failed to process reader
>
> at <map:read type="servletLinkRewriter"> -
> file:///C:/WINDOWS/TEMP/Jetty_0_0_0_0_0_webapp____75ty4m/blocks/cocoon-forms-impl/sitemap.xmap:59:104
>
> at <map:match> -
> file:///C:/WINDOWS/TEMP/Jetty_0_0_0_0_0_webapp____75ty4m/blocks/cocoon-forms-impl/sitemap.xmap:58:58
>
> at
> org.apache.cocoon.ProcessingException.throwLocated(ProcessingException.java:111)
>
> at
> org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.handleException(AbstractProcessingPipeline.java:944)
>
> at
> org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processReader(AbstractCachingProcessingPipeline.java:918)
>
> at
> org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:436)
>
> at
> sun.reflect.GeneratedMethodAccessor276.invoke(Unknown Source)
>
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:585)
>
> at
> org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
>
> at $Proxy68.process(Unknown Source)
>
> at
> org.apache.cocoon.components.treeprocessor.sitemap.ReadNode.invoke(ReadNode.java:94)
>
> at
> org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:55)
>
> at
> org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:87)
>
> at
> org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
>
> at
> org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
>
> at
> org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
>
> at
> org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:81)
>
> at
> org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:241)
>
> at
> org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:173)
>
> at
> org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:247)
>
> at
> org.apache.cocoon.servlet.RequestProcessor.process(RequestProcessor.java:347)
>
> at
> org.apache.cocoon.servlet.RequestProcessor.service(RequestProcessor.java:169)
>
> ... 57 more
>
> Caused by: org.mortbay.jetty.EofException
>
> at
> org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:760)
>
> at
> org.mortbay.jetty.AbstractGenerator$Output.flush(AbstractGenerator.java:566)
>
> at
> org.mortbay.jetty.HttpConnection$Output.flush(HttpConnection.java:910)
>
> at
> org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:614)
>
> at
> org.apache.cocoon.servletservice.HttpServletResponseBufferingWrapper$ForwardingOrLimitingServletOutputStream.write(HttpServletResponseBufferingWrapper.java:281)
>
> at java.io.OutputStream.write(OutputStream.java:99)
>
> at java.io.OutputStream.write(OutputStream.java:58)
>
> at
> org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processReader(AbstractCachingProcessingPipeline.java:834)
>
> ... 75 more
>
> Caused by: java.net.SocketException: Connection reset by peer: socket
> write error
>
> at java.net.SocketOutputStream.socketWrite0(Native Method)
>
> at
> java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
>
> at
> java.net.SocketOutputStream.write(SocketOutputStream.java:136)
>
> at
> org.mortbay.io.ByteArrayBuffer.writeTo(ByteArrayBuffer.java:169)
>
> at
> org.mortbay.io.bio.StreamEndPoint.flush(StreamEndPoint.java:122)
>
> at
> org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:693)
>
> ... 82 more
>
> Does anyone have a clue, what could be the issue?
>
> cheers,
>
> Gabriel
> ______________________
> Mag. Gabriel Gruber
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> Workflow EDV GmbH, Dannebergplatz 6/23, A-1030 Wien
--
Simone Gianni CEO Semeru s.r.l. Apache Committer
http://www.simonegianni.it/
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Re: Strange Exception with Cocoon2.2
Posted by Grzegorz Kossakowski <gr...@tuffmail.com>.
Gabriel Gruber pisze:
>
> Hello,
Hi.
> I am facing a strange issue with our product, which was recently ported
> to cocoon 2.2 and is now in the final stabilization phase. It seems that
> for some reason various exceptions occure on the log which might have
> something to do with servlet service framework or inproper configuration
> of jetty. this particular exception is repoduceable as we get it, when
> driving a seleninium testcase against an embedded jetty/hsqldb
> configuration of our product.
>
> Interestingly this does not have any bad consequence in the frontend.
> however something seems to go wrong...
<snip/>
> Caused by: java.net.SocketException: Connection reset by peer: socket
> write error
>
> at java.net.SocketOutputStream.socketWrite0(Native Method)
>
> at
> java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
>
> at
> java.net.SocketOutputStream.write(SocketOutputStream.java:136)
>
> at
> org.mortbay.io.ByteArrayBuffer.writeTo(ByteArrayBuffer.java:169)
>
> at
> org.mortbay.io.bio.StreamEndPoint.flush(StreamEndPoint.java:122)
>
> at
> org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:693)
>
> ... 82 more
>
> Does anyone have a clue, what could be the issue?
I believe the rest of the stack trace is not relevant thus I wouldn't blame SSF or Cocoon in
general. The message "Connection reset by peer: socket write error" suggests more a problem with
Jetty or application accessing jetty. Basically it looks like someone is closing connection too
early so the rest of data cannot be written.
Yet, it's interesting that it does not affect the client and the data it receives.
I would suggest testing this with different clinet/servlet container configuration. Also, does it
happen with responses having 200 (HTTP_OK) status code?
--
Grzegorz Kossakowski
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