Hello!
I'm playing with the "wicket-atmosphere" module and, while generally it
works fine, I stumbled upon a couple of issues:
1) Suppose I have a Page with a method marked with @Subscribe annotation,
this subscribtion has a filter attached. Is it possible to get the Page
instance inside the filter to, e.g., access Page instance variables when
deciding on event filtering?
2) It seems like sometimes empty Atmosphere messages are sent to a page
when a filter rejected the specific message. For such events I have the
following log record on the server
[Atmosphere-AsyncWrite-1] INFO o.a.w.atmosphere.AtmosphereBehavior -
onBroadcast: 0<|msg|>
and there is a JS error in a browser after receiveing the event
ERROR: Wicket.Ajax.Call.failure: Error while parsing response: Could not
find root <ajax-response> element
What is the purpose of sending empty messages to a browser?
3) In my app Apache Shiro framework is integrated via a plugin adapted from
"fiftyfive-wicket-shiro" project. User credentials are checked in an AJAX login
form. In order to prevent a session fixation attack there is a call to
invalidate old and create new session right before credentials check:
getSession().replaceSession(); // inside AjaxFallbackButton.onSubmit()
After integration with Atmosphere this code no longer works, an exception in
thrown on login attempt:
22:11:41.698 [qtp18908406-24] ERROR o.a.wicket.DefaultExceptionMapper -
Unexpected error occurred
org.apache.wicket.WicketRuntimeException: Method onRequest of interface
org.apache.wicket.behavior.IBehaviorListener targeted at
org.apache.wicket.ajax.markup.html.form.AjaxFallbackButton$1@f78197 on
component [AjaxFallbackButton [Component id = submit]] threw an exception
at
org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:268)
~[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:241)
~[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:247)
~[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:226)
~[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:840)
~[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
~[wicket-request-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:254)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:211)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:282)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:244)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:267)
[wicket-core-6.6.0.jar:6.6.0]
at
org.atmosphere.util.AtmosphereFilterChain.doFilter(AtmosphereFilterChain.java:155)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.util.AtmosphereFilterChain.invokeFilterChain(AtmosphereFilterChain.java:132)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.handler.ReflectorServletProcessor$FilterChainServletWrapper.service(ReflectorServletProcessor.java:314)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.handler.ReflectorServletProcessor.onRequest(ReflectorServletProcessor.java:172)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.cpr.AsynchronousProcessor.action(AsynchronousProcessor.java:256)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.cpr.AsynchronousProcessor.suspended(AsynchronousProcessor.java:166)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.container.Jetty7CometSupport.service(Jetty7CometSupport.java:96)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.container.JettyAsyncSupportWithWebSocket.service(JettyAsyncSupportWithWebSocket.java:70)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:1307)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at
org.atmosphere.cpr.AtmosphereServlet.doPost(AtmosphereServlet.java:293)
[atmosphere-runtime-1.0.8.jar:1.0.8]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
[javax.servlet-3.0.0.v201112011016.jar:na]
............
Caused by: java.lang.IllegalStateException: null
at
org.eclipse.jetty.server.session.AbstractSession.checkValid(AbstractSession.java:109)
~[na:na]
at
org.eclipse.jetty.server.session.HashedSession.checkValid(HashedSession.java:73)
~[na:na]
at
org.eclipse.jetty.server.session.AbstractSession.getAttribute(AbstractSession.java:132)
~[na:na]
at
org.apache.wicket.session.HttpSessionStore.getAttribute(HttpSessionStore.java:264)
~[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.session.HttpSessionStore.lookup(HttpSessionStore.java:201)
~[wicket-core-6.6.0.jar:6.6.0]
at org.apache.wicket.Session.bind(Session.java:262)
~[wicket-core-6.6.0.jar:6.6.0]
at org.apache.wicket.Session.replaceSession(Session.java:538)
~[wicket-core-6.6.0.jar:6.6.0]
at
org.myapp.MyWebApplication$1.replaceSession(MyWebApplication.java:66)
~[classes/:na]
at org.myapp.IndexPage$2.onSubmit(IndexPage.java:137) ~[classes/:na]
at
org.apache.wicket.ajax.markup.html.form.AjaxFallbackButton$1.onSubmit(AjaxFallbackButton.java:76)
~[wicket-core-6.6.0.jar:6.6.0]
Thank you.
