Access violation issue in Silverlight Application - silverlight

We are having Silverlight application which shows live data from the service onto the client.
Over a period of time we see that application gets hung and on refresh the IE crashes with with the error message saying internet has stopped working.\
On taking the dump and analyzing it using debugdiag we found that the callstack of it shows,
0x00000000
npctrl!ComAutomationCheckCrossApartmentAccess+d079
mshtml!ReleaseInterface+a
mshtml!CAttrArray::FreeSpecial2+e4
mshtml!CMarkup::BreakAASpecial+f
mshtml!CMarkup::BreakCircularMemoryReferences+eb
mshtml!CMarkup::UnloadContents+36f
mshtml!CMarkup::TearDownMarkupHelper+53
mshtml!CMarkup::TearDownMarkup+54
mshtml!COmWindowProxy::SwitchMarkup+5c5
mshtml!CMarkup::SetInteractiveInternal+134
mshtml!CMarkup::RequestReadystateInteractive+6c
mshtml!CMarkup::BlockScriptExecutionHelper+162
mshtml!CHtmPost::Exec+418
mshtml!CHtmPost::Run+15
mshtml!PostManExecute+1fd
mshtml!PostManResume+f8
mshtml!CHtmPost::OnDwnChanCallback+10
mshtml!CDwnChan::OnMethodCall+19
mshtml!GlobalWndOnMethodCall+104
mshtml!GlobalWndProc+183
user32!InternalCallWinProc+28
user32!UserCallWinProcCheckWow+150
user32!DispatchMessageWorker+306
user32!DispatchMessageW+f
ieframe!CTabWindow::_TabWindowThreadProc+54c
ieframe!LCIETab_ThreadProc+2c1
iertutil!CIsoScope::RegisterThread+ab
kernel32!BaseThreadStart+37
We are not able to analyze this any further as it does not give a meaningful analysis.
What is npctrl.dll and why it? Why is it giving ComAutomationCheckCrossApartmentAccess error?

Related

FaspManager embedded client stops prematurely while sending multiple files

I am using FaspManager as an embedded client in my Java application. My program works fine when I am sending just a single file. When I am trying to send multiple files (each having its own session & jobId) they are starting well and progressing for some time. However, after several minutes when one or two of the transfers complete, rest all of the transfers are stopping without completing.
In the aspera log I can see below messages:
2019-02-11 20:48:22.985 INFO 11120 --- [il.SelectThread] c.c.e.t.aspera.FaspTransferListener : Client session: 149aaa9b-d632-43e4-9653-fbbf768c69b5 | PROGRESS | Rate: 353.6 Kb/s | Target rate: 1.0 Gb/s
2019-02-11 20:48:23.024 INFO 11120 --- [il.SelectThread] com.asperasoft.faspmanager.Session : 149aaa9b-d632-43e4-9653-fbbf768c69b5 - cancel sent
I have not been able to find out who/how a cancel request has been sent. I have tried searching in Google for possible cause but have not been able to resolve it yet. So, I will really appreciate any help on this.
Thank you,
Sourav
The cancel sent message in Session is called if the user specifically calls FaspManager#cancelTransfer(String sessionId), or FaspManager#stop(), or if an error occurs while reading an input stream in FileTransferSession#addSource(StreamReader, String).
I'd guess you're calling stop on the FaspManager after the first session finishes, but I'd need a more complete log, or a snippet of your code to see.

How to use ReactiveUI with WinForms

I have decided to learn ReactiveUI after seeing what can be done with it, but my enthusiasm has been broken at the first attempt to run a simple project. I have recreated the example from this article, using reactiveui-winforms.Net40 version 6.5.0 from NuGet. Everything compiles ok, but i get an exception during runtime at the following line
var OKCmdObs = this.WhenAny(vm => vm.EnteredText,
s => !string.IsNullOrWhiteSpace(s.Value));
System.InvalidOperationException occurred
HResult=-2146233079
Message=The current thread has no Dispatcher associated with it.
Source=System.Reactive.Windows.Threading
StackTrace:
at System.Reactive.Concurrency.DispatcherScheduler.get_Current()
at ReactiveUI.PlatformRegistrations.<>c.<Register>b__0_7() in C:\workspace\git-perso\ReactiveUI\ReactiveUI\Platform\Registrations.cs:line 75
InnerException:
Does anyone have any idea of what's happening ?
The mentioned article does not have the compiled project available for download, and i didn't find any complete "Hello-World" project for reactiveui-winforms.
My test project can be downloaded here.
In Visual Studio, if i Continue(F5), another exception occures :
System.NullReferenceException occurred
HResult=-2147467261
Message=Object reference not set to an instance of an object.
Source=ReactiveUI
StackTrace:
at ReactiveUI.IROObservableForProperty.<>c__DisplayClass1_0.<GetNotificationForProperty>b__6(IReactivePropertyChangedEventArgs`1 x) in C:\workspace\git-perso\ReactiveUI\ReactiveUI\IROObservableForProperty.cs:line 44
InnerException:
If i continue to hit F5 i get :
System.Exception was unhandled by user code
HResult=-2146233088
Message=An OnError occurred on an object (usually ObservableAsPropertyHelper) that would break a binding or command. To prevent this, Subscribe to the ThrownExceptions property of your objects
Source=ReactiveUI
This exception is caused because RxUI always tries to initialize for WPF, even though (because you're also using the winforms package) it'll override this setting with a Winforms-based scheduler right after.
It should be harmless though, as it's catched and ignored. You're probably hitting it within VS ?

Getting StringIndexOutOfBoundsException when attempting to create a new Form in Codenameone

I am using Netbeans and updated to use the latest codenameone plugin. I am trying to follow the walkthrough tutorial at http://www.codenameone.com/blog/gui-builder-walkthru.html, but I keep on getting a StringIndexOutOfBoundsException when attempting to generate a new Form using the NewGuiBuilderWizardIterator. The following is the stacktrace that I'm seeing. Any and all help would be greatly appreciated!
SEVERE [com.codename1.actions.OpenGuiBuilderAction]: Relative path com\mycompany\myapp\MyApp.java
SEVERE [com.codename1.actions.OpenGuiBuilderAction]: Gui file C:\Users\joshua\Documents\NetBeansProjects\TestGui1\res\guibuilder\com\mycompany\myapp\MyApp.gui
SEVERE [com.codename1.actions.OpenGuiBuilderAction]: Props C:\Users\joshua\Documents\NetBeansProjects\TestGui1\codenameone_settings.properties
SEVERE [com.codename1.actions.OpenGuiBuilderAction]: The GUI file doesn't exist!
WARNING [org.openide.filesystems.Ordering]: Found same position 100 for both Loaders/application/res/Actions/org-openide-actions-OpenAction.shadow and Loaders/application/res/Actions/sep-1.instance
WARNING [org.netbeans.modules.java.JavaTemplateAttributesProvider]: No classpath was found for folder: C:\Users\joshua\Documents\NetBeansProjects\TestGui1#b78894d2:1aed2d64
WARNING [org.openide.WizardDescriptor]
java.lang.StringIndexOutOfBoundsException: String index out of range: -4
at java.lang.String.substring(String.java:1919)
at com.codename1.NewGuiBuilderWizardIterator.instantiate(NewGuiBuilderWizardIterator.java:95)
at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:1046)
at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:605)
at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:439)
at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:248)
at org.openide.loaders.TemplateWizardIteratorWrapper.instantiate(TemplateWizardIteratorWrapper.java:160)
at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:1629)
at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1570)
at org.openide.WizardDescriptor.access$2300(WizardDescriptor.java:92)
[catch] at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:2257)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
You need to select a package when you do this and not the top level project since the code won't recognize that situation and won't know where to place the GUI file.
Notice that since an XML GUI file is created in the background, refactoring after the fact won't work well so this isn't something we should generally fix.

Is there a list of applicationError codes & descriptions for the Google AppEngine ApplicationException?

Hello everyone and thanks up front for your time,
I am working on a java-based GAE web application and now and then I get ApiProxy.ApplicationExceptions.
In the current case they appear randomly and come with the applicationError 108 when I open a write channel to a blob using the (yes I know, still experimental) FileStore API. Although the API is still in an experimental state, I'd like to handle the thrown exception correctly. Thus my question:
Where can I find a list of possible application errors including their descriptions?
As of right now it is not possible for me to figure out where the problem resides since the thrown exception does not contain something like a message, hint or reason phrase but only the error ID 108:
Caused by: com.google.apphosting.api.ApiProxy$ApplicationException: ApplicationError: 108:
at java.lang.Thread.getStackTrace(Thread.java:1495)
at com.google.apphosting.runtime.ApiProxyImpl.doSyncCall(ApiProxyImpl.java:240)
at com.google.apphosting.runtime.ApiProxyImpl.access$000(ApiProxyImpl.java:66)
at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java:183)
at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java:180)
at java.security.AccessController.doPrivileged(Native Method)
at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:180)
at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:66)
at com.googlecode.objectify.cache.TriggerFutureHook.makeSyncCall(TriggerFutureHook.java:154)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:107)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:56)
at com.google.appengine.api.files.FileServiceImpl.makeSyncCall(FileServiceImpl.java:584)
... 65 more
Also, the corresponding javadoc is quite conservative with giving information: https://developers.google.com/appengine/docs/java/javadoc/com/google/apphosting/api/ApiProxy.ApplicationException
Currently I bluntly cancel these requests with a 500, but since I am not sure what has happened I should probably do something else/more.
Thanksalot!
the best information I could get is from the Python source code :
http://code.google.com/p/googleappengine/source/browse/trunk/python/google/appengine/api/files/file_service_pb.py

Tomcat cluster fails and generates tons of logs

Periodically, I'm getting problems with my Tomcat 6 cluster (2 nodes). One of the nodes would just go haywire and generate a ton of logs repeating the following:
Aug 25, 2009 11:44:10 AM org.apache.catalina.ha.session.DeltaRequest reset
SEVERE: Unable to remove element
java.util.NoSuchElementException
at java.util.LinkedList.remove(LinkedList.java:788)
at java.util.LinkedList.removeFirst(LinkedList.java:134)
at org.apache.catalina.ha.session.DeltaRequest.reset(DeltaRequest.java:201)
at org.apache.catalina.ha.session.DeltaRequest.execute(DeltaRequest.java:195)
at org.apache.catalina.ha.session.DeltaManager.handleSESSION_DELTA(DeltaManager.java:1364)
at org.apache.catalina.ha.session.DeltaManager.messageReceived(DeltaManager.java:1320)
at org.apache.catalina.ha.session.DeltaManager.messageDataReceived(DeltaManager.java:1083)
at org.apache.catalina.ha.session.ClusterSessionListener.messageReceived(ClusterSessionListener.java:87)
at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster.java:916)
at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster.java:897)
at org.apache.catalina.tribes.group.GroupChannel.messageReceived(GroupChannel.java:264)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79)
at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageReceived(TcpFailureDetector.java:110)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79)
at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelCoordinator.java:241)
at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(ReceiverBase.java:225)
at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(NioReplicationTask.java:188)
at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:91)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
That's the only thing that it shows. The other node in the cluster is still active at this time. There's nothing to do but to restart. The large amount of logs has caused disk space issues more than a couple of times too.
Does anybody have any idea what's wrong here?
Thanks!
Wong
Appears to be a bug in Tomcat 6. If you look at the source at:
http://www.java2s.com/Open-Source/Java-Document/Sevlet-Container/apache-tomcat-6.0.14/org/apache/catalina/ha/session/DeltaRequest.java.htm (line 225)
you'll see that the reset() method can potentially throw this exception. I suggest that you contact the Tomcat developers regarding this issue.

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