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• Multi-threaded .NET application blocks during file I/O when protected by Themida

  - by Erik Jensen

  As the title says I have a .NET application that is the GUI which uses multiple threads to perform separate file I/O and notice that the threads occasionally block when the application is protected by Themida. One thread is devoted to reading from serial COM port and another thread is devoted to copying files. What I experience is occasionally when the file copy thread encounters a network delay, it will block the other thread that is reading from the serial port. In addition to slow network (which can be transient), I can cause the problem to happen more frequently by making a PathFileExists call to a bad path e.g. PathFileExists("\\\\BadPath\\file.txt"); The COM port reading function will block during the call to ReadFile. This only happens when the application is protected by Themida. I have tried under WinXP, Win7, and Server 2012. In a streamlined test project, if I replace the .NET application with a MFC unmanaged application and still utilize the same threads I see no issue even when protected with Themida. I have contacted Oreans support and here is their response: The way that a .NET application is protected is very different from a native application. To protect a .NET application, we need to hook most of the file access APIs in order to "cheat" the .NET Framework that the application is protected. I guess that those special hooks (on CreateFile, ReadFile...) are delaying a bit the execution in your application and the problem appears. We did a test making those hooks as light as possible (with minimum code on them) but the problem still appeared in your application. The rest of software protectors that we tried (like Enigma, Molebox...) also use a similar hooking approach as it's the only way to make the .NET packed file to work. If those hooks are not present, the .NET Framework will abort execution as it will see that the original file was tampered (due to all Microsoft checks on .NET files) Those hooks are not present in a native application, that's why it should be working fine on your native application. Oreans support tried other software protectors such as Enigma Protector, Engima VirtualBox, and Molebox and all exhibit the exact same problem. What I have found as a work around is to separate out the file copy logic (where the file exists call is being made) to be performed in a completely separate process. I have experimented with converting the thread functions from unmanaged C++ to VB.NET equivalents (PathFileExists - System.IO.File.Exists and CreateFile/ReadFile - System.IO.Ports.SerialPort.Open/Read) and still see the same serial port read blocked when the file check or copy call is delayed. I have also tried setting the ReadFile to work asynchronously but that had no effect. I believe I am dealing with some low-level windows layer that no matter the language it exhibits a block on a shared resource -- and only when the application is executing under a single .NET process protected by Themida which evidently installs some hooks to allow .NET execution. At this time converting the entire application away from .NET is not an option. Nor is separating out the file copy logic to a separate task. I am wondering if anyone else has more knowledge of how a file operation can block another thread reading from a system port. I have included here example applications that show the problem: https://db.tt/cNMYfEIg - VB.NET https://db.tt/Y2lnTqw7 - MFC They are Visual Studio 2010 solutions. When running the themida protected exe, you can see when the FileThread counter pauses (executing the File.Exists call) while the ReadThread counter also pauses. When running non-protected visual studio output exe, the ReadThread counter does not pause which is how we expect it to function. Thanks!

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• Looking for best practise for writing a serial device communication app

  - by cdotlister

  I am pretty new to serial comms, but would like advise on how to best achieve a robust application which speak to and listens to a serial device. I have managed to make use of System.IO.SerialPort, and successfully connected to, sent data to and recieved from my device. The way things work is this. My application connects to the Com Port and opens the port.... I then connect my device to the com port, and it detects a connection to the PC, so sends a bit of text. it's really just copyright info, as well as the version of the firmware. I don't do anything with that, except display it in my 'activity' window. The device then waits. I can then query information, but sending a command such as 'QUERY PARAMETER1'. It then replies with something like: 'QUERY PARAMETER1\r\n\r\n76767\r\n\r\n' I then process that. I can then update it by sending 'SET PARAMETER1 12345', and it will reply with 'QUERY PARAMETER1\r\n\r\n12345\r\n\r\n'. All pretty basic. So, what I have done is created a Communication Class. this call is called in it's own thread, and sends data back to the main form... and also allows me to send messages to it. Sending data is easy. Recieving is a bit more tricky. I have employed the use of the datarecieved event, and when ever data comes in, I echo that to my screen. My problem is this: When I send a command, I feel I am being very dodgy in my handling. What I am doing is, lets say I am sending 'QUERY PARAMETER1'. I send the command to the device, I then put 'PARAMETER1' into a global variable, and I do a Thread.Sleep(100). On the data received, I then have a bit of logic that checks the incoming data, and sees if the string CONTAINS the value in the global variable. As the reply may be 'QUERY PARAMETER1\r\n\r\n76767\r\n\r\n', it sees that it contains my parameter, parses the string, and returns the value I am looking for, but placing it into another global variable. My sending method was sleeping for 100ms. It then wakes, and checks the returned global variable. If it has data... then I'm happy, and I process the data. Problem is... if the sleep is too short.. it will fail. And I feel it's flaky.. putting stuff into variables.. then waiting... The other option is to use ReadLine instead, but that's very blocking. So I remove the data received method, and instead... just send the data... then call ReadLine(). That may give me better results. There's no time, except when we connect initially, that data comes from the device, without me requesting it. So, maybe ReadLine will be simpler and safer? Is this known as 'Blocking' reads? Also, can I set a timeout? Hopefully someone can guide me.

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• Can't seem to redirect from a ViewScoped constructor.

  - by Andrew

  I'm having trouble redirecting from a view scoped bean in the case that we don't have the required info for the page in question. The log entry in the @PostContruct is visible in the log right before a NPE relating to the view trying to render itself instead of following my redirect. Why is it ignoring the redirect? Here's my code: @ManagedBean public class WelcomeView { private String sParam; private String aParam; public WelcomeView() { super(); sParam = getURL_Param("surveyName"); aParam = getURL_Param("accountName"); project = fetchProject(sParam, aParam); } @PostConstruct public void redirectWithoutProject() { if (null == project) { try { logger.warn("NO project [" + sParam + "] for account [" + aParam + "]"); FacesContext fc = FacesContext.getCurrentInstance(); fc.getExternalContext().redirect("/errors/noSurvey.jsf"); return; } catch (Exception e) { e.printStackTrace(); } } } .... public boolean getAuthenticated() { if (project.getPasswordProtected()) { return enteredPassword.equals(project.getLoginPassword()); } else return true; } } Here's the stack trace: SEVERE: Error Rendering View[/participant/welcome.xhtml] javax.el.ELException: /templates/participant/welcome.xhtml @80,70 rendered="#{welcomeView.authenticated}": Error reading 'authenticated' on type com.MYCODE.general.controllers.participant.WelcomeView at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:107) at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:190) at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:416) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1607) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1616) at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:848) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1613) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1616) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1616) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:380) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:126) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:127) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:313) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.MYCODE.general.filters.StatsFilter.doFilter(StatsFilter.java:28) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568) at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:421) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:637) Caused by: java.lang.NullPointerException at com.MYCODE.general.controllers.participant.WelcomeView$$M$863c205f.getAuthenticated(WelcomeView.java:127) at com.MYCODE.general.controllers.participant.WelcomeView$$A$863c205f.getAuthenticated(<generated>) at com.MYCODE.general.controllers.participant.WelcomeView.getAuthenticated(WelcomeView.java:125) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at javax.el.BeanELResolver.getValue(BeanELResolver.java:62) at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53) at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72) at org.apache.el.parser.AstValue.getValue(AstValue.java:118) at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:102) ... 33 more

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• UI not updated while using ProgressMonitorInputStream in Swing to monitor compressed file decompress

  - by Bozhidar Batsov

  I'm working on swing application that relies on an embedded H2 database. Because I don't want to bundle the database with the app(the db is frequently updated and I want new users of the app to start with a recent copy), I've implemented a solution which downloads a compressed copy of the db the first time the application is started and extracts it. Since the extraction process might be slow I've added a ProgressMonitorInputStream to show to progress of the extraction process - unfortunately when the extraction starts, the progress dialog shows up but it's not updated at all. It seems like to events are getting through to the event dispatch thread. Here is the method: public static String extractDbFromArchive(String pathToArchive) { if (SwingUtilities.isEventDispatchThread()) { System.out.println("Invoking on event dispatch thread"); } // Get the current path, where the database will be extracted String currentPath = System.getProperty("user.home") + File.separator + ".spellbook" + File.separator; LOGGER.info("Current path: " + currentPath); try { //Open the archive FileInputStream archiveFileStream = new FileInputStream(pathToArchive); // Read two bytes from the stream before it used by CBZip2InputStream for (int i = 0; i < 2; i++) { archiveFileStream.read(); } // Open the gzip file and open the output file CBZip2InputStream bz2 = new CBZip2InputStream(new ProgressMonitorInputStream( null, "Decompressing " + pathToArchive, archiveFileStream)); FileOutputStream out = new FileOutputStream(ARCHIVED_DB_NAME); LOGGER.info("Decompressing the tar file..."); // Transfer bytes from the compressed file to the output file byte[] buffer = new byte[1024]; int len; while ((len = bz2.read(buffer)) > 0) { out.write(buffer, 0, len); } // Close the file and stream bz2.close(); out.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException ex) { ex.printStackTrace(); } try { TarInputStream tarInputStream = null; TarEntry tarEntry; tarInputStream = new TarInputStream(new ProgressMonitorInputStream( null, "Extracting " + ARCHIVED_DB_NAME, new FileInputStream(ARCHIVED_DB_NAME))); tarEntry = tarInputStream.getNextEntry(); byte[] buf1 = new byte[1024]; LOGGER.info("Extracting tar file"); while (tarEntry != null) { //For each entry to be extracted String entryName = currentPath + tarEntry.getName(); entryName = entryName.replace('/', File.separatorChar); entryName = entryName.replace('\\', File.separatorChar); LOGGER.info("Extracting entry: " + entryName); FileOutputStream fileOutputStream; File newFile = new File(entryName); if (tarEntry.isDirectory()) { if (!newFile.mkdirs()) { break; } tarEntry = tarInputStream.getNextEntry(); continue; } fileOutputStream = new FileOutputStream(entryName); int n; while ((n = tarInputStream.read(buf1, 0, 1024)) > -1) { fileOutputStream.write(buf1, 0, n); } fileOutputStream.close(); tarEntry = tarInputStream.getNextEntry(); } tarInputStream.close(); } catch (Exception e) { } currentPath += "db" + File.separator + DB_FILE_NAME; if (!currentPath.isEmpty()) { LOGGER.info("DB placed in : " + currentPath); } return currentPath; } This method gets invoked on the event dispatch thread (SwingUtilities.isEventDispatchThread() returns true) so the UI components should be updated. I haven't implemented this as an SwingWorker since I need to wait for the extraction anyways before I can proceed with the initialization of the program. This method get invoked before the main JFrame of the application is visible. I don't won't a solution based on SwingWorker + property changed listeners - I think that the ProgressMonitorInputStream is exactly what I need, but I guess I'm not doing something right. I'm using Sun JDK 1.6.18. Any help would be greatly appreciated.

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• WPF BackgroundWorker Execution

  - by Sanju

  Hi All, I've been programming C# for a while now (I'm a Computer Science major), and have never had to implement threading. I am currently building an application for a client that requires threading for a series of operations. Due to the nature of the client/provider agreement, I cannot release the source I am working with. The code that I have posted is in a general form. Pretty much the basic idea of what I am implementing, excluding the content specific source. The first Snippet demonstrates my basic structure, The Progress class is a custom progress window that is displayed as a dialog to prevent user UI interaction. I am currently using the code to complete database calls based on a collection of objects in another area of the application code. For example, I have a collection of "Objects" of one of my custom classes, that I perform these database calls on or on behalf of. My current set up works just fine when I call the "GeneralizedFunction" one and only one time. What I need to do is call this function once for every object in the collection. I was attempting to use a foreach loop to iterate through the collection, then I tried a for loop. For both loops, the result was the same. The Async operation performs exactly as desired for the first item in the collection. This, however, is the only one it works for. For each subsequent item, the progress box (my custom window) displays and immediately closes. In terms of the database calls, the calls for the first item in the collection are the only ones that successfully complete. All others aren't attempted. I've tried everything that I know and don't know to do, but I just cannot seem to get it to work. How can I get this to work for my entire collection? Any and all help is very greatly appreciated. Progress progress; BackgroundWorker worker; // Cancel the current process private void CancelProcess(object sender, EventArgs e) { worker.CancelAsync(); } // The main process ... "Generalized" private void GeneralizedFunction() { progress = new Progress(); progress.Cancel += CancelProcess; progress.Owner = this; Dispatcher pDispatcher = progress.Dispatcher; worker = new BackgroundWorker(); worker.WorkerSupportsCancellation = true; object[] workArgs = { arg1, arg2, arg3}; worker.DoWork += delegate(object s, DoWorkEventArgs args) { /* All main logic here */ foreach(Class ClassObject in ClassObjectCollection) { //Some more logic here UpdateProgressDelegate update = new UpdateProgressDelegate(updateProgress); pDispatcher.BeginInvoke(update, arg1,arg2,arg3); Thread.Sleep(1000); } }; worker.RunWorkerCompleted += delegate(object s, RunWorkerCompletedEventArgs args) { progress.Close(); }; worker.RunWorkerAsync(workArgs); progress.ShowDialog(); } public delegate void UpdateProgressDelegate(arg1,arg2,arg3); private void updateProgress(arg1,arg2,arg3) { //Update progress }

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• Why is the dropdown menu aligned to the left?

  - by fmz

  I am working on a dropdown navigation for a site and am having some trouble with the dropdown portion aligning with the parent category - it shifts all the way to the left. Here is the html: <ul class="dropdown"> <li><a href="#" id="home">Home</a></li> <li><a href="#" id="about">About Us</a> <ul class="sub-menu"> <li><a href="#">Our History</a></li> <li><a href="#">Our Process</a></li> <li><a href="#">Portfolio</a></li> <li><a href="#">Financing</a></li> <li><a href="#">Testimonials</a></li> <li><a href="#">Subcontractors</a></li> </ul> </li> <li><a href="#" id="personal">Personal Banking</a></li> <li><a href="#" id="commercial">Commercial Banking</a></li> <li><a href="#" id="service">Customer Service</a> <ul class="sub-menu"> <li><a href="#">Our History</a></li> <li><a href="#">Our Process</a></li> <li><a href="#">Portfolio</a></li> <li><a href="#">Financing</a></li> <li><a href="#">Testimonials</a></li> <li><a href="#">Subcontractors</a></li> </ul> </li> <li><a href="#" id="investors">Investor Relations</a></li> <li><a href="#" id="contact">Contact Us</a></li> </ul> Here is the CSS: ul.dropdown { position: relative; background: #4e8997; height: 40px; padding-left: 5px; } ul.dropdown li { float: left; zoom: 1; } ul.dropdown li a { display: block; margin-top: 5px; padding: .5em .6em; color: #fff; font: bold 14px "Helvetica Neue", Arial, Helvetica, Geneva, sans-serif; text-transform: uppercase; border: none; } ul.dropdown a:hover { background-color: #c29c5d; color: #fff; } ul.dropdown a:active { background-color: #c29c5d; color: #fff; } /* LEVEL TWO */ ul.dropdown ul { width: 200px; visibility: hidden; position: absolute; top:100%; left: 0; } ul.dropdown ul li { font: 13px "Helvetica Neue", Arial, Helvetica, Geneva, sans-serif; border-bottom: 1px solid #ccc; float: none; color: #fff; background-color: #c29c5d; height: 20px; } ul.dropdown ul li a { display: inline-block; } ul.dropdown ul li a:hover { background-color: #a2834d; color: #fff; height: 20px; } I tried changing the ul.dropdown ul to position relative, but that breaks the navigation. I would appreciate some help getting this corrected. Thanks.

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• bidirectional OneToOne Mapping : From Entity to subclass and from superclass to Entity?

  - by Teocali

  I'm trying to establish a tricky bidirectional OneToOne mapping in hibernate. I got the following classes : @Entity @Inheritance(strategy = InheritanceType.JOINED) public class Parent { @OneToOne private AnotherEntity anotherEntity; } @Entity public class Child1 extends Parent{} @Entity public class Child2 extends Parent{} @Entity public class AnotherEntity { @OneToOne(mappedBy = "anotherEntity") private Child1 child1; @OneToOne(mappedBy = "anotherEntity") private Child1 child2; } The problem here is when I'm launching the application : I got the following message : org.hibernate.MappingException: property [anotherEntity] not found on entity [Child1] at org.hibernate.mapping.PersistentClass.getRecursiveProperty(PersistentClass.java:429) at org.hibernate.mapping.PersistentClass.getReferencedProperty(PersistentClass.java:369) at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1614) at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1362) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1727) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1778) at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:189) at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:350) at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:335) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133) at javax.servlet.GenericServlet.init(GenericServlet.java:160) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5015) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5302) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:962) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:536) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1471) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1436) at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:673) at org.apache.catalina.manager.ManagerServlet.doPut(ManagerServlet.java:431) at javax.servlet.http.HttpServlet.service(HttpServlet.java:644) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) One obvious solution would be to move the anotherEntity field to Child1 and Child2, but it would mean lose the link from Parent to AnotherEntity. Any help welcome.

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• Appropriate programming design questions.

  - by Edward

  I have a few questions on good programming design. I'm going to first describe the project I'm building so you are better equipped to help me out. I am coding a Remote Assistance Tool similar to TeamViewer, Microsoft Remote Desktop, CrossLoop. It will incorporate concepts like UDP networking (using Lidgren networking library), NAT traversal (since many computers are invisible behind routers nowadays), Mirror Drivers (using DFMirage's Mirror Driver (http://www.demoforge.com/dfmirage.htm) for realtime screen grabbing on the remote computer). That being said, this program has a concept of being a client-server architecture, but I made only one program with both the functionality of client and server. That way, when the user runs my program, they can switch between giving assistance and receiving assistance without having to download a separate client or server module. I have a Windows Form that allows the user to choose between giving assistance and receiving assistance. I have another Windows Form for a file explorer module. I have another Windows Form for a chat module. I have another Windows Form form for a registry editor module. I have another Windows Form for the live control module. So I've got a Form for each module, which raises the first question: 1. Should I process module-specific commands inside the code of the respective Windows Form? Meaning, let's say I get a command with some data that enumerates the remote user's files for a specific directory. Obviously, I would have to update this on the File Explorer Windows Form and add the entries to the ListView. Should I be processing this code inside the Windows Form though? Or should I be handling this in another class (although I have to eventually pass the data to the Form to draw, of course). Or is it like a hybrid in which I process most of the data in another class and pass the final result to the Form to draw? So I've got like 5-6 forms, one for each module. The user starts up my program, enters the remote machine's ID (not IP, ID, because we are registering with an intermediary server to enable NAT traversal), their password, and connects. Now let's suppose the connection is successful. Then the user is presented with a form with all the different modules. So he can open up a File Explorer, or he can mess with the Registry Editor, or he can choose to Chat with his buddy. So now the program is sort of idle, just waiting for the user to do something. If the user opens up Live Control, then the program will be spending most of it's time receiving packets from the remote machine and drawing them to the form to provide a 'live' view. 2. Second design question. A spin off question #1. How would I pass module-specific commands to their respective Windows Forms? What I mean is, I have a class like "NetworkHandler.cs" that checks for messages from the remote machine. NetworkHandler.cs is a static class globally accessible. So let's say I get a command that enumerates the remote user's files for a specific directory. How would I "give" that command to the File Explorer Form. I was thinking of making an OnCommandReceivedEvent inside NetworkHandler, and having each form register to that event. When the NetworkHandler received a command, it would raise the event, all forms would check it to see if it was relevant, and the appropriate form would take action. Is this an appropriate/the best solution available? 3. The networking library I'm using, Lidgren, provides two options for checking networking messages. One can either poll ReadMessage() to return null or a message, or one can use an AutoResetEvent OnMessageReceived (I'm guessing this is like an event). Which one is more appropriate?

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• Only root object on request is deserialized when using Message.GetBody<>

  - by user324627

  I am attempting to create a wcf service that accepts any input (Action="*") and then deserialize the message after determining its type. For the purposes of testing deserialization I am currently hard-coding the type for the test service. I get no errors from the deserialization process, but only the outer object is populated after deserialization occurs. All inner fields are null. I can process the same request against the original wcf service successfully. I am deserializing this way, where knownTypes is a type list of expected types: DataContractSerializer ser = new DataContractSerializer(new createEligibilityRuleSet ().GetType(), knownTypes); createEligibilityRuleSet newReq = buf.CreateMessage().GetBody<createEligibilityRuleSet>(ser); Here is the class and sub-classes of the request object. These classes are generated by svcutil using a top down approach from an existing wsdl. I have tried replacing the XmlTypeAttributes with DataContracts and the XmlElements with DataMembers with no difference. It is the instance of CreateEligibilityRuleSetSvcRequest on the createEligibilityRuleSet object that is null. I have included the request retrieved from the request at the bottom /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("svcutil", "3.0.4506.2152")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://RulesEngineServicesLibrary/RulesEngineServices")] public partial class createEligibilityRuleSet { private CreateEligibilityRuleSetSvcRequest requestField; /// <remarks/> [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified, IsNullable = true, Order = 0)] public CreateEligibilityRuleSetSvcRequest request { get { return this.requestField; } set { this.requestField = value; } } } /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("svcutil", "3.0.4506.2152")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://RulesEngineServicesLibrary")] public partial class CreateEligibilityRuleSetSvcRequest : RulesEngineServicesSvcRequest { private string requestField; /// <remarks/> [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified, Order = 0)] public string request { get { return this.requestField; } set { this.requestField = value; } } } [System.Xml.Serialization.XmlIncludeAttribute(typeof(CreateEligibilityRuleSetSvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(ApplyMemberEligibilitySvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(CreateCompletionCriteriaRuleSetSvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(CopyRuleSetSvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(DeleteRuleSetByIDSvcRequest))] [System.CodeDom.Compiler.GeneratedCodeAttribute("svcutil", "3.0.4506.2152")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://RulesEngineServicesLibrary")] public partial class RulesEngineServicesSvcRequest : ServiceRequest { } /// <remarks/> [System.Xml.Serialization.XmlIncludeAttribute(typeof(RulesEngineServicesSvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(CreateEligibilityRuleSetSvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(ApplyMemberEligibilitySvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(CreateCompletionCriteriaRuleSetSvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(CopyRuleSetSvcRequest))] [System.Xml.Serialization.XmlIncludeAttribute(typeof(DeleteRuleSetByIDSvcRequest))] [System.CodeDom.Compiler.GeneratedCodeAttribute("svcutil", "3.0.4506.2152")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://FELibrary")] public partial class ServiceRequest { private string applicationIdField; /// <remarks/> [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified, Order = 0)] public string applicationId { get { return this.applicationIdField; } set { this.applicationIdField = value; } } } Request from client comes on Message body as below. Retrieved from Message at runtime. <soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:rul="http://RulesEngineServicesLibrary/RulesEngineServices"> <soap:Header/> <soap:Body> <rul:createEligibilityRuleSet> <request> <applicationId>test</applicationId> <request>Perf Rule Set1</request> </request> </rul:createEligibilityRuleSet> </soap:Body> </soap:Envelope>

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• [C#][Design] Appropriate programming design questions.

  - by Edward

  I have a few questions on good programming design. I'm going to first describe the project I'm building so you are better equipped to help me out. I am coding a Remote Assistance Tool similar to TeamViewer, Microsoft Remote Desktop, CrossLoop. It will incorporate concepts like UDP networking (using Lidgren networking library), NAT traversal (since many computers are invisible behind routers nowadays), Mirror Drivers (using DFMirage's Mirror Driver (http://www.demoforge.com/dfmirage.htm) for realtime screen grabbing on the remote computer). That being said, this program has a concept of being a client-server architecture, but I made only one program with both the functionality of client and server. That way, when the user runs my program, they can switch between giving assistance and receiving assistance without having to download a separate client or server module. I have a Windows Form that allows the user to choose between giving assistance and receiving assistance. I have another Windows Form for a file explorer module. I have another Windows Form for a chat module. I have another Windows Form form for a registry editor module. I have another Windows Form for the live control module. So I've got a Form for each module, which raises the first question: 1. Should I process module-specific commands inside the code of the respective Windows Form? Meaning, let's say I get a command with some data that enumerates the remote user's files for a specific directory. Obviously, I would have to update this on the File Explorer Windows Form and add the entries to the ListView. Should I be processing this code inside the Windows Form though? Or should I be handling this in another class (although I have to eventually pass the data to the Form to draw, of course). Or is it like a hybrid in which I process most of the data in another class and pass the final result to the Form to draw? So I've got like 5-6 forms, one for each module. The user starts up my program, enters the remote machine's ID (not IP, ID, because we are registering with an intermediary server to enable NAT traversal), their password, and connects. Now let's suppose the connection is successful. Then the user is presented with a form with all the different modules. So he can open up a File Explorer, or he can mess with the Registry Editor, or he can choose to Chat with his buddy. So now the program is sort of idle, just waiting for the user to do something. If the user opens up Live Control, then the program will be spending most of it's time receiving packets from the remote machine and drawing them to the form to provide a 'live' view. 2. Second design question. A spin off question #1. How would I pass module-specific commands to their respective Windows Forms? What I mean is, I have a class like "NetworkHandler.cs" that checks for messages from the remote machine. NetworkHandler.cs is a static class globally accessible. So let's say I get a command that enumerates the remote user's files for a specific directory. How would I "give" that command to the File Explorer Form. I was thinking of making an OnCommandReceivedEvent inside NetworkHandler, and having each form register to that event. When the NetworkHandler received a command, it would raise the event, all forms would check it to see if it was relevant, and the appropriate form would take action. Is this an appropriate/the best solution available? 3. The networking library I'm using, Lidgren, provides two options for checking networking messages. One can either poll ReadMessage() to return null or a message, or one can use an AutoResetEvent OnMessageReceived (I'm guessing this is like an event). Which one is more appropriate?

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• NullPointerException in generated JSP code calling setJspId()

  - by Dobbo

  I am trying to deploy the Duke's Bank example form the J2EE 5 tutorial on JBoss 7.1.1. I have only used (unaltered) the source, and the standard XML configuration files for deployment, part of the exercise here is to see how I might structure a JSP based project of my own. The exception I get is as follows: ERROR [[jsp]] Servlet.service() for servlet jsp threw exception: java.lang.NullPointerException at javax.faces.webapp.UIComponentClassicTagBase.setJspId(UIComponentClassicTagBase.java:1858) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final] at org.apache.jsp.main_jsp._jspx_meth_f_005fview_005f0(main_jsp.java:99) at org.apache.jsp.main_jsp._jspService(main_jsp.java:76) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) [jbossweb-7.0.13.Final.jar:] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) [jbossweb-7.0.13.Final.jar:] at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:326) [jbossweb-7.0.13.Final.jar:] at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:253) [jbossweb-7.0.13.Final.jar:] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:397) [jbossweb-7.0.13.Final.jar:] at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final] at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:] at java.lang.Thread.run(Thread.java:636) [rt.jar:1.6.0_18] I have not given any JBoss configuration files, the WAR's WEB-INF part looks like this: $ jar tvf build/lib/dukebank-web.war 0 Sat Dec 15 22:00:12 GMT 2012 META-INF/ 123 Sat Dec 15 22:00:10 GMT 2012 META-INF/MANIFEST.MF 0 Sat Dec 15 22:00:12 GMT 2012 WEB-INF/ 2514 Fri Dec 14 14:29:20 GMT 2012 WEB-INF/web.xml 1348 Sat Dec 15 08:19:46 GMT 2012 WEB-INF/dukesBank.tld 7245 Sat Dec 15 08:19:46 GMT 2012 WEB-INF/faces-config.xml 2153 Sat Dec 15 08:19:46 GMT 2012 WEB-INF/tutorial-template.tld 0 Sat Dec 15 22:00:12 GMT 2012 WEB-INF/classes/... The JSP file (main.jsp) that causes this problem is: <f:view> <h:form> <jsp:include page="/template/template.jsp"/> <center> <h3><h:outputText value="#{bundle.Welcome}"/></h3> </center> </h:form> </f:view> The template file it includes: <%@ taglib uri="/WEB-INF/tutorial-template.tld" prefix="tt" %> <%@ page errorPage="/template/errorpage.jsp" %> <%@ include file="/template/screendefinitions.jspf" %> <html> <head> <title> <tt:insert definition="bank" parameter="title"/> </title> <link rel="stylesheet" type="text/css" href="stylesheet.css"> </head> <body bgcolor="#ffffff"> <tt:insert definition="bank" parameter="banner"/> <tt:insert definition="bank" parameter="links"/> </body> </html> I will refrain from coping any more files because, as I said at the start I haven't altered any of the files I have used. Many thanks for your help, Steve

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• Looking for best practise for writing a serial device communication app in C#

  - by cdotlister

  I am pretty new to serial comms, but would like advise on how to best achieve a robust application which speak to and listens to a serial device. I have managed to make use of System.IO.serialport, and successfully connected to, sent data to and recieved from my device. The way things work is this. My application connects to the Com Port and opens the port.... I then connect my device to the com port, and it detects a connectio to the PC, so sends a bit of text. it's really just copyright info, as well as the version of the firmware. I don't do anything with that, except display it in my 'activity' window. The device then waits. I can then query information, but sending a command such as 'QUERY PARAMETER1'. It then replies with something like: 'QUERY PARAMETER1\r\n\r\n76767\r\n\r\n' I then process that. I can then update it by sending 'SET PARAMETER1 12345', and it will reply with 'QUERY PARAMETER1\r\n\r\n12345\r\n\r\n'. All pretty basic. So, what I have done is created a Communication Class. this call is called in it's own thread, and sends data back to the main form... and also allows me to send messages to it. Sending data is easy. Recieving is a bit more tricky. I have employed the use of the datarecieved event, and when ever data comes in, I echo that to my screen. My problem is this: When I send a command, I feel I am being very dodgy in my handling. What I am doing is, lets say I am sending 'QUERY PARAMETER1'. I send the command to the device, I then put 'PARAMETER1' into a global variable, and I do a Thread.Sleep(100). On the data recieved, I then have a bit of logic that checks the incoming data, and sees if the string CONTAINS the value in the gloabl variable. As the reply may be 'QUERY PARAMETER1\r\n\r\n76767\r\n\r\n', it sees that it contains my parameter, parses the string, and returns the value I am looking for, but placing it into another global variable. My sending method was sleeping for 100ms. It then wakes, and checks the returned global variable. If it has data... then I'm happy, and I process the data. Problem is... if the sleep is too short.. it will fail. And I feel it's flakey.. putting stuff into variables.. then waiting... The other option is to use ReadLine instead, but that's very blocking. So I remove the datarecieved method, and instead... just send the data... then call ReadLine(). That may give me better results. There's no time, except when we connect initially, that data comes from the device, without me requesting it. So, maybe readline will be simpler and safer? Is this known as 'Blocking' reads? Also, can I set a timeout? Hopefully someone can guide me.

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• python socket related question.

  - by paul

  Hello,All im totally new to socket programming in python. i was read some tutorial and manual, but i didn't found what i want to make python related socket script in manual or tutorial. i want to make socket script which can send some info to server and also receive some info from server. For example, i want to send my login information to server, and want to receive result reply from server. but i have no idea..how to send my login information(id and password) to server. i was captured with wireshark, some process to send login info to server. and i was found port number is 5300 and server ip is 58.225.56.152 and i was send id is 'aaaaaaa' and password 'bbbbbbb' and i was received 'USER NOT FOUND' result from server. how can i make this kind of process with python socket ? if anyone help me some reference or some example or anything help much appreciate! 0000 00 50 56 f2 c8 cc 00 0c 29 a8 f8 c0 08 00 45 00 .PV.....).....E. 0010 00 e2 2a 19 40 00 80 06 d0 55 c0 a8 cb 85 3a e1 ..*[email protected]....:. 0020 38 98 05 f3 15 9a b9 86 62 7b 0d ab 0f ba 50 18 8.......b{....P. 0030 fa f0 26 14 00 00 50 54 3f 09 a2 91 7f 13 00 00 ..&...PT?....... 0040 00 1f 14 00 02 00 00 00 00 00 00 00 07 00 00 00 ................ 0050 61 61 61 61 61 61 61 50 54 3f 09 a2 91 7f 8b 00 aaaaaaaPT?...... 0060 00 00 1f 15 00 08 00 00 00 07 00 00 00 61 61 61 .............aaa 0070 61 61 61 61 07 00 00 00 62 62 62 62 62 62 62 01 aaaa....bbbbbbb. 0080 00 00 00 31 02 00 00 00 4b 52 0f 00 00 00 31 39 ...1....KR....19 0090 32 2e 31 36 38 2e 32 30 33 2e 31 33 33 30 00 00 2.168.203.1330.. 00a0 00 4d 69 63 72 6f 73 6f 66 74 20 57 69 6e 64 6f .Microsoft Windo 00b0 77 73 20 58 50 20 50 72 6f 66 65 73 73 69 6f 6e ws XP Profession 00c0 61 6c 20 53 65 72 76 69 63 65 20 50 61 63 6b 20 al Service Pack 00d0 32 14 00 00 00 31 30 30 31 33 30 30 35 33 31 35 2....10013005315 00e0 37 38 33 37 32 30 31 32 33 03 00 00 00 34 37 30 783720123....470 0000 00 0c 29 a8 f8 c0 00 50 56 f2 c8 cc 08 00 45 00 ..)....PV.....E. 0010 00 28 ae 37 00 00 80 06 8c f1 3a e1 38 98 c0 a8 .(.7......:.8... 0020 cb 85 15 9a 05 f3 0d ab 0f ba b9 86 63 35 50 10 ............c5P. 0030 fa f0 5f 8e 00 00 00 00 00 00 00 00 .._......... 0000 00 0c 29 a8 f8 c0 00 50 56 f2 c8 cc 08 00 45 00 ..)....PV.....E. 0010 00 4c ae 38 00 00 80 06 8c cc 3a e1 38 98 c0 a8 .L.8......:.8... 0020 cb 85 15 9a 05 f3 0d ab 0f ba b9 86 63 35 50 18 ............c5P. 0030 fa f0 3e 75 00 00 50 54 3f 09 a2 91 7f 16 00 00 ..>u..PT?....... 0040 00 1f 18 00 01 00 00 00 0e 00 00 00 55 73 65 72 ............User 0050 20 4e 6f 74 20 46 6f 75 6e 64 Not Found

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• How to get the selected index of a dropdowlist with javascript

  - by rui martins

  I have a table with several @Html.dropdowlistfor in it. I was trying to read the selected value of using javascript, but all read is the html generated. How can I read it?? for (var i = 0; i < oTable.length; i++) { **userModel.Id = oTable[i][0];** regionModel.Users.push(userModel); processModel.Regions.push(regionModel); userModel = { "Id": "", "Name": ""}; regionModel = { "Id": "", "Name": "", "Users": []}; } TABLE <table class="tbl" id="tbl"> <thead> <tr> <th> Region </th> <th> Owner </th> </tr> </thead> <tbody> @if (Model != null) { foreach (var item in Model.Regions) { <tr> <td> @Html.DisplayTextFor(i => item.Name) </td> <td> @Html.DropDownListFor(i => item.Users, new SelectList(item.Users, "Id", "Name")) </td> </tr> } } </tbody> CODE function ProcessSave() { // Step 1: Read View Data and Create JSON Object var userModel = { "User": "", "Name": ""}; var regionModel = {"Region" : "","Name": "", "Users": []}; var processModel = { "User": "", "Description": "", "Code": "", "Regions": []}; processModel.Name = $("#Name").val(); processModel.Code = $("#Code").val(); processModel.Description = $("#Description").val(); var oTable = $('.tbl').dataTable().fnGetData(); for (var i = 0; i < oTable.length; i++) { regionModel.Name = oTable[i][0]; userModel.User = oTable[i][1]; userModel.Name = oTable[i][1]; regionModel.Users.push(userModel); processModel.Regions.push(regionModel); userModel = { "Id": "", "Name": ""}; regionModel = { "Name": "", "Users": []}; } // Step 1: Ends Here // Set 2: Ajax Post // Here i have used ajax post for saving/updating information $.ajax({ url: '/Process/Create', data: JSON.stringify(processModel), type: 'POST', contentType: 'application/json;', dataType: 'json', success: function (result) { if (result.Success == "1") { window.location.href = "/Process/Index"; } else { alert(result.ex); } } }); } MODELS namespace TestingTool.ViewModels { public partial class ProcessModel { public string Name { get; set; } public string Description { get; set; } public string Code { get; set; } public virtual ICollection<RegionModel> Regions { get; set; } } } namespace TestingTool.ViewModels { public class RegionModel { public int Region { get; set; } public string Name { get; set; } public virtual ICollection<UserModel> Users { get; set; } } } namespace TestingTool.ViewModels { public class UserModel { public int User{ get; set; } public string Name { get; set; } } }

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• "FOR UPDATE" v/s "LOCK IN SHARE MODE" : Allow concurrent threads to read updated "state" value of locked row

  - by shadesco

  I have the following scenario: User X logs in to the application from location lc1: call it Ulc1 User X (has been hacked, or some friend of his knows his login credential, or he just logs in from a different browser on his machine,etc.. u got the point) logs in at the same time from location lc2: call it Ulc2 I am using a main servlet which : - gets a connection from database pooling - sets autocommit to false - executes a command that goes through app layers: if all successful, set autocommit to true in a "finally" statement, and closes connection. Else if an exception happens, rollback(). In my database (mysql/innoDb) i have a "history" table, with row columns: id(primary key) |username | date | topic | locked The column "locked" has by default value "false" and it serves as a flag that marks if a specific row is locked or not. Each row is specific to a user (as u can see from the username column) So back to the scenario: --Ulc1 sends the command to update his history from the db for date "D" and topic "T". --Ulc2 sends the same command to update history from the db for the same date "D" and same topic "T" at the exact same time. I want to implement an mysql/innoDB locking system that will enable whichever thread arriving to do the following check: Is column "locked" for this row true or not? if true, return a message to the user that " he is already updating the same data from another location" if not true (ie not locked) : flag it as locked and update then reset locked to false once finished. Which of these two mysql locking techniques, will actually allow the 2nd arriving thread from reading the "updated" value of the locked column to decide wt action to take?Should i use "FOR UPDATE" or "LOCK IN SHARE MODE"? This scenario explains what i want to accomplish: - Ulc1 thread arrives first: column "locked" is false, set it to true and continue updating process - Ulc2 thread arrives while Ulc1's transaction is still in process, and even though the row is locked through innoDb functionalities, it doesn't have to wait but in fact reads the "new" value of column locked which is "true", and so doesn't in fact have to wait till Ulc1 transaction commits to read the value of the "locked" column(anyway by that time the value of this column will already have been reset to false). I am not very experienced with the 2 types of locking mechanisms, what i understand so far is that LOCK IN SHARE MODE allow other transaction to read the locked row while FOR UPDATE doesn't even allow reading. But does this read gets on the updated value? or the 2nd arriving thread has to wait the first thread to commit to then read the value? Any recommendations about which locking mechanism to use for this scenario is appreciated. Also if there's a better way to "check" if the row has been locked (other than using a true/false column flag) please let me know about it. thank you SOLUTION (Jdbc pseudocode example based on @Darhazer's answer) Table : [ id(primary key) |username | date | topic | locked ] connection.setautocommit(false); //transaction-1 PreparedStatement ps1 = "Select locked from tableName for update where id="key" and locked=false); ps1.executeQuery(); //transaction 2 PreparedStatement ps2 = "Update tableName set locked=true where id="key"; ps2.executeUpdate(); connection.setautocommit(true);// here we allow other transactions threads to see the new value connection.setautocommit(false); //transaction 3 PreparedStatement ps3 = "Update tableName set aField="Sthg" where id="key" And date="D" and topic="T"; ps3.executeUpdate(); // reset locked to false PreparedStatement ps4 = "Update tableName set locked=false where id="key"; ps4.executeUpdate(); //commit connection.setautocommit(true);

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• get text from a certain <tr> tag

  - by WideBlade

  Is there a way to get the text in a dynamic way from a certain <tr> tag in the page? e.g. I've a page with a <tr> with the value "a1". I'd like to get only the text from this <tr> tag, and echo it into the page. is this possible? here is the HTML: <html><tr id='ieconn2' > <td><table width='100%'><tr><td valign='top'><table width='100%'><tr><td><script type="text/javascript"><!-- google_ad_client = "pub-4503439170693445"; /* 300x250, created 7/21/10 */ google_ad_slot = "7608120147"; google_ad_width = 300; google_ad_height = 250; //--> </script> <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script><br>When Marshall and Lily fear they will never get pregnant, they see a specialist who can hopefully help move the process along. Meanwhile, Robin starts her new job.<br><br><b>Source: </b>CBS <br>&nbsp;</td></tr><tr><td><b>There are no foreign summaries for this episode:</b> <a href='/edit/shows/3918/episode_foreign_summary/?eid=1065002553&season=6'>Contribute</a></td></tr><tr><td><b>English Recap Available: </b> <a href='/How_I_Met_Your_Mother/episodes/1065002553?show_recap=1'>View Here</a></td></tr></table></td><td valign='top' width='250'><div align='left'> <img alt='How I Met Your Mother season 6 episode 13' src="http://images.tvrage.com/screencaps/20/3918/1065002553.jpg" width="248" border='0' > </div><div align='center'><a href='/How_I_Met_Your_Mother/episodes/1065002553?gallery=1'>6 gallery images</a></div></td></tr></table></td></tr><tr> <td background='/_layout_v3/buttons/title.jpg' height='39' width='631' align='center'> <table width='100%' cellpadding='0' cellspacing='0' style='margin: 1px 1px 1px 1px;'> <tr> <td align='left' style='cursor: pointer;' onclick="SwitchHeader('ieconn3','iehide3','26')" width='90'>&nbsp;<span style='font-size: 15px; font-weight: bold; color: black; padding-left: 8px;' id='iehide3'><img src='/_layout_v3/misc/minus.gif' width='26'></span></td> <td align='center' style='cursor: pointer;' onclick="SwitchHeader('ieconn3','iehide3','26')" ><h5 class='nospace'>Sponsored Links</h5><a name=''></a></td> <td align='left' width='90' >&nbsp;</td></tr></table></td> </tr></html> All I want to get is this text: "When Marshall and Lily fear they will never get pregnant, they see a specialist who can hopefully help move the process along. Meanwhile, Robin starts her new job. "

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• HMTL5 Anti Aliasing Browser Disable

  - by Tappa Tappa

  I am forced to consider writing a library to handle the fundamental basics of drawing lines, thick lines, circles, squares etc. of an HTML5 canvas because I can't disable a feature embedded in the browser rendering of the core canvas algorithms. Am I forced to build the HTML5 Canvas rendering process from the ground up? If I am, who's in with me to do this? Who wants to change the world? Imagine a simple drawing application written in HTML5... you draw a shape... a closed shape like a rudimentary circle, free hand, more like an onion than a circle (well, that's what mine would look like!)... then imagine selecting a paint bucket icon and clicking inside that shape you drew and expecting it to be filled with a color of your choice. Imagine your surprise as you selected "Paint Bucket" and clicked in the middle of your shape and it filled your shape with color... BUT, not quite... HANG ON... this isn't right!!! On the inside of the edge of the shape you drew is a blur between the background color and your fill color and the edge color... the fill seems to be flawed. You wanted a straight forward "Paint Bucket" / "Fill"... you wanted to draw a shape and then fill it with a color... no fuss.... fill the whole damned inside of your shape with the color you choose. Your web browser has decided that when you draw the lines to define your shape they will be anti-aliased. If you draw a black line for your shape... well, the browser will draw grey pixels along the edges, in places... to make it look like a "better" line. Yeah, a "better" line that **s up the paint / flood fill process. How much does is cost to pay off the browser developers to expose a property to disable their anti-aliasing rendering? Disabling would save milliseconds for their rendering engine, surely! Bah, I really don't want to have to build my own canvas rendering engine using Bresenham line rendering algorithm... WHAT CAN BE DONE... HOW CAN THIS BE CHANGED!!!??? Do I need to start a petition aimed at the WC3???? Will you include your name if you are interested??? UPDATED function DrawLine(objContext, FromX, FromY, ToX, ToY) { var dx = Math.abs(ToX - FromX); var dy = Math.abs(ToY - FromY); var sx = (FromX < ToX) ? 1 : -1; var sy = (FromY < ToY) ? 1 : -1; var err = dx - dy; var CurX, CurY; CurX = FromX; CurY = FromY; while (true) { objContext.fillRect(CurX, CurY, objContext.lineWidth, objContext.lineWidth); if ((CurX == ToX) && (CurY == ToY)) break; var e2 = 2 * err; if (e2 > -dy) { err -= dy; CurX += sx; } if (e2 < dx) { err += dx; CurY += sy; } } }

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• output image is not displayed

  - by gerry chocolatos

  so, im doing an image detection which i have to process on each red, green, n blue element to get the edge map and combine them become one to show the output. but it doesnt show my output image would anyone pls be kind enough to help me? here is my code so far. //get the red element process_red = new int[width * height]; counter = 0; for(int i = 0; i < 256; i++) { for(int j = 0; j < 256; j++) { int clr = buff_red.getRGB(j, i); int red = (clr & 0x00ff0000) >> 16; red = (0xFF<<24)|(red<<16)|(red<<8)|red; process_red[counter] = red; counter++; } } //set threshold value for red element int threshold = 100; for (int x = 0; x < width; x++) { for (int y = 0; y < height; y++) { int bin = (buff_red.getRGB(x, y) & 0x000000ff); if (bin < threshold) bin = 0; else bin = 255; buff_red.setRGB(x,y, 0xff000000 | bin << 16 | bin << 8 | bin); } } and i do the same way for my green n blue elements. and then i wanted to get to combination of the three by doing it this way: //combine the three elements process_combine = new int[width * height]; counter = 0; for(int i = 0; i < 256; i++) { for(int j = 0; j < 256; j++) { int clr_a = buff_red.getRGB(j, i); int ar = clr_a & 0x000000ff; int clr_b = buff_green.getRGB(j, i); int bg = clr_b & 0x000000ff; int clr_c = buff_blue.getRGB(j, i); int cb = clr_b & 0x000000ff; int alpha = 0xff000000; int combine = alpha|(ar<<16)|(bg<<8)|cb; process_combine[counter] = combine; counter++; } } buff_rgb = new BufferedImage(width,height, BufferedImage.TYPE_INT_ARGB); Graphics rgb; rgb = buff_rgb.getGraphics(); rgb.drawImage(output_rgb, 0, 0, null); rgb.dispose(); repaint(); and to show the output whic is from the combining process, i use a draw method: g.drawImage(buff_rgb,800,100,this); but still it doesnt show the image. can anyone pls help me? ur help is really appreciated. thanks.

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• Problems with Asynchronous UDP Sockets

  - by ihatenetworkcoding

  Hi, I'm struggling a bit with socket programming (something I'm not at all familiar with) and I can't find anything which helps from google or MSDN (awful). Apologies for the length of this. Basically I have an existing service which recieves and responds to requests over UDP. I can't change this at all. I also have a client within my webapp which dispatches and listens for responses to that service. The existing client I've been given is a singleton which creates a socket and an array of response slots, and then creates a background thread with an infinite looping method that makes "sock.Receive()" calls and pushes the data received into the slot array. All kinds of things about this seem wrong to me and the infinite thread breaks my unit testing so I'm trying to replace this service with one which makes it's it's send/receives asynchronously instead. Point 1: Is this the right approach? I want a non-blocking, scalable, thread-safe service. My first attempt is roughly like this, which sort of worked but the data I got back was always shorter than expected (i.e. the buffer did not have the number of bytes requested) and seemed to throw exceptions when processed. private Socket MyPreConfiguredSocket; public object Query() { //build a request this.MyPreConfiguredSocket.SendTo(MYREQUEST, packet.Length, SocketFlags.Multicast, this._target); IAsyncResult h = this._sock.BeginReceiveFrom(response, 0, BUFFER_SIZE, SocketFlags.None, ref this._target, new AsyncCallback(ARecieve), this._sock); if (!h.AsyncWaitHandle.WaitOne(TIMEOUT)) { throw new Exception("Timed out"); } //process response data (always shortened) } private void ARecieve (IAsyncResult result) { int bytesreceived = (result as Socket).EndReceiveFrom(result, ref this._target); } My second attempt was based on more google trawling and this recursive pattern I frequently saw, but this version always times out! It never gets to ARecieve. public object Query() { //build a request this.MyPreConfiguredSocket.SendTo(MYREQUEST, packet.Length, SocketFlags.Multicast, this._target); State s = new State(this.MyPreConfiguredSocket); this.MyPreConfiguredSocket.BeginReceiveFrom(s.Buffer, 0, BUFFER_SIZE, SocketFlags.None, ref this._target, new AsyncCallback(ARecieve), s); if (!s.Flag.WaitOne(10000)) { throw new Exception("Timed out"); } //always thrown //process response data } private void ARecieve (IAsyncResult result) { //never gets here! State s = (result as State); int bytesreceived = s.Sock.EndReceiveFrom(result, ref this._target); if (bytesreceived > 0) { s.Received += bytesreceived; this._sock.BeginReceiveFrom(s.Buffer, s.Received, BUFFER_SIZE, SocketFlags.None, ref this._target, new AsyncCallback(ARecieve), s); } else { s.Flag.Set(); } } private class State { public State(Socket sock) { this._sock = sock; this._buffer = new byte[BUFFER_SIZE]; this._buffer.Initialize(); } public Socket Sock; public byte[] Buffer; public ManualResetEvent Flag = new ManualResetEvent(false); public int Received = 0; } Point 2: So clearly I'm getting something quite wrong. Point 3: I'm not sure if I'm going about this right. How does the data coming from the remote service even get to the right listening thread? Do I need to create a socket per request? Out of my comfort zone here. Need help.

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• Formatting a truecrypt volume on windows: Truecrypt failed to obtain administrator privileges

  - by daveh551

  Following shaneselman's advice (http://www.hanselman.com/blog/TheComputerBackupRuleOfThree.aspx), I'm setting up a 2TB external drive as a backup, and encrypting it using TrueCrypt. This is under Windows 7. (I've used TrueCrypt before, but not since XP days.) I installed TrueCrypt with default options. After taking 23 hours to format the 2TB container, it finishes with an error saying "TrueCrypt cannot obtain administrator privileges." When I click OK on that, it says it can't format the container as NTFS, do I want to format it as FAT, and I don't so I click No, and it exits with nothing to show for 23 hours of compute time. So I set the "Run as administrator flag" on the TrueCrypt shortcut, and try again. This time, when I go to format the contain (prepared to wait ANOTHER 23 hours), it pops up a dialog saying you're formatting this as administrator. "The volume may be created with permissions that will not allow you to write to the volume when it is mounted. If you want to avoid that, close this instance of Volume Creation Wizard and launch a new one without administrator privileges." Great - I can either run as non-administrator, and it will fail to create the volume at all, or I can run as administrator and create a volume I can't write to. I think I'm doing something wrong, but it's not clear to me what. Any help?

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• "Error in the Site Data Web Service." when performing crawl

  - by Janis Veinbergs

  Installed SharePoint Services v3 (SP2, october 2009 cumulative updates, Language Pack), attached to a content database I had previously (all works). Installed Search server 2008 Express (with language pack) on top of WSS and crawl does not work. However it works for newly created web application + database. Was playing around with accounts, permissions to try get it working. Currently I have WSS_Crawler account with such permissions: Office Search Server runs with WSS_Crawler account Config database has read permissions for WSS_Crawler Content database has read permissions for WSS_Crawler WSS_Crawler is owner of search database. Added WSS_Crawler to SQL server browser user group and administrator Yes, i'v given more permissions than needed, but it doesn't even work with that and i don't know if its permission problem or what. Crawl log says there is Error in the Site Data Web Service., nothing more. There were known issues with a similar error: Error in the Site Data Web Service. (Value does not fall within the expected range.), but this is not the case as thats an old issue and i hope it has been included in SP2... Logs are from olders to newest (descending order). They don't appear to be very helpful. Crawl log http://serveris Crawled Local Office SharePoint Server sites 3/15/2010 9:39 AM sts3://serveris Crawled Local Office SharePoint Server sites 3/15/2010 9:39 AM sts3://serveris/contentdbid={55180cfa-9d2d-46e4... Crawled Local Office SharePoint Server sites 3/15/2010 9:39 AM http://serveris/test Error in the Site Data Web Service. Local Office SharePoint Server sites 3/15/2010 9:39 AM http://serveris Error in the Site Data Web Service. Local Office SharePoint Server sites 3/15/2010 9:39 AM EventLog No errors in EventLog, just some Information events that Office Server Search provides The search service started. Successfully stored the application configuration registry snapshot in the database. Context: Application 'SharedServices Component: da1288b2-4109-4219-8c0c-3a22802eb842 Catalog: Portal_Content. A master merge was started due to an external request. Component: da1288b2-4109-4219-8c0c-3a22802eb842 A master merge has completed for catalog Portal_Content. Component: da1288b2-4109-4219-8c0c-3a22802eb842 Catalog: AnchorProject. A master merge was started due to an external request. Component: da1288b2-4109-4219-8c0c-3a22802eb842 A master merge has completed for catalog AnchorProject. ULS Log Just some information, but no exceptions, unexpected errors 03/15/2010 09:03:28.28 mssearch.exe (0x1B2C) 0x0E8C Search Server Common GatherStatus 0 Monitorable Insert crawl 771 to inprogress queue hr 0x00000000 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:6591 03/15/2010 09:03:28.28 mssearch.exe (0x1B2C) 0x0E8C Search Server Common GatherStatus 0 Monitorable Request Start Crawl 1, project Portal_Content, crawl 771 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:2875 03/15/2010 09:03:28.28 mssearch.exe (0x1B2C) 0x0E8C Search Server Common GatherStatus 0 Monitorable Advise status change 1, project Portal_Content, crawl 771 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:28.28 w3wp.exe (0x1D98) 0x0958 Search Server Common MS Search Administration 8wn6 Information A full crawl was started on 'Local Office SharePoint Server sites' by BALTICOVO\janis.veinbergs. 03/15/2010 09:03:28.43 mssdmn.exe (0x1750) 0x10F8 ULS Logging Unified Logging Service 8wsv High ULS Init Completed (mssdmn.exe, Microsoft.Office.Server.Native.dll) 03/15/2010 09:03:30.48 mssdmn.exe (0x1750) 0x09C0 Search Server Common MS Search Indexing 8z0v Medium Create CCache 03/15/2010 09:03:30.56 mssdmn.exe (0x1750) 0x09C0 Search Server Common MS Search Indexing 8z0z Medium Create CUserCatalogCache 03/15/2010 09:03:32.06 w3wp.exe (0x1D98) 0x0958 Search Server Common MS Search Administration 90ge Medium SQL: dbo.proc_MSS_PropagationGetQueryServers 03/15/2010 09:03:32.09 w3wp.exe (0x1D98) 0x0958 Search Server Common MS Search Administration 7phq High GetProtocolConfigHelper failed in GetNotesInterface(). 03/15/2010 09:03:34.26 mssearch.exe (0x1B2C) 0x16A4 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project Portal_Content, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:35.92 mssearch.exe (0x1B2C) 0x16A4 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project Portal_Content, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:37.32 mssearch.exe (0x1B2C) 0x16A4 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project Portal_Content, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:37.23 mssdmn.exe (0x1750) 0x1850 Search Server Common MS Search Indexing 8z14 Medium Test TRACE (NULL):(null), (NULL)(null), (CrLf): , end 03/15/2010 09:03:39.04 mssearch.exe (0x1B2C) 0x16A4 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project Portal_Content, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:40.98 mssdmn.exe (0x1750) 0x0B24 Search Server Common MS Search Indexing 7how Monitorable GetWebDefaultPage fail. error 2147755542, strWebUrl http://serveris 03/15/2010 09:03:41.87 mssdmn.exe (0x1750) 0x1260 Search Server Common PHSts 0 Monitorable CSTS3Accessor::GetSubWebListItemAccessURL GetAccessURL failed: Return error to caller, hr=80042616 - File:d:\office\source\search\search\gather\protocols\sts3\sts3acc.cxx Line:505 03/15/2010 09:03:41.87 mssdmn.exe (0x1750) 0x1260 Search Server Common PHSts 0 Monitorable CSTS3Accessor::Init: GetSubWebListItemAccessURL failed. Return error to caller, hr=80042616 - File:d:\office\source\search\search\gather\protocols\sts3\sts3acc.cxx Line:348 03/15/2010 09:03:41.87 mssdmn.exe (0x1750) 0x1260 Search Server Common PHSts 0 Monitorable CSTS3Accessor::Init fails, Url sts3://serveris/siteurl=test/siteid={390611b2-55f3-4a99-8600-778727177a28}/weburl=/webid={fb0e4bff-65d5-4ded-98d5-fd099456962b}, hr=80042616 - File:d:\office\source\search\search\gather\protocols\sts3\sts3handler.cxx Line:243 03/15/2010 09:03:41.87 mssdmn.exe (0x1750) 0x1260 Search Server Common PHSts 0 Monitorable CSTS3Handler::CreateAccessorExB: Return error to caller, hr=80042616 - File:d:\office\source\search\search\gather\protocols\sts3\sts3handler.cxx Line:261 03/15/2010 09:03:40.98 mssdmn.exe (0x1750) 0x1260 Search Server Common MS Search Indexing 7how Monitorable GetWebDefaultPage fail. error 2147755542, strWebUrl http://serveris/test 03/15/2010 09:03:41.90 mssdmn.exe (0x1750) 0x0B24 Search Server Common PHSts 0 Monitorable CSTS3Accessor::GetSubWebListItemAccessURL GetAccessURL failed: Return error to caller, hr=80042616 - File:d:\office\source\search\search\gather\protocols\sts3\sts3acc.cxx Line:505 03/15/2010 09:03:41.90 mssdmn.exe (0x1750) 0x0B24 Search Server Common PHSts 0 Monitorable CSTS3Accessor::Init: GetSubWebListItemAccessURL failed. Return error to caller, hr=80042616 - File:d:\office\source\search\search\gather\protocols\sts3\sts3acc.cxx Line:348 03/15/2010 09:03:41.90 mssdmn.exe (0x1750) 0x0B24 Search Server Common PHSts 0 Monitorable CSTS3Accessor::Init fails, Url sts3://serveris/siteurl=/siteid={505443fa-ef12-4f1e-a04b-d5450c939b78}/weburl=/webid={c5a4f8aa-9561-4527-9e1a-b3c23200f11c}, hr=80042616 - File:d:\office\source\search\search\gather\protocols\sts3\sts3handler.cxx Line:243 03/15/2010 09:03:41.90 mssdmn.exe (0x1750) 0x0B24 Search Server Common PHSts 0 Monitorable CSTS3Handler::CreateAccessorExB: Return error to caller, hr=80042616 - File:d:\office\source\search\search\gather\protocols\sts3\sts3handler.cxx Line:261 03/15/2010 09:03:43.26 mssearch.exe (0x1B2C) 0x0750 Search Server Common GatherStatus 0 Monitorable Advise status change 24, project Portal_Content, crawl 771 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:43.26 mssearch.exe (0x1B2C) 0x1804 Search Server Common GatherStatus 0 Monitorable Remove crawl 771 from inprogress queue - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:6722 03/15/2010 09:03:43.26 mssearch.exe (0x1B2C) 0x0750 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project Portal_Content, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:44.65 mssearch.exe (0x1B2C) 0x1804 Search Server Common GatherStatus 0 Monitorable Insert crawl 772 to inprogress queue hr 0x00000000 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:6591 03/15/2010 09:03:44.65 mssearch.exe (0x1B2C) 0x1804 Search Server Common GatherStatus 0 Monitorable Request Start Crawl 0, project AnchorProject, crawl 772 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:2875 03/15/2010 09:03:44.65 mssearch.exe (0x1B2C) 0x1804 Search Server Common GatherStatus 0 Monitorable Advise status change 0, project AnchorProject, crawl 772 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:44.65 mssearch.exe (0x1B2C) 0x1804 Search Server Common GatherStatus 0 Monitorable Unlock Queue, project Portal_Content - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:2922 03/15/2010 09:03:44.82 mssearch.exe (0x1B2C) 0x1DD0 Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 0 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:44.95 mssearch.exe (0x1B2C) 0x0750 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project AnchorProject, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:46.51 mssearch.exe (0x1B2C) 0x0750 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project AnchorProject, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:46.39 mssearch.exe (0x1B2C) 0x1E4C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 0 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.01 mssearch.exe (0x1B2C) 0x1C6C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.87 mssearch.exe (0x1B2C) 0x155C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.29 mssearch.exe (0x1B2C) 0x155C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.53 mssearch.exe (0x1B2C) 0x155C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.67 mssearch.exe (0x1B2C) 0x155C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.82 mssearch.exe (0x1B2C) 0x155C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.84 mssearch.exe (0x1B2C) 0x155C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 0 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.89 mssearch.exe (0x1B2C) 0x155C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 0 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:49.90 mssearch.exe (0x1B2C) 0x0750 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project AnchorProject, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:51.42 mssearch.exe (0x1B2C) 0x1E4C Search Server Common GatherStatus 0 Monitorable Advise status change 4, project AnchorProject, crawl 772 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:51.00 mssearch.exe (0x1B2C) 0x1E4C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 0 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:51.42 mssearch.exe (0x1B2C) 0x1CCC Search Server Common GatherStatus 0 Monitorable Remove crawl 772 from inprogress queue - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:6722 03/15/2010 09:03:52.96 mssearch.exe (0x1B2C) 0x1CCC Search Server Common GatherStatus 0 Monitorable Insert crawl 773 to inprogress queue hr 0x00000000 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:6591 03/15/2010 09:03:52.96 mssearch.exe (0x1B2C) 0x1CCC Search Server Common GatherStatus 0 Monitorable Request Start Crawl 0, project AnchorProject, crawl 773 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:2875 03/15/2010 09:03:55.29 mssearch.exe (0x1B2C) 0x1CCC Search Server Common GatherStatus 0 Monitorable Unlock Queue, project AnchorProject - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:2922 03/15/2010 09:03:55.29 mssearch.exe (0x1B2C) 0x1CCC Search Server Common GatherStatus 0 Monitorable Removed start crawl request from Queue 0, crawl 773 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:2942 03/15/2010 09:03:55.29 mssearch.exe (0x1B2C) 0x1CCC Search Server Common GatherStatus 0 Monitorable Request Start Crawl 0, project AnchorProject, crawl 773 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:2875 03/15/2010 09:03:55.29 mssearch.exe (0x1B2C) 0x1CCC Search Server Common GatherStatus 0 Monitorable Advise status change 0, project AnchorProject, crawl 773 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:55.37 mssearch.exe (0x1B2C) 0x1CCC Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 0 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:55.37 mssearch.exe (0x1B2C) 0x0750 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project AnchorProject, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:56.71 mssearch.exe (0x1B2C) 0x1E4C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 0 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:56.78 mssearch.exe (0x1B2C) 0x0750 Search Server Common GatherStatus 0 Monitorable Advise status change 12, project AnchorProject, crawl -1 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:58.40 mssearch.exe (0x1B2C) 0x155C Search Server Common GathererSql 0 Monitorable CGatherer::LoadTransactionsFromCrawlInternal Flush anchor, count 0 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4943 03/15/2010 09:03:58.89 mssearch.exe (0x1B2C) 0x155C Search Server Common GatherStatus 0 Monitorable Advise status change 4, project AnchorProject, crawl 773 - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:4853 03/15/2010 09:03:58.89 mssearch.exe (0x1B2C) 0x1130 Search Server Common GatherStatus 0 Monitorable Remove crawl 773 from inprogress queue - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:6722 03/15/2010 09:03:58.89 mssearch.exe (0x1B2C) 0x1130 Search Server Common GatherStatus 0 Monitorable Unlock Queue, project AnchorProject - File:d:\office\source\search\search\gather\server\gatherobj.cxx Line:2922 What could be wrong here - any clues?

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• How can I solve http_port 3129 intercept with squid?

  - by wmoreno3

  My system: uname -a FreeBSD server.local.jmorenov.com.co 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10 UTC 2012 [email protected]:/usr/obj/usr/src/sys/GENERIC amd64 pkg info | grep squid squid-3.2.7 HTTP Caching Proxy I have this configuration in squid.conf: http_port 3128 accel vhost allow-direct # OK http_port 3129 intercept # Does not work icp_port 0 When I tried with: http_port 3129 intercept By switch line on ipnat.rules. In access log appears: 2013/01/09 00:46:03 kid1| IPF (IPFilter) NAT open failed: (13) Permission denied 2013/01/09 00:46:03 kid1| BUG #3329: Orphan Comm::Connection: local=127.0.0.1:3129 remote=192.168.1.129:51595 FD 24 flags=33 2013/01/09 00:46:03 kid1| NOTE: 1 Orphans since last started. /var/log/squid/cache.log 2013/02/08 09:02:33 kid1| Squid plugin modules loaded: 0 2013/02/08 09:02:33 kid1| Accepting reverse-proxy HTTP Socket connections at local=127.0.0.1:3128 remote=[::] FD 33 flags=9 2013/02/08 09:02:33 kid1| Accepting NAT intercepted HTTP Socket connections at local=127.0.0.1:3129 remote=[::] FD 34 flags=41 My /etc/ipnat.rules: root@server:/root # cat /etc/ipnat.rules # em0 = External NIC # bge0 = Internal NIC map em0 0/0 -> 0/32 proxy port ftp ftp/tcp map em0 0/0 -> 0/32 portmap tcp/udp auto map em0 0/0 -> 0/32 # Redirect direct web traffic to local web server. rdr em0 192.168.0.3/32 port 80 -> 127.0.0.1 port 80 tcp rdr bge0 192.168.1.3/32 port 80 -> 127.0.0.1 port 80 tcp # Redirect everything else to squid on port 3128 or 3129 intercept rdr em0 0.0.0.0/0 port 80 -> 127.0.0.1 port 3128 tcp rdr bge0 0.0.0.0/0 port 80 -> 127.0.0.1 port 3128 tcp #rdr em0 0.0.0.0/0 port 80 -> 127.0.0.1 port 3129 tcp #rdr bge0 0.0.0.0/0 port 80 -> 127.0.0.1 port 3129 tcp With 3128 is OK, but with 3129, Does not work, when switch in ipnat.rules.

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• Hyper-V Virtual Ethernet Adapter not working probperly - Code 31 on Host

  - by Chris S

  I have a Windows 8.1 machine with Hyper-V installed. From a "clean" Hyper-V configuration I open Virtual Switch Manager, create an External switch with "Allow management operating system to share this network adapter", click OK. Everything seems to work properly but the host loses network connectivity. Opening Device Manager, the "Hyper-V Virtual Ethernet Adapter" is shown under the Network Adapter section with a yellow triangle, and the following message: This device is not working properly because Windows cannot load the drivers required for this device. (Code 31) An object ID was not found in the file. I tried "Uninstalling" the device, seems to work, but the device doesn't actually remove. I tried removing and re-adding the Hyper-V feature completely, no difference. Tried scf /scannow, no problems. System and Application logs show no errors. The Hyper-V-VMMS Networking log shows the following: Log Name: Microsoft-Windows-Hyper-V-VMMS-Networking Source: Microsoft-Windows-Hyper-V-VMMS Date: 10/24/2013 10:53:07 AM Event ID: 26088 Description: Failed to apply static IP settings to internal Ethernet adapter {A813DE9A-BE70-4FAE-AD31-BE4D54505A4B} ('885435B8-BE65-4EE9-826D-AB56035237ED'): Unspecified error (0x80004005). If I try to remove the Virtual Switch in Hyper-V Virtual Switch Manager I get this in that same log: Log Name: Microsoft-Windows-Hyper-V-VMMS-Networking Source: Microsoft-Windows-Hyper-V-VMMS Date: 10/24/2013 11:19:47 AM Event ID: 26142 Description: Failed while removing virtual Ethernet switch. Trying to remove the Virtual Switch leads to an error: Error applying Virtual Switch Properties changes Failed while removing virtual Ethernet switch. VM Networking does work.

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• Port forwarding on Fortigate 50B

  - by sindre j

  I have serious problems setting up port forwarding on a Fortigate 50B. The unit is basically running as factory default, the wan1 interface is connected to my fibre optic internet modem, and my lan is connected to the internal switch of the Fortigate. The factory default firewall policy allowing traffic from the internal interface to wan1 is kept and I'm able to access the interet as normal. Then I added a virtual ip and a firewall policy for allowing access from the internet to my local servers (ip 192.168.9.51) webserver (standard port 80). The settings I made are as follows. Edit Virtual IP Mapping Name : Server VIP External interface : wan1 Type : Static NAT Extermal IP Address/Range : 0.0.0.0 Mapped IP Address/Range : 192.168.9.51 Port Forwading : not checked Firewall policy Source interface/Zone : wan1 Source address : all Destination interface/Zone : internal Destination address : Server VIP Schedule : always Service : HTTP Action : ACCEPT no other settings checked What happens now is that I'm unable to access internet from my server, I'm not getting through to the webserver from internet either. I'm able to ping a site on the outside, but all web traffic is blocked, both ways. I've checked the documentation, but as far as I can tell I have set this up correctly. Anyone here with knowledge of Fortigate port forwading/NAT?

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• IPtables AWS EC2 NAT/Reverse NAT - For Reverse Proxy style setup but with IPtables

  - by Mark

  I was thinking initially needing to do a reverse proxy or something so I could get some SSL/TLS traffic look like it is being terminated at a server and IP address in the AWS cloud, and then that traffic is forwarded onto our actual web servers that aren't in the cloud... I've not done much iptables pre and post routing before Dnat or Snat which I know are the things I need or a combination of the things I need in order achieve what i'm trying. Things to note:- Client/User - Must not be able to see backend IP address and only see the IP address of the cloud box https (TLS/SSL) - connection shouldn't be terminated at the cloud box, it should act like a router almost EC2 instance - Has only one network interface available to play with... this is thus an (internet <- internet) type of routing going on. EC2 instance IP address is already more or less behind a NAT that I have no control over, for example... Public ip address could be 46.1.1.1 but instance IP will be 10.1.1.1. Connections from client will go to 46.1.1.1 which will end up at the instance and on interface 10.1.1.1. The connection from the client then needs to be forwarded (DNAT) onto the backend web servers which are back out on the internet (SNAT). Possibly a part of the problem could be that the SNAT will need to be set to the external interface of the instance and I wonder if this makes it harder for IPtables to track the connection? So looking to basically, have it look as though connections are terminating at this server and its IP address. Whereas all that's really happening is the https request and connection is being forwarded straight onto another internet facing web server. How possible does that sound?

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