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  • Load balancing a console application or service

    - by David
    So it's easy to load balance an ASP.NET web application. You set up a load balancer between two servers, and if the web server isn't responding on Port 80, it won't receive requests. Are there any proven techniques for doing this for a C# console application or Windows service that takes actions of its own volition? Are there any frameworks for knowing if peer processes are alive or dead, doing heartbeats, etc? I've been experimenting a bit with NServiceBus and it seems like, for certain kinds of applications, it would help to have most of the work done as a response to an event, which makes it more like a web application, actually, and therefore easier to scale and load balance with multiple processes, but I feel like that's a half-baked solution since in most cases there usually needs to be some concept of a "master" process that's responsible for getting work started.

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  • Blackberry - Exception when sending SMS programmatically

    - by user213199
    Hello all, I am developing a Blackberry application. I am trying to send SMS programmatically to GSM number. I have gone through many queries and answers related to that and finally added the code for that as below. When the code tries to execute sending some text message to the particular mobile number, it doesn't send and throws exception as "blocking operation not permitted on event dispatch thread". So i created a separate background thread where i put the SMS code and running the code now. But still observing the same exception. Could someone please suggest what am i doing wrong (or) how to do that? class DummyFirst extends MainScreen { private Bitmap background; private VerticalFieldManager _container; private VerticalFieldManager mainVerticalManager; private HorizontalFieldManager horizontalFldManager; private BackGroundThread _thread; CustomControl buttonControl1; public DummyFirst() { super(); LabelField appTitle = new LabelField("Dummy App"); setTitle(appTitle); background = Bitmap.getBitmapResource("HomeBack.png"); _container = new VerticalFieldManager(Manager.NO_VERTICAL_SCROLL | Manager.NO_VERTICAL_SCROLLBAR) { protected void paint(Graphics g) { // Instead of these next two lines, draw your bitmap int y = DummyFirst.this.getMainManager() .getVerticalScroll(); g.clear(); g.drawBitmap(0, 0, background.getWidth(), background .getHeight(), background, 0, 0); super.paint(g); } protected void sublayout(int maxWidth, int maxHeight) { int width = background.getWidth(); int height = background.getHeight(); super.sublayout(width, height); setExtent(width, height); } }; mainVerticalManager = new VerticalFieldManager( Manager.NO_VERTICAL_SCROLL | Manager.NO_VERTICAL_SCROLLBAR) { protected void sublayout(int maxWidth, int maxHeight) { int width = background.getWidth(); int height = background.getHeight(); super.sublayout(width, height); setExtent(width, height); } }; HorizontalFieldManager horizontalFldManager = new HorizontalFieldManager(Manager.USE_ALL_WIDTH); buttonControl1 = new CustomControl("Send", ButtonField.CONSUME_CLICK, 83, 15); horizontalFldManager.add(buttonControl1); this.setStatus(horizontalFldManager); FieldListener listner = new FieldListener(); buttonControl1.setChangeListener(listner); _container.add(mainVerticalManager); this.add(_container); } class FieldListener implements FieldChangeListener { public void fieldChanged(Field f, int context) { if (f == buttonControl1) { _thread = new BackGroundThread(); _thread.start(); } } } private class BackGroundThread extends Thread { public BackGroundThread() { /*** initialize parameters in constructor *****/ } public void run() { // UiApplication.getUiApplication().invokeLater(new Runnable() UiApplication.getUiApplication().invokeLater(new Runnable() { public void run() { try { MessageConnection msgConn = (MessageConnection) Connector .open("sms://:0"); Message msg = msgConn .newMessage( MessageConnection.TEXT_MESSAGE); TextMessage txtMsg = (TextMessage) msg; String msgAdr = "sms://+919861348735"; txtMsg.setAddress(msgAdr); txtMsg.setPayloadText("Test Message"); // here exception is thrown msgConn.send(txtMsg); System.out.println("Sending" + " SMS success !!!"); } catch (Exception e) { System.out.println(e.getMessage()); e.printStackTrace(); } } // run }); } } public boolean onClose() { System.out.println("close event called, request to be" + " in the backgroud...."); UiApplication.getUiApplication().requestBackground(); return true; } } I resolved this issue by creating a separate thread and then not using Port etc. Here it is: SMSThread smsthread = new SMSThread("Some message",mobNumber); smsthread.start(); class SMSThread extends Thread { Thread myThread; MessageConnection msgConn; String message; String mobilenumber; public SMSThread( String textMsg, String mobileNumber ) { message = textMsg; mobilenumber = mobileNumber; } public void run() { try { msgConn = (MessageConnection) Connector.open("sms://+"+ mobilenumber); TextMessage text = (TextMessage) msgConn.newMessage(MessageConnection.TEXT_MESSAGE); text.setPayloadText(message); msgConn.send(text); msgConn.close(); } catch (Exception e) { System.out.println("Exception: " + e); } } }

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  • What happens if my IExceptionPublisher throws an Exception?

    - by Graphain
    Hi, I'm using the .NET Exception Management Application Block (EMAB). As part of this I am implementing IExceptionPublisher classes. However, I am wondering what happens if these publishers encounter an Exception. I had a bit of a look around and apparently they are meant to do something like this: try { /* Normal Exception Publishing */ } catch { ExceptionManager.PublishInternalException(exception, additionalInfo); } Source: One caveat: what happens if there is an exception in our custom publisher code, preventing the publishing to MSMQ? For that, we turn to the ExceptionManager.PublishInternalException method, which will publish the exception to the default publisher, which is the Windows application event log. However, PublishInternalException is both protected and internal so I would have to be implementing ExceptionManager, not IExceptionPublisher, to access it.

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  • Occasional Deadlock.

    - by Carl Robinson
    Im having trouble with a web application that will deadlock occasionally There are 3 queries involved. 2 are trying to update a table UPDATE AttendanceRoll SET ErrorFlag = 0 WHERE ContractID = @ContractID AND DATEPART(month,AttendanceDate) = DATEPART(month,@Month_Beginning) AND DATEPART(year,AttendanceDate) = DATEPART(year,@Month_Beginning) and one is trying to insert into the table INSERT INTO AttendanceRoll (AttendanceDate, ContractID, PersonID, StartTime, EndTime, Hours, AbsenceReason, UpdateCount, SplitShiftID, ModifiedBy, ModifiedDate) SELECT @P33, @P34, @P35, CONVERT(datetime,REPLACE( @P36 ,&apos;.&apos;,&apos;:&apos;)), CONVERT(datetime,REPLACE( @P37 ,&apos;.&apos;,&apos;:&apos;)), @P38, @P39, @P40, 1, @P41, GETDATE() The deadlock graph shows a kind of circular arangement of page locks and an exchange event and the 2 update queries have the same server process id. If anyone has any ideas about how I should go about solving this issue it would be most appreciated. I have the deadlock graph that I can post if anybody needs to see it. Thanks Carl R

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  • How To Disable Inertia in ScatterView

    - by jack-amble
    Using ScatterView control shipped in Windows Touch WPF. I want to prevent inertia from happening on a scatterview item. But I still want to allow user to move, scale and rotate the item. So I try this... ScatterviewItem svi = new ScatterviewItem(); svi.ManipulationDelta += OnManipulationDelta; ... void OnManipulationDelta(object sender, ManipulationDeltaEventArgs args) { if (args.IsInertial) { args.Complete(); args.Handled = true; } } But the event is never firing. Am I doing something wrong, or is there another way to do this, or is preventing inertia simply not possible with scatterview?

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  • Ext GWT (GXT) tooltip over a grid row

    - by Eduardo Palma
    I'm developing a custom tooltip using Ext GWT (GXT) for a project of mine, and this tooltip has to appear over Grid rows when they're selected. I can't use the default GXT tooltip or quicktip because I need be able to add Components (like buttons) to this tooltip. The problem is that the GXT Grid component doesn't expose a event related to mousing over a row (although there's RowClick and RowMouseDown). I tried adding a listener to the Grid with the OnMouseOver and OnMouseOut events anyway, but it doesn't work as expected. It fires these events up whenever you mouse over any of the divs and spans that composes a row. The only way I see to solve this is to subclass the GridView component and make each row become a Component itself, but that would be a lot of work and would probably impact performance as well. I can't help but think there's a better way to do this. Could someone more experienced with GXT give me a light?

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  • mmc could not create the snap-in. CLSID: FX:{18ea3f92-d6aa-41d9-a205-2023400c8fbb} error

    - by Tammy
    MMC Snap-in will not load most processes and throws an error on Windows 2008R2 x64. It gives the error: mmc could not create the snap-in. CLSID: FX:{18ea3f92-d6aa-41d9-a205-2023400c8fbb} when opening server manager. It also gives similar errors opening event viewer, etc. I think that the .NET Framework is messed up but I can't narrow down the exact cause. Has anyone else seen this issue. I have a dmp file of mmc.exe but haven't been able to get anything meaningful out of it.

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  • serverside controls vs html controls from AJAX point of view

    - by devmania
    hi, i know this question have been mentioned alot here but mine is a little more updated, now with ASP.net 4 and new Ajax client templating plus JASON services. so if i got all these new capabilities will i really need server side controls as long as i can bind on client side, create data-views on client side heck i can even use data-context and apply CRUD operations on clients side. so i actually i wont need button_click server side event or what so ever... i am asking this because i own some commercial Controls like Telerik and Component art and they both offer client side operations ow but still i am confused as to my knowledge creating these controls will still have to go through Page Life cycle please advise me.

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  • SQL Server CE - Internal error: Cannot open the shared memory region

    - by blu
    I have a SQL Server CE database that works fine in dev, but when installed on the client has an issue. The SQL Server CE 3.5 dependencies are copied as part of the deployment. The target machine is a clean Windows 7 32-bit Ultimate image. The message for the exception in the event log is: Internal error: Cannot open the shared memory region. It looks like this is SSCE_M_CANTOPENSHAREDMEMORY and the site says there isn't a connection string value to change this and that these issues are typically not resolvable by the end developers. Has anyone run into this, and if so were you able to resolve this issue?

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  • Anyone else unable to listen to uncaughtErrorEvent when loaded by another swf?

    - by aaaidan
    When I try to access the uncaughtErrorEvents dispatcher when loaded directly, everything works well. But when I try the same code when loaded by another swf I get a reference error. protected function onAddedToStage(e:Event):void { trace("Flash version: " + Capabilities.version); try { loaderInfo.uncaughtErrorEvents.addEventListener("uncaughtError", onUncaughtError); trace("YAY!"); } catch (e:Error) { trace(e); } } Output when loaded directly (in browser): Flash version: MAC 10,1,53,64 YAY! Output when loaded by another "loader" SWF: Flash version: MAC 10,1,53,64 ReferenceError: Error #1069: Property uncaughtErrorEvents not found on flash.display.LoaderInfo and there is no default value. If others can replicate this I'd be appreciative. EDIT: Also have tried this with stage.loaderInfo, instead of just loaderInfo. Same issue...

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  • Facebook Like button working but not sharing

    - by Victor P
    Im using the XFBML version of the Like button but the "Share it" box with the space to leave a comment doesn't show up after clicking "Recommend". The rest works fine. Im using this code: <fb:like href="www.google.cl" width="300" action="recommend" font="lucida grande"></fb:like> And, in the end of the page </body> <div id="fb-root"></div> <script src="http://connect.facebook.net/en_US/all.js"></script> <script> FB.init({appId: '1234567890', status: true, cookie: true, xfbml: true}); FB.Event.subscribe('auth.sessionChange', function(response) { if (response.session) { // A user has logged in, and a new cookie has been saved } else { // The user has logged out, and the cookie has been cleared } }); </script> </html> Do you know what is happening? Any advice is warmly received. Thanks

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  • ExtJS: Login with 'Remember me' functionality

    - by Chau
    I'm trying to create a simple login window with the very common 'Remember me' functionality. The login validation is done AJAX style, thus the browser won't remember my input. My approach is to use the built-in state functionality, but how to use it confuses me. Ext.state.Manager.setProvider(new Ext.state.CookieProvider({ expires: new Date(new Date().getTime()+(1000*60*60*24*7)), //7 days from now })); ... { xtype: 'textfield', fieldLabel: 'User name', id: 'txt-username', stateful: true, stateId: 'username' }, { xtype: 'textfield', fieldLabel: 'Password', id: 'txt-password', inputType: 'password', stateful: true, stateId: 'password' }, { xtype: 'button', text: 'Validate', stateEvents: 'click' } I know I have to implement the getState method, but on what component (my guess is on the two textfields)? Another thing I fail to realize is, how is my click event on the button connected to the state properties of my textfields?

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  • GWT - ListBox - pre-selecting an item

    - by rgoytacaz
    Hey there Stackoverflow, I got a doubt regarding pre-selecting(setSelectedIndex(index)) an item in a ListBox, Im using Spring + GWT. I got a dialog that contains a painel, this panel has a flexpanel, in which I've put a couple ListBox, this are filled up with data from my database. But this painel is for updates of an entity in my database, thus I wanted it to pre-select the current properties for this items, alowing the user to change at will. I do the filling up in the update method of the widget. I tried setting the selectedItem in the update method, but it gives me an null error. I've searched a few places and it seems that the listbox are only filled at the exact moment of the display. Thus pre-selecting would be impossible. I thought about some event, that is fired when the page is displayed. onLoad() doesnt work.. Anyone have something to help me out in here? Thx in advance, Rodrigo Dellacqua

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  • MS Access 2003 - Message Box: How can I answer "ok" automatically through code

    - by Justin
    So a couple silly questions: If I include this in some event: MsgBox " ", vbOkOnly, "This little message box" could I then with some more code turn around and 'click the ok button. So that basically the message boox automatically pops up, and then automatically goes away? I know its silly because you want to know, why do you want the message box then..... well a) i just want to know if you can do that, and what would be the command b) i have some basic shapes (shape objects) that are made visible when the message box appears. But without having the message box there, there is no temporary disruption of code while waiting for the button to be clicked, and therefor those pretty image objects being made visible does take effect on the the form. So I really do not need the message box, just the temp disruption that shows the objects. Thanks!

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  • Cocos2d:How to Zoom-in Zoom-out effect on a Sprite image?

    - by user187532
    Hello everyone, I am developing module where-in i pick the image from photo library and put into a Sprite. I want to implement Zoom-in, Zoom-out kind of effect for a Sprite image, same like camera album images zoom in/out effect. Could someone please guide me how do i implement it? I see somewhere is that, i have to detect two touch events in TouchBegan and then Adjust the Sprite Scale size to up or down based on the distance of two fingers touch event values. Could someone please tell me, How do i detect two fingers touch values in TouchBegan? How to allow to touch and Zoom-in/out of Sprite image by user? Please give me samples. I tried already some stuff (http://groups.google.com/group/cocos2d-iphone-discuss/browse_thread/thread/61808fd6b578e5e1?hide_quotes=no&utoken=9AdrAzkAAABFNHPPibbeOSHIuKOkxTWQ066onEraO3W2r08xbUjNmAwT6_SsyC2n0d69MF_vYn77vPb7MuI5eIWgjrXT32Kd) but doesn't work for my requirement. Thank you.

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  • C# best means to store data locally when offline

    - by mickartz
    I am in the midst of writing a small program (more to experiment with vs 2010 than anything else) Despite being an experiment it has some practical use for our local athletics club. My thought was to access the DB (currently online) to download the current members and store locally on a laptop (this is a MS sql table, used to power the club's website). take the laptop to the event (yes there ARE places that don't have internet coverage), add members to that days race (also a row from a sql table (though no changes would be made to this), record results (new records in 3rd table) Once home, showered and within internet access again, upload/edit the tables as per the race results/member changes etc. So I was thinking i'd do something like write xml files locally with the data, including a field to indicate changes etc? If anyone can point me in a direction i would appreciate it...hell if anyone could tell me if this has a name!!..I'd appreciate it TIA Michael Artz

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  • Objective C++ support in autotools

    - by vian
    I'm working under Mac OS X 10.6.5 autoconf version 2.68 automake version 1.11.1 In a large project that is built using autoconf, automake, I need to add .mm files to the library sources. When I add them to the library_SOURCES variable they won't compile even after I use AS_IF([test "$with_target" = "quartz"], [AC_PROG_OBJCXX]) in my configure.ac. The test is passed successfully and it event outputs checking whether we are using the GNU Objective C++ compiler... yes and .mm files don't compile. Where can I look to solve this problem?

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  • wampserver installation

    - by Diego
    Hi. I'm trying to install wampserver on my windows xp pc. It is throwing this error: C:\wamp\wampmanager.exe An error occurred while trying to rename a file in the destination directory: MoveFile failed; code 2. El sistema no puede hallar el archivo especificado. Click Retry to try again, Ignore to skip this file (not recommended), or Abort to cancel installation. First time on this error I tried to retry but it threw the error again and again. If I decide to ignore, then the installation finishes and all the files are correct but the exe to open wampserver. I tried to copy from one pc to other and I couldn't event paste it in the destination folder. Please healp me. Sorry for my bad english and thank you in advance

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  • WPF RichTextBox - Formatting of typed text

    - by Alan Spark
    I am applying formatting to selected tokens in a WPF RichTextBox. To do this I get a TextRange that encompasses the token that I would like to highlight. I will then change the color of the text like this: textRange.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Blue); This is happening on the TextChanged event of my RichTextBox. The formatting is applied as expected, but continuing to type text will result in the new text inheriting the formatting that has already been applied to the adjacent word. I would like the formatting of any new text to use the default formatting options defined in the RichTextBox properties. Is this possible? Alternatively I could highlight all tokens that I don't want be blue with the default formatting options but this feels awkward to me.

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  • How to close window in ie using link and onbeforeunload?

    - by Salil
    Hi All, I open a pop-up window using following code in main.html function openwindow(url) { window.open(url, "mywindow","location=1,status=1,scrollbars=1,resizable=no,width=650,height=650"); } Open In My child.html i used function closewindow() { self.close(); } function closeIt() { return "Your chat will be terminated. Are you sure?" } < a href="javascript:void(0)" onclick="closewindow();"Close Window< /a     When i click on close window it gize me alert message that i given on event onbeforeunload but it not close the window when i click on Ok.Also this happens only in I.E. & working fine in mozilla, netscape, safari. I checked it on IE6 & IE8 Any help is Appreciated. Regards, Salil Gaikwad

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  • Flex3 / Air 2: NativeProcess doesn't accepts standard input data (Error #2044 & #3218)

    - by Edward
    Hi: I'm trying to open cmd.exe on a new process and pass some code to programatically eject a device; but when trying to do this all I get is: "Error #2044: Unhandled IOErrorEvent:. text=Error #3218: Error while writing data to NativeProcess.standardInput." Here's my code: private var NP:NativeProcess = new NativeProcess(); private function EjectDevice():void { var RunDLL:File = new File("C:\\Windows\\System32\\cmd.exe"); var NPI:NativeProcessStartupInfo = new NativeProcessStartupInfo(); NPI.executable = RunDLL; NP.start(NPI); NP.addEventListener(Event.STANDARD_OUTPUT_CLOSE, CatchOutput, false, 0, true); NP.standardInput.writeUTFBytes("start C:\\Windows\\System32\\rundll32.exe shell32.dll,Control_RunDLL hotplug.dll"); NP.closeInput(); } I also tried with writeUTF instead of writeUTFBytes, but I still get the error. Does anyone have an idea of what I'm doing wrong?. Thanks for your time :) Edward.

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  • FullCalender with JQuery and Google Calender

    - by Marv
    Hi, i got a problem with fullcalender and google calender. My fullcalender does not show the google entrys. Need help plz :) <script type="text/javascript">// <![CDATA[ $(document).ready(function() { var date = new Date(); var d = date.getDate(); var m = date.getMonth(); var y = date.getFullYear(); $('#calendar').fullCalendar({ header: { left: 'prev,next today', center: 'title', right: 'month,basicWeek,basicDay' }, }); $('#calendar').fullCalendar({ events: $.fullCalendar.gcalFeed( "http://www.google.com/calendar/feeds/marvin.spies%40gmx.de/public/basic/", { // put your options here className: 'gcal-event', editable: true, currentTimezone: 'Europe/Berlin' } ) }); }); // ]]  

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  • How to "bubble" a Controls features when place in a custom UserControl

    - by Ted
    I'll try to explain what Im after. I dont know the technical term for it, so here goes: Example 1: If I place a LisView on a Form and add som columns I am able, in Design-Time, to click-and-drag the columns to resize them. Example 2: Now, I place a ListView in a UserControl and name it "MyCustomListView" (and perhaps add some method to enhance it somehow). If I know place the "MyCustomListView" on a Form I am unable to click-and-drag the column headers to resize them in Design-Time. Is there any way to easily make that happen? Some form of "pass the click-and-drag event to the underlying control and let that control do its magic". Im not really looking to recode, just pass on the mouseclick (or whatever it is) and let the, in this case, ListView react as it did in the first example above. Regards

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  • WPF - Binding problem

    - by Erez
    Why after clicking the button the text in the textblock doesn't change ? XAML: <Grid> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Text="{Binding Name}"/> <Button Click="Button_Click" Grid.Row="1" Margin="20">Click Me</Button> </Grid> Code behind: public partial class Window1 : Window, INotifyPropertyChanged { private Person _myPerson; public Person MyPerson { get { return _myPerson; } set { _myPerson = value; if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs("MyPerson")); } } } public Window1() { MyPerson = new Person { Name = "A" }; DataContext = MyPerson; InitializeComponent(); } private void Button_Click(object sender, RoutedEventArgs e) { MyPerson = new Person { Name = "B" }; } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; #endregion }

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  • jQuery slideToggle stay open on hover

    - by durilai
    I have a div that I have bound the jQuery hover event to activate a slideDown using slideToggle: <div class="Square"> <div class="RedSquare"></div> <div class="GraySquare"></div> </div> $("div.RedSquare").hover( function() { $(this).siblings("div.GraySquare").slideToggle("fast"); }, function() { $(this).siblings("div.GraySquare").slideToggle("fast"); } ); It toggles a div '.GraySquare' right below it. Basically making a gray box slide down from the red box. The problem I am facing is that when the mouse moves over the gray div the slide toggles up. I want it to remain down when hovering over the red or gray square. Any help is appreciated.

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