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• KeepAlive packets over a Soap request

  - by Nycto

  I've been debugging some Soap requests we are making between two servers on the same VLAN. The app on one server is written in PHP, the app on the other is written in Java. I can control and make changes to the PHP code, but I can't affect the Java server. The PHP app forms the XML using the DOMDocument objects, then sends the request using the cURL extension. When the soap request took longer than 5 minutes to complete, it would always wait until the max timeout limit and exit with a message like this: Operation timed out after 900000 milliseconds with 0 bytes received After sniffing the packets that were being sent, it turns out that the problem was caused by a 5 minute timeout in the network that was closing what it thought was a stale connection. There were two ways to fix it: bump up the timeout in iptables, or start sending KeepAlive packets over the request. To be thorough, I would like to implement both solutions. Bumping up the timeout was easy for ops to do, but sending KeepAlive packets is turning out to be difficult. The cURL library itself supports this (see the --keepalive-time flag for the CLI app), but it doesn't appear that this has been implemented in the PHP cURL library. I even checked the source to make sure it wasn't an undocumented feature. So my question is this: How the heck can I get these packets sent? I see a few clear options, but I don't like any of them: Write a wrapper that will kick off the request by shell_execing the CLI app. This is a hack that I just don't like Update the cURL extension to support this. This is a non-option according to Ops. Open the socket myself. I know just enough to be dangerous. I also haven't seen a way to do this with fsockopen, but I could be missing something. Switch to another library. What exists that supports this? Thanks for any help you can offer.

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• WCF ChannelFactory against SOA principles?

  - by Georgia Brown

  Is sharing a project containing the wcf interface and datacontracts and using these via ChannelFactory to consume the service against SOA principles? My architect is advising that generating a proxy using Add Service Reference is preferable.

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• UiTextField events

  - by Mike

  When I create UITextField inside Interface Builder, I can access Events tab for it, which has events like Value changed, Touch cancel, Touch drag, etc. I can assign my own methods to every of those events. How can I do the same, when I create UITextField programmatically with alloc?

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• load class not in classpath dynamically in web application - without using custom classloader

  - by swdeveloper

  I am developing a web application. The web application generates java classes on the fly. For example it generates class com.people.Customer.java In my code, I dynamically compile this to get com.people.Customer.class and store in some directory say repository/com/people/Customer.class which is not on the classpath of my application server.My application server(I am using WebSphere Application Server/Apache Tomcat etc) picks up the classes from the WEB-INF/classes directory. The Classloader would use this to load the classes. After compilation I need to load this class so that it becomes accessible to other classes using it after its creation. 4.When I use Thread.currentThread().getContextClassLoader().loadClass(com.people.Customer) obviously the Classloader is not able to load the class, since its not on the classpath(not in WEB-INF/classes). Due to similar reasons, getResource(..) or getResourceAsStream(..) also does not work. I need a way to : Read the class Customer.class maybe as a stream (or any other way would do) and then load it. Following are the constraints: I cannot add the repository folder to the WEB-INF/classes folder. I cannot create a new Custom ClassLoader. If I create a new ClassLoader and this loads the class, it will not be accessible to its parent ClassLoader. Is there any way of achieving this? If not this, in the worse case, is there a way of overriding the default class loader with a custom class loader for web applications the same classloader should be used to load applications throughout entire lifecycle of my web application. Appreciate any solution :)

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• Shortcut for "Jump to" submenu in coderush/refactor pro

  - by aktersnurr

  Is it possible to set a shortcut for the "Jump to" submenu that shows up when I right click on a method(could be a class, interface etc...) with coderush/refactor pro installed? I'm using version 3.23 of DXCore, CodeRush and Refactor! Pro, with VS 2008.

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• Showing login view controller before main tab bar controller

  - by Padawan

  I'm creating an iPad app with a tab bar controller that requires login. So on launch, I want to show a LoginViewController and if login is successful, then show the tab bar controller. This is how I implemented an initial test version (left out some typical header stuff, etc)... AppDelegate.h: @interface AppDelegate_Pad : NSObject <UIApplicationDelegate, LoginViewControllerDelegate> { UIWindow *window; UITabBarController *tabBarController; } @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet UITabBarController *tabBarController; @end AppDelegate.m: @implementation AppDelegate_Pad @synthesize window; @synthesize tabBarController; - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { LoginViewController_Pad *lvc = [[LoginViewController_Pad alloc] initWithNibName:@"LoginViewController_Pad" bundle:nil]; lvc.delegate = self; [window addSubview:lvc.view]; //[lvc release]; [window makeKeyAndVisible]; return YES; } - (void)loginViewControllerDidFinish:(LoginViewController_Pad *)loginViewController { [window addSubview:tabBarController.view]; } - (void)dealloc {...} @end LoginViewController_Pad.h: @protocol LoginViewControllerDelegate; @interface LoginViewController_Pad : UIViewController { id<LoginViewControllerDelegate> delegate; } @property (nonatomic, assign) id <LoginViewControllerDelegate> delegate; - (IBAction)buttonPressed; @end @protocol LoginViewControllerDelegate -(void)loginViewControllerDidFinish:(LoginViewController_Pad *)loginViewController; @end LoginViewController_Pad.m: @implementation LoginViewController_Pad @synthesize delegate; ... - (IBAction)buttonPressed { [self.view removeFromSuperview]; [self.delegate loginViewControllerDidFinish:self]; } ... @end So the app delegate adds the login view controller's view on launch and waits for login to call "did finish" using a delegate. The login view controller calls removeFromSuperView before it calls didFinish. The app delegate then calls addSubView on the tab bar controller's view. If you made it up to this point, thanks, and I have three questions: MAIN QUESTION: Is this the right way to show a view controller before the app's main tab bar controller is displayed? Even though it seems to work, is it a proper way to do it? If I comment out the "lvc release" in the app delegate then the app crashes with EXC_BAD_ACCESS when the button on the login view controller is pressed. Why? With the "lvc release" commented out everything seems to work but on the debugger console it writes this message when the app delegate calls addSubView for the tab bar controller: Using two-stage rotation animation. To use the smoother single-stage animation, this application must remove two-stage method implementations. What does that mean and do I need to worry about it?

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• Can I avoid explicit 'self'?

  - by bguiz

  I am fairly new to Python and trying to pick it up, so please forgive if this question has a very obvious answer! I have been learning Python by following some pygame tutorials. Therein I found extensive use of the keyword self, and coming from a primarily Java background, I find that I keep forgetting to type self. For example, instead of self.rect.centerx I would type rect.centerx, because, to me, rect is already a member variable of the class. The Java parallel I can think of for this situation is having to prefix all references to member variables with this. Am I stuck prefixing all member variables with self, or is there a way to declare them that would allow me to avoid having to do so? Even if what I am suggesting isn't "pythonic", I'd still like to know if it is possible. I have taken a look at these related SO questions, but they don't quite answer what I am after: Python - why use “self” in a class? Why do you need explicitly have the “self” argument into a Python method?

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• Strategy pattern and "action" classes explosion

  - by devoured elysium

  Is it bad policy to have lots of "work" classes(such as Strategy classes), that only do one thing? Let's assume I want to make a Monster class. Instead of just defining everything I want about the monster in one class, I will try to identify what are its main features, so I can define them in interfaces. That will allow to: Seal the class if I want. Later, other users can just create a new class and still have polymorphism by means of the interfaces I've defined. I don't have to worry how people (or myself) might want to change/add features to the base class in the future. All classes inherit from Object and they implement inheritance through interfaces, not from mother classes. Reuse the strategies I'm using with this monster for other members of my game world. Con: This model is rigid. Sometimes we would like to define something that is not easily achieved by just trying to put together this "building blocks". public class AlienMonster : IWalk, IRun, ISwim, IGrowl { IWalkStrategy _walkStrategy; IRunStrategy _runStrategy; ISwimStrategy _swimStrategy; IGrowlStrategy _growlStrategy; public Monster() { _walkStrategy = new FourFootWalkStrategy(); ...etc } public void Walk() { _walkStrategy.Walk(); } ...etc } My idea would be next to make a series of different Strategies that could be used by different monsters. On the other side, some of them could also be used for totally different purposes (i.e., I could have a tank that also "swims"). The only problem I see with this approach is that it could lead to a explosion of pure "method" classes, i.e., Strategy classes that have as only purpose make this or that other action. In the other hand, this kind of "modularity" would allow for high reuse of stratagies, sometimes even in totally different contexts. What is your opinion on this matter? Is this a valid reasoning? Is this over-engineering? Also, assuming we'd make the proper adjustments to the example I gave above, would it be better to define IWalk as: interface IWalk { void Walk(); } or interface IWalk { IWalkStrategy WalkStrategy { get; set; } //or something that ressembles this } being that doing this I wouldn't need to define the methods on Monster itself, I'd just have public getters for IWalkStrategy (this seems to go against the idea that you should encapsulate everything as much as you can!) Why? Thanks

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• problem with monitor

  - by misha nesterenko

  I have an Asus VB191T connected to notebook via DVI connector as secondary monitor. I am observing some problems on that monitor. Photo of a properly functioning screen: Photo of my Asus VB191T screen: So as you can see there are white lines on both sides of black ones. Resolution is set to the monitor's native resolution which is 1280x1024. The artifacts don't appear for every color, and they show up the clearest where there is black on a grey background. What could be wrong? The monitor itself? Perhaps the connector?

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• Django Admin Form for Many to many relationship

  - by Anand

  I have a many to many relationship between 2 tables Users an Domains. I have defined this relationship in the Domains class. So in the admin interface I see the Users when I am viewing Domains. But I do not see Domains when I am viewing Users. How can I achieve this.

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• Custom paging using GridView

  - by Anil Namde

  I have followed this article to implement the custom pagination using GridView. I have also done custom pagination using the DataGrid but i am still confused on following things. DataGrid which is there in the ASP.NET 1.1 having VirtualPageCount (something similar) which is set to render the pagination interface [1 2 3 4 5 ... something like this] GridView does not have the above mentioned property then how to generate the pagination UI?

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• Why does 1080p through a VGA cable fit my HDTV but is oversized when through an HDMI cable?

  - by GraemeF

  I have put together a new PC with a XFX GeForce GTX 260 graphics card and have it connected to my HDTV. First, I used an old VGA cable with a DVI to VGA adapter and plugged it in to my HDTV's VGA port. Running at 1920x1080 it fit the screen perfectly. Now, to avoid running another cable across the room, I have connected it with a DVI to HDMI cable to my TV's HDMI port, and the desktop at 1920x1080 is cropped by the edge of the screen. I have "fixed" the cropping by using NVIDIA's "Adjust desktop size and position" tool, which created a screen resolution of 1814x1022 to fit the screen, but this is no longer the TV's native resolution and confuses some software (e.g. WoW). Why does VGA work as expected, but HDMI is scaled up? Can it be avoided?

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• Where would I implement this array to pass?

  - by Keeano Martin

  I currently build an NSMutableArray in Class A.m within the ViewDidLoad Method. - (void)viewDidLoad { [super viewDidLoad]; //Question Array Setup and Alloc stratToolsDict = [[NSMutableDictionary alloc] initWithObjectsAndKeys:countButton,@"count",camerButton,@"camera",videoButton,@"video",textButton,@"text",probeButton,@"probe", nil]; stratTools = [[NSMutableArray alloc] initWithObjects:@"Tools",stratToolsDict, nil]; stratObjectsDict = [[NSMutableDictionary alloc]initWithObjectsAndKeys:stratTools,@"Strat1",stratTools,@"Strat2",stratTools,@"Strat3",stratTools,@"Strat4", nil]; stratObjects = [[NSMutableArray alloc]initWithObjects:@"Strategies:",stratObjectsDict,nil]; QuestionDict = [[NSMutableDictionary alloc]initWithObjectsAndKeys:stratObjects,@"Question 1?",stratObjects,@"Question 2?",stratObjects,@"Question 3?",stratObjects,@"Question 4?",stratObjects,@"Question 5?", nil]; //add strategys to questions QuestionsList = [[NSMutableArray alloc]init]; for (int i = 0; i < 1; i++) { [QuestionsList addObject:QuestionDict]; } NSLog(@"Object: %@",QuestionsList); At the end of this method you will see QuestionsList being initialized and now I need to send this Array to Class B. So I place its setters and getters using the @property and @Synthesize method. Class A.h @property (retain, nonatomic) NSMutableDictionary *stratToolsDict; @property (retain, nonatomic) NSMutableArray *stratTools; @property (retain, nonatomic) NSMutableArray *stratObjects; @property (retain, nonatomic) NSMutableDictionary *QuestionDict; @property (retain, nonatomic) NSMutableArray *QuestionsList; Class A.m @synthesize QuestionDict; @synthesize stratToolsDict; @synthesize stratObjects; @synthesize stratTools; @synthesize QuestionsList; I use the property method because I am going to call this variable from Class B and want to be able to assign it to another NSMutableArray. I then add the @property and @class for Class A to Class B.h as well as declare the NSMutableArray in the @interface. #import "Class A.h" @class Class A; @interface Class B : UITableViewController<UITableViewDataSource, UITableViewDelegate>{ NSMutableArray *QuestionList; Class A *arrayQuestions; } @property Class A *arrayQuestions; Then I call NSMutableArray from Class A in the Class B.m -(id)initWithStyle:(UITableViewStyle)style { if ([super initWithStyle:style] != nil) { //Make array arrayQuestions = [[Class A alloc]init]; QuestionList = arrayQuestions.QuestionsList; Right after this I Log the NSMutableArray to view values and check that they are there and it returns NIL. //Log test NSLog(@"QuestionList init method: %@",QuestionList); Info about Class B- Class B is a UIPopOverController for Class A, Class B has one View which holds a UITableView which I have to populate the results of Class A's NSMutableArray. Why is the NsMutableArray coming back as NIL? Ultimately would like some help figuring it out as well, it seems to really have me confused. Help is greatly appreciated!!

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• NRPE and the $USER1$ variable

  - by timbrigham

  I have NRPE daemons running on all of my remote Linux boxes. I have a couple configurations in place and I'm trying to standardize the paths in my nrpe.cfg. The changes are deployed via Puppet. I would like to use the following syntax: command[mycommand]=$USER1$/check_tcp .. etc. The $USER1$ variable is not available in my NRPE setup. I could write Puppet templates for all the variants but I would much prefer to manage this through a native method. Is there anything available to do so? If not does anyone have a sample Puppet config that will address this?

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• How to temporarily stop web pages intercepting a right-click?

  - by callum

  Some websites like Google Drive intercept right-clicks and provide their own context menu. This is usually what I want, but sometimes I still want to do a normal, native browser right-click. Is there any modifier key or something like that to make it so a right-click doesn't trigger a click event on the web page, so it can't show it's context menu? I want to do this per-click, not by changing a setting somewhere. If there are different techniques depending on browser/OS, please list them.

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• Nested RDP and ILO/VMWare console sessions, latency and keystroke repetition

  - by ewwhite

  I'm working on a remote server installation entirely through ILO. Due to the software application and environment, my access is restricted to a Windows server that I must access through RDP. Going from that system to the target server is accomplished via HP ILO2 or ILO3. I'm trying to run a CentOS installation in an environment where I can't use a kickstart. I'm doing this via text mode, but the keystrokes are repeating randomly and it's difficult to select the proper installation options. For example: ks=http://all.yourbase.org/kickstart/ks.cfg ends up looking like: ks====httttttp://allll..yourbaseee.....org/kicksstart/ks.cccfg I'm doing this using Microsoft's native RDP client (on Mac and Windows). I've also noticed this before when running installations or doing remote work in nested sessions. Same for typing into a VMWare console in some cases. Is there a nice fix for this, or it it simply a function of the protocol(s)?

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• What's your all-time creativity problem?

  - by furtelwart

  Sometimes, you stumble with programming. Sometimes, it's a lack of creativity, sometimes, you need a new solution. But there are a lot of situations, you stick in, every time they occur. For myself, it's when I have to create the interface between model and viewer. I designed my data structure very well and drew a GUI prototype, but the missing link won't be written. What are your personal barricades in developing projects?

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• Touch Typing Software recommendations

  - by Mike

  Since the keyboard is the interface we use to the computer, I've always thought touch typing should be something I should learn, but I've always been, well, lazy is the word. So, anyone recommend any good touch typing software? It's easy enough to google, but I'ld like to hear recommendations.

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• Disable text selection in QT/WebKit GUI

  - by Adal

  I'm checking if it would be possible to implement a GUI using HTML through PyQT and WebKit. One of the problem is that using the mouse you can select the text making up the interface. Can this behaviour be disabled? Also, the mouse pointer changes to an insertion caret while over the selectable text. I would like to disable this, without disabling the hand mouse pointer which appears when over a clickable link.

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• Sparxsystems Enterprise Architect and issuses/tasks tracking system?

  - by peperg

  We (developement team 4 upto 7 people) use Sparxsystems EA for requirement analysis, modeling etc. Do you know any well-working methods to use EA and some task/issue tracking system like Redmine/Mantis/Trac ? The problem is not to duplicate functionality (there are issues/tasks/changes in Redmine and EA) but to have some user friendly interface (preffered web) to manage tasks and issues. By user-friendly I mean "my tasks" page add effort / time tracking easy "add issue" by everyone (simple bug tracking system) mail notifications

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• Is it possible to aggregate multiple email accounts into a single Outlook 2007 Inbox/.OST file?

  - by Howiecamp

  I'm using Outlook 2007 and would like to combine multiple email accounts (some are Exchange, some IMAP) into a single Inbox/.OST mail file. An example of the functionality I'm looking for is the Blackberry, where you can configure multiple email accounts and then access that mail either by the inbox for that specific account or via a single aggregated mailbox. In the single mailbox case, when you reply to a given piece of mail the Blackberry is smart enough to switch your "From" address to be that of the account where the email came in to. I'm essentially looking for this functionality in Outlook. Are there native options and/or third party plug-ins which do this?

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• Sharp flat panel scaling with Nvidia drivers

  - by Brecht Machiels

  I have a Samsung 226BW flat panel with a 1680x1050 native resolution. As my PC is rather dated (Athlon XP 2600+ and GeForce 6600 GT), I need to run more recent games (but still old) on a lower resolution. Unfortunately, scaling low resolutions to 1680x1050 results in a very blurry image (bilinear scaling). I have created a custom resolution of 840x525 in the Nvidia control panel. Technically, this resolutions allows perfect upscaling to 1680x1050 without the need for bilinear interpolation. Unfortunately, the Nvidia driver always seems to do bilinear scaling, again resulting in a blurry image. However, I seem to remember that I did obtain crisp images using this resolution in the past (before a Windows re-install). Maybe only some driver versions support integer upscaling without bilinear filtering? Or perhaps there are other solutions?

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• Simple Android Binary Text Clock

  - by Hristo

  Hello, I want to create a simple android binary clock but my application crashes. I use 6 textview fields: 3 for the decimal and 3 for the binary representation of the current time (HH:mm:ss). Here's the code: import java.text.SimpleDateFormat; import java.util.Calendar; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; public class Binary extends Activity implements Runnable { Thread runner; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); if (runner == null) { //start the song runner = new Thread(this); runner.start(); } } @Override public void run() { TextView hours_dec = (TextView) findViewById(R.id.hours_dec); TextView mins_dec = (TextView) findViewById(R.id.mins_dec); TextView secs_dec = (TextView) findViewById(R.id.secs_dec); TextView hours_bin = (TextView) findViewById(R.id.hours_bin); TextView mins_bin = (TextView) findViewById(R.id.mins_bin); TextView secs_bin = (TextView) findViewById(R.id.secs_bin); SimpleDateFormat hours_sdf = new SimpleDateFormat("HH"); SimpleDateFormat mins_sdf = new SimpleDateFormat("mm"); SimpleDateFormat secs_sdf = new SimpleDateFormat("ss"); Calendar cal = Calendar.getInstance(); while (runner != null) { WaitAMoment(); cal.getTime(); hours_dec.setText(hours_sdf.format(cal.getTime())); mins_dec.setText(mins_sdf.format(cal.getTime())); secs_dec.setText(secs_sdf.format(cal.getTime())); hours_bin.setText(String.valueOf(Integer.toBinaryString(Integer.parseInt((String) hours_dec.getText())))); mins_bin.setText(String.valueOf(Integer.toBinaryString(Integer.parseInt((String) mins_dec.getText())))); secs_bin.setText(String.valueOf(Integer.toBinaryString(Integer.parseInt((String) secs_dec.getText())))); } } protected void WaitAMoment() { try { Thread.sleep(100); } catch (InterruptedException e) { }; } }`

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• Custom resolution - Windows 7 - no drivers

  - by Vytautas Butkus

  I'm having some problems with my VGA card. When I enable my VGA drivers and boot windows up they crash and I get message that the problem occured with atimdag.sys drivers or smth like that. I'm gettin BSOD all the time, unless I go to control panel and I disable drivers manually. I can live with disabled drivers just fine(I'm already used to it in quite some time) but the annoying problem is my display resolution. I can not set my res to anything higher than 1024x768. I was wondering if it's possible to change resolution to my native displays resolution without drivers? I've been trying to find something that would work w/o drivers, but with no luck(I've found many of solutions how to do it with working drivers, but as you know I can not enable my drivers). So please, maybe someone could help me and tell me how to set custom resolution?

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• How to compare speed of graphics cards in Windows desktop environment?

  - by Al Kepp

  I use Windows 7 and Intel Core i3 CPU with integrated graphics. My problem is that it eats valuable system RAM for display. I can replace it with an old PCIe Radeon X700, so all system RAM will be usable for applications. The question is if an old Radeon X700 is comparable in W7 desktop speed to a new integrated i3 graphics. Are there any test programs which compare the speed of graphic cards in Windows 7 desktop environment (i.e. no Direct3D games, just Windows desktop)? (According to Tomshardware, Radeon X700 is probably even faster than Core i3 in 3D. But there are no native WDDM 1.1 W7 drivers for X700, only WDDM 1.0 Vista drivers are available.)

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