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• Net Screen manager setup

  - by Codezy

  I'm having an issue with our NSMExpress box. I'm trying to manage all our devices, range from ns5gt to ssg320m, and some of those devices have addresses assigned by dhcp from the ISP (like pppoe or dsl). The addresses are actually static but we have the register the MAC address in order to get this address. I can actually add the device in NSM except the IP that's on the untrust side isn't imported in as it's dynamic. Because of this I cannot change many options that pertian to the untrust interface as there is no IP. I've talked to JTAC on this and they didn't know if there was a way to do this or not but then they stated that Tim Hortons does this so I'm confused on how to get this working. Maybe i'm just missing something as I imagine that other people must be doing this as well. Any assistance is appreciated! Furthermore when I import a device this is the message I get: Warnings: Interface ethernet0/0 is a pppoe/dhcp/pppoa client and its ip is NOT IMPORTED because it may be dynamic.

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• @webservice inheritance java

  - by javamonkey79

  I am trying to build a java ee webservice that has a common base class, but the child classes are the actual @webservice classes (and expose the parent class methods as @webmethod's) Like this: public abstract class Parent { @WebMethod public void doSomething(){//...does stuff} } @WebService public class Child extends Parent {} I've tried (and have failed): - annotating the parent class as a webservice as well - making sure all parent methods are annotated with @WebMethod Is this possible, if so, how?

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• Can I use OAuth for a SOAP web service?

  - by Olaseni

  The standard HTTP Authentication for SOAP passed the password etc in cleartext,and I'm looking for an alternative, possibly a key based mechanism to authenticate web services in lieu of the password. OAuth is gaining a lot of popularity; would it be appropriate, and how would I implement it? Or perhaps there are other methods I should use. The project itself is relatively simple, with just a one or two methods to be exposed, but security is of the utmost importance.

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• Making a COM dll to be invoked from c#, HRESULT error handling?

  - by Daniel

  I'm making a COM interface that c# will be using, however i am wondering how i am to check for errors and exception handling on the c# end as at the moment i am just returning a HRESTULT or bool for most methods. But several things can go wrong in some of these methods and returning a E_FAIL just doesn't cut it. What can i do in order to return more information? Can i make a HRESULT of my own?

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• Save static version of a webpage to be available offline

  - by Tal Weiss

  Is there a way to save a webpage as static HTML, available for offline viewing, editing etc.? I want to remove all javascript files. Leave only HTML, CSS and images. For example, if this web page has a Facebook Like button, I want the image of the button to be part of the HTML as a regular image (and not be loaded as some Javascript code runs after I load the page). I'm trying to prepare a webpage for an offline demo. When I use the standard "save as HTML complete" like tools, all the Javascript is saved as well, and when viewed offline, all the dynamic content is blanks. Note- I don't expect the dynamic content to work, of course, with no Javascript. I just want the web page to LOOK as though it was just loaded from the interwebs. Thanks, Tal.

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• Best way to organize MATLAB classes?

  - by jjkparker

  MATLAB has two ways of organizing classes: @-directories: @ClassName\ ClassName.m Method1.m Method2.m Single files: ClassName.m: classdef ClassName methods % all methods included here end end The first style existed before the new classdef syntax, but seems to be a more structured way of doing things. The second style (everything in a single file) is new. Which method do you use, and why?

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• When to use Genetic Algorithms and when to use Neural Networks?

  - by Neil N

  Is there a rule of thumb or set of examples to determine when Genetic Algorithms versus when to use Neural Networks to solve a problem? I know there are cases in which you can have both methods mixed, but I am looking for a high level reasoning between the two methods. EDIT: XKCD has now touched on genetic algo's:

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• Choosing my first Domain Registrar?

  - by user36914

  This will be the first domain i've ever registered. So i'm at a loss what to look for. I definitely don't want to go with GoDaddy. Here are my requirements: Must have unlimited email forwards for my domain Easy to transfer away if i choose. Must not be one of those shady registrars that will try to auction your domain at the end. Ability to create sub domains Domain Registration is Private I would like a domain registrar that would let me use my dynamic ip of my ISP (Cable) if i want to. So hopefully they would have some type program that would detect IP changes and update accordingly So i've looked at a variety of registrars so far. The three left were really NameCheap, DreamHost, & DomainMonster. I have heard good things about DreamHost but i think its off the list because they don't give you any information about the features you get when you register your domain with them. They have a "Whats included" button the page but it mainly list the features with hosting not registration. DomainMonster looks pretty cool but i don't see anything about subdomains. Also i would assume they don't have a system for dynamic ip address updating. So you would have to constantly check that your ip of your ISP has changed or not and update it manually. NameCheap also looks nice. There are two things i really like about them. Right on their feature page they list "Free Dynamic DNS With Client" which is pretty cool. They also have a free SSL certificate for the first year. Haven't messed a lot with certificates but this would definitely be something i would use. Only minus i can see is you only get free private whois for the first year. After that its $2.99 which isn't that big of a deal. I'm leaning towards NameCheap now. Is this a good choice. Is there anything else i should be looking at?

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• SOAP web service evolution

  - by Thilo

  Are there any guidelines/tutorials as to how to handle the evolution of a SOAP web service? I can see that changing existing methods or types would probably not work, but can I just add new methods, complex types, enumeration values without breaking existing clients?

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• Delegates and ParamArray - Workaround Suggestions?

  - by M.A. Hanin

  Some predefined methods contain a ParamArray in their signature. Delegates, however, cannot contain a ParamArray in their signature. Main question: Assume you wish to create a delegation mechanism for a specific method which requires a ParamArray. How would you work around this constraint? "Bonus" question: Assume you wish to create a generalized delegation mechanism for all methods which require ParamArray, how would you do that?

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• PHP-FPM Pool, Child Processes and Memory Consumption

  - by Jhilke Dai

  In my PHP-FPM configuration I have 3 Pools, the eg: Config is: ;;;;;;;;;;;;;;;;;;;;;;; ; Pool 1 ; ;;;;;;;;;;;;;;;;;;;;;;; [www1] user = www group = www listen = /tmp/php-fpm1.sock; listen.backlog = -1 listen.owner = www listen.group = www listen.mode = 0666 pm = dynamic pm.max_children = 40 pm.start_servers = 6 pm.min_spare_servers = 6 pm.max_spare_servers = 12 pm.max_requests = 250 slowlog = /var/log/php/$pool.log.slow request_slowlog_timeout = 5s request_terminate_timeout = 120s rlimit_files = 131072 ;;;;;;;;;;;;;;;;;;;;;;; ; Pool 2 ; ;;;;;;;;;;;;;;;;;;;;;;; [www2] user = www group = www listen = /tmp/php-fpm2.sock; listen.backlog = -1 listen.owner = www listen.group = www listen.mode = 0666 pm = dynamic pm.max_children = 40 pm.start_servers = 6 pm.min_spare_servers = 6 pm.max_spare_servers = 12 pm.max_requests = 250 slowlog = /var/log/php/$pool.log.slow request_slowlog_timeout = 5s request_terminate_timeout = 120s rlimit_files = 131072 ;;;;;;;;;;;;;;;;;;;;;;; ; Pool 3 ; ;;;;;;;;;;;;;;;;;;;;;;; [www3] user = www group = www listen = /tmp/php-fpm3.sock; listen.backlog = -1 listen.owner = www listen.group = www listen.mode = 0666 pm = dynamic pm.max_children = 40 pm.start_servers = 6 pm.min_spare_servers = 6 pm.max_spare_servers = 12 pm.max_requests = 250 slowlog = /var/log/php/$pool.log.slow request_slowlog_timeout = 5s request_terminate_timeout = 120s rlimit_files = 131072 I calculated the pm.max_children processes according to some example calculations on the web like 40 x 40 Mb = 1600 Mb. I have separated 4 GB of RAM for PHP, now according to the calculations 40 Child Processes via one socket, and I have total of 3 sockets in my Nginx and FPM configuration. My doubt is about the amount of memory consumption by those child processes. I tried to create high load in the server via httperf hog and siege but I could not calculate the accurate memory usage by all the PHP processes (other processes like MySQL and Nginx were also running). And all the sockets were in use, So, I seek guidance from anyone who have done this before or know how exactly the pm.max_children in PHP Works. Since I have 3 Pools/sockets with 40 child processes does that count to 3 x 40 x 40 Mb of Memory usage ? or it is just like 40 Max. Child processes sharing 3 sockets (and the total memory usage is just 40 x 40 Mb) ?

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• One entityManger finds entity , the other does not.

  - by Pitelk

  Hi all, I have a very strange behavior in my program. I have 2 classes (class LogIn and CreateGame) where i have injected an EntityManager in each using the annotation @PersistenceContext(unitName="myUnitPU") EntityManager entitymanger; In some point i remove an object called "user" from the database using entitymanger.remove(user) from a method in LogIn class. The business logic is that a user can host and join games ( in the same time) so removing the user all the entries in database about the games the user has created are removed and all the entries showing in which games the user has joined are removed also. After that, i call another function which checks if the user exists using a method in the LogIn class entitymanager.find(user) which surprisingly enough, finds the user. After that I call a method in CreateGame class which tries to find the user by using again entitymanger.find(user) the entitymanger in that class fails to find the user (which is the expected result as the user is removed and it's not in the database) So the question is : Why the entitymanager in one class finds the user (which is wrong) where the other doesn't find it? Does anyone has ever the same problem? PS : This "bug" occurs when the user has hosted a game which is joined by another user (lets call him Buser) and the Buser has made a game which is joined by the current user. GAME | HOST | CLIENTS game1 | user | userB game2 | userB | user where in this case by removing the user, the game1 is deleted and the user is removed from game2 so the result is GAME | HOST | CLIENTS game2 | userB | PS2 : The Beans are EJB3.0. The methods are called from a delegate class. The beans in the delegate class are instantiated using the InitialContext.lookup() method. Note that for logging in ,creating , joining games the appropriate delegate class calls the correspondent EJB which does the transactions. In the case of logOut, the delegate calls an EJB to logout the user but becuase other stuff must be done (as said above) this EJB calls other EJB (again using lookup() ) which has methods like removegame(), removeUserFromGame() etc. After those methods are executed the user is then logged out. Maybe it has something to do with the fact the the first entity manager is called by a delegate but the second from inside an EJb and thats why the one entitymanger can see the non-existent user while the other cannot? Also all the methods have TRANSACTIONTYPE.REQUIRED Thank you in advance

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• Access modifiers in Object-Oriented Programming

  - by Imran

  I don't understand Access Modifiers in OOP. Why do we make for example in Java instance variables private and then use public getter and setter methods to access them? I mean what's the reasoning/logic behind this? You still get to the instance variable but why use setter and getter methods when you can just make your variables public? please excuse my ignorance as I am simply trying to understand why? Thank you in advance. ;-)

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• How do I extend a python module? (python-twitter)

  - by user319045

  What are the best practices for extending a python module -- in this case I want to extend python-twitter by adding new methods to the base API class. I've looked at tweepy, and I like that as well, I just find python-twitter easier to understand and extend with the functionality I want. I have the methods written already, I'm just trying to figure out the best way to add them into the module, without changing the core.

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• Cisco IOS ACL types

  - by cjavapro

  The built in command help list displays access list types based on which range. router1(config)#access-list ? <1-99> IP standard access list <100-199> IP extended access list <1100-1199> Extended 48-bit MAC address access list <1300-1999> IP standard access list (expanded range) <200-299> Protocol type-code access list <2000-2699> IP extended access list (expanded range) <700-799> 48-bit MAC address access list dynamic-extended Extend the dynamic ACL absolute timer rate-limit Simple rate-limit specific access list router1(config)# What are each of the types? Can multiple types of ACLs be applied to a given interface?

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• Java: interface / abstract classes / abstract method

  - by Registered User

  Please help :/ In Java you can create an abstract class that contains only abstract methods. On the other hand, you can create an interface that declares the same methods. So can you use abstract classes instead of interfaces? Cheers!

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• Correct order of overrides for a composite control based on an abstract one

  - by mattdwen

  I'm writing a set of C# composite web server controls for displaying dialog boxes. I want to have one abstract class which handles the basic layout and things like titles of the control, then have a set of derived ones which render child controls at a specific point. I forsee three distincts methods: renderOpeningHtml handled by the abstract class, renderCustomControls as done by the derived class, and renderClosingHtml by the abstract class again, except I can't figure the life cycle of a CompositeControl and what methods to use when.

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• "This computer has dynamically assigned IP addresses" error when installing Active Directory Domain Controller

  - by smhnaji

  This is a working Windows Server 2008 that I should install Active Directory on it. I found http://www.howtogeek.com/99323/ and followed the steps. After Additional Domain Controller Options, I'm asked the question "This computer has dynamically assigned IP addresses". As I see, the message states that Dynamic IP addressing has been used for the server, while this is wrong. When I come to Network And Sharing Center, and click on Local Area Connections - Properties - Internet Protocol Version 4 (TCP/IPv4) - Properties, I see that the main IP address (as well as DNS Server) and also all other IP addresses are assigned statically. So it should be OK. I cannot believe any server using dynamic IP(s)! Note: No IPv6 has been set for the server. Please tell me why the error is given and which of the options available, should I choose? Note that it's a production server and is working with many users in WORKGROUP. No change should be affected nor to the IPs, neither to users connecting to the server.

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• How should Application.Run() be called for the main presenter of a MVP WinForms app?

  - by Mr Roys

  I'm learning to apply MVP to a simple WinForms app (only one form) in C# and encountered an issue while creating the main presenter in static void Main(). Is it a good idea to expose a View from the Presenter in order to supply it as a parameter to Application.Run()? Currently, I've implemented an approach which allows me to not expose the View as a property of Presenter: static void Main() { IView view = new View(); Model model = new Model(); Presenter presenter = new Presenter(view, model); presenter.Start(); Application.Run(); } The Start and Stop methods in Presenter: public void Start() { view.Start(); } public void Stop() { view.Stop(); } The Start and Stop methods in View (a Windows Form): public void Start() { this.Show(); } public void Stop() { // only way to close a message loop called // via Application.Run(); without a Form parameter Application.Exit(); } The Application.Exit() call seems like an inelegant way to close the Form (and the application). The other alternative would be to expose the View as a public property of the Presenter in order to call Application.Run() with a Form parameter. static void Main() { IView view = new View(); Model model = new Model(); Presenter presenter = new Presenter(view, model); Application.Run(presenter.View); } The Start and Stop methods in Presenter remain the same. An additional property is added to return the View as a Form: public void Start() { view.Start(); } public void Stop() { view.Stop(); } // New property to return view as a Form for Application.Run(Form form); public System.Windows.Form View { get { return view as Form(); } } The Start and Stop methods in View (a Windows Form) would then be written as below: public void Start() { this.Show(); } public void Stop() { this.Close(); } Could anyone suggest which is the better approach and why? Or there even better ways to resolve this issue?

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• COM Dual Interfaces

  - by Tony

  A dual interface in COM is one that is able to be accessed via a DispInterface or via VTable methods. Now can someone tell me what is exactly what the difference is between the two methods? I thought that a VTable is a virtual table which holds the pointers to the different functions when implementing a class hierarchy which has virtual functions that can be overridden in child classes. However I do not see how this is related to a dual interface in COM?

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• Monitoring System for the cloud?

  - by Maxim Veksler

  I need a monitoring system, much like ganglia / nagios that is build for the cloud. I need it to support : Adding / removing nodes dynamically. (Node shuts down, dose not imply node failure...) Dynamic node based categorization, meaning node can identify them self as being part of group X (ganglia gets this almost right, but lacks the dynamic part...) Does not require multicast support (generally not allowed in cloud based setups) Plugins for recent cool stuff such as Hadoop, Cassandra, Mongo would be cool. More features include: External API, web interface and co. I've looked at Ganglia, munin and they both seem be almost there (but not exactly). I would also go for reasonably priced Software as Service solution. I'm currently doing research, so Suggestions are highly appreciated. Thank you, Maxim

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• Ruby/IRB self help

  - by mozillalives

  I'm new to Ruby - what tricks can I use to help me find documentation on a object I'm working with? Normally I just do a_var.class or a_var.methods and try to guess what I need or search the web for documentation. Are there other methods or modules that might help?

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• Performing your own runtime analysis of your code in C#

  - by Matt

  I have written a large C# app with many methods in many classes. I'm trying to keep a log of what gets called and how often during my development. (I keep a record in a DB) Every method is padded with the following calls: void myMethod() { log(entering,args[]); log(exiting,args[]); } Since I want to do this for all my methods, is there a better way to do this then having to replicate those lines of code in every method?

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• When using delegates, need better way to do sequential processing

  - by Padawan

  I have a class WebServiceCaller that uses NSURLConnection to make asynchronous calls to a web service. The class provides a delegate property and when the web service call is done, it calls a method webServiceDoneWithXXX on the delegate. There are several web service methods that can be called, two of which are say GetSummary and GetList. The classes that use WebServiceCaller initially need both the summary and list so they are written like this: -(void)getAllData { [webServiceCaller getSummary]; } -(void)webServiceDoneWithGetSummary { [webServiceCaller getList]; } -(void)webServiceDoneWithGetList { ... } This works but there are at least two problems: The calls are split across delegate methods so it's hard to see the sequence at a glance but more important it's hard to control or modify the sequence. Sometimes I want to call just GetSummary and not also GetList so I would then have to use an ugly class-level state variable that tells webServiceDoneWithGetSummary whether to call GetList or not. Assume that GetList cannot be done until GetSummary completes and returns some data which is used as input to GetList. Is there a better way to handle this and still get asynchronous calls? Update based on Matt Long's answer: Using notifications instead of a delegate, it looks like I can solve problem #2 by setting a different selector depending on whether I want the full sequence (GetSummary+GetList) or just GetSummary. Both observers would still use the same notification name when calling GetSummary. I would have to write two separate methods to handle GetSummaryDone instead of using a single delegate method (where I would have needed some class-level variable to tell whether to then call GetList). -(void)getAllData { [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getSummaryDoneAndCallGetList:)                  name:kGetSummaryDidFinish object:nil];     [webServiceCaller getSummary]; } -(void)getSummaryDoneAndCallGetList { [NSNotificationCenter removeObserver] //process summary data [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getListDone:)                  name:kGetListDidFinish object:nil];     [webServiceCaller getList]; } -(void)getListDone { [NSNotificationCenter removeObserver] //process list data } -(void)getJustSummaryData { [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getJustSummaryDone:) //different selector but                  name:kGetSummaryDidFinish object:nil]; //same notification name     [webServiceCaller getSummary]; } -(void)getJustSummaryDone { [NSNotificationCenter removeObserver] //process summary data } I haven't actually tried this yet. It seems better than having state variables and if-then statements but you have to write more methods. I still don't see a solution for problem 1.

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• Check if NSURL is Local File

  - by golfromeo

  This is a pretty simple question- how can I check if a NSURL is linking to a local file? I know, RTFM, but I checked the documentation and I don't seem to see any methods related to this. The only methods I did find were -isFileReferenceURL and -isFileURL, but I think these only check if the URL directly links to a file. note: I'm making an iPhone app, so by "local file" I mean a .html file stored in the project's resources. Thanks for any help in advance.

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