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• A better way to organize your Silverlight Code Snippets.

  - by mbcrump

  I hate re-writing code. I also hate it when I find a great code snippet on the web and forget to bookmark it or it gets lost in my endless sea of bookmarks. So what do you do to get around this? This is the question that I was asking myself at the end of 2010. How can I get my Silverlight code organized? My requirements for a snippet manager were: Needs to be FREE. An easy way to view XAML/C# code behind together in one “view”. I wanted the ability to store the code snippets in cloud in case my HDD dies. Searchable Keywords to quickly find code snippets. I started looking for a snippet manager that would allow me to do just that and finally found Snippet Manager. Before going any further, I think that one of the most important things to note here is that this software supports 37 languages. It’s not just for Silverlight developers nor C# only guys. The software supports Java, SQL and even COBOL.   Below is a screenshot of the Snippet Manager that shows my Silverlight code snippet. You will notice that I have highlighted two sections. The top part is my XAML and the bottom is my C# code behind. I’ve included a sample below of my code snippets so that you can get an idea of how I organized it. Another thing that’s great about this software is that it supports plain text. I added some connection strings in the TEXT section below.  Once you have finished adding your code snippets, you can store them in the cloud. I created a FTP directory called “snippets” on my FTP Server and hit the upload button once I am finished adding my new codes snippets. This will allow me to use the code snippets on another computer with this application on my USB Key. See screenshots below: Enter your FTP credentials below: Hit the Uploads button on the Toolbar: Login in to your FTP Server and verify the following files are now on the FTP Server: Another great feature of the Snippet Manager is that you can also integrate this into VS2010 by clicking Tools –> External Tools: And setting up your External Screen to point to the Executable: You can now launch it by going to Tools –> Snippet Manager. If you want you could also a shortcut to launch the program with HotKeys. As you can see, this is a nice little program that includes everything needed to organize your code snippets very clean. I didn’t go over every feature but this is something that you might want to download and give it a shot.  Subscribe to my feed CodeProject

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• JGridView

  - by Geertjan

  JGrid was announced last week so I wanted to integrate it into a NetBeans Platform app. I.e., I'd like to use Nodes instead of the DefaultListModel that is supported natively, so that I can integrate with the Properties Window, for example: Here's how: import de.jgrid.JGrid; import java.beans.PropertyVetoException; import javax.swing.DefaultListModel; import javax.swing.JScrollPane; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; import org.book.domain.Book; import org.openide.explorer.ExplorerManager; import org.openide.nodes.Node; import org.openide.util.Exceptions; public class JGridView extends JScrollPane { @Override public void addNotify() { super.addNotify(); final ExplorerManager em = ExplorerManager.find(this); if (em != null) { final JGrid grid = new JGrid(); Node root = em.getRootContext(); final Node[] nodes = root.getChildren().getNodes(); final Book[] books = new Book[nodes.length]; for (int i = 0; i < nodes.length; i++) { Node node = nodes[i]; books[i] = node.getLookup().lookup(Book.class); } grid.getCellRendererManager().setDefaultRenderer(new OpenLibraryGridRenderer()); grid.setModel(new DefaultListModel() { @Override public int getSize() { return books.length; } @Override public Object getElementAt(int i) { return books[i]; } }); grid.setUI(new BookshelfUI()); grid.getSelectionModel().addListSelectionListener(new ListSelectionListener() { @Override public void valueChanged(ListSelectionEvent e) { //Somehow compare the selected item //with the list of books and find a matching book: int selectedIndex = grid.getSelectedIndex(); for (int i = 0; i < nodes.length; i++) { String nodeName = books[i].getTitel(); if (String.valueOf(selectedIndex).equals(nodeName)) { try { em.setSelectedNodes(new Node[]{nodes[i]}); } catch (PropertyVetoException ex) { Exceptions.printStackTrace(ex); } } } } }); setViewportView(grid); } } } Above, you see references to OpenLibraryGridRenderer and BookshelfUI, both of which are part of the "JGrid-Bookshelf" sample in the JGrid download. The above is specific for Book objects, i.e., that's one of the samples that comes with the JGrid download. I need to make the above more general, so that any kind of object can be handled without requiring changes to the JGridView. Once you have the above, it's easy to integrate it into a TopComponent, just like any other NetBeans explorer view.

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• Protobuf design patterns

  - by Monster Truck

  I am evaluating Google Protocol Buffers for a Java based service (but am expecting language agnostic patterns). I have two questions: The first is a broad general question: What patterns are we seeing people use? Said patterns being related to class organization (e.g., messages per .proto file, packaging, and distribution) and message definition (e.g., repeated fields vs. repeated encapsulated fields*) etc. There is very little information of this sort on the Google Protobuf Help pages and public blogs while there is a ton of information for established protocols such as XML. I also have specific questions over the following two different patterns: Represent messages in .proto files, package them as a separate jar, and ship it to target consumers of the service --which is basically the default approach I guess. Do the same but also include hand crafted wrappers (not sub-classes!) around each message that implement a contract supporting at least these two methods (T is the wrapper class, V is the message class (using generics but simplified syntax for brevity): public V toProtobufMessage() { V.Builder builder = V.newBuilder(); for (Item item : getItemList()) { builder.addItem(item); } return builder.setAmountPayable(getAmountPayable()). setShippingAddress(getShippingAddress()). build(); } public static T fromProtobufMessage(V message_) { return new T(message_.getShippingAddress(), message_.getItemList(), message_.getAmountPayable()); } One advantage I see with (2) is that I can hide away the complexities introduced by V.newBuilder().addField().build() and add some meaningful methods such as isOpenForTrade() or isAddressInFreeDeliveryZone() etc. in my wrappers. The second advantage I see with (2) is that my clients deal with immutable objects (something I can enforce in the wrapper class). One disadvantage I see with (2) is that I duplicate code and have to sync up my wrapper classes with .proto files. Does anyone have better techniques or further critiques on any of the two approaches? *By encapsulating a repeated field I mean messages such as this one: message ItemList { repeated item = 1; } message CustomerInvoice { required ShippingAddress address = 1; required ItemList = 2; required double amountPayable = 3; } instead of messages such as this one: message CustomerInvoice { required ShippingAddress address = 1; repeated Item item = 2; required double amountPayable = 3; } I like the latter but am happy to hear arguments against it.

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• Recommended learning path?

  - by stairmast0r

  First, my current standing: I know C++ at an.. advanced beginner level? I've gone through a book, I know the syntax well enough, I know a fair amount of standard library functions, and I've programmed some simple console stuff with it. I'd probably be able to program more with it if I knew how to structure a program, but I just can't seem to wrap my head around the whole concept of structuring something remotely complex. I've messed around with Java for a day or two, and the syntax was extremely easy to get the hang of, except that I didn't really know any functions. I'm plenty willing to learn, and to work hard to do so, but I don't really know where to go from here. Now, at the risk of sounding cliche, what I'd like to become is someone like the great three of id; Carmack, Romero, and Abrash. To be considered a genius. I believe anything can be learned, and nothing mentally limits anyone except lack of desire to learn. But I don't know how to learn this. They learned by doing, and making do with what resources they had. On the other hand, I have access to almost any books I want, access to the internet, and access to a more than capable computer and software. Should I learn more languages? Assembly? LISP? BASIC? Haskell? Should I dive straight into advanced topics like OpenGL? Or should I wait until I feel I've come closer to mastering the simpler things, like console programs, first? Should I follow tutorials? Should I follow books? Should I just dive into writing something and follow a reference manual as I go? What order should I do all this in? How should I do it? I want to completely master this; to be considered a genius. The most perfect career I can imagine is to start the next id. I have the drive to do it, I just don't know where to begin...

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• The new direction of the gaming industry

  - by raccoon_tim

  Just recently I read a great blog post by David Darling, the founder of Codemasters: http://www.develop-online.net/blog/347/Jurassic-consoles-could-become-extinct. In the blog post he talks about how traditional retail games are experiencing a downfall thanks to the increasing popularity of digital distribution. I personally think of retail games as being relics of the past. It does not really make much sense to still keep distributing boxed games when the same game can be elegantly downloaded and updated over the air through a digital distribution channel. The world is not all rainbows, however. One big issue with mixing digital distribution with boxed retail games is that resellers will not condone you selling your game for 10€ digitally while their selling the same game for 70€. The only way to get around this issue is to move to full digital distribution. This has the added benefit of minimizing piracy as the game can be tightly bound to the service you downloaded the game from. Many players are, however, complaining about not being able to play the games offline. Having games tightly bound to the internet is a problem when games are bought from a retailer as we tend to expect that once we have the product we can use it anywhere because we physically own it. The truth is that we don’t actually own the product. Instead, the typical EULA actually states that we only have a license to use the product. We’re not, for instance, allowed to disassemble the product, which the owner is indeed permitted to do. Digital distribution allows us to provide games as services, instead of selling them as standalone products. This means that for a service to work you have to be connected to the internet but you still have the same rights to use the product. It’s really straightforward; if you downloaded a client from the internet you are expected to have an internet connection so you’re able to connect to the server. A game distributed digitally that is built using a client-server architecture has the added benefit of allowing you to play anywhere as long as you have the client installed and you are able to log in with your user information. Your save games can be backed up and your game can continue anywhere. Another development we’re seeing in the gaming industry is the increasing popularity of free-to-play games. These are games that let you play for free but allow you to boost your gaming experience with real world money. The nature of these games is that players are constantly rewarded with new content and the game can evolve according to their way of playing and their wishes can be incorporated into the product. Free-to-play games can quickly gain a large player basis and monetization is done by providing players valuable things to buy making their gaming experience more fun. I am personally very excited about free-to-play games as it’s possible to start building the game together with your players and there is no need to work on the game for 5 years from start to finish and only then see if it’s actually something the players like. This is a typical problem with big movie-like retail games and recent news about Radical Entertainment practically closing its doors paints a clear picture of what can happen when the risk does not pay off: http://news.teamxbox.com/xbox/25874/Prototype-Developer-Radical-Entertainment-Closes/.

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• Best way to process a queue in C# (PDF treatment)

  - by Bartdude

  First of all let me expose what I would like to do : I already dispose of a long-time running webapp developed in ASP.NET (C#) 2.0. In this app, users can upload standard PDF files (text+pics). The app is running in production on a Windows Server 2003 and has a dedicated database server (SQL server 2008) also running Windows Server 2003. I myself am a quite experienced web developer, but never actually programmed anything non-web (or at least nothing serious). I plan on adding a functionality to the webapp for which I would need a jpg snapshot of each page of the PDF. Creating these "thumbnails" isn't the big deal as such, I already do it inside my webapp using ghostscript. I've only done it on 1 page documents for now though, and the new functionality will need to process bigger documents. In order for this process to be transparent aswell for the admins as the final users, I would like to implement some kind of queue to delay the processing of the thumbnails. There again, no problem to create the queue, it will consist of records in a table, with enough info to find the pdf document back. Then I will need to process this queue, and that's were my interrogations start. Obviously the best solution to process it isn't an ASP script or so, so I will have to get out of my known environment. No problem, but I have no idea which direction to go. Therefore, a few questions : What should I develop ? I presumably need something that is "standby" on the server, runs when needed, then returns to idle state until further notice.Should I be looking into Windows service ? Is there another more appropriate type of project ? Depending on the first answer, what will be the approach ? Should I have somehow SQL server "tell" the program/service/... to process the queue, or should I have that program/service/... periodically check the state of the queue and treat new items. In both case, which functionality can I use ? we're not talking about hundreds of PDF a day (max 50 maybe), I can totally afford to treat the queue 1 item at a time. Can you confirm I don't have to look much further on threads and so ? (I found a lot of answers talking about threads in queue treatment, but it looks quite overkill for my needs) Maybe linked to the previous question : what about concurrent call to the program, whatever it is ? Let's suppose it is currently running, and a new record comes in the queue, what should be the behaviour ? I don't need much detailed answers and would already be happy with answers like "You can do the processing with a service, and yes it's possible to have sqlserver on machine A trigger a service start on machine B" or "You have to develop xxx and then use the scheduler to run it every xxx minutes". I don't mind reading articles and so, but I can hardly afford to spend too much time learning stuff to finally realize I went the wrong way for this project, so basically I'm trying to narrow down the scope of matters I need to investigate. Thanks for reading me, I hope I'll find some helping hands on here :-)

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• Did I choose proper career path? [closed]

  - by Liston Catch

  I am a C# Junior. My company has it's own enterprise documents-flow system written, my job along with 10 other programmers is to write modules/add-ons for it. I am totally bored of this job, I dont like Microsoft's technologies stack (dont hate me here, just subjective), but it's plain boring, enterprise is boring (subjective again, everyone's tastes differ), days on this work last long and I am tired of it. In short - I dont like my job. In my spare time I am doing PHP-development and I totally like it. I am also doing web-design, so I am LAMP-kind of guy who loves his Ubuntu and does design aswell. I know that most programmers don't do design themselves, so some person is either all about design or all about coding, but I enjoy both and do both. I often get interesting sites orders, I love to make whole websites with all the design, I love the feeling of site completeness, I enjoy talking with customers. I like that PHP is simple and skill cap is lower than one of java, meaning I can become expert in it after some years. But C# (and J2EE also) pay more, and I am doing really good in C#. But I dont like it. I can go for J2EE, platform itself seems more fun to me rather than .NET, but EE development is still boring to me. But it seems higher payed, easier to find job (since PHP is too common for its easiness. But if you are expert in something it doesnt matter, right? Just a higher skillcap.) Question: I want to go on with freelance. I want to have an opportunity to start my own startup in web. Actually I have a browser-game already written by myself, it earns me around 500$ per month which I am really proud of since I am 21 only and still noob in coding. I want to find part-time PHP job. 3 days per week so I can get some stable income, I can work in team and learn from them, social factor matters aswell as ensurance and diversity. I also want my total income (freelance + part-time job + own startup maybe)to be not too much less than one I have working in EE development sector. Maximum of 25% lower, but not more. Is it all possible if I stick with web-development (LAMP + HTML/CSS/JS/Jquery/AJAX)? Or is it easier to reach my goals with EE development?

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• A programmer who doesn't get to program - where to turn? [closed]

  - by Just an Anon

  I'm in my mid 20's, and have been working as a full time programmer / developer for the last ~6 years, with several years of part-time freelancing before this, and three straight years of freelancing in the middle of this short career. I work mostly with PHP and the Drupal framework. By and large, I focus on programming custom pieces of functionality; these, of course, vary greatly from project to project. I've got years of solid experience with OOP (have done some Java & C# years ago, too) including intensive experience with front-end development, and even some design work. I've lead small teams (2-4 people) of developers. And of course, given the large amount of freelancing, I've got decent project- & client-management skills. My problem is staying motivated at any place of employment. In the time mentioned I've worked (full-time) at six local companies. The longest I've stayed at any company was just over a year. I find that I'll get hired and be very excited and motivated for the first few months, but the work quickly gets "stale." By that I mean that the interesting components (ie. the programming) get done, and the rest of the work turns into boring cleanup (move a button, add text, change colours, add a field). I don't get challenged, and I don't feel like I'm learning anything new. This happens repeatedly time and time again, and I always end up leaving for either a new opportunity, or to freelance. I'm wondering if perhaps I've painted myself into a corner with the rather niche work market (although with very high demand and good compensation) and need to explore other career choices. Another possibility is that I may be choosing the wrong places of employment, mostly small agencies, and need to look into working for a larger, more established firm. I find programming, writing code, and architecting solutions very rewarding. When I'm working on an interesting problem I lose all sense of time and 14-16 hours can fly by like minutes. I get the same exciting feeling when I'm doing high-level planning of a complex system, breaking up the work and figuring out how everything will tie-in together. I absolutely hate doing small, "stupid" changes that pose no challenge, yet seem to make up more and more of my work. I want to find a workplace where I will get to work on such tasks, be challenged, and improve in all areas of product development. This maybe a programming job, management, architecture of desktop apps, or may be managing a taco stand on a beach in Mexico - I don't know, and I need some advice and real-world feedback. What are some job areas worth exploring? The requirements are fairly simple: working with computers interacting with others challenging decent pay (I'm making just short of 90k / year with a month of vacation & some benefits, and would like to stay in this range, but am willing to take a temporary cut in pay for a more interesting position) Any advice would be much appreciated!

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• Oracle?1????!?????????????????

  - by Yuichi Hayashi

  ????Oracle????????????????????????????????????????! ????PDF?????WMV?/?MP4? 1. ??????????????:?????????????????????????????! ·???!Oracle Database????!? ?PDF? ?WMV? ?MP4? 2. Oracle Database??????:Oracle Database ????????????????????! ·???????!? Oracle?? ~???~ ?PDF? ?WMV? ?MP4? ·???????!? Oracle?? ~????????~ ?PDF? ?WMV? ?MP4? 3. Oracle Database ??????:????????????????????????????! ·??????????????!??????????-??? ?PDF? ?WMV? ?MP4? 4. Oracle Database ?????:???????????????????????! ·???????!???????·?????? ?PDF? ?WMV? ?MP4? ·???????!????????·???????? ?PDF? ?WMV? ?MP4? 5. ORACLE MASTER???????:?????????????????????! ·ORACLE MASTER Bronze?Bronze DBA11g? ?PDF? ?WMV? ?MP4? ·ORACLE MASTER Bronze?11g SQL???? ?PDF? ?WMV? ?MP4? ??? ¦????????????????????????/????????? ·???????!?????·???????ABC ?PDF? ?WMV? ?MP4? ¦??/OS/Application Server?????????? ·Java???! ?PDF? ?WMV? ?MP4? ·??????Oracle?????????Linux?? ?PDF? ?WMV? ?MP4? ·Solaris 10 ?? ~????Solaris???~ ?PDF? ?WMV? ?MP4? ·Oracle????????WebLogic ?? ?PDF? ?WMV? ?MP4?

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• Oracle?1????!?????????????????

  - by hideki ito

  ????Oracle????????????????????????????????????????! 1. ??????????????:?????????????????????????????! ·???!Oracle Database????!? ?PDF? ?WMV? ?MP4? 2. Oracle Database??????:Oracle Database ????????????????????! ·???????!? Oracle?? ~???~ ?PDF? ?WMV? ?MP4? ???????!? Oracle?? ~????????~ ?PDF? ?WMV? ?MP4? 3. Oracle Database ??????:????????????????????????????! ??????????????!??????????-??? ?PDF? ?WMV? ?MP4? 4. Oracle Database ?????:???????????????????????! ???????!???????·?????? ?PDF? ?WMV? ?MP4? ???????!????????·???????? ?PDF? ?WMV? ?MP4? 5. ORACLE MASTER???????:?????????????????????! ORACLE MASTER Bronze?Bronze DBA11g? ?PDF? ?WMV? ?MP4? ORACLE MASTER Bronze?11g SQL???? ?PDF? ?WMV? ?MP4? ??? ·????????????????????????/????????? ???????!?????·???????ABC ?PDF? ?WMV? ?MP4? ·??/OS/Application Server?????????? Java???! ?PDF? ?WMV? ?MP4? ??????Oracle?????????Linux?? ?PDF? ?WMV? ?MP4? Solaris 10 ?? ~????Solaris???~ ?PDF? ?WMV? ?MP4? Oracle????????WebLogic ?? ?PDF? ?WMV? ?MP4?

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• ??????!WebLogic Server????????! WebLogic Server???@Oracle Days 2013

  - by Masa Sasaki

  WebLogic Server?????????????WebLogic Server????????10?23???????Oracle Days Tokyo 2013??D2-JV-2?????????WebLogic Server????????!WebLogic Server???@Oracle Days?????????WebLogic Server?????????????????????????????????????????????????????????????????LT???WebLogic Server?????Java?????????????????????????????????????????????????WebLogic Server?????????????????????????????(?????? Fusion Middleware?????? ??? ??) ????????????? ?????????????WebLogic Server???????????????????????LT??????????????????????????????????????? Oracle WebLogic Server??????????????? ?WebLogic Server???????????? ?????? ?? ?? ?Oracle JDBC????????????? ??????????????????(OracleACE) ?? ??? ?WebLogic Server???????????TIPS? ?????????????????? ?? ??? ????????????? ??????????????? ? ?? Oracle WebLogic Server???????????????????? ?WebLogic Server????????????????? ?????? ???? ???????????????? ???SSL ?? ??? ?Native Memory Tracking??? ?????????????????? (OracleACE) ?? ??? ?Flight Recorder?????? GlassFish????·????·???? ??? ?? ??? Oracle WebLogic Server????? ??????Oracle Direct?? ?????? ?? ?? ????? WebLogic!? Facebook????WebLogic!??? ?????? ?????? WebLogic Server??? WebLogic Server?????????WebLogic Server???? ?! WebLogic Server??????(???????????) WebLogic Server???????? WebLogic Server??????

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• ?????????????Fusion Middleware??????????? ?3?

  - by rika.tokumichi

  ??????????OTN????????? ??OTN???????Fusion Middleware???????????????????????????????????????????????? ?OTN????????????????????????????? 2010?2????????????????? ????????????????????????????? ????????????? ???! ????? ??????????????????????????? ?????????????????Middleware???????????????????(;´?`A`` ????????????????????????? ?Weblogic Server???? ???????? ??????????????????????? Java?????????????????????WebLogic Server, JRockit??????????????????????????????????????????????????????????? ???????????????????????????????????!! ??????????8?Weblogic Server???@????????????????????????????????????????????????????? >??8?Weblogic Server???@??? ??????????????????????????! >WebLogic Server??? 2009?????2010???? ???? ??????????????????????????????????? ????????????????????????^^ >[2009?12??]- 2009???? - WebLogic Server???????????! ???????????????????????????????????????????! ???~????????????????????? ???1????????????????????????????????????! >WebLogic -OTN???? ???????????- ???????(??): ?????????????WebLogic Server????????????? ????????????????????~Oracle WebLogic Server 11g~ Oracle WebLogic Server???????Web??????? -??? ???!!????????·???????!?~Oracle Weblogic Server ???~ >Middleware -OTN???? ???????????- ???????(??): Web?????????/????????????? - ??????????????????? - Oracle SOA Suite 11g ???? Oracle Coherence ???? Oracle Tuxedo ???? ??????????????Middleware??????????Twitter????????????????????????? oraclemiddle_jp ??????????! ???? ??????????????? ????????? ??????????OTN-Japan???????Oracle University????????????? WebLogic????? ------------------------------------------ Oracle WebLogic Server 10g System Administrator Certified Expert ?????????????????Web??????????????????WebLogic Server??????????????????????????????????????? Oracle WebLogic Server 10g Developer Certified Expert Servlet/JSP?EJB???J2EE????????Web???????????(IDE)????????????????????????MVC??????????????????????????????????Web?????????????????????????????????? >???????? ------------------------------------------ Oracle Application Server????? ------------------------------------------ ORACLE MASTER Application Server???????????????????????????????Oracle Application Servers??????????????????? ORACLE MASTER Silver Oracle Application Server 10g(OCA) ORACLE MASTER Gold Oracle Application Server 10g(OCP) >???????? ------------------------------------------ ?????? >ORACLE MASTER Oracle Middleware???? ?????????????????????????????????? ??????????????????????? ?????????????????????????????????????????????????????????????????3????????·???·????????????????????! ????????????????????????^^ >[2010?3??]????·???·??????????&????2010????! ???????????????????????????????????????????????? ??????????!????????????????????????????????????? ???OTN-Japan??????????????????????Twitter????????????????????????????! OTN Japan Twitter????????? ?????????????????????Fusion Middleware??????????? ?3??????????? ??????????????????????! Fusion Middleware???????????! ?INFORMATION INDEPTH NEWSLETTERS Fusion Middleware Edition???????! ??1?OTN???????Fusion Middleware???????????????? ???????????????????????????????????????????????? ???????????????????????!! ?????????? Oracle/OTN????????????????????????????????????????????????? ????????????????????????????????????? INFORMATION INDEPTH NEWSLETTERS Fusion Middleware Edition??????????????????????? >???????????????????????? ??????????????????????Oracle's Dev2DBA Newsletter?????????????^^ >?Oracle's Dev2DBA Newsletter?????????????????????????????????

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• Request Entity Too Large error while uploading files of more than 128KB over SSL

  - by tushar

  We have a web portal setup on Java spring framework. It running on tomcat app server. Portal is served through apache web server connected to tomcat through JK connector. Entire portal is HTTPS enabled using 443 port of apache. Apache version is : Apache/2.4.2 (Unix). it is the latest stable version of apache web server. Whenever we try to upload files more than 128 KB into the portal, We are facing 413 error: Request Entity Too Large The requested resource /teamleadchoachingtracking/doFileUpload does not allow request data with POST requests, or the amount of data provided in the request exceeds the capacity limit. In the apache error log we get the following errors: AH02018: request body exceeds maximum size (131072) for SSL buffer AH02257: could not buffer message body to allow SSL renegotiation to proceed We did search over google and there were suggestions to put SSLRenegBufferSize as some high value like 10MB. Based on these suggestions, we had put the following entry in virtualhost section of httpd config file: SSLRenegBufferSize 10486000 But still the error persists. Also we have specified SSLVerifyClient none, but still renegotiation is happening. This is a very inconsistent and frustrating error. Any help will be highly appreciated. Many thanks in advance.

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• Filesystems for webserver with SATA and Solid State disk,

  - by Jorisslob

  We have just ordered a new webserver with 120 Gb solid state disk and a SATA disk. I am trying to plan ahead what sort of filesystem to use. This system will be running Linux, Apache/Tomcat to host java services. The main service is a system where people can upload reasonably large files (in the order of 100 Mb, images, image stacks and video), which people will be able to annotate and which will be sent to a database server when annotation is complete. Thus far, I plan to put most of the utility programs of the operating system om the SSD and put the large media files there. The SATA disks will hold the less volitile data like apache, tomcat and the servlets. For filesystems I have considered going for the stable EXT3 because I hear that it is best supported. The downside seems to be that it not the ideal choice for large files. That is why I am leaning towards using XFS for the SSD and EXT3 for the SATA. My questions are: 1) Does this sound like a reasonable setup? 2) What filesystems would you recommend for the SSD and for the SATA? Thanks

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• Windows Clients: Windows or Linux Domain Controller?

  - by Ramon Marco Navarro

  I'm planning to set up a domain controller for our small computer laboratory. I'm a little confused as to what operating system to use for our domain controller. What's in the lab: The lab has 25 units running a mix of Windows 7 and Windows XP. The domain controller will only have 2GB of RAM running a C2D E7200. (Is this enough?) What we want: The Domain Controller will also be running a git server. The Domain Controller will also be used as a general development machine (mostly Java, PHP). A way to centralize the updates for the windows clients, so that they won't have to download the same patches from the remote site. The machines would just query them from the local domain controller and get the updates from there. Our head recommended that I virtualize a Windows Server 2008 system under a Linux host and use the former as a domain controller and the latter for development or the other way around. A comparison of the advantages and disadvantages of using a Linux distribution or Windows Server 2008 in this situation would also be appreciated. As you may have noticed by now, I'm kinda new to setting up a domain so I hope you guys will be able to help me. Thank you.

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• Warning flagged by the 'rkhunter'

  - by gkt.pro

  when I scanned my Ubuntu 10.04 with rkhunter a root kit hunter toolkit, it gave following warning: Is there something that I have to worry about. [23:06:19] /usr/sbin/adduser [ Warning ] [23:06:19] Warning: The command '/usr/sbin/adduser' has been replaced by a script: /usr/sbin/adduser: a /usr/bin/perl script text executable [23:06:20] /usr/sbin/rsyslogd [ Warning ] [23:06:20] Warning: The file properties have changed: [23:06:22] /usr/bin/dpkg [ Warning ] [23:06:22] Warning: The file properties have changed: [23:06:22] /usr/bin/dpkg-query [ Warning ] [23:06:22] Warning: The file properties have changed: [23:06:24] /usr/bin/ldd [ Warning ] [23:06:24] Warning: The file properties have changed: [23:06:24] Warning: The command '/usr/bin/ldd' has been replaced by a script: /usr/bin/ldd: Bourne-Again shell script text executable [23:06:24] /usr/bin/logger [ Warning ] [23:06:24] Warning: The file properties have changed: [23:06:25] /usr/bin/mail [ Warning ] [23:06:25] Warning: The file '/usr/bin/mail' exists on the system, but it is not present in the rkhunter.dat file. [23:06:27] /usr/bin/sudo [ Warning ] [23:06:27] Warning: The file properties have changed: [23:06:29] /usr/bin/whereis [ Warning ] [23:06:29] Warning: The file properties have changed: [23:06:29] /usr/bin/lwp-request [ Warning ] [23:06:29] Warning: The command '/usr/bin/lwp-request' has been replaced by a script: /usr/bin/lwp-request: a /usr/bin/perl -w script text executable [23:06:29] /usr/bin/bsd-mailx [ Warning ] [23:06:29] Warning: The file '/usr/bin/bsd-mailx' exists on the system, but it is not present in the rkhunter.dat file. [23:06:30] /sbin/fsck [ Warning ] [23:06:30] Warning: The file properties have changed: [23:06:30] /sbin/ifdown [ Warning ] [23:06:30] Warning: The file properties have changed: [23:06:31] /sbin/ifup [ Warning ] [23:06:31] Warning: The file properties have changed: [23:06:34] /bin/dmesg [ Warning ] [23:06:34] Warning: The file properties have changed: [23:06:35] /bin/more [ Warning ] [23:06:35] Warning: The file properties have changed: [23:06:36] /bin/mount [ Warning ] [23:06:36] Warning: The file properties have changed: [23:06:37] /bin/which [ Warning ] [23:06:37] Warning: The command '/bin/which' has been replaced by a script: /bin/which: POSIX shell script text executable [23:08:58] Checking /dev for suspicious file types [ Warning ] [23:08:58] Warning: Suspicious file types found in /dev: [23:08:58] Checking for hidden files and directories [ Warning ] [23:08:58] Warning: Hidden directory found: /etc/.java [23:08:58] Warning: Hidden directory found: /dev/.udev [23:08:58] Warning: Hidden directory found: /dev/.initramfs [23:09:01] Checking version of Exim MTA [ Warning ] [23:09:01] Warning: Application 'exim', version '4.71', is out of date, and possibly a security risk. [23:09:01] Checking version of GnuPG [ Warning ] [23:09:01] Warning: Application 'gpg', version '1.4.10', is out of date, and possibly a security risk. [23:09:01] Checking version of OpenSSL [ Warning ] [23:09:01] Warning: Application 'openssl', version '0.9.8k', is out of date, and possibly a security risk.

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• VB6 Scheduled tasks on Windows Server 2008 Standard

  - by Terry

  Hello, this is my first time using this forum. Here is my situation: We are having issues with specific tasks written in VB6 it would seem. I am not a developer, but I am told these tasks exe are written in VB6. The task is initiated by task scheduler, the process begins to run (you can view the task in task manager, but no resources are used, 00 CPU, 760 K RAM), but nothing occurs. In a normal operating situation, the task will use 25% CPU and up to 20 MB RAM. When the task fails to run, you can still end and start it via Task Scheduler, but nothing happens. If you run just the process via the exe, it runs fine. The problem just seems to be when it is initiated via Task Scheduler. And this is a random issue, which always disappears after a server reboot. All of these tasks are VB 6 applications on Windows Server 2008 Standard, some servers are SP1, some are SP2, but both versions experience the issue. The task has been configured to run with highest priviledges, and to run whether logged on or not. Setting compatibility mode on the exe to 2003 does not make a difference. Situation 1: 51 - ERROR - Program did not appear to complete, check server!! (Desc: Input past end of file) in this situation, the task is running in task scheduler and you can view the process in task manager. . In the log file, all that is logged is: 12/17/2009 03:16 Starting T2 Populator version - 1.0.12 You can just end the task via task scheduler and start it via task scheduler and away it goes Situation 2: 36 - ERROR - Program last ran on 16-Dec-2009 in this situation the task is running in Task Scheduler and you can view the process in task manager, but no resources are used, 00 CPU, 760 K RAM. Nothing is logged in the log file. You end the task via task scheduler, but you must manually run the exe for it to complete. I was wondering if anyone else has experienced issues with VB6 tasks, or any tasks for that matter, on Server 2008?

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• How do I enable the confluence-users group?

  - by M. Joanis

  I've got an issue with Atlassian Confluence. Normal users can't log in, but administrators can... Details below! I manage users using an Apple Open Directory (LDAP). I created two groups: "confluence-administrators" and "confluence-users". I've added team leaders and managers to both groups, and I've added some users to "confluence-users". Everyone in "confluence-administrators" can log in easily. People in "confluence-users" can't log in at all. When I look at the user list (in Confluence), and select a user to examine the list of groups he or she belongs to, I can see that the Confluence Administrators are indeed members of the "confluence-administrators" group, but not a single user is a member of the "confluence-users" group. Not event the Confluence Administrators, which are members of both groups! So I tried to have one of the "confluence-users" log in while watching the Confluence logs. Here's the result: 2012-07-05 14:50:19,698 ERROR [http-8090-11] [core.event.listener.AutoGroupAdderListener] handleEvent Could not auto add user to group: Group <confluence-users> is read-only and cannot be updated at com.atlassian.crowd.directory.DbCachingRemoteDirectory.addUserToGroup(DbCachingRemoteDirectory.java:461) ... So it says the group group is read-only... I'm not sure why it is a problem. Well confluence-administrators too is read-only and it doesn't complain. Some things I don't think are part of the problem: I've synchronized Confluence with LDAP many, many times. I have verified many times that I didn't make a typo while setting the groups on the LDAP server. LDAP synchronization goes well. No errors in the logs (only INFO level log messages). The user exists. Errors in the logs are different when a user doesn't exist. Any help is most welcome!

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• Apache not Forwarding Client x509 Certificate to Tomcat via mod_proxy

  - by hooknc

  Hi Everyone, I am having difficulties getting a client x509 certificate to be forwarded to Tomcat from Apache using mod_proxy. From observations and reading a few logs it does seem as though the client x509 certificate is being accepted by Apache. But, when Apache makes an SSL request to Tomcat (which has clientAuth="want"), it doesn't look like the client x509 certificate is passed during the ssl handshake. Is there a reasonable way to see what Apache is doing with the client x509 certificate during its handshake with Tomcat? Here is the environment I'm working with: Apache/2.2.3 Tomcat/6.0.29 Java/6.0_23 OpenSSL 0.9.8e Here is my Apache VirtualHost SSL config: <VirtualHost xxx.xxx.xxx.xxx:443> ServerName xxx ServerAlias xxx SSLEngine On SSLProxyEngine on ProxyRequests Off ProxyPreserveHost On ErrorLog logs/ssl_error_log TransferLog logs/ssl_access_log LogLevel debug SSLProtocol all -SSLv2 SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM:+LOW SSLCertificateFile /usr/local/certificates/xxx.crt SSLCertificateKeyFile /usr/local/certificates/xxx.key SSLCertificateChainFile /usr/local/certificates/xxx.crt SSLVerifyClient optional_no_ca SSLOptions +ExportCertData CustomLog logs/ssl_request_log \ "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b" <Proxy *> AddDefaultCharset Off Order deny,allow Allow from all </Proxy> ProxyPass / https://xxx.xxx.xxx.xxx:8443/ ProxyPassReverse / https://xxx.xxx.xxx.xxx:8443/ </VirtualHost> Then here is my Tomcat SSL Connector: <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" address="xxx.xxx.xxx.xxx" maxThreads="150" scheme="https" secure="true" keystoreFile="/usr/local/certificates/xxx.jks" keypass="xxx_pwd" clientAuth="want" sslProtocol="TLSv1" proxyName="xxx.xxx.xxx.xxx" proxyPort="443" /> Could there possibly be issues with SSL Renegotiation? Could there be problems with the Truststore in our Tomcat instance? (We are using a non-standard Truststore that has partner organization CAs.) Is there better logging for what is happening internally with Apache for SSL? Like what is happening to the client cert or why it isn't forwarding the certificate when tomcats asks for one? Any reasonable assistance would be greatly appreciated. Thank you for your time.

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• Use icacls to make a directory read-only on Windows 7

  - by Dave G

  I'm attempting to test some filesystem exceptions in a Java based application. I need to find a way to create a directory that is located under %TMP% that is set to read-only. Essentially on UNIX/POSIX platforms, I can do a chmod -w and get this effect. Under Windows 7/NTFS this is of course a different story. I'm running into multiple issues on this. My user has "administrative" right (although this may not always be the case) and as such the directory is created with an ACL including: NT AUTHORITY\SYSTEM BUILTIN\Administrators <my current user> Is there a way using icacls to essentially get this directory into a state where it is read-only PERIOD, do my test, then restore the ACL for removal? EDIT With the information provided by @Ansgar Wiechers I was able to come up with a solution. I used the following: icacls dirname /deny %username%:(WD) In the page located here I found this in the remarks section: icacls preserves the canonical order of ACE entries as: * Explicit denials * Explicit grants * Inherited denials * Inherited grants By performing the above icalcs command, I was able to set the current user's ability to write or append files (WD) to the directory to deny. Then it was a question of returning it to a state post test: icacls dirname /reset /t /c Done

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• Check for updates of a specific Debian package list

  - by Erwan Queffélec

  The setup I run a Debian Squeeze host that I use to build a multilanguage project (python, java, php...) and generate custom packages (debian and RPM) automatically (through jenkins) The problem The target distributions of those Debian packages are Etch, Lenny and Squeeze. But our project has some native dependencies that are available only through the DebianRelease + 1 repository (i.e Lenny + 1 == Squeeze, Squeeze + 1 == Wheezy). We for example, need the jetty packages from Squeeze in Lenny, and the cyrus-imapd-2.4 packages from Wheezy in Squeeze. Some additional info : Some package we can simply 'backport by hand' by mirroring the DebianRelease + 1 packages to our own repositories. For instance, the jetty package from Squeeze will run fine on Lenny because it doesn't need an s**tload of additional dependencies However we do need to rebuild some packages. For instance, cyrus-imapd-2.4 from Wheezy has a lot of unsatisfied dependencies on Squeeze. So we need to rebuild it in Squeeze and then upload it to our repo. The question I need to have a simple way of knowing if they are any updates on those extra packages (both "normal" and "security" updates). I could write a simple script that runs weekly, get some parameters from a file, and generate an update report. Let's say the file looks like this: jetty:squeeze cyrus-imapd-2.4:wheezy The script should run as normal user not to mess up the system apt configuration and issue the appropriate commands to generate that report. Does Debian has some built-in apt-* commands/options dedicated to that kind of problem I could use to write this script ? If not, can someone think of another clean solution to achieve what I need ?

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• WebSeal and jsp content updated by Ajax

  - by lior chaga

  Hey, I have a problem running an application on environment with WebSeal. It is a web application with Java server that contains many parts that are replcaed within the page according to user input. For instance - a form called Outer.jsp may contain a form:options combo-box (by spring-forms), that uppon selection of an option, a certain Div is updated with a content produced by a jsp and fetched by an Ajax call (the ajax impementation in the client is done by Prototype JavaScript framework 1.5.1.2). Let's call the content fetched by ajax - Inner.jsp So Outer.jsp is fetching Inner.jsp, which in turn uses js functions in files included by the Outer.jsp. This, I think, is where my problem starts - Inner.jsp is not familiar with any of the functions included in Outer.jsp. And so, almost any operation performed by Inner.jsp is failing miserably. Needless to say - this works perfect when running on environment without WebSeal. Note that the scripting is enabled in WebSeal junction (with the -J option). I also see that the content returned by the Ajax call includes a document.cookie added by WebSeal (not sure it matters to this problem) Can anyone assist? Thanks! Lior

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• What can cause an increase in inactive memory and how to reclaim it?

  - by Boaz

  I have heavy application running on a CentOS server and I'm seeing a strange memory behavior. Here is a snapshot of a munin graph: As you can see the amount of committed memory increases gradually causing the swap file to be use. What strikes me odd is that the amount of inactive memory keeps growing as well. It is my understanding that the inactive memory is actually memory freed up but not yet clean by the OS and put back in the free memory pool. It seems that running out of memory is acutally caused by this lack of clean up, but I may be wrong. Can you give some tips to find the cause of the problem and/or cause CentOS to reclaim the inactive memory? Thanks. Some extra info: 1) I have a tmpfs mounted on /tmp and the number of files stored there grows (but it is double the amount of the inactive memory). 2) cat /proc/meminfo (at a later stage than the image) gives: MemTotal: 14371428 kB MemFree: 1207108 kB Buffers: 35440 kB Cached: 4276628 kB SwapCached: 785316 kB Active: 9038924 kB Inactive: 3902876 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 14371428 kB LowFree: 1207108 kB SwapTotal: 10223608 kB SwapFree: 6438320 kB Dirty: 627792 kB Writeback: 0 kB AnonPages: 7844560 kB Mapped: 49304 kB Slab: 146676 kB PageTables: 27480 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 17409320 kB Committed_AS: 16471488 kB VmallocTotal: 34359738367 kB VmallocUsed: 275852 kB VmallocChunk: 34359462007 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 Hugepagesize: 2048 kB 3) The application is a combination of MySQL, Heritrix (http://crawler.archive.org/ ) and a Tomcat based Java servlet to manage things.

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• What can cause an increase in inactive memory and how to reclaim it?

  - by Boaz

  Hi All, I have heavy application running on a CentOS server and I'm seeing a strange memory behavior. Here is a snapshot of a munin graph: As you can see the amount of committed memory increases gradually causing the swap file to be use. What strikes me odd is that the amount of inactive memory keeps growing as well. It is my understanding that the inactive memory is actually memory freed up but not yet clean by the OS and put back in the free memory pool. It seems that running out of memory is acutally caused by this lack of clean up, but I may be wrong. Can you give some tips to find the cause of the problem and/or cause CentOS to reclaim the inactive memory? Thanks. Some extra info: 1) I have a tmpfs mounted on /tmp and the number of files stored there grows (but it is double the amount of the inactive memory). 2) cat /proc/meminfo (at a later stage than the image) gives: MemTotal: 14371428 kB MemFree: 1207108 kB Buffers: 35440 kB Cached: 4276628 kB SwapCached: 785316 kB Active: 9038924 kB Inactive: 3902876 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 14371428 kB LowFree: 1207108 kB SwapTotal: 10223608 kB SwapFree: 6438320 kB Dirty: 627792 kB Writeback: 0 kB AnonPages: 7844560 kB Mapped: 49304 kB Slab: 146676 kB PageTables: 27480 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 17409320 kB Committed_AS: 16471488 kB VmallocTotal: 34359738367 kB VmallocUsed: 275852 kB VmallocChunk: 34359462007 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 Hugepagesize: 2048 kB 3) The application is a combination of MySQL, Heritrix (http://crawler.archive.org/ ) and a Tomcat based Java servlet to manage things.

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• HTTP not working EC2 instance with own domain name

  - by bogdanvursu

  I have this problem I've already posted on the Amazon AWS forum. Unfortunately I haven't got a clear answer I and I was hoping you guys could help. Here's the link: http://developer.amazonwebservices.com/connect/thread.jspa?messageID=198238#198207 Basically I don't know why after associating an Elastic IP address and mapping it to one of my domains, FTP an ping work fine, but HTTP does a 302 redirect to the Amazon AWS hostname I had before associating the Elastic IP address. Here's the question from the AWS forum: I have an EC2 instance with HTTP and FTP installed. They both worked. Then I associated an Elastic IP address to that instance. Then I mapped that IP address to a name which is a subdomain of a domain I own. I think it's an A name (I didn't do the mapping personally). Now FTP works and HTTP doesn't. The AWS host name before the Elastic IP association: ec2-184-73-27-8.compute-1.amazonaws.com The AWS IP address and host name after the association: 174.129.7.254 and ec2-174-129-7-254.compute-1.amazonaws.com The domain which is mapped to 174.129.7.254 using an A record is: demo.flashxml.net FTP works means that I can connect to both 174.129.7.254, ec2-174-129-7-254.compute-1.amazonaws.com and demo.flashxml.net. HTTP doesn't work means that a HTTP request to 174.129.7.254, ec2-174-129-7-254.compute-1.amazonaws.com or demo.flashxml.net returns a 302 redirect to ec2-184-73-27-8.compute-1.amazonaws.com Here is my VirtualHost file: <VirtualHost *:80> DocumentRoot /home/ec2-user/public_html/wordpress ServerName demo.flashxml.net ErrorLog logs/ec2-user-error_log <Directory /home/ec2-user/public_html/wordpress> AllowOverride FileInfo Order Deny,Allow Allow from All </Directory> </VirtualHost> I finally figured out what was wrong. It's the fact that I installed Wordpress on the server using the hostname provided by Amazon. After associating the Elastic IP and updating the DNS records, the server was reachable - FTP working was the proof of that. The 302 redirect when accessing via HTTP was caused by Wordpress's hostname settings. So, what I've learned from all this was that I should setup my IP and DNS first and only after that install Wordpress or any other web app(s).

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