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• How Facebook's Ad Bid System Works

  - by pnongrata

  When you are creating an ad on Facebook, you are provided with a "suggested bid" range (e.g., $0.90 - $2.15 USD). According to this page: The suggested bid range is there to help you pick a maximum bid so your ad will be successful. It’s based on how many other advertisers are competing to show their ad to the same audience as you are. I'm interested in understanding what's actually going on (technically) under the hood here. Say a user logs into Facebook. On the server-side, it the HTTP request that the user's browser sent (as part of the login) is handled, and the server needs to figure out which ad to display back to the user. I assume this is where the "bidding" system comes into play? Say that, based on this user's demographics, and based on the audience targeting that several competing advertisers designed their campaign with, let's pretend that Facebook sees a pool of 20 different ads it could return. How does this bidding system help Facebook determine which of the 20 ads it returns to the client-side? I'm guessing that advertisers who "bid more" get prioritized over those who "bid less". But when does this bidding take place? How often does an advertiser need to re-bid? How long is a bid binding for? Once I understand these usage-related concepts behind ads, it will probably be obvious between which of the following "selection strategies" the backend is using: Round robin Prioritized round robin Randomized (doubtful) History-based MVP-based Thanks to anyone who can help point me in the right direction and explain what these suggested bid systems are and how they work.

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• TFS and Sharepoint integration

  - by pho3nix

  I using a Sharepoint 2007 and TFS 2010. I installed all with reports sharepoint integration but when i try create a TeamProject Collections always return this warning: Server was unable to process request. --- TF250029: No user was found within the context of a Web site. Verify that the site does not allow anonymous access. And in sharepoint web applications tfs console window when check my sharepoint portal /sites return a error saying is blocked by firewall or server extensions is not installed, but i have all ok. Anyone can helpme, please.

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• httpd memory could not be written on winxp

  - by Shawn

  I have a apache server on a winxp box, ocassionaly I got a "httpd error, memory could not be written" error, here is what I found in the apache error-log `[Sat Sep 12 10:58:34 2009] [error] [client 113.68.84.79] Invalid URI in request ;\xece\r\xd5m\xed{\xbcf\xbf\xffq\bZNB\xf0a\xf9\x13\xf3[\x06Y\x02G\xca\xc5\xf3\x9ft\x89b\xed\xb5m\x9f\x1c\xa6\x03\x10\xee\xe9G\xb5\xe0glLf\xd4eFT\x8f.{Ysl\x89\x05\x18\x0f\x0fp\xdd\xaf\x11G\xbe\xbf\x96/Pr\x9e\xf4\x89\xf2\xd4^mA\x13y2\xe3\x95\xaeD\x02\xa7*G\xe4\x1d\x07r^\xaf_J\xf7\xbc\x90\x17\xda\x90\x17\xec\xd4\xe8\xe4\xfcU\x04\xbc2V\xe1\x170\xeb Error in my_thread_global_end(): 66 threads didn't exit [Sat Sep 12 11:08:43 2009] [notice] Parent: child process exited with status 3221225477 -- Restarting. [Sat Sep 12 11:08:51 2009] [notice] Apache/2.2.4 (Win32) PHP/5.2.3 configured -- resuming normal operations` Anybody can tell what this means and where the problem is ? Thanks.

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• haproxy not passing X_FORWARD_FOR on HTTP POST

  - by Mark L

  Hello, I've setup HAProxy with the option forwardfor option so it'll pass on the user's IP to PHP via $_SERVER[ "HTTP_X_FORWARDED_FOR" ]. If the page request isn't a POST it's populated fine but if it is then it won't be populated. Any ideas where I've gone wrong? Thanks everyone! My whole HAProxy conf file for reference: global log 127.0.0.1 local0 log 127.0.0.1 local1 notice #log loghost local0 info maxconn 4096 #chroot /usr/share/haproxy user haproxy group haproxy daemon #debug #quiet defaults log global mode http option httplog option dontlognull retries 3 option redispatch maxconn 4096 contimeout 5000 clitimeout 50000 srvtimeout 50000 listen webfarm :80 mode http balance roundrobin option forwardfor server webA 192.168.240.4 weight 1 maxconn 2048 check server webB 192.168.240.3 weight 1 maxconn 2048 check listen smtp :25 mode tcp option tcplog balance roundrobin server smtp 192.168.240.4:25 check

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• ASP.NET MVC 3 Hosting :: Deploying ASP.NET MVC 3 web application to server where ASP.NET MVC 3 is not installed

  - by mbridge

  You can built sample application on ASP.NET MVC 3 for deploying it to your hosting first. To try it out first put it to web server where ASP.NET MVC 3 installed. In this posting I will tell you what files you need and where you can find them. Here are the files you need to upload to get application running on server where ASP.NET MVC 3 is not installed. Also you can deploying ASP.NET MVC 3 web application to server where ASP.NET MVC 3 is not installed like this example: you can change reference to System.Web.Helpers.dll to be the local one so it is copied to bin folder of your application. First file in this list is my web application dll and you don’t need it to get ASP.NET MVC 3 running. All other files are located at the following folder: C:\Program Files\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\ If there are more files needed in some other scenarios then please leave me a comment here. And… don’t forget to convert the folder in IIS to application. While developing an application locally, this isn’t a problem. But when you are ready to deploy your application to a hosting provider, this might well be a problem if the hoster does not have the ASP.NET MVC assemblies installed in the GAC. Fortunately, ASP.NET MVC is still bin-deployable. If your hosting provider has ASP.NET 3.5 SP1 installed, then you’ll only need to include the MVC DLL. If your hosting provider is still on ASP.NET 3.5, then you’ll need to deploy all three. It turns out that it’s really easy to do so. Also, ASP.NET MVC runs in Medium Trust, so it should work with most hosting providers’ Medium Trust policies. It’s always possible that a hosting provider customizes their Medium Trust policy to be draconian. Deployment is easy when you know what to copy in archive for publishing your web site on ASP.NET MVC 3 or later versions. What I like to do is use the Publish feature of Visual Studio to publish to a local directory and then upload the files to my hosting provider. If your hosting provider supports FTP, you can often skip this intermediate step and publish directly to the FTP site. The first thing I do in preparation is to go to my MVC web application project and expand the References node in the project tree. Select the aforementioned three assemblies and in the Properties dialog, set Copy Local to True. Now just right click on your application and select Publish. This brings up the following Publish wizard Notice that in this example, I selected a local directory. When I hit Publish, all the files needed to deploy my app are available in the directory I chose, including the assemblies that were in the GAC. Another ASP.NET MVC 3 article: - New Features in ASP.NET MVC 3 - ASP.NET MVC 3 First Look

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• Extract data from specific range of cells in multiple worksheet in multiple files.

  - by Michele

  Extract data from specific range of cells(always the same cells) in multiple worksheet in multiple files. 1 file=1 day. I have 6 technicians each day of the week, Monday thru Friday. So, 5 files with 6 worksheets. I have entered specific info in specific cells of every work sheet. The range is constant(the same address in EVERY worksheet in every file.) So, I need a formula to extract and calculate the data in the given range and dump it into another spreadsheet. I can forward an example a file if it will help anyone to answer my question. Or more explanation if necessary is available upon request. JUST PLEASE SOMEBODY HELP ME!!!!! Thank you all in advance. Regards, Michele

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• How can I avoid repeating DocumentRoot in this Apache virtual host?

  - by David Faux

  I have an Apache virtual host configured for a website powered by Wordpress. <VirtualHost *:80> ServerName 67.178.132.253 DocumentRoot /home/david/wordpressWebsite # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteRule ^index\.php$ - [L] RewriteCond /home/david/wordpressWebsite%{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php [L] </IfModule> # END WordPress </VirtualHost> How can I avoid hard-coding /home/david/wordpressWebsite twice? I don't want to use REQUEST_URI since that involves an extra request.

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• Apache2 alias in virtual host

  - by 0x7c00

  I have multiple virtual host in one server and plan to has some alias setup in one virtualhost. So I add the Alias /foo/ /path/to/foo/ in virtualhost directive,but it has no effect. request of host1/foo/ will return 404. But if I add this to /etc/apache2/mods-available/alias.conf, it works. But the problem is host2 will also share this alias. Is there a way to make the alias work only for host1? B.T.W, I use apache2ctl -l, there's no mod_alias.c listed, weird.

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• SSIS Expression Editor & Tester

  Published today on CodePlex is the SSIS Expression Editor & Tester project. If you want to try it just pop over to CodePlex and download it. About five years ago I developed my own expression editor control. It first got used in our custom tasks as the MS editor didn’t become available until SQL 2005 SP1, but even then it had some handy features I preferred. For example resizable panes so that if your expression result was more than two lines you could see them all. It also meant I could change the functions available in the tree view, the most obvious use being to add some handy snippets and samples that I used a lot. This quickly developed into a small expression testing tool. I’d develop complex expressions using my editor and then copy it back into the package itself. I have been meaning to make the tool available for some time and finally made the effort, the code is checked-in and the signed downloads are published on CodePlex. There are two flavours, SQL 2005 or 2008, and just a simple zip file to download and extract. The tool doesn’t need installing, and is completely portable. It does need SSIS to be installed on the local machine though. Each zip file contains two files: ExpressionTester.exe – The tool itself, run this. ExpressionEditor.dll – The reusable editor control. A while ago the gentlemen behind BIDS Helper noticed the editor on a task and asked about using it. This became incorporated into their variable window extensions feature. To try and help them and anyone else that wants to use the editor control, it is available as a single assembly that you can reference yourself, and of course all the source code is on CodePlex too. Just add a reference to the ExpressionEditor.dll assembly and you should be up and running in no time. There is a sample project Package Test in the source code which shows how to use the editor control form in it’s simplest form, or if you want to host control directly then the tester tool is a perfect example.

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• HTTP Non-persistent connection and objects splitting

  - by Fabio Carello

  I hope this is the right board for my question about HTTP protocol with non-persistent connections. Suppose a single request for a html object that requires to be split in two different HTML response messages. My question is quite simple: do the connection will be closed after the first packet dispatch and then the other one will be sent on a new connection? I can't figure out if the non-persistent connection is applied at "single object level" (does't care if on multiples messages) or for every single message. Thanks for your answers!

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• verisign certificate into jboss server SSL

  - by rfders

  Hi all, i'm trying to enable jboss to uses ssl protocol using a previously generated certificate from verisign, i imported both certificate, server certificate and ca certificate into the keytore file, and i configured the server.xml to use that keystore and activate ssl protocol, then when i run the jboss, I got this error "certificate or key corresponds to the SSL cipher suites which are enabled" Question, reading some post on internet, i found that every example was made it generating a Certificate Request, it stricly necesary to do that if i already have the server certificate and that CSR has to be imported into the keystore as well ? at this point i'm very confused about this issue, i tried almost every solutions posted in several forums but till now i haven't any luck !! can you give me some tips in order to solve this problem. thanks in advance this are my keystore file: Keystore type: jks Keystore provider: SUN Your keystore contains 2 entries j2ee, Dec 29, 2009, trustedCertEntry, Certificate fingerprint (MD5): 69:CC:2D:2A:2D:EF:C4:DB:A2:26:35:57:06:29:7D:4C ugent, Dec 29, 2009, trustedCertEntry, Certificate fingerprint (MD5): AC:D8:0E:A2:7B:B7:2C:E7:00:DC:22:72:4A:5F:1E:92 and my server.xml configuration:

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• Bizarre image loading problem from apache2

  - by NateDSaint

  Users have complained a few times about seeing a bizarre set of pink or green stripes on our webpage. At first I thought there were a rash of video card outages, but then someone sent me a screenshot from their browser (IE8). I later saw the same thing, but with slightly different colors on Chrome. Users have experienced this on their iPads and iPhones (iOS Safari). Because I've optimized the site to cache images, the bad image stays around until you clear your cache, so once you do, it resolves itself. My assumption is that the transmission of the image is being cut off mid-stream and then staying that way, but I can't for the life of me figure out why. Here's what I've checked: Header length is being sent, and transmission looks okay (wget sample below): wget http://www.superiorlivestock.com/templates/sla2/images/wallbg2.jpg --2012-04-05 08:46:00-- http://www.superiorlivestock.com/templates/sla2/images/wallbg2.jpg Resolving www.superiorlivestock.com (www.superiorlivestock.com)... [ip redacted] Connecting to www.superiorlivestock.com (www.superiorlivestock.com)|[ip redacted]|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 45926 (45K) [image/jpeg] Saving to: `wallbg2.jpg' Images are not being served gzipped (apache conf below): SetOutputFilter DEFLATE SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary The site is www.superiorlivestock.com, and here's a sample of the bad page load: Is there something obvious I'm missing? Am I saving my images in the wrong format somehow?

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• Generic Repository with SQLite and SQL Compact Databases

  - by Andrew Petersen

  I am creating a project that has a mobile app (Xamarin.Android) using a SQLite database and a WPF application (Code First Entity Framework 5) using a SQL Compact database. This project will even eventually have a SQL Server database as well. Because of this I am trying to create a generic repository, so that I can pass in the correct context depending on which application is making the request. The issue I ran into is my DataContext for the SQL Compact database inherits from DbContext and the SQLite database inherits from SQLiteConnection. What is the best way to make this generic, so that it doesn't matter what kind of database is on the back end? This is what I have tried so far on the SQL Compact side: public interface IRepository<TEntity> { TEntity Add(TEntity entity); } public class Repository<TEntity, TContext> : IRepository<TEntity>, IDisposable where TEntity : class where TContext : DbContext { private readonly TContext _context; public Repository(DbContext dbContext) { _context = dbContext as TContext; } public virtual TEntity Add(TEntity entity) { return _context.Set<TEntity>().Add(entity); } } And on the SQLite side: public class ElverDatabase : SQLiteConnection { static readonly object Locker = new object(); public ElverDatabase(string path) : base(path) { CreateTable<Ticket>(); } public int Add<T>(T item) where T : IBusinessEntity { lock (Locker) { return Insert(item); } } }

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• What kind of server do I need to handle 10 million requests and mySQL queries a day?

  - by Calvin

  I'm a new bie of server administration and I'm looking for a powerful hosting service to host my new website. This website is basically a back-end of an mobile online game, and it will: handle up to 10 million of HTTPS request and mySQL queries a day store up to 2000 GB file on the hard disk transfer probably 5000 GB data in and out per month it runs on PHP and mySQL have 10 million records in mySQL database, for each record there are 5-10 fields, around 100 bytes each I really don't know what kind of a server I need to handle these requirements, my question is: what cpu/ram do I need for a dedicated server or vps? what hosting companies are able to offer this kind of dedicated server or VPS? what about cloud computing? I've researched Amazon EC2 but it seems complicated to me. And I've contacted Rackspace but strangely they said Cloudsites is not suitable for my requirements. I wonder if there is other cloud hosting company. any other alternative method? thanks very much!

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• Getting developers and support to work together

  - by Matt Watson

  Agile development has ushered in the norm of rapid iterations and change within products. One of the biggest challenges for agile development is educating the rest of the company. At my last company our biggest challenge was trying to continually train 100 employees in our customer support and training departments. It's easy to write release notes and email them to everyone. But for complex software products, release notes are not usually enough detail. You really have to educate your employees on the WHO, WHAT, WHERE, WHY, WHEN of every item. If you don't do this, you end up with customer service people who know less about your product than your users do. Ever call a company and feel like you know more about their product than their customer service people do? Yeah. I'm talking about that problem.WHO does the change effect?WHAT was the actual change?WHERE do I find the change in the product?WHY was the change made? (It's hard to support something if you don't know why it was done.)WHEN will the change be released?One thing I want to stress is the importance of the WHY something was done. For customer support people to be really good at their job, they need to understand the product and how people use it. Knowing how to enable a feature is one thing. Knowing why someone would want to enable it, is a whole different thing and the difference in good customer service. Another challenge is getting support people to better test and document potential bugs before escalating them to development. Trying to fix bugs without examples is always fun... NOT. They might as well say "The sky is falling, please fix it!"We need to over train the support staff about product changes and continually stress how they document and test potential product bugs. You also have to train the sales staff and the marketing team. Then there is updating sales materials, your website, product documentation and other items there are always out of date. Every product release causes this vicious circle of trying to educate the rest of the company about the changes.Do we need to record a simple video explaining the changes and email it to everyone? Maybe we should  use a simple online training type app to help with this problem. Ultimately the struggle is taking the time to do the training, but it is time well spent. It may save you a lot of time answering questions and fixing bugs later. How do we efficiently transfer key product knowledge from developers and product owners to the rest of the company? How have you solved these issues at your company?

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• BizTalk HL7 Receive Pipeline Exception

  - by Paul Petrov

  If you experience sequence of errors below with BizTalk HL7 MLLP receive ports you may need to request a hotfix from Microsoft. Knowledge base article number is 2454887 but it’s still not available on the KB site. The hotfix is recently released and you may need to open support ticket to get to it. It requires three other hotfixes installed: ·         970492 (DASM 3.7.502.2) ·         973909 (additional ACK codes) ·         981442 (Microsoft.solutions.btahl7.mllp.dll 3.7.509.2) If the exceptions below repeatedly appear in the event log you most likely would be helped by the hotfix: Fatal error encountered in 2XDasm. Exception information is Cannot access a disposed object. Object name: 'CEventingReadStream'. There was a failure executing the receive pipeline: "BTAHL72XPipelines.BTAHL72XReceivePipeline, BTAHL72XPipelines, Version=1.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Source: "BTAHL7 2.X Disassembler" Receive Port: "ReceivePortName" URI: "IPAddress:portNumber" Reason: Cannot access a disposed object. Object name: 'CEventingReadStream'. The Messaging Engine received an error from transport adapter "MLLP" when notifying the adapter with the BatchComplete event. Reason "Object reference not set to an instance of an object." We’ve been through a lot of troubleshooting with Microsoft Product Support and they did a great job finding an issue and releasing a fix.

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• Adding a Role to a Responsibility for Use with the Oracle E-Business Suite SDK for Java JAAS Implementation

  - by Juan Camilo Ruiz

  This new post on the series of ADF integration with Oracle E-Business Suite, was written by Sara Woodhull, Principal Product Manager on the Oracle E-Business Suite Applications Technology team. Based on a previous post of the series, a reader asked what to do if you have an existing responsibility assigned to lots of users, instead of the UMX role that the Oracle E-Business Suite SDK for Java JAAS Implementation requires.  It would be tedious to assign a new role directly to hundreds or thousands of users, so naturally we’d like to avoid that if possible. Most people don’t know this, but it’s possible to assign a UMX role to a responsibility in Oracle User Management. Once you do that, users with your responsibility will all inherit your UMX role automatically. You can then proceed with using your UMX role with JAAS for ADF. Here is how to assign a UMX role to a responsibility in Oracle E-Business Suite: In the User Management responsibility, go to the Roles & Role Inheritance page. Search for the responsibility you want. In the search results table, click the “View In Hierarchy” icon for your responsibility. Note that the codes for responsibilities start with FND_RESP, while the codes for roles start with UMX. In the Role Inheritance Hierarchy, click on the Add Node icon (green plus + ) for your responsibility. Now you will see what appears to be the same page again but it is a little different (note the text at the top telling you the role you select will be inherited…).  This time, either search or expand nodes until you find your custom UMX role.  Use the Quick Select to choose that role. You will be sent back to the first screen, where you should see a confirmation message at the top. On the same page you can verify that the custom UMX role is underneath the responsibility.  You may need to expand one or more nodes to see the UMX role under the responsibility. You might see some other roles that have been inherited as well. Now that your users have the UMX role, you can test that the UMX role is being passed through to your ADF application through the Oracle E-Business Suite SDK for Java JAAS feature. Happy coding!

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• Using NPS to restrict access to WLAN

  - by eric.s

  We currently have one WLAN that only domain users can connect to. We will be adding a guest WLAN and would like all non-domain machines to use this, even if a user has a domain account. We have set up NPS and can log in against it, but we can not restrict the connection option to be a domain computer AND a domain account. As a network policy it states that it moves along through each policy until it finds one that it accepts or runs out. For connection request policies Domain Computers is not an option. This is where I thought I may be able to stop it. Has anyone been able to successfully restrict this without manually adding MACs to the WLAN Controller?

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• Disallow all user agents except one using .htaccess?

  - by Kian Mayne

  I've been struggling to get this .htaccess working. The aim is to disallow all user agents besides my app. The app sends a GET request with a user agent of lets say 'AcmeUpdater'. Whenever I try to navigate to any file in the folder, I get a 500 - Internal Server Error. Here are the rules I'm using: <IfModule mod_rewrite.c> Options +FollowSymLinks RewriteEngine on RewriteBase / RewriteCond %{HTTP_USER_AGENT} !^KMUpdaterClient* RewriteRule .* - [F,L] </IfModule> I have updated the .htaccess file as suggested in the answer by Nick, and restarted Apache. After trying a couple of different things, it seems that just the presence of a .htaccess is causing the 500 error. I'm getting nothing in the error logs. The .htaccess file at the document root looks like the following: <IfModule mod_rewrite.c> Options +FollowSymLinks ErrorDocument 404 /index.php?error=404 RewriteEngine On RewriteBase / RewriteRule ^index\.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d </IfModule> So I realised that the error logs were in chronological order rather than the reverse chronological I expected (Oops!). The error I'm getting is: </IfModule> without matching <IfModule> section. I removed the </IfModule> and still I get that error. Ideas?

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• Comparing the Performance of Visual Studio's Web Reference to a Custom Class

  As developers, we all make assumptions when programming. Perhaps the biggest assumption we make is that those libraries and tools that ship with the .NET Framework are the best way to accomplish a given task. For example, most developers assume that using ASP.NET's Membership system is the best way to manage user accounts in a website (rather than rolling your own user account store). Similarly, creating a Web Reference to communicate with a web service generates markup that auto-creates a proxy class, which handles the low-level details of invoking the web service, serializing parameters, and so on. Recently a client made us question one of our fundamental assumptions about the .NET Framework and Web Services by asking, "Why should we use proxy class created by Visual Studio to connect to a web service?" In this particular project we were calling a web service to retrieve data, which was then sorted, formatted slightly and displayed in a web page. The client hypothesized that it would be more efficient to invoke the web service directly via the HttpWebRequest class, retrieve the XML output, populate an XmlDocument object, then use XSLT to output the result to HTML. Surely that would be faster than using Visual Studio's auto-generated proxy class, right? Prior to this request, we had never considered rolling our own proxy class; we had always taken advantage of the proxy classes Visual Studio auto-generated for us. Could these auto-generated proxy classes be inefficient? Would retrieving and parsing the web service's XML directly be more efficient? The only way to know for sure was to test my client's hypothesis. Read More >

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• Ubuntu 13.10: nslookup not automatically appending DNS suffixes

  - by Alex

  When I configure Ubuntu 13.10 server I ran into a problem: Usally (working on 12.10 machines) I add the following information in my /etc/resolv.conf file: nameserver 192.168.2.180 domain our.domain.com Normally, when I then ping a given host , .e.g: ping host01 It would resolve the FQDN to host01.our.domain.com However in ubuntu 13.10 this doesn't seem to be working, it just returns the following: ~# nslookup host01 Server: 192.168.2.180 Address: 192.168.2.180#53 ** server can't find host01: SERVFAIL Which is normaly since the DNS server doesnt respont to a 'host01' request. However if I do the same nslookup on an Ubuntu 12.10 machine it automatically appends the 'our.domain.com' suffix to whatever I throw at it that doens't already have this suffix. Is this a 13.10 bug, or am I doing something wrong?

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• http proxy caching headers

  - by David Hagan

  I have a service for which I'm about to upgrade the authentication. However, I'm trying to ensure that I make the right decision about where the encryption algorithms occur. I currently have two options: option 1) the authentication module is deployed to the client as a javascript library over https and executes client-side, so that the client can POST back an encrypted string. option 2) the authentication module is kept server-side so that the client need only POST back an unencrypted string. I know that many http proxies cache/log the query-string (and therefore any query parameters), but does anyone know of any http proxies that cache the headers as well? If the headers are being cached, then I'll clearly want to encrypt the password inside the SSL encryption, because to my understanding the headers of an HTTPS request may not always be encrypted (depending on the capabilities of the browser etcetera). Can anyone shed any light on the caching of headers by http proxies? Do you have one that does, or know of one that does?

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• Is there a security risk for allowing people to set their DNS so their own subdomains can be route to my server?

  - by DantheMan

  Lets say that I have a web application, built in Django and deployed with Nginx. Is it a good idea to offer a service that allows customers to request that a subdomain can be pointed at it. I figured this: If I dont allow this, then some companies wont want to access the service from http://mydjangoappmadeupname.com/bigcorporation/ They would rather access it through http://service.bigcorporation.com That would effectively mask that they are using an outside resource. Is there a significant risk that I am overlooking? Also do you think it would be easier to just set things up in Django to handle it, allowing Nginx to accept all domains and then pushing them to Django which would filter out if they are allowed or not, or would it be better to just update my Nginx log each time a client wanted this changed?

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• Silverlight Cream for June 22, 2011 -- #1111

  - by Dave Campbell

  In this Issue: Kunal Chowdhury, Beth Massi, Mike Taulty, Xpert360, and Erno de Weerd. Above the Fold: Silverlight: "Silverlight, HTML and the WebBrowser Control for Offline Apps" Mike Taulty WP7: "Windows Phone 7 (Mango) Tutorial - 18 - Know about various Phone Tasks" Kunal Chowdhury LightSwitch: "How to Create a Simple Audit Trail (Change Log) in LightSwitch" Beth Massi From SilverlightCream.com: Windows Phone 7 (Mango) Tutorial - 18 - Know about various Phone Tasks Kunal Chowdhury has number 18 in his Mango series up and is discussing WP7.1 Microsoft.Phone.Tasks namespace classes How to Create a Simple Audit Trail (Change Log) in LightSwitch Beth Massi's latest is a demo of building an audit trail to track changes to records in LightSwitch Silverlight, HTML and the WebBrowser Control for Offline Apps Mike Taulty takes a good hard look at the WebBrowser control ... and all the permutations and gyrations. If you're using or going to use this control, you definitely want to read this article. PivotViewer Shorts Part 5: Invert Facet Category Selections Xpert360 has his 5th tutorial up on PivotViewer, covering the topic of inverting the facet category's selections... per reader request. Windows Phone 7: Drawing graphics for your application with Inkscape – Part III: Backgrounds Erno de Weerd has his 3rd tutorial in his series using Inkscape to draw graphics for your WP7 app... this one is on Background images, and staying within in the Marketplace guidelines of course Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Are you a GPGPU developer? Participate in our UX study

  - by Daniel Moth

  You know that I work on the parallel debugger in Visual Studio and I've talked about GPGPU before and I have also mentioned UX. Below is a request from my UX colleagues that pulls all of it together. If you write and debug parallel code that uses GPUs for non-graphical, computationally intensive operations keep reading. The Microsoft Visual Studio Parallel Computing team is seeking developers for a 90-minute research study. The study will take place via LiveMeeting or at a usability lab in Redmond, depending on your preference. We will walk you through an example of debugging GPGPU code in Visual Studio with you giving us step-by-step feedback. ("Is this what you would you expect?", "Are we showing you the things that would help you?", "How would you improve this") The walkthrough utilizes a “paper” version of our current design. After the walkthrough, we would then show you some additional design ideas and seek your input on various design tradeoffs. Are you interested or know someone who might be a good fit? Let us know at this address: [email protected]. Those who participate (and those who referred them), will receive a gratuity item from a list of current Microsoft products. Comments about this post welcome at the original blog.

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