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• Why are MVC & TDD not employed more in game architecture?

  - by secoif

  I will preface this by saying I haven't looked a huge amount of game source, nor built much in the way of games. But coming from trying to employ 'enterprise' coding practices in web apps, looking at game source code seriously hurts my head: "What is this view logic doing in with business logic? this needs refactoring... so does this, refactor, refactorrr" This worries me as I'm about to start a game project, and I'm not sure whether trying to mvc/tdd the dev process is going to hinder us or help us, as I don't see many game examples that use this or much push for better architectural practices it in the community. The following is an extract from a great article on prototyping games, though to me it seemed exactly the attitude many game devs seem to use when writing production game code: Mistake #4: Building a system, not a game ...if you ever find yourself working on something that isn’t directly moving your forward, stop right there. As programmers, we have a tendency to try to generalize our code, and make it elegant and be able to handle every situation. We find that an itch terribly hard not scratch, but we need to learn how. It took me many years to realize that it’s not about the code, it’s about the game you ship in the end. Don’t write an elegant game component system, skip the editor completely and hardwire the state in code, avoid the data-driven, self-parsing, XML craziness, and just code the damned thing. ... Just get stuff on the screen as quickly as you can. And don’t ever, ever, use the argument “if we take some extra time and do this the right way, we can reuse it in the game”. EVER. is it because games are (mostly) visually oriented so it makes sense that the code will be weighted heavily in the view, thus any benefits from moving stuff out to models/controllers, is fairly minimal, so why bother? I've heard the argument that MVC introduces a performance overhead, but this seems to me to be a premature optimisation, and that there'd more important performance issues to tackle before you worry about MVC overheads (eg render pipeline, AI algorithms, datastructure traversal, etc). Same thing regarding TDD. It's not often I see games employing test cases, but perhaps this is due to the design issues above (mixed view/business) and the fact that it's difficult to test visual components, or components that rely on probablistic results (eg operate within physics simulations). Perhaps I'm just looking at the wrong source code, but why do we not see more of these 'enterprise' practices employed in game design? Are games really so different in their requirements, or is a people/culture issue (ie game devs come from a different background and thus have different coding habits)?

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• Are you reporting Visual Studio 2012 issues to Microsoft correctly?

  - by Tarun Arora

  Issues you may run into while using Visual Studio need to be reported to the Microsoft Product Team via the Microsoft connect site. The Microsoft team then tries to reproduce the issue using the details provided by you. If the information you provide isn’t sufficient to reproduce the issue the team tries to contact you for specifics, this not only increases the cycle time to resolution but the lack of communication also results in issues not being resolved. So, when I report an issue one part of me tells me to include as much detail about the issue as I can clubbing screen shots, repo steps, system information, visual studio version information,… the other half tells me this is so time consuming, leave it for now and come back to fill all these details later. Reporting a bug but not including the supporting information is an invitation to excuses like …     Microsoft has absolutely changed this experience for VS 2012. The Microsoft Visual Studio Feedback tool is designed to simplify the process of providing feedback and reporting issues to Microsoft that you may encounter while using Microsoft Visual Studio 2012. Note – The Microsoft Visual Studio 2012 Feedback client currently only works for VS 2012 and not any other versions of Visual Studio. Setting up the Microsoft Visual Studio 2012 Feedback client Open Visual Studio, from the Tools menu select Extension and Updates. In the Extension and Updates window, click Online from the left pane and search using the text ‘feedback’, download and Install Microsoft Visual Studio 2012 Feedback Tool by following the instructions from the wizard. Note - Restarting Visual Studio after the install is a must! How to report a bug for Visual Studio 2012? Click on the Help menu and choose Report a Bug You should see an icon Microsoft Visual Studio 2012 Feedback Tool come up in the system tray icon area You’ll need to accept the Privacy statement. You have the option of reporting the feedback as private or public. Microsoft works with several Partners, MVP’s and Vendors who get access to early bits of Microsoft products for valuation. This is where it becomes essential to report the feedback privately. I would choose the Public option otherwise. After all if it’s out there in the public, others can discover and add to it easily. You now have the option to report a new issue or add to an existing issue. Should you choose to add to an existing issue you should have the feedback ID of the issue available. This can be obtained from the Microsoft Connect site. For now I am going to focus on reporting a new feedback privately. Filling out the feedback details You will notice that VsInfo.xml and DxDiagOutput.txt are automatically attached as you enter this screen (more on that later).  Feedback Type Choose the feedback type from (Performance, Hang, Crash, Other) Note – The record button will only be enabled once you have enabled once you have chosen the feedback type, Bug-repro recording is not available for Windows Server 2008.     Effective Title and Description Enter a title that helps us differentiate the bug when it appears in a list, so that we can group it with any related bugs, assign it to a developer more effectively, and resolve it more quickly. Example: Imagine that you are submitting a bug because you tried to install Service Pack 1 and got a message that Visual Studio is not installed even though it is. Helpful:  Installed Visual Studio version not detected during Service Pack 1 setup. Not helpful:  Service Pack 1 problem. Tip: Write the problem description first, and then distil it to create a title. Example Description: Helpful: When I run Service Pack 1 Setup, I get the message "No Visual Studio version is detected" even though I have Visual Studio 2010 Ultimate and Visual C++ 2010 Express installed on my machine. Even though I uninstalled both editions, and then first reinstalled Ultimate and then Express, I still get the message. Record: Becoming a first class citizen Often a repro report is invaluable to describe and decipher the issue. Please use this feature to send actionable feedback. The record repro feature works differently depending on the feedback type you selected. Please find below details for each recording option. You can start recording simply by selecting a feedback type, and clicking on the “Record” button. When "Performance" is the bug type: When the Microsoft Visual Studio trace recorder starts, perform the actions that show the performance problem you want to report and then click on the "Stop Recording" button as soon as you experience the performance problem. Because the tool optimizes trace collection, you can run it for as long as it takes to show the problem, up to two hours. Note that, you need to stop recording as soon as the performance issue occurs, because the tool captures only the last couple minutes of your actions to optimize the trace collection. After you stop the recording, the tool takes up to two minutes to assemble the data and attach an ETLTrace.zip file to your bug report. The data includes information about Windows events and the Visual Studio code path. Note that, running the Microsoft Visual Studio trace recorder requires elevated user privilege. When "Crash" is the bug type: When the dialog box appears, select the running Visual Studio instance for which you want to show the steps that cause a crash. When the crash occurs, click on the "Stop Record" button. After you do this, two files are attached to your bug report - an AutomaticCrashDump.zip file that contains information about the crash and a ReproSteps.zip file that shows the repro steps. Repro steps are captured by Windows Problem Steps Recorder. Note that, you can pause the recording, and resume later, or for a specific step, you can add additional comments. When "Hang" is the bug type: The process for recording the steps that cause a hang resembles the one for crashes. The difference is, you can even collect a dump file after the VS hangs; start the VSFT either from the system tray or by starting a new instance of VS, select "Hang" as feedback type and click on the "Record" button. You will be prompted which VS to collect dump about, select the VS instance that hanged. VSFT collects a dump file regarding the hang, called MiniDump.zip, and attaches to your bug report. When "Other" is the bug type: When the problem step recorder starts, perform the actions that show the issue you want to report and then choose the "Stop” button. You can pause the recording, and resume later, or for a specific step, you can add additional comments. Once you’re done, ReproSteps.zip is added to your bug report. Pre-attached files It is essential for Microsoft to know what version of the the product are you currently using and what is the current configuration of your system. Note – The total size of all attachments in a bug report cannot exceed 2 GB, and every uncompressed attachment must be smaller than 512 MB. We recommend that you assemble all of your attachments, compress them together into a .zip file, and then attach the .zip file. Taking a screenshot Associate a screen shot by clicking the Take screenshot button, choose either the entire desktop, the specific monitor (useful if you are working in a multi monitor configuration) or the specific window in question. And finally … click Submit If you need further help, more details can be found here. You can view your feedback online by using the following URL “">https://connect.microsoft.com/VisualStudio/SearchResults.aspx?SearchQuery=<feedbackId>” Happy bug logging

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• What ever happened to the Defense Software Reuse System (DSRS)?

  - by emddudley

  I've been reading some papers from the early 90s about a US Department of Defense software reuse initiative called the Defense Software Reuse System (DSRS). The most recent mention of it I could find was in a paper from 2000 - A Survey of Software Reuse Repositories Defense Software Repository System (DSRS) The DSRS is an automated repository for storing and retrieving Reusable Software Assets (RSAs) [14]. The DSRS software now manages inventories of reusable assets at seven software reuse support centers (SRSCs). The DSRS serves as a central collection point for quality RSAs, and facilitates software reuse by offering developers the opportunity to match their requirements with existing software products. DSRS accounts are available for Government employees and contractor personnel currently supporting Government projects... ...The DoD software community is trying to change its software engineering model from its current software cycle to a process-driven, domain-specific, architecture-based, repository-assisted way of constructing software [15]. In this changing environment, the DSRS has the highest potential to become the DoD standard reuse repository because it is the only existing deployed, operational repository with multiple interoperable locations across DoD. Seven DSRS locations support nearly 1,000 users and list nearly 9,000 reusable assets. The DISA DSRS alone lists 3,880 reusable assets and has 400 user accounts... The far-term strategy of the DSRS is to support a virtual repository. These interconnected repositories will provide the ability to locate and share reusable components across domains and among the services. An effective and evolving DSRS is a central requirement to the success of the DoD software reuse initiative. Evolving DoD repository requirements demand that DISA continue to have an operational DSRS site to support testing in an actual repository operation and to support DoD users. The classification process for the DSRS is a basic technology for providing customer support [16]. This process is the first step in making reusable assets available for implementing the functional and technical migration strategies. ... [14] DSRS - Defense Technology for Adaptable, Reliable Systems URL: http://ssed1.ims.disa.mil/srp/dsrspage.html [15] STARS - Software Technology for Adaptable, Reliable Systems URL: http://www.stars.ballston.paramax.com/index.html [16] D. E. Perry and S. S. Popovitch, “Inquire: Predicate-based use and reuse,'' in Proceedings of the 8th Knowledge-Based Software Engineering Conference, pp. 144-151, September 1993. ... Is DSRS dead, and were there any post-mortem reports on it? Are there other more-recent US government initiatives or reports on software reuse?

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• JPA 2.1 Schema Generation (TOTD #187)

  - by arungupta

  This blog explained some of the key features of JPA 2.1 earlier. Since then Schema Generation has been added to JPA 2.1. This Tip Of The Day (TOTD) will provide more details about this new feature in JPA 2.1. Schema Generation refers to generation of database artifacts like tables, indexes, and constraints in a database schema. It may or may not involve generation of a proper database schema depending upon the credentials and authorization of the user. This helps in prototyping of your application where the required artifacts are generated either prior to application deployment or as part of EntityManagerFactory creation. This is also useful in environments that require provisioning database on demand, e.g. in a cloud. This feature will allow your JPA domain object model to be directly generated in a database. The generated schema may need to be tuned for actual production environment. This usecase is supported by allowing the schema generation to occur into DDL scripts which can then be further tuned by a DBA. The following set of properties in persistence.xml or specified during EntityManagerFactory creation controls the behaviour of schema generation. Property Name Purpose Values javax.persistence.schema-generation-action Controls action to be taken by persistence provider "none", "create", "drop-and-create", "drop" javax.persistence.schema-generation-target Controls whehter schema to be created in database, whether DDL scripts are to be created, or both "database", "scripts", "database-and-scripts" javax.persistence.ddl-create-script-target, javax.persistence.ddl-drop-script-target Controls target locations for writing of scripts. Writers are pre-configured for the persistence provider. Need to be specified only if scripts are to be generated. java.io.Writer (e.g. MyWriter.class) or URL strings javax.persistence.ddl-create-script-source, javax.persistence.ddl-drop-script-source Specifies locations from which DDL scripts are to be read. Readers are pre-configured for the persistence provider. java.io.Reader (e.g. MyReader.class) or URL strings javax.persistence.sql-load-script-source Specifies location of SQL bulk load script. java.io.Reader (e.g. MyReader.class) or URL string javax.persistence.schema-generation-connection JDBC connection to be used for schema generation javax.persistence.database-product-name, javax.persistence.database-major-version, javax.persistence.database-minor-version Needed if scripts are to be generated and no connection to target database. Values are those obtained from JDBC DatabaseMetaData. javax.persistence.create-database-schemas Whether Persistence Provider need to create schema in addition to creating database objects such as tables, sequences, constraints, etc. "true", "false" Section 11.2 in the JPA 2.1 specification defines the annotations used for schema generation process. For example, @Table, @Column, @CollectionTable, @JoinTable, @JoinColumn, are used to define the generated schema. Several layers of defaulting may be involved. For example, the table name is defaulted from entity name and entity name (which can be specified explicitly as well) is defaulted from the class name. However annotations may be used to override or customize the values. The following entity class: @Entity public class Employee {    @Id private int id;    private String name;     . . .     @ManyToOne     private Department dept; } is generated in the database with the following attributes: Maps to EMPLOYEE table in default schema "id" field is mapped to ID column as primary key "name" is mapped to NAME column with a default VARCHAR(255). The length of this field can be easily tuned using @Column. @ManyToOne is mapped to DEPT_ID foreign key column. Can be customized using JOIN_COLUMN. In addition to these properties, couple of new annotations are added to JPA 2.1: @Index - An index for the primary key is generated by default in a database. This new annotation will allow to define additional indexes, over a single or multiple columns, for a better performance. This is specified as part of @Table, @SecondaryTable, @CollectionTable, @JoinTable, and @TableGenerator. For example: @Table(indexes = {@Index(columnList="NAME"), @Index(columnList="DEPT_ID DESC")})@Entity public class Employee {    . . .} The generated table will have a default index on the primary key. In addition, two new indexes are defined on the NAME column (default ascending) and the foreign key that maps to the department in descending order. @ForeignKey - It is used to define foreign key constraint or to otherwise override or disable the persistence provider's default foreign key definition. Can be specified as part of JoinColumn(s), MapKeyJoinColumn(s), PrimaryKeyJoinColumn(s). For example: @Entity public class Employee {    @Id private int id;    private String name;    @ManyToOne    @JoinColumn(foreignKey=@ForeignKey(foreignKeyDefinition="FOREIGN KEY (MANAGER_ID) REFERENCES MANAGER"))    private Manager manager;     . . . } In this entity, the employee's manager is mapped by MANAGER_ID column in the MANAGER table. The value of foreignKeyDefinition would be a database specific string. A complete replay of Linda's talk at JavaOne 2012 can be seen here (click on CON4212_mp4_4212_001 in Media). These features will be available in GlassFish 4 promoted builds in the near future. JPA 2.1 will be delivered as part of Java EE 7. The different components in the Java EE 7 platform are tracked here. JPA 2.1 Expert Group has released Early Draft 2 of the specification. Section 9.4 and 11.2 provide all details about Schema Generation. The latest javadocs can be obtained from here. And the JPA EG would appreciate feedback.

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• Strangling the life out of Software Testing

  - by MarkPearl

  I recently did a course at the local university on Software Engineering. At the beginning of the course I looked over the outline of the subject and there seemed to be some really good content. It covered traditional & agile project methodologies, some general communication and modelling chapters and finished off with testing. I was particularly excited to see the section on testing as this was something I learnt on my own and see great value in. The course has now just ended and I am very disappointed. I now know one of the reasons why so few people i.e. in my region do Test Driven Development, or perform even basic testing methodologies. The topic was to academic! Yes, you might be able to list 4 different types of black box test approaches vs. white box test approaches and describe the characteristics of Smoke Tests, but never during course did we see an example of an actual test or how it might be implemented! In fact, if I did not have personal experience of applying testing in actual projects, I wouldn’t even know what a unit test looked like. Now, what worries me is the following… It took us 6 months to cover the course material, other students more than likely came out of that course with little appreciation of the subject – in fact they now have a very complex view of what a test is – so complex that I think most of them will never attempt it again on their own. Secondly, imagine studying to be a dentist without ever actually seeing a tooth? Yes, you might be able to describe a tooth, and know what it is made out of – but nobody would want a dentist who has never seen a tooth to operate on them. Yet somehow we expect people studying software engineering to do the same? This is not right. Now, before I finish my rant let me say that I know this is not the same everywhere in the world, and that there needs to be a balance on practical implementation and academic understanding – I am just disappointed that this does not seem to be happening at the institution that I am currently studying at ;-( Please, if you happen to be a lecturer or teacher reading this post – a combination of theory and practical's goes a long way. We need to up the quality of software being produced and that starts at learner level!

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• How do I server multiple domains from the same directory and codebase without my configuraton breaking when apache.conf is overwritten?

  - by neokio

  I have 20 domains on a VPS running cPanel. One public_html is filled with code, the remaining 19 are symbolic links to that one. (For example, assets is a directory within public_html ... for the 19 others, there's a symbolic link to that directory in each each accounts public_html dir.) It's all PHP / MySQL database driven, with content changing depending on the domain. It works like a charm, assuming cPanel has suExec enabled correctly, and assuming apache.conf does NOT have SymLinksIfOwnerMatch enabled. However, every few weeks, my apache.conf is mysteriously overwritten, re-enabling SymLinksIfOwnerMatch, and disabling all 19 linked sites for as long as it takes for me to notice. Here's the offending line in apache.conf: <Directory "/"> AllowOverride All Options ExecCGI FollowSymLinks IncludesNOEXEC Indexes SymLinksIfOwnerMatch </Directory> The addition of SymLinksIfOwnerMatch disables the sites in a strange way ... the html is generated correctly, but all css/js/image in the html fails to load. Clicking any link redirects to /. And I have no idea why. I do have a few things in my .htaccess, which work fine when SymLinksIfOwnerMatch is not present: <IfModule mod_rewrite.c> # www.example.com -> example.com RewriteCond %{HTTPS} !=on RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC] RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L] # Remove query strings from static resources RewriteRule ^assets/js/(.*)_v(.*)\.js /assets/js/$1.js [L] RewriteRule ^assets/css/(.*)_v(.*)\.css /assets/css/$1.css [L] RewriteRule ^assets/sites/(.*)/(.*)_v(.*)\.css /assets/sites/$1/$2.css [L] # Block access to hidden files and directories RewriteCond %{SCRIPT_FILENAME} -d [OR] RewriteCond %{SCRIPT_FILENAME} -f RewriteRule "(^|/)\." - [F] # SLIR ... reroute images to image processor RewriteCond %{REQUEST_URI} ^/images/.*$ RewriteRule ^.*$ - [L] # ignore rules if URL is a file RewriteCond %{REQUEST_FILENAME} !-f # ignore rules if URL is not php #RewriteCond %{REQUEST_URI} !\.php$ # catch-all for routing RewriteRule . index.php [L] </ifModule> I also use most of the 5G Blacklist 2013 for protection against exploits and other depravities. Again, all of this works great, except when SymLinksIfOwnerMatch gets added back into apache.conf. Since I've failed to find the cause of whatever cPanel/security update is overwriting apache.conf, I thought there might be a more correct way to accomplish my goal using group permissions. I've created a 'www' group, added all accounts to the group, and chmod -R'd the code source to use that group. Everything is 644 or 755. But doesn't seem to be enough. My unix isn't that strong. Do you need to restart something for group changes to take effect? Probably not. Anyways, I'm entering unknown territory. Can anyone recommend the right way to configure a website for multiple sites using one codebase that doesn't rely on apache.conf?

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• Should I use my own public API on my site (via JS)?

  - by newboyhun

  First of all, this question is far more different other 'public api questions' like this: Should a website use its own public API?, second, sorry for my English. You can find the question summarized at the bottom of this question. What I want to achieve is a big website with a public api, so who like programming (like me) and likes my website, can replicate my website's data with a much better approach (of course with some restrictions). Almost everything could be used by the public API. Because of this, I was thinking about making the whole website AJAX driven. There would be parts of the API which would be limited only to my website (domain), like login, registering. There would be only an INTERFACE on the client side, which would use the public and private API to make this interface working. The website would be ONLY CLIENT SIDE, well, I mean, the website would only use AJAX to use the api. How do I imagine this? The website would be like a mobile application, the application only sending a request to a webserver, which returns a json, the application parses it, and uses it to advance in the application. (e.g.: login) My thoughts: Pros: The whole website is built up by javascript, this means I don't need to transfer the html to the client, saving bandwidth. (I hope so) Anyone can use up the data of my website to make their own cool things. (Is this a con or pro? O_O) The public API is always in use, so I can see if there are any error. Cons: Without Javascript the website is unusable. The bad guys easily can load the server with requesting too much data (like Request Per Second 10000), but this can be countered via limiting this with some PHP code and logging. Probably much more work So the question in some words is: Should I build my website around my own api? Is it good to work only on the client side? Is this good for a big website? (e.x.: facebook, yeah facebook is a different story, but could it run with an 'architecture' like this?)

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• 501 Error during Libjingle PCP on Amazone EC2 running Openfire

  - by AeroBuffalo

  I am trying to implement Google's Libjingle (version: 0.6.14) PCP example and I am getting a 501: feature not implemented error during execution. Specifically, the error occurs after each "account" has connected, been authenticated and began communicating with the other. An abbreviated log of the interaction is provided at the end. I have set up my own jabber server (using OpenFire on an Amazon EC2 server), have opened all of the necessary ports and have added each "account" to the other's roster. The server has been set to allow for file transfers. My being new to working with servers, I am not sure why this error is occur and how to go about fixing it. Thanks in advance, AeroBuffalo P.S. Let me know if there is any additional information needed (i.e. the full program log for either/both ends). Receiving End: [018:217] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [018:217] <iq to="[email protected]/pcp" type="set" id="5"> [018:217] <jingle xmlns="urn:xmpp:jingle:1" action="session-initiate" sid="402024303" initiator="[email protected]/pcp"> [018:217] <content name="securetunnel" creator="initiator"> [018:217] <description xmlns="http://www.google.com/talk/securetunnel"> [018:217] <type>send:winein.jpeg</type> [018:217] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [018:217] </description> [018:217] <transport xmlns="http://www.google.com/transport/p2p"/> [018:217] </content> [018:217] </jingle> [018:217] <session xmlns="http://www.google.com/session" type="initiate" id="402024303" initiator="[email protected]/pcp"> [018:217] <description xmlns="http://www.google.com/talk/securetunnel"> [018:217] <type>send:winein.jpeg</type> [018:217] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [018:217] </description></session> [018:217] </iq> [018:217] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:217] <presence to="[email protected]/pcp" from="forgesend" type="error"> [018:217] <error code="404" type="cancel"> [018:217] <remote-server-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [018:217] </error></presence> [018:218] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:218] <presence to="[email protected]/pcp" from="forgesend" type="error"> [018:218] <error code="404" type="cancel"> [018:218] <remote-server-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [018:218] </error></presence> [018:264] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:264] <iq type="result" id="3" to="[email protected]/pcp"> [018:264] <query xmlns="google:jingleinfo"> [018:264] <stun> [018:264] <server host="stun.xten.net" udp="3478"/> [018:264] <server host="jivesoftware.com" udp="3478"/> [018:264] <server host="igniterealtime.org" udp="3478"/> [018:264] <server host="stun.fwdnet.net" udp="3478"/> [018:264] </stun> [018:264] <publicip ip="65.101.207.121"/> [018:264] </query></iq> [018:420] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:420] <iq to="[email protected]/pcp" type="set" id="5" from="[email protected]/pcp"> [018:420] <jingle xmlns="urn:xmpp:jingle:1" action="session-initiate" sid="3548650675" initiator="[email protected]/pcp"> [018:420] <content name="securetunnel" creator="initiator"> [018:420] <description xmlns="http://www.google.com/talk/securetunnel"> [018:420] <type>recv:wineout.jpeg</type> [018:420] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [018:420] </description> [018:420] <transport xmlns="http://www.google.com/transport/p2p"/> [018:420] </content></jingle> [018:420] <session xmlns="http://www.google.com/session" type="initiate" id="3548650675" initiator="[email protected]/pcp"> [018:420] <description xmlns="http://www.google.com/talk/securetunnel"> [018:420] <type>recv:wineout.jpeg</type> [018:420] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [018:420] </description></session></iq> [018:421] TunnelSessionClientBase::OnSessionCreate: received=1 [018:421] Session:3548650675 Old state:STATE_INIT New state:STATE_RECEIVEDINITIATE Type:http://www.google.com/talk/securetunnel Transport:http://www.google.com/transport/p2p [018:421] TunnelSession::OnSessionState(Session::STATE_RECEIVEDINITIATE) [018:421] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [018:421] <iq to="[email protected]/pcp" id="5" type="result"/> [018:465] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:465] <iq to="[email protected]/pcp" id="5" type="result" from="[email protected]/pcp"/> [198:665] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:20:15 2012 [198:665] <iq type="get" id="162-10" from="forgejabber.com" to="[email protected]/pcp"> [198:665] <ping xmlns="urn:xmpp:ping"/> [198:665] /iq> [198:665] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:20:15 2012 [198:665] <iq type="error" id="162-10" to="forgejabber.com"> [198:665] <ping xmlns="urn:xmpp:ping"/> [198:665] <error code="501" type="cancel"> [198:665] <feature-not-implemented xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [198:665] </error> [198:665] </iq> Sender: [019:043] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [019:043] <iq type="get" id="3"> [019:043] <query xmlns="google:jingleinfo"/> [019:043] </iq> [019:043] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [019:043] <iq to="[email protected]/pcp" type="set" id="5"> [019:043] <jingle xmlns="urn:xmpp:jingle:1" action="session-initiate" sid="3548650675" initiator="[email protected]/pcp"> [019:043] <content name="securetunnel" creator="initiator"> [019:043] <description xmlns="http://www.google.com/talk/securetunnel"> [019:043] <type>recv:wineout.jpeg</type> [019:043] <client-cert>--BEGIN CERTIFICATE----END CERTIFICATE--</client-cert> [019:043] </description> [019:043] <transport xmlns="http://www.google.com/transport/p2p"/> [019:043] </content> [019:043] </jingle> [019:043] <session xmlns="http://www.google.com/session" type="initiate" id="3548650675" initiator="[email protected]/pcp"> [019:043] <description xmlns="http://www.google.com/talk/securetunnel"> [019:043] <type>recv:wineout.jpeg</type> [019:043] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [019:043] </description></session></iq> [019:043] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:043] <presence to="[email protected]/pcp" from="forgereceive" type="error"> [019:043] <error code="404" type="cancel"> [019:043] <remote-server-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [019:043] </error></presence> [019:044] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:044] <presence to="[email protected]/pcp" from="forgereceive" type="error"> [019:044] <error code="404" type="cancel"> [019:044] <remote-server-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [019:044] </error></presence> [019:044] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:044] <iq to="[email protected]/pcp" type="set" id="5" from="[email protected]/pcp"> [019:044] <jingle xmlns="urn:xmpp:jingle:1" action="session-initiate" sid="402024303" initiator="[email protected]/pcp"> [019:044] <content name="securetunnel" creator="initiator"> [019:044] <description xmlns="http://www.google.com/talk/securetunnel"> [019:044] <type>send:winein.jpeg</type> [019:044] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [019:044] </description> [019:044] <transport xmlns="http://www.google.com/transport/p2p"/> [019:044] </content></jingle> [019:044] <session xmlns="http://www.google.com/session" type="initiate" id="402024303" initiator="[email protected]/pcp"> [019:044] <description xmlns="http://www.google.com/talk/securetunnel"> [019:044] <type>send:winein.jpeg</type> [019:044] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [019:044] </description></session></iq> [019:044] TunnelSessionClientBase::OnSessionCreate: received=1 [019:044] Session:402024303 Old state:STATE_INIT New state:STATE_RECEIVEDINITIATE Type:http://www.google.com/talk/securetunnel Transport:http://www.google.com/transport/p2p [019:044] TunnelSession::OnSessionState(Session::STATE_RECEIVEDINITIATE) [019:044] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [019:044] <iq to="[email protected]/pcp" id="5" type="result"/> [019:088] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:088] <iq type="result" id="3" to="[email protected]/pcp"> [019:088] <query xmlns="google:jingleinfo"> [019:088] <stun> [019:088] <server host="stun.xten.net" udp="3478"/> [019:088] <server host="jivesoftware.com" udp="3478"/> [019:088] <server host="igniterealtime.org" udp="3478"/> [019:088] <server host="stun.fwdnet.net" udp="3478"/> [019:088] </stun> [019:088] <publicip ip="65.101.207.121"/> [019:088] </query> [019:088] </iq> [019:183] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:183] <iq to="[email protected]/pcp" id="5" type="result" from="[email protected]/pcp"/> [199:381] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:20:15 2012 [199:381] <iq type="get" id="474-11" from="forgejabber.com" to="[email protected]/pcp"> [199:381] <ping xmlns="urn:xmpp:ping"/> [199:381] </iq> [199:381] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:20:15 2012 [199:381] <iq type="error" id="474-11" to="forgejabber.com"> [199:381] <ping xmlns="urn:xmpp:ping"/> [199:381] <error code="501" type="cancel"> [199:381] <feature-not-implemented xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [199:382] </error></iq>

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• Help configuring Mercury mail or similiar with XAMPP to send e-mail outside of localhost

  - by user291040

  I'm building a PHP/MySQL driven website for my department at work (installed via XAMPP). I need to be able to send mail to outside e-mail addresses (e.g., Yahoo, Hotmail, etc.) using the PHP mail() function. As I see it I have to solutions: Configure the SMTP directive in php.ini to the server running at my work. Configure/run a mail server that can send e-mails outside of localhost (I'm trying Mercury because it comes installed with XAMPP). Here are problems I've come up against: I took a guess at our SMTP server name, and when calling PHP mail(), I get the error SMTP server response: 530 5.7.1 Client was not authenticated I can't be sure, however, the SMTP name is correct (I can't get help from our IT guys because of politics). I have tried to use mercury mail. Mercury seems to be picking up the request, but it doesn't want to forward the e-mail to the outside. I keep getting a Temporary error 240 (temporary MX resolution error). I've searched high and low but still can't find a definitive answer on how to send e-mails outside of localhost. Any help is greatly appreciated.

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• Drop outs when accessing share by DFS name.

  - by Stephen Woolhead

  I have a strange problem, aren't they all! I have a DFS root \domain\files\vms, it has a single target on a different server than the namespace. I can copy a test file set from the target directly via \server\vms$\testfiles and all is well, the files copy fine. I have repeated these tests many times. If I try and copy the files from the dfs root I get big pauses in the network traffic, about 50 seconds every couple of minutes, all the traffic just stops for the copy. If I start another copy between the same two machines during this pause, it starts copying fine, so I know it's not an issue with the disks on the server. Every once in a while the copy will fail, no errors, the progress bar will just zip all the way to 100% and the copy dialog will close. Checking the target folder show that the copy is incomplete. I've moved the LUN to another server and had the same problem. The servers are all 2008 R2, the clients are Vista x64, Windows7 x64 and 2008 R2, all have the same problem. Anyone got any ideas? Cheers, Stephen More Information: I've been running a NetMon trace on the connection when the file copy fails and what seems to be standing out is that when opening a file that the copy completes on the SMB command looks like this: SMB2: C CREATE (0x5), Name=Training\PDC2008\BB34 Live Services Notifications, Awareness, and Communications.wmv@#422082, Context=DHnQ, Context=MxAc, Context=QFid, Context=RqLs, Mid = 245376 SMB2: R CREATE (0x5), Context=MxAc, Context=RqLs, Context=DHnQ, Context=QFid, FID=0xFFFFFFFF00000015, Mid = 245376 But for the last file when the copy dialog closes looks like this: SMB2: C CREATE (0x5), Name=gt\files\Media\Training\PDC2008\BB36 FAST Building Search-Driven Portals with Microsoft Office SharePoint Server 2007 and Microsoft Silverlight.wmv@#859374, Context=DHnQ, Context=MxAc, Context=QFid, Context=RqLs, Mid = 77 SMB2: R , Mid = 77 - NT Status: System - Error, Code = (58) STATUS_OBJECT_PATH_NOT_FOUND The main difference seems to be in the name, one is relative to the open file share, the other has gained the gt\files\media prefix which is the name of the DFS target. These failures are always preceded by logoff and back on of the SMB target. Might have to bump this one to PSS.

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• Benchmarking a file server

  - by Joel Coel

  I'm working on building a new file server... a simple Windows Server box with a few terabytes of disk space to share on the LAN. Pain for current hard drive prices aside :( -- I would like to get some benchmarks for this device under load compared to our old server. The old server was installed in 2005 and had 5 136GB 10K disks in RAID 5. The new server has 8 1TB disks in two RAID 10 volumes (plus a hot spare for each volume), but they're only 7.2K rpm, and of course with a much larger cache size. I'd like to get an idea of the performance expectations of the new server relative to the old. Where do I get started? I'd like to know both raw potential under different kinds of load for each server, as well an idea of what our real-world load looks like and how it will translate. Will disk load even matter, or will performance be more driven by the network connection? I could probably fumble through some disk i/o and wait counters in performance monitor, but I don't really know what to look for, which counters to watch, or for how long and when. FWIW, I'm expecting a nice improvement because of the benefits of having two different volumes and the better RAID 10 performance vs RAID 5, in spite of using slower disks... but I'd like to get an idea of how much.

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• remote telnet and email

  - by Mustafa Ismail Mustafa

  This issue has been occupying my work for the last few days and I will be understating when I say its driven me up the blasted walls. Essentially, I can ping and tracert the domain jnrcs.org and the subdomains mail.jnrcs.org and mail.jordanredcrescent.org. All three mentioned point to ip address 212.38.147.97. About 4 days ago, when we registered the domain "jnrcs.org" suddenly all external connection to the mail server from outside was lost. Not just mail, but other http based port-forwarded or natted services (such as camera surveillance and pbx services). I tried good old telnet (I'm a linux user) and I get the following output: telnet> o mail.jnrcs.org 25 Trying 212.38.147.97... telnet: Unable to connect to remote host: No route to host telnet> Tracert gives me: traceroute to mail.jnrcs.org (212.38.147.97), 30 hops max, 60 byte packets 1 192.168.1.2 (192.168.1.2) 0.869 ms 0.944 ms * 2 * * * 3 * * * 4 * * * 5 * * * 6 * 212.38.128.118 (212.38.128.118) 33.875 ms 39.187 ms 7 * * * 8 * * * 9 * * * 10 * * * 11 * * 212.38.147.97 (212.38.147.97) 67.621 ms I am stumped. Other friends from all around the world can telnet no problem. What could have possibly happened to make telnet/smtp/pop/imap/http access stop? Please bear in mind I'm primarily a developer but I [am under the delusion] that I can carry my weight in IT administration :) TIA

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• Is there a way to "burn" audio to an ISO? (as an audio CD)

  - by Sootah

  I have an audiobook that I've downloaded via their download manager, and it's loaded into their cutesy little audio program that they force you to use. I can play the book just fine using their proprietary software, and while it's annoying when using my PC, it's utterly UNBEARABLE when I try to listen to it on my Blackberry. The program is INSANELY slow, it literally takes around 30 seconds to switch between tracks, so if I've forgotten where I am in the book it takes me around 15 minutes to finally get to where I was at. I've looked everywhere on how to transcode the book to .MP3, but evidently with their current format it's either extremely convoluted (and I have no desire to dick around with installing some older version of the codec, getting a different transcoding app, and then wrestling with getting it to actually work). Since I'm able to burn a copy of the book to an audio CD, I figure the best way to go about this is to just make the CDs and then rip them off of those to .MP3. In order to avoid wasting two hours, not to mention 14 CD-R's, I was wondering if there's a way to "burn" to an .ISO instead of an actual CD-R. I currently have SlySoft's Virtual CloneDrive installed, so I can mount .ISO's easily enough, but now I want to actually create an ISO via the CD burning process. Just in case I've not explained myself very well, here is an overview of what I intend to do: "Burn" a set of Audio CD .ISOs from the audiobook (hopefully I can do this using Windows Media Player, otherwise I'll be forced to use the audiobook app) Mount an .ISO in Virtual CloneDrive Rip the audio tracks on the mounted .ISO to .MP3s Repeat steps 2-3 until the entire book is in .MP3 format Copy .MP3s to my Blackberry so that I'm not driven insane every time I want to listen to the book in the car, and be able to use Winamp when listening on my computer EDIT: I'd suppose a rather concise way to put it is that I need something that will emulate a CD-R drive, so that you can select it as the output drive in whatever app your burning the audio CD from. (I'd suppose that when you "insert a blank CD-R" the app would then ask you what file to save to)

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• how to cause linux system datetime to run faster than real world datetime?

  - by JamesThomasMoon1979

  Background I want to monitor a running linux system over several days. It's a custom gentoo build and with much custom software on board. This software has ongoing maintenance timers and cron scripts and other clock driven events. I need to verify these scheduled events are working. Problem Waiting for the system to step through daily and weekly activity is a long wait time. And modifying all clock-based timers on the system would be time consuming. Yet, I often want to test a system's end-to-end scheduled activities without waiting a week. Potential Solution Have the linux system under test appear to run through it's daily cycle of activity within just a few hours. My Question for Serverfault Is there a way to cause the system's time to run faster than real world time? My first thought is manipulating the ntp daemon to repeatedly and smoothly increment the clock . Any other ideas? And yes, I know this may have strange side affects. However, the system has no important or time critical interactions with systems outside of itself. And this may be a valuable testing technique.

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• Data recovery on a corrupted 3TB disk

  - by Mark K Cowan

  Short version I probably need software to run a deep-scan recovery (ideally on Linux) to find files on NTFS filesystem. The file data is intact, but the references are no longer present. Analogous to recovering data from a "quick-formatted" partition. Hopefully there is a smarter way available than deep-scan, one which would recover filenames and possibly paths. Long version I have a 3TB disk containing a load of backups. Windows 7 SP1 refused to detect the disk when plugged in directly via SATA, so I put it on a USB/SATA adaptor which seemed to work at first. The SATA/USB adaptor probably does not support disks over 2.2TB though. Windows first asked me if I wanted to 'format' the disk, then later showed me most of the contents but some folder were inaccessible. I stupidly decided to run a CHKDSK on my backup disk, which made the folders accessible but also left them empty. I connected this disk via SATA to my main PC (Arch Linux). I tried: testdisk ntfsundelete ntfsfix --no-action (to look for diagnostically relevant faults, disk was "OK" though) to no avail as the files references in the tables had presumably been zeroed out by CHKDSK, rather than using a typical journal'd deletion). If it is useful at all, a majority of the files that I want to recover are JPEG, Photoshop PSD, and MPEG-3/MPEG-4/AVI/MKV files. If worst comes to worst, I'll just design my own sector scanner and use some simple heuristic-driven analysis to recover raw binary blocks of data from the disk which appears to match the structures of the above file types. I am unfamiliar with the exact workings of NTFS but used to be proficient at recovering FAT32 systems with just a hex-editor, so I can provide any useful diagnostic information if you let me know how to find it! My priorities in ascending order of importance for choosing the accepted answer: Restores directory structure Recovers many filenames in addition to the file data Is free / very cheap Runs on Linux Recovers a majority of file data The last point is the most important, but the more of the higher points you match the more rep you'll probably get :)

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• Backup strategy for developer-focused Apple environments?

  - by ewwhite

  It's interesting to see the technological split between structured corporate environments and more developer-driven/startup environments. Some of the Microsoft technologies I take for granted (VSS, Folder Redirection, etc.) simply are not available when managing the increasing number of Apple laptops I see in DevOps shops. I'm interested in centralized and automated backup strategies for a group of 30-40 Apple laptops... How is this typically done safely and securely, assuming these are company-owned machines (versus BYOD)? While Apple has Time Machine, it's geared toward individual computer backups and doesn't seem to work reliably in a group setting. Another issue with these workstations is the presence of Vagrant/Virtual Box VMs on the developers' systems. Time Machine and virtual machines typically don't work well unless the VMs are excluded from the backup set. I'd like a push-based backup process with some flexible scheduling options. I know how to handle the backend storage, but I'm not sure on what needs to be presented to the client systems. Due to the nature of the data here, cloud-based backup may not be a viable option. Any suggestions about how you handle this in your environment would be appreciated. Edit: The virtual machine backups are no longer important. They can be excluded from the process and planning.

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• SATA HDD stuttering on reads (LED on)

  - by jdehaan

  I hope I can get some new ideas to solve the issue. What I have: AMD Phenom II X4 905e Box, Sockel AM3 Gigabyte GA-MA790XTA-UD4, AMD 790X, AM3 ATX WD Caviar GreenPower 1,5TB SATA II 4GB Kit OCZ DDR3 PC3-10666 Platinum Low-Voltage CL7 HIS HD 4670 iSilence4 DDR3 1024MB Native HDMI Dual-DVI, PCI-Express Behavior: Everything works normally excepting the HDD accesses. The drive seems to get stuck in reading data (LED drive by Mainboard is on for a while) then recovers and goes on. There is a delay of more than 30s sometimes. Often it is a matter of 5-10s. This does not seem related to the workload of the disk. What I tried so far: Use different SATA port: I switched from the SATA3 to SATA2 then the SATA driven by the CPU, no difference. Turned AHCI off, drove the SATA in IDE mode, same behavior, now I felt like the HDD has problems Deactivated energy saving settings (BeQuiet, ...), disabled 3 CPUs (msconfig) supposing some race condition or trouble with changing freqs, same trouble With Windows7 Professional 64Bit, I installed the hotfix http://support.microsoft.com/?scid=kb%3Ben-us%3B976418&x=8&y=9 with no success. The problem description matches what I experienced, so I felt lucky but was quite in a sad mood after being deceived. Burned the DLG 5.04f DataLifeGuard CD from WD to check the drive. All tests passed, to my surprise! Installed an Ubuntu on the same drive i386 flavour. Drive still in IDE mode, exactly the same behavior. So the OS does not matter. What I did not try yet: http://www.gigabyte.eu/Support/Motherboard/BIOS_Model.aspx?ProductID=3263 I have a F2 BIOS and there is a F3a Beta, did someone have similar issues that were solved by this update? It is a beta so I fear upgrading a bit and I could find no release notes at all on the net, not really serious work maybe they had issues translating from Chinese??? Using another HDD drive Does someone have other hints or a similar issue? Maybe it is neither the HDD nor the Mainboard/BIOS?

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• Application to automate Windows software installation in a test lab

  - by Marc

  I have several test environments (hyper-V) which contain a variety of windows servers. Each machine needs periodically rolling back to a given snapshot and then re-installing with the latest version of our software to test. The software installs are quite complex MSI's with a fair few option screens. I know that the installs can be driven from the command line, passing in parameters to override the wizard options. At the simplest level I suppose I could just write a batch file to kick off each install with the required parameters, however the values that are passed in do need to change from time to time (and environment to environment) so a tool with a config file and simple GUI seems like a better idea. I think what makes it slightly more painful is the multiple environments. For example one environment might contain 4 servers and need a config file with all the server names, service endpoints etc. Another environment might be a 1-box install with all names and endpoints set to localhost. So, ideally I want to be able to store different setup configurations and use them to run all the required installers with the relevant settings against the relevant machines. Before I go off to write the thing, does anyone know of an existing, simple, free tool that will let me achieve this?

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• Microsoft Arc Mouse OS X

  - by meepz

  I recently bought a new Mac Book Pro with Mountain Lion 10.8 on it. The only portable mouse I have is my Microsoft Arc Mouse. I wanted to use it with the laptop so I installed the IntelliPoint 8.2 for Mac from Microsofts website. According to their website, this driver is for OS X 10.4-10.7. Now I thought that wouldnt be too much of an issue but unfortunately for me, the driver installs fine and the mouse is detected but I get no movement and when I click the buttons nothing happens. I took the mouse with me on a business trip to EU and before I left I checked if the mouse worked with my desktop which is running Windows 7 and it worked without any hiccups. I'm not too sure where the OS differs from 10.7 to 10.8. I found an article online but it doesn't pertain to my mouse, although it could be of assistance. I have tried my version of their adjustment but I am not too knowledgable on low level hardware/software modifications so I may have done it wrong. heres the link: http://refluxions.wordpress.com/2008/08/18/mac-os-x-mouse-madnessfixed/ I get the following details when I check mouse info in the IntelliPoint preferences pane: The following Microsoft mouse devices are currently connected to your Macintosh driven by the Intellipoint software. Arc Mouse Vendor name: Microsoft Product name: Microsoft AE 2.4GHz Transceiver 5.0 Vendor ID: 045E Product ID: 074F Device version: 0140 if anyone has any suggestions on how to fix this it would be greatly appreciated! I love the mouse and im here in EU for another two weeks. Thanks

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• LDAP, Active Directory and bears, oh my!

  - by Tim Post

  What I have: Workstations running Ubuntu Jaunty mounting /home on a remote NFS server. User accounts are still created locally on each individual workstation. Workstations running Windows XP / Vista NFS server (as noted above) Windows 2008 server All machines share a single private network (LAN). What I need to accomplish: A single, intuitive (GUI driven) place for an office administrator to create user accounts. This should let anyone login to their (linux or windows) workstation, then fire up remote desktop and use the same login to the Windows 2008 server, from any machine on the network. I have read so much on samba, LDAP vs AD, etc and now I'm even more confused than I was before I began researching the problem. Ideally, Linux and Windows users should be able to get to their local files once logged into the Win2008 server. I am a programmer, not an interoperability guru and I'm completely lost on where to even start trying to accomplish this, plus I've run out of things to Google. How would you do this? Is it even possible?

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• SQL Server architecture - they want to move my database to new instance...Why?

  - by O'MALLEY

  Our current production database environment contains about 10 similarily managed databases. Our agency has just purchased and is installing new blade chasses and wants to move my database to a new instance (leaving the other 9 on another). This decision is being driven by one of our IT staff, not a DBA. I am a project manager, not a DBA but I know enough to not necesarrily have a good feeling about this decision and I am urging our IT department to make a sound decision based on what is best for the database. Our IT department has stated that it is not good to have all our eggs in one basket, and has also stated that my database contains "regulatory data" so it should be on its own instance. A couple of truths: - None of the databases on the current instance are OLTP databases nor are any of them data warehouses - My database currently has joins/views to a couple of the other databases in the production environment So my questions are as follows: Am I wrong to disregard a statement about eggs in baskets? (hello, this is why we have maintenance plans/disaster recovery plans). I'll mention that other databases also have regulatory data too. What types of questions do I need to ask to determine if this is a sound decicion? (A DBA friend mentioned that if the service level agreement of said database does not radically differ from the others then why do they want to do this?) I have done some research on linked servers. What arguments should I bring forth about the fact that I have views setup that rely on data from other DBs currently?

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• Scaling databases with cheap SSD hard drives

  - by Dennis Kashkin

  Hey guys! I hope that many of you are working with high traffic database-driven websites, and chances are that your main scalability issues are in the database. I noticed a couple of things lately: Most large databases require a team of DBAs in order to scale. They constantly struggle with limitations of hard drives and end up with very expensive solutions (SANs or large RAIDs, frequent maintenance windows for defragging and repartitioning, etc.) The actual annual cost of maintaining such databases is in $100K-$1M range which is too steep for me :) Finally, we got several companies like Intel, Samsung, FusionIO, etc. that just started selling extremely fast yet affordable SSD hard drives based on SLC Flash technology. These drives are 100 times faster in random read/writes than the best spinning hard drives on the market (up to 50,000 random writes per second). Their seek time is pretty much zero, so the cost of random I/O is the same as sequential I/O, which is awesome for databases. These SSD drives cost around $10-$20 per gigabyte, and they are relatively small (64GB). So, there seems to be an opportunity to avoid the HUGE costs of scaling databases the traditional way by simply building a big enough RAID 5 array of SSD drives (which would cost only a few thousand dollars). Then we don't care if the database file is fragmented, and we can afford 100 times more disk writes per second without having to spread the database across 100 spindles. . Is anybody else interested in this? I've been testing a few SSD drives and can share my results. If anybody on this site has already solved their I/O bottleneck with SSDs, I would love to hear your war stories! PS. I know that there are plenty of expensive solutions out there that help with scalability, for example the time proven RAM-based SANs. I want to be clear that even $50K is too expensive for my project. I have to find a solution that costs no more than $10K and does not take much time to implement.

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• User authentication -- username mismatch in IIS in ASP.NET application

  - by Cory Larson

  Last week, an employee's Active Directory username was changed (or a new one was created for them). For the purposes of this example, let's assume these usernames: Old: Domain\11111 New: Domain\22222 When this user now logs in using their new username, and attempts to browse to any one of a number of ASP.NET applications using only Windows Authentication (no Anonymous enabled), the system authenticates but our next layer of database-driven permissions prevents them from being authorized. We tracked it down to a mismatch of usernames between their logon account and who IIS thinks they are. Below are the outputs of several ASP.NET variables from apps running in a Windows 2008 IIS7.5 environment: Request.ServerVariables["AUTH_TYPE"]: Negotiate Request.ServerVariables["AUTH_USER"]: Domain\11111 Request.ServerVariables["LOGON_USER"]: Domain\22222 Request.ServerVariables["REMOTE_USER"]: Domain\11111 HttpContext.Current.User.Identity.Name: Domain\11111 System.Threading.Thread.CurrentPrincipal.Identity.Name: Domain\11111 From the above, I can see that only the LOGON_USER server variable has the correct value, which is the account the user used to log on to their machine. However, we use the "AUTH_USER" variable for looking up the database permissions. In a separate testing environment (completely different server: Windows 2003, IIS6), all of the above variables show "Domain\22222". So this seems to be a server-specific issue, like the credentials are somehow getting cached either on their machine or on the server (the former seems more plausible). So the question is: how do I confirm whether it's the user's machine or the server that is botching the request? How should I go about fixing this? I looked at the following two resources and will be giving the first one a try shortly: http://www.interworks.com/blogs/jvalente/2010/02/02/removing-saved-credentials-passwords-windows-xp-windows-vista-or-windows-7 http://stackoverflow.com/questions/2325005/classic-asp-request-servervariableslogon-user-returning-wrong-username/5299080#5299080 Thanks.

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• mod rewrite help

  - by Benny B

  Ok, I don't know regex very well so I used a generator to help me make a simple mod_rewrite that works. Here's my full URL https://www.huttonchase.com/prodDetails.php?id_prd=683 For testing to make sure I CAN use this, I used this: RewriteRule prodDetails/(.*)/$ /prodDetails.php?id_prd=$1 So I can use the URL http://www.huttonchase.com/prodDetails/683/ If you click it, it works but it completely messes up the relative paths. There are a few work-arounds but I want something a little different. https://www.huttonchase.com/prod_683_stainless-steel-flask I want it to see that 'prod' is going to tell it which rule it's matching, 683 is the product number that I'm looking up in the database, and I want it to just IGNORE the last part, it's there only for SEO and to make the link mean something to customers. I'm told that this should work, but it's not: RewriteRule ^prod_([^-]*)_([^-]*)$ /prodDetails.php?id_prd=$1 [L] Once I get the first one to work I'll write one for Categories: https://www.huttonchase.com/cat_11_drinkware And database driven text pages: https://www.huttonchase.com/page_44_terms-of-service BTW, I can flip around my use of dash and underscore if need be. Also, is it better to end the URLs with a slash or without? Thanks!

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• How to Deploy an ASP.NET Web API- and Browser-based Application to a Production Environment [closed]

  - by lmttag

  Possible Duplicate: How to Deploy an ASP.NET Web API- and Browser-based Application to a Production Environment We have an ASP.NET Web API server that serves up a SQL Server data driven website. The API uses JSON to transfer data from SQL Server to the front end. We need to move it to an internal production environment (nothing will be exposed on the public Internet) and we’re having problems - or just not understanding what needs to be done. There are two domains: The corporate domain - where all users login normally. The process domain - contains the database the Web API needs to access. The IT staff wants to put a DMZ between the two domains to house the IIS app and shield the users on the corporate domain from having access into the process domain directly. The ideal configuration is: corp domain (end users) <–> firewall (open port 80) <–> DMZ (web server running IIS) <–> firewall (open port 80 or 1433????) <–> process domain (IIS for Web API and SQL Server) We don’t really understand how to deploy our browser/Web API application in this scenario. Do we need to break up our application so that all the client code is on the IIS server in the DMZ, while the Web API gets installed on the server in the process domain? Does the entire app (client code and Web API) stay together on the IIS server in the DMZ, which then somehow accesses the SQL Server instance to get data? From the IIS server and app in the DMZ, would you simply access the Web API on the server in the process domain by going to http://server/appname/api/getitmes? In the second firewall between the DMZ and the process domain, would you have to open port 1433 or just port 80 since the Web API is a HTTP endpoint? Or, is there some better way of deployment (i.e., how ASP.NET Web API single page applications written all in HTML5 and JavaScript supposed to be deployed to production environments?)? NB: The servers are Win2k8 R2, SQL Server 2k8 R2, and IIS 7.5.

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