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• CodePlex Daily Summary for Saturday, January 15, 2011

  CodePlex Daily Summary for Saturday, January 15, 2011Popular ReleasesPeople's Note: People's Note 0.22: Fixed the recent TODO checkbox problem. If you cannot synchronize, try deleting the last note with TODO checkboxes. Fixed notes created before signing in for the first time not syncing. Made a number of small user interface improvements. To install: copy the appropriate CAB file onto your WM device and run it.Network Asset Manager: Release 1.0.9: Release notes for version 1.0.9New FeaturesAdded new report subsystem for better report handling and report history management. Added support for Network adapter discovery Added reports for low disk space, disk utilization, hardware, OS installation Some application fixes. Bug fixesArtifact ID 2979655 : Fixed issue with installed software collection on windows 64 bit. (Thanks to nielsvdc for this patch) NotesPrevious versions of NAM installations need to be manually uninstalled bef...JetBrowser: JetBrowser 5: JetBrowser 5 ( specifically Version 5.0.1.239 ) is here . I uploaded it here in codeplex because i had nowhere else to upload it . Changes made from last release : Improvements made throughout the code of JetBrowser. Bug fixes made in JetMail and the Feedback tool. Bug fixes were made in other vital points of the code and a lot of features were added. Visual parts of the JB were modified as well If you notice a but , pl...mytrip.mvc (CMS & e-Commerce): mytrip.mvc 1.0.52.0 beta 2: New MVC3 RTM WEB.mytrip.mvc 1.0.52.0 Web for install hosting System Requirements: NET 4.0, MSSQL 2008 or MySql (auto creation table to database) if .\SQLEXPRESS auto creation database (App_Data folder) SRC.mytrip.mvc 1.0.52.0 System Requirements: Visual Studio 2010 or Web Deweloper 2010 MSSQL 2008 or MySql (auto creation table to database) if .\SQLEXPRESS auto creation database (App_Data folder) Connector/Net 6.3.5, MVC3 RTM WARNING For run and debug SRC.mytrip.mvc 1.0.52.0 download and...IIS Tuner: IIS Tuner: Performance optimization tool for IISBloodSim: BloodSim - 1.3.3.0: NOTE: If you have a previous version of BloodSim, you must update WControls.dll from the Required DLLs download. - Removed average stats from main window as this is no longer necessary - Added ability to name a set of runs that will show up in the title bar of the graph window - Added ability to run progressive simulation sets, increasing up to 2 chosen stats by a value each time - Added option to set the amount that Death Strike heals for on the Last 5s Damage - Added option for Blood Shiel...WCF Community Site: WCF Web APIs 11.01.14: Welcome to the third release of WCF Web APIs on codeplex New Features - WCF HTTP New HttpClient API which replaces the REST Starter kit has been introduced. In addition to supporting strongly typed messages, the API supports async through Task<T>. It also has a pluggable channel stack for plugging in handlers for the request / response from the client side. See the QueryableSample for an example of the new channels. New extension methods for serializing / deserializing to/from HttpContent. ...NuGet: NuGet 1.0 RTM: NuGet is a free, open source developer focused package management system for the .NET platform intent on simplifying the process of incorporating third party libraries into a .NET application during development. This release is a Visual Studio 2010 extension and contains the the Package Manager Console and the Add Package Dialog.MVC Music Store: MVC Music Store v2.0: This is the 2.0 release of the MVC Music Store Tutorial. This tutorial is updated for ASP.NET MVC 3 and Entity Framework Code-First, and contains fixes and improvements based on feedback and common questions from previous releases. The main download, MvcMusicStore-v2.0.zip, contains everything you need to build the sample application, including A detailed tutorial document in PDF format Assets you will need to build the project, including images, a stylesheet, and a pre-populated databas...Free Silverlight & WPF Chart Control - Visifire: Visifire SL and WPF Charts v3.6.7 GA Released: Hi, Today we are releasing Visifire 3.6.7 GA with the following feature: * Inlines property has been implemented in Title. Also, this release contains fix for the following bugs: * In Column and Bar chart DataPoint’s label properties were not working as expected at real-time if marker enabled was set to true. * 3D Column and Bar chart were not rendered properly if AxisMinimum property was set in x-axis. You can download Visifire v3.6.7 here. Cheers, Team VisifireASP.NET MVC Project Awesome, jQuery Ajax helpers (controls): 1.6: A rich set of helpers (controls) that you can use to build highly responsive and interactive Ajax-enabled Web applications. These helpers include Autocomplete, AjaxDropdown, Lookup, Confirm Dialog, Popup Form, Popup and Pager new stuff: paging for the lookup lookup with multiselect changes: the css classes used by the framework where renamed to be more standard the lookup controller requries an item.ascx (no more ViewData["structure"]), and LookupList action renamed to Search all the...??????????: All-In-One Code Framework ??? 2011-01-12: 2011???????All-In-One Code Framework（??） 2011?1??????！！http://i3.codeplex.com/Project/Download/FileDownload.aspx?ProjectName=1code&DownloadId=128165 ?????release?，???????ASP.NET, AJAX, WinForm, Windows Shell????13?Sample Code。???，??????????sample code。 ?????：http://blog.csdn.net/sjb5201/archive/2011/01/13/6135037.aspx ??，??????MSDN????????????。 http://social.msdn.microsoft.com/Forums/zh-CN/codezhchs/threads ?????????????????，??Email ????patterns & practices – Enterprise Library: Enterprise Library 5.0 - Extensibility Labs: This is a preview release of the Hands-on Labs to help you learn and practice different ways the Enterprise Library can be extended. Learning MapCustom exception handler (estimated time to complete: 1 hr 15 mins) Custom logging trace listener (1 hr) Custom configuration source (registry-based) (30 mins) System requirementsEnterprise Library 5.0 / Unity 2.0 installed SQL Express 2008 installed Visual Studio 2010 Pro (or better) installed AuthorsChris Tavares, Microsoft Corporation ...Orchard Project: Orchard 1.0: Orchard Release Notes Build: 1.0.20 Published: 1/12/2010 How to Install OrchardTo install the Orchard tech preview using Web PI, follow these instructions: http://www.orchardproject.net/docs/Installing-Orchard.ashx Web PI will detect your hardware environment and install the application. --OR-- Alternatively, to install the release manually, download the Orchard.Web.1.0.20.zip file. The zip contents are pre-built and ready-to-run. Simply extract the contents of the Orchard folder from ...Umbraco CMS: Umbraco 4.6.1: The Umbraco 4.6.1 (codename JUNO) release contains many new features focusing on an improved installation experience, a number of robust developer features, and contains nearly 200 bug fixes since the 4.5.2 release. Getting Started A great place to start is with our Getting Started Guide: Getting Started Guide: http://umbraco.codeplex.com/Project/Download/FileDownload.aspx?DownloadId=197051 Make sure to check the free foundation videos on how to get started building Umbraco sites. They're ...StyleCop for ReSharper: StyleCop for ReSharper 5.1.14986.000: A considerable amount of work has gone into this release: Features: Huge focus on performance around the violation scanning subsystem: - caching added to reduce IO operations around reading and merging of settings files - caching added to reduce creation of expensive objects Users should notice condsiderable perf boost and a decrease in memory usage. Bug Fixes: - StyleCop's new ObjectBasedEnvironment object does not resolve the StyleCop installation path, thus it does not return the ...SQL Monitor - tracking sql server activities: SQL Monitor 3.1 beta 1: 1. support alert message template 2. dynamic toolbar commands depending on functionality 3. fixed some bugs 4. refactored part of the code, now more stable and more clean upFacebook C# SDK: 4.2.1: - Authentication bug fixes - Updated Json.Net to version 4.0.0 - BREAKING CHANGE: Removed cookieSupport config setting, now automatic. This download is also availible on NuGet: Facebook FacebookWeb FacebookWebMvcPhalanger - The PHP Language Compiler for the .NET Framework: 2.0 (January 2011): Another release build for daily use; it contains many new features, enhanced compatibility with latest PHP opensource applications and several issue fixes. To improve the performance of your application using MySQL, please use Managed MySQL Extension for Phalanger. Changes made within this release include following: New features available only in Phalanger. Full support of Multi-Script-Assemblies was implemented; you can build your application into several DLLs now. Deploy them separately t...AutoLoL: AutoLoL v1.5.3: A message will be displayed when there's an update available Shows a list of recent mastery files in the Editor Tab (requested by quite a few people) Updater: Update information is now scrollable Added a buton to launch AutoLoL after updating is finished Updated the UI to match that of AutoLoL Fix: Detects and resolves 'Read Only' state on Version.xmlNew Projects6 piece burr analysis: An educational project for researching a 6 piece burrsBabySmash7: BabySmash for WP7C# 4.0 library to generate INotifyPropertyChanged proxy from POCO type: C# 4.0 library to generate INotifyPropertyChanged proxy from POCO type at runtime. It will inherit from the type given and override any public virtual properties with wrappers that notify on change. Text templates are used to define the source of the generated class.CompositeC1Contrib: User contributions, hacks and optimization to Composite C1 CMS.CrtTfsDemo: demo project to test code review tool integration with tfsDbExpressions: An abstract syntax tree for Sql.DefaultAndZipTemplate.xaml (Build Process Template for TFS 2010): Just the given default build process template in TFS 2010 plus one additional activity to put the drop folder content into a zip file located in the same folder.DotNetNuke easy.News Multilanguage template module: This is a DotNetNuke 5.5+ module for news. It allows users to create, manage and preview news on DotNetNuke portals. Module is template based and can work on multilanguage portals. It is free of charge and constantly improving.DragonBone Software: DragonBone Software is a software that allows developers to create 2D skeletal animations that can be exported via XML and added into your project.DuckCallLib: Extension methods that allow for something that approximates to duck typing in C#. While certainly not as syntactically clean as Ruby, using this library allows the user to not have to write the same reflection code over and over again when duck typing is desired.EPAT: Energy Performance Assessment ToolsHCMUS Bug Tracker: HCMUS Bug Tracker is project to management bug in software developer. This project execute by students at Falculty of Natural Sciences University.IIS Tuner: Simple Tuning tool for IISinteLibrary: inteLibraryLearnPad: A light and easy to use note writer and learn aid. Project LearnPad aims to make the life of students a lot easier with it's ability to capture information in textual form easy and fast with the ability to refine and review the content later.LiveTiss: Solução web em Silverlight 4, para criação, edição e gerenciamento de guias TISS. Essa solução poderá ser hospedada no Windows Azure e sua base de dados no SQL Azure.MakeMayhem: Mayhem makes it simple for end users to control complex events with their PCs. Whether you want to Update a Twitter status when your cat is detected by your webcam or monitor your serial ports and trigger events, it's no problem with Mayhem -- wreak your own personal havoc. MangaEplision: A manga viewer/downloader. You no longer have to use multiple applications when you can download the latest and view them in MangaEplision. It is written in C#/VB.NET.Min-Mang: A logical game implementation.OCPforStudent: OCP for Student, whose full name is Online Collabration Platform for Student, is the course project for OOAD.Orchard Google Analytics Module: This is an Orchard module adding Google Analytics support.Orchard Voting API: Voting is a set of APIs used by other modules to manage votes on content items, calculating different values automatically and efficiently.Parser SQL Query: Class C++ of parse SQL query. Simple, but effective to add a condition to the SQL query of any complexity or replace a variable by its value. Variable begins with a '$'. Sample app for Adventureworks database: The purpose of this project is to show people how to build apps around Adventureworks sample database with latest Microsoft technologies including WPF, Silverlight, Asp.Net, WF, WIF, etc.SCRotUM: student project scrumtoolSecFtp: secftp makes it easier for people to upload ftp fileSharePoint 2010 Custom Ribbon Demo: This demo projects shows you how to create a custom Ribbon tab at runtime and how to activate the Ribbon tab on page load! see my blog for details: http://ikarstein.wordpress.comSimple but Cool Silverlight Message Boxes (Info, Error, Confirm, etc.): Simple but presentable message boxes for Silverlight developers. Designed for ease of integration with existing projects.SMSFilter: Windows Mobile application much talked about on XDA-Developers at http://forum.xda-developers.com/showthread.php?p=6350352#post6350352 SMSFilter is a new app which has been designed to filter you PRIVATE message away from normal inboxTata: Tata is a small language I invented and implemented. It's dedicated for test automation in Embedding Systems.Unix Tools in F#: some simple unix command line tools written in f sharp.viprava.net: The Viprava.NET is programming language using sanskrit. The primary focus is to help the Indian Public to get more attached to the Progamming environment. Please visit http://amarakosha.hpage.com/ for contact Information.Visual Studio PS3 Extension and Tools: An extension to Visual Studio to compile Playstation 3. Including an SFO editor and Package creator.WebDev: A simple notepad replacement that is specially made to help web developers without any unneeded "extra features*. Short, simple, sweet.Wpf Touch Enabled List View: A simple control that inherits from WPF standard listview to handle some mouse event for support on touch screen.XHTMLr: Normalizes HTML into XML that can be parsed and manipulated.

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• Agile Testing Days 2012 – Day 3 – Agile or agile?

  - by Chris George

  Another early start for my last Lean Coffee of the conference, and again it was not wasted. We had some really interesting discussions around how to determine what test automation is useful, if agile is not faster, why do it? and a rather existential discussion on whether unicorns exist! First keynote of the day was entitled “Fast Feedback Teams” by Ola Ellnestam. Again this relates nicely to the releasing faster talk on day 2, and something that we are looking at and some teams are actively trying. Introducing the notion of feedback, Ola describes a game he wrote for his eldest child. It was a simple game where every time he clicked a button, it displayed “You’ve Won!”. He then changed it to be a Win-Lose-Win-Lose pattern and watched the feedback from his son who then twigged the pattern and got his younger brother to play, alternating turns… genius! (must do that with my children). The idea behind this was that you need that feedback loop to learn and progress. If you are not getting the feedback you need to close that loop. An interesting point Ola made was to solve problems BEFORE writing software. It may be that you don’t have to write anything at all, perhaps it’s a communication/training issue? Perhaps the problem can be solved another way. Writing software, although it’s the business we are in, is expensive, and this should be taken into account. He again mentions frequent releases, and how they should be made as soon as stuff is ready to be released, don’t leave stuff on the shelf cause it’s not earning you anything, money or data. I totally agree with this and it’s something that we will be aiming for moving forwards. “Exceptions, Assumptions and Ambiguity: Finding the truth behind the story” by David Evans started off very promising by making references to ‘Grim up North’ referring to the north of England. Not sure it was appreciated by most of the audience, but it made me laugh! David explained how there are always risks associated with exceptions, giving the example of a one-way road near where he lives, with an exception sign giving rights to coaches to go the wrong way. Therefore you could merrily swing around the corner of the one way road straight into a coach! David showed the danger in making assumptions with lyrical quotes from Lola by The Kinks “I’m glad I’m a man, and so is Lola” and with a picture of a toilet flush that needed instructions to operate the full and half flush. With this particular flush, you pulled the handle all the way down to half flush, and half way down to full flush! hmmm, a bit of a crappy user experience methinks! Then through a clever use of a passage from the Jabberwocky, David then went onto show how mis-translation/ambiguity is the can completely distort the original meaning of something, and this is a real enemy of software development. This was all helping to demonstrate that the term Story is often heavily overloaded in the Agile world, and should really be stripped back to what it is really for, stating a business problem, and offering a technical solution. Therefore a story could be worded as “In order to {make some improvement}, we will { do something}”. The first ‘in order to’ statement is stakeholder neutral, and states the problem through requesting an improvement to the software/process etc. The second part of the story is the verb, the doing bit. So to achieve the ‘improvement’ which is not currently true, we will do something to make this true in the future. My PM is very interested in this, and he’s observed some of the problems of overloading stories so I’m hoping between us we can use some of David’s suggestions to help clarify our stories better. The second keynote of the day (and our last) proved to be the most entertaining and exhausting of the conference for me. “The ongoing evolution of testing in agile development” by Scott Barber. I’ve never had the pleasure of seeing Scott before… OMG I would love to have even half of the energy he has! What struck me during this presentation was Scott’s explanation of how testing has become the role/job that it is (largely) today, and how this has led to the need for ‘methodologies’ to make dev and test work! The argument that we should be trying to converge the roles again is a very valid one, and one that a couple of the teams at work are actively doing with great results. Making developers as responsible for quality as testers is something that has been lost over the years, but something that we are now striving to achieve. The idea that we (testers) should be testing experts/specialists, not testing ‘union members’, supports this idea so the entire team works on all aspects of a feature/product, with the ‘specialists’ taking the lead and advising/coaching the others. This leads to better propagation of information around the team, a greater holistic understanding of the project and it allows the team to continue functioning if some of it’s members are off sick, for example. Feeling somewhat drained from Scott’s keynote (but at the same time excited that alot of the points he raised supported actions we are taking at work), I headed into my last presentation for Agile Testing Days 2012 before having to make my way to Tegel to catch the flight home. “Thinking and working agile in an unbending world” with Pete Walen was a talk I was not going to miss! Having spoken to Pete several times during the past few days, I was looking forward to hearing what he was going to say, and I was not disappointed. Pete started off by trying to separate the definitions of ‘Agile’ as in the methodology, and ‘agile’ as in the adjective by pronouncing them the ‘english’ and ‘american’ ways. So Agile pronounced (Ajyle) and agile pronounced (ajul). There was much confusion around what the hell he was talking about, although I thought it was quite clear. Agile – Software development methodology agile – Marked by ready ability to move with quick easy grace; Having a quick resourceful and adaptable character. Anyway, that aside (although it provided a few laughs during the presentation), the point was that many teams that claim to be ‘Agile’ but are not, in fact, ‘agile’ by nature. Implementing ‘Agile’ methodologies that are so prescriptive actually goes against the very nature of Agile development where a team should anticipate, adapt and explore. Pete made a valid point that very few companies intentionally put up roadblocks to impede work, so if work is being blocked/delayed, why? This is where being agile as a team pays off because the team can inspect what’s going on, explore options and adapt their processes. It is through experimentation (and that means trying and failing as well as trying and succeeding) that a team will improve and grow leading to focussing on what really needs to be done to achieve X. So, that was it, the last talk of our conference. I was gutted that we had to miss the closing keynote from Matt Heusser, as Matt was another person I had spoken too a few times during the conference, but the flight would not wait, and just as well we left when we did because the traffic was a nightmare! My Takeaway Triple from Day 3: Release often and release small – don’t leave stuff on the shelf Keep the meaning of the word ‘agile’ in mind when working in ‘Agile Look at testing as more of a skill than a role  

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• PostSharp, Obfuscation, and IL

  - by Simon Cooper

  Aspect-oriented programming (AOP) is a relatively new programming paradigm. Originating at Xerox PARC in 1994, the paradigm was first made available for general-purpose development as an extension to Java in 2001. From there, it has quickly been adapted for use in all the common languages used today. In the .NET world, one of the primary AOP toolkits is PostSharp. Attributes and AOP Normally, attributes in .NET are entirely a metadata construct. Apart from a few special attributes in the .NET framework, they have no effect whatsoever on how a class or method executes within the CLR. Only by using reflection at runtime can you access any attributes declared on a type or type member. PostSharp changes this. By declaring a custom attribute that derives from PostSharp.Aspects.Aspect, applying it to types and type members, and running the resulting assembly through the PostSharp postprocessor, you can essentially declare 'clever' attributes that change the behaviour of whatever the aspect has been applied to at runtime. A simple example of this is logging. By declaring a TraceAttribute that derives from OnMethodBoundaryAspect, you can automatically log when a method has been executed: public class TraceAttribute : PostSharp.Aspects.OnMethodBoundaryAspect { public override void OnEntry(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Entering {0}.{1}.", method.DeclaringType.FullName, method.Name)); } public override void OnExit(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Leaving {0}.{1}.", method.DeclaringType.FullName, method.Name)); } } [Trace] public void MethodToLog() { ... } Now, whenever MethodToLog is executed, the aspect will automatically log entry and exit, without having to add the logging code to MethodToLog itself. PostSharp Performance Now this does introduce a performance overhead - as you can see, the aspect allows access to the MethodBase of the method the aspect has been applied to. If you were limited to C#, you would be forced to retrieve each MethodBase instance using Type.GetMethod(), matching on the method name and signature. This is slow. Fortunately, PostSharp is not limited to C#. It can use any instruction available in IL. And in IL, you can do some very neat things. Ldtoken C# allows you to get the Type object corresponding to a specific type name using the typeof operator: Type t = typeof(Random); The C# compiler compiles this operator to the following IL: ldtoken [mscorlib]System.Random call class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle( valuetype [mscorlib]System.RuntimeTypeHandle) The ldtoken instruction obtains a special handle to a type called a RuntimeTypeHandle, and from that, the Type object can be obtained using GetTypeFromHandle. These are both relatively fast operations - no string lookup is required, only direct assembly and CLR constructs are used. However, a little-known feature is that ldtoken is not just limited to types; it can also get information on methods and fields, encapsulated in a RuntimeMethodHandle or RuntimeFieldHandle: // get a MethodBase for String.EndsWith(string) ldtoken method instance bool [mscorlib]System.String::EndsWith(string) call class [mscorlib]System.Reflection.MethodBase [mscorlib]System.Reflection.MethodBase::GetMethodFromHandle( valuetype [mscorlib]System.RuntimeMethodHandle) // get a FieldInfo for the String.Empty field ldtoken field string [mscorlib]System.String::Empty call class [mscorlib]System.Reflection.FieldInfo [mscorlib]System.Reflection.FieldInfo::GetFieldFromHandle( valuetype [mscorlib]System.RuntimeFieldHandle) These usages of ldtoken aren't usable from C# or VB, and aren't likely to be added anytime soon (Eric Lippert's done a blog post on the possibility of adding infoof, methodof or fieldof operators to C#). However, PostSharp deals directly with IL, and so can use ldtoken to get MethodBase objects quickly and cheaply, without having to resort to string lookups. The kicker However, there are problems. Because ldtoken for methods or fields isn't accessible from C# or VB, it hasn't been as well-tested as ldtoken for types. This has resulted in various obscure bugs in most versions of the CLR when dealing with ldtoken and methods, and specifically, generic methods and methods of generic types. This means that PostSharp was behaving incorrectly, or just plain crashing, when aspects were applied to methods that were generic in some way. So, PostSharp has to work around this. Without using the metadata tokens directly, the only way to get the MethodBase of generic methods is to use reflection: Type.GetMethod(), passing in the method name as a string along with information on the signature. Now, this works fine. It's slower than using ldtoken directly, but it works, and this only has to be done for generic methods. Unfortunately, this poses problems when the assembly is obfuscated. PostSharp and Obfuscation When using ldtoken, obfuscators don't affect how PostSharp operates. Because the ldtoken instruction directly references the type, method or field within the assembly, it is unaffected if the name of the object is changed by an obfuscator. However, the indirect loading used for generic methods was breaking, because that uses the name of the method when the assembly is put through the PostSharp postprocessor to lookup the MethodBase at runtime. If the name then changes, PostSharp can't find it anymore, and the assembly breaks. So, PostSharp needs to know about any changes an obfuscator does to an assembly. The way PostSharp does this is by adding another layer of indirection. When PostSharp obfuscation support is enabled, it includes an extra 'name table' resource in the assembly, consisting of a series of method & type names. When PostSharp needs to lookup a method using reflection, instead of encoding the method name directly, it looks up the method name at a fixed offset inside that name table: MethodBase genericMethod = typeof(ContainingClass).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: get_Prop1 21: set_Prop1 22: DoFoo 23: GetWibble When the assembly is later processed by an obfuscator, the obfuscator can replace all the method and type names within the name table with their new name. That way, the reflection lookups performed by PostSharp will now use the new names, and everything will work as expected: MethodBase genericMethod = typeof(#kGy).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: #kkA 21: #zAb 22: #EF5a 23: #2tg As you can see, this requires direct support by an obfuscator in order to perform these rewrites. Dotfuscator supports it, and now, starting with SmartAssembly 6.6.4, SmartAssembly does too. So, a relatively simple solution to a tricky problem, with some CLR bugs thrown in for good measure. You don't see those every day!

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• Learnings from trying to write better software: Loud errors from the very start

  - by theo.spears

  Microsoft made a very small number of backwards incompatible changes between .NET 1.1 and 2.0, because they wanted to make it as easy and safe as possible to port applications to the new runtime. (Here’s a list.) However, one thing they did change was what happens when a background thread fails with an unhanded exception - in .NET 1.1 nothing happened, the thread terminated, and the application continued oblivious. Try the same trick in .NET 2.0 and the entire application, including all threads, will rudely terminate. There are three reasons for this. Firstly if a background thread has crashed, it may have left the entire application in an inconsistent state, in a way that will affect other threads. It’s better to terminate the entire application than continue and have the application perform actions based on a broken state, for example take customer orders, or write corrupt files to disk.  Secondly, during software development, it is far better for errors to be loud and obtrusive. Even if you have unit tests and integration tests (and you should), a key part of ensuring software works properly is to actually try using it, both through systematic testing and through the casual use all software gets by its developers during use. Subtle errors are easy to miss if you are not actually doing real work using the application, loud errors are obvious. Thirdly, and most importantly, even if catching and swallowing exceptions indiscriminately doesn't cause any problems in your application, the presence of unexpected exceptions shows you do not fully understand the behavior of your code. The currently released version of your application may be absolutely correct. However, because your mental model of the behavior is wrong, any future change you make to the program could and probably will introduce critical errors.  This applies to more than just exceptions causing threads to exit, any unexpected state should make the application blow up in an un-ignorable way. The worst thing you can do is silently swallow errors and continue. And let's be clear, writing to a log file does not count as blowing up in an un-ignorable way.  This is all simple as long as the call stack only contains your code, but when your functions start to be called by third party or .NET framework code, it's surprisingly easy for exceptions to start vanishing. Let's look at two examples.   1. Windows forms drag drop events  Usually if you throw an exception from a winforms event handler it will bring up the "application has crashed" dialog with abort and continue options. This is a good default behavior - the error is big and loud, but it is possible for the user to ignore the error and hopefully save their data, if somehow this bug makes it past testing. However drag and drop are different - throw an exception from one of these and it will just be silently swallowed with no explanation.  By the way, it's not just drag and drop events. Timer events do it too.  You can research how exceptions are treated in different handlers and code appropriately, but the safest and most user friendly approach is to always catch exceptions in your event handlers and show your own error message. I'll talk about one good approach to handling these exceptions at the end of this post.   2. SSMS integration for SQL Tab Magic  A while back wrote an SSMS add-in called SQL Tab Magic (learn more about the process here). It works by listening to certain SSMS events and remembering what documents are opened and closed. I deployed it internally and it was used for a few months by a number of people without problems, so I was reasonably confident in its quality. Before releasing I made a few cleanups, including introducing error reporting. Bam. A few days later I was looking at over 1,000 error reports in my inbox. In turns out I wasn't handling table designers properly. The exceptions were there, but again SSMS was helpfully swallowing them all for me, so I was blissfully unaware. Had I made my errors loud from the start, I would have noticed these issues long before and fixed them.   Handling exceptions  Now you are systematically catching exceptions throughout your application, you need to do something with them. I've tried 3 options: log them, alert the user, and automatically send them home.  There are a few good options for logging in .NET. The most widespread is Apache log4net, which provides a very capable and configurable logging framework. There is also NLog which has a compatible interface, with a greater emphasis on fluent rather than XML configuration.  Alerting the user serves two purposes. Firstly it means they understand their action has failed to they don't just assume it worked (Silent file copy failure is a problem if you then delete the originals) or that they should keep waiting for a background task to complete. Secondly, it means the users can report the bug to your support team, and then you can fix it. This means the message you show the user should contain the information you need as a developer to identify and fix it. And the user will probably just send you a screenshot of the dialog, so it shouldn't be hidden by scroll bars.  This leads us to the third option, automatically sending error reports home. By automatic I mean with minimal effort on the part of the user, rather than doing it silently behind their backs. The advantage of this is you can send back far more detailed and precise information than you can expect a user to include in an email, and by making it easier to report errors, you make it more likely users will do so.  We do this using a great tool called SmartAssembly (full disclosure: this is a product made by Red Gate). It captures complete stack traces including the values of all local variables and then allows the user to send all this information back with a single click. We also capture log files to help understand what lead up to the error. We then use the free SmartAssembly Sync for Jira to dedupe these reports and raise them as bugs in our bug tracking system.  The combined effect of loud errors during development and then automatic error reporting once software is deployed allows us to find and fix more bugs, correct misunderstandings on how our software works, and overall is a key piece in delivering higher quality software. However it is no substitute for having motivated cunning testers in the building - and we're looking to hire more of those too.   If you found this post interesting you should follow me on twitter.  

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• CodePlex Daily Summary for Sunday, January 16, 2011

  CodePlex Daily Summary for Sunday, January 16, 2011Popular ReleasesVidCoder: 0.8.1: Adds ability to choose an arbitrary range (in seconds or frames) to encode. Adds ability to override the title number in the output file name when enqueing multiple titles. Updated presets: Added iPhone 4, Apple TV 2, fixed some existing presets that should have had weightp=0 or trellis=0 on them. Added {parent} option to auto-name format. Use {parent:2} to refer to a folder 2 levels above the input file. Added {title:2} option to auto-name format. Adds leading zeroes to reach the sp...Network Asset Manager: Release 1.0.9: Release notes for version 1.0.9New FeaturesAdded new report subsystem for better report handling and report history management. Added support for Network adapter discovery Added reports for low disk space, disk utilization, hardware, OS installation Some application fixes. Bug fixesArtifact ID 2979655 : Fixed issue with installed software collection on windows 64 bit. (Thanks to nielsvdc for this patch) NotesPrevious versions of NAM installations need to be manually uninstalled bef...mytrip.mvc (CMS & e-Commerce): mytrip.mvc 1.0.52.0 beta 2: New MVC3 RTM WEB.mytrip.mvc 1.0.52.0 Web for install hosting System Requirements: NET 4.0, MSSQL 2008 or MySql (auto creation table to database) if .\SQLEXPRESS auto creation database (App_Data folder) SRC.mytrip.mvc 1.0.52.0 System Requirements: Visual Studio 2010 or Web Deweloper 2010 MSSQL 2008 or MySql (auto creation table to database) if .\SQLEXPRESS auto creation database (App_Data folder) Connector/Net 6.3.5, MVC3 RTM WARNING For run and debug SRC.mytrip.mvc 1.0.52.0 download and...BloodSim: BloodSim - 1.3.3.0: NOTE: If you have a previous version of BloodSim, you must update WControls.dll from the Required DLLs download. - Removed average stats from main window as this is no longer necessary - Added ability to name a set of runs that will show up in the title bar of the graph window - Added ability to run progressive simulation sets, increasing up to 2 chosen stats by a value each time - Added option to set the amount that Death Strike heals for on the Last 5s Damage - Added option for Blood Shiel...NuGet: NuGet 1.0 RTM: NuGet is a free, open source developer focused package management system for the .NET platform intent on simplifying the process of incorporating third party libraries into a .NET application during development. This release is a Visual Studio 2010 extension and contains the the Package Manager Console and the Add Package Dialog.MVC Music Store: MVC Music Store v2.0: This is the 2.0 release of the MVC Music Store Tutorial. This tutorial is updated for ASP.NET MVC 3 and Entity Framework Code-First, and contains fixes and improvements based on feedback and common questions from previous releases. The main download, MvcMusicStore-v2.0.zip, contains everything you need to build the sample application, including A detailed tutorial document in PDF format Assets you will need to build the project, including images, a stylesheet, and a pre-populated databas...Free Silverlight & WPF Chart Control - Visifire: Visifire SL and WPF Charts v3.6.7 GA Released: Hi, Today we are releasing Visifire 3.6.7 GA with the following feature: * Inlines property has been implemented in Title. Also, this release contains fix for the following bugs: * In Column and Bar chart DataPoint’s label properties were not working as expected at real-time if marker enabled was set to true. * 3D Column and Bar chart were not rendered properly if AxisMinimum property was set in x-axis. You can download Visifire v3.6.7 here. Cheers, Team VisifireFluent Validation for .NET: 2.0: Changes since 2.0 RC Fix typo in the name of FallbackAwareResourceAccessorBuilder Fix issue #7062 - allow validator selectors to work against nullable properties with overriden names. Fix error in German localization. Better support for client-side validation messages in MVC integration. All changes since 1.3 Allow custom MVC ModelValidators to be added to the FVModelValidatorProvider Support resource provider for custom property validators through the new IResourceAccessorBuilder ...EnhSim: EnhSim 2.3.2 ALPHA: 2.3.2 ALPHAThis release supports WoW patch 4.03a at level 85 To use this release, you must have the Microsoft Visual C++ 2010 Redistributable Package installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=A7B7A05E-6DE6-4D3A-A423-37BF0912DB84 To use the GUI you must have the .NET 4.0 Framework installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9cfb2d51-5ff4-4491-b0e5-b386f32c0992 - Quick update to ...ASP.NET MVC Project Awesome, jQuery Ajax helpers (controls): 1.6: A rich set of helpers (controls) that you can use to build highly responsive and interactive Ajax-enabled Web applications. These helpers include Autocomplete, AjaxDropdown, Lookup, Confirm Dialog, Popup Form, Popup and Pager new stuff: paging for the lookup lookup with multiselect changes: the css classes used by the framework where renamed to be more standard the lookup controller requries an item.ascx (no more ViewData["structure"]), and LookupList action renamed to Search all the...pwTools: pwTools: pwTools SVN Downloaderthe downloader contains three *.bat files pwtools-changelog.bat creates a changelog.txt file containing the change notes pwtools-binaries.bat is downloading the latest stable binary files pwtools-source.bat is downloading the latest project files (including source code and binaries)??????????: All-In-One Code Framework ??? 2011-01-12: 2011???????All-In-One Code Framework（??） 2011?1??????！！http://i3.codeplex.com/Project/Download/FileDownload.aspx?ProjectName=1code&DownloadId=128165 ?????release?，???????ASP.NET, AJAX, WinForm, Windows Shell????13?Sample Code。???，??????????sample code。 ?????：http://blog.csdn.net/sjb5201/archive/2011/01/13/6135037.aspx ??，??????MSDN????????????。 http://social.msdn.microsoft.com/Forums/zh-CN/codezhchs/threads ?????????????????，??Email ????patterns & practices – Enterprise Library: Enterprise Library 5.0 - Extensibility Labs: This is a preview release of the Hands-on Labs to help you learn and practice different ways the Enterprise Library can be extended. Learning MapCustom exception handler (estimated time to complete: 1 hr 15 mins) Custom logging trace listener (1 hr) Custom configuration source (registry-based) (30 mins) System requirementsEnterprise Library 5.0 / Unity 2.0 installed SQL Express 2008 installed Visual Studio 2010 Pro (or better) installed AuthorsChris Tavares, Microsoft Corporation ...Orchard Project: Orchard 1.0: Orchard Release Notes Build: 1.0.20 Published: 1/12/2010 How to Install OrchardTo install Orchard using Web PI, follow these instructions: http://www.orchardproject.net/docs/Installing-Orchard.ashx Web PI will detect your hardware environment and install the application. --OR-- Alternatively, to install the release manually, download the Orchard.Web.1.0.20.zip file. http://orchardproject.net/docs/Manually-installing-Orchard-zip-file.ashx The zip contents are pre-built and ready-to-run...Umbraco CMS: Umbraco 4.6.1: The Umbraco 4.6.1 (codename JUNO) release contains many new features focusing on an improved installation experience, a number of robust developer features, and contains nearly 200 bug fixes since the 4.5.2 release. Getting Started A great place to start is with our Getting Started Guide: Getting Started Guide: http://umbraco.codeplex.com/Project/Download/FileDownload.aspx?DownloadId=197051 Make sure to check the free foundation videos on how to get started building Umbraco sites. They're ...StyleCop for ReSharper: StyleCop for ReSharper 5.1.14986.000: A considerable amount of work has gone into this release: Features: Huge focus on performance around the violation scanning subsystem: - caching added to reduce IO operations around reading and merging of settings files - caching added to reduce creation of expensive objects Users should notice condsiderable perf boost and a decrease in memory usage. Bug Fixes: - StyleCop's new ObjectBasedEnvironment object does not resolve the StyleCop installation path, thus it does not return the ...Facebook C# SDK: 4.2.1: - Authentication bug fixes - Updated Json.Net to version 4.0.0 - BREAKING CHANGE: Removed cookieSupport config setting, now automatic. This download is also availible on NuGet: Facebook FacebookWeb FacebookWebMvcHawkeye - The .Net Runtime Object Editor: Hawkeye 1.2.5: In the case you are running an x86 Windows and you installed Release 1.2.4, you should consider upgrading to this release (1.2.5) as it appears Hawkeye is broken on x86 OS. I apologize for the inconvenience, but it appears Hawkeye 1.2.4 (and probably previous versions) doesn't run on x86 Windows (See issue http://hawkeye.codeplex.com/workitem/7791). This maintenance release fixes this broken behavior. This release comes in two flavors: Hawkeye.125.N2 is the standard .NET 2 build, was compile...Phalanger - The PHP Language Compiler for the .NET Framework: 2.0 (January 2011): Another release build for daily use; it contains many new features, enhanced compatibility with latest PHP opensource applications and several issue fixes. To improve the performance of your application using MySQL, please use Managed MySQL Extension for Phalanger. Changes made within this release include following: New features available only in Phalanger. Full support of Multi-Script-Assemblies was implemented; you can build your application into several DLLs now. Deploy them separately t...AutoLoL: AutoLoL v1.5.3: A message will be displayed when there's an update available Shows a list of recent mastery files in the Editor Tab (requested by quite a few people) Updater: Update information is now scrollable Added a buton to launch AutoLoL after updating is finished Updated the UI to match that of AutoLoL Fix: Detects and resolves 'Read Only' state on Version.xmlNew ProjectsA simple grammar based intellisense for Html / JavaScript: A JavaScript library to enable intellisense based on a grammar. Example: Sentence -> Greeting | Command Greeting -> "hello" Name Name -> string Command -> "execute " commandName commandName -> "test" | "build" | "verify" Then users will be guided with suggestions as they typeAif message header editor (AMHE): The Aif message header editor allows the developer to change the Aif message-header information in the Xml-document.Arabic Controls For WP7: This project provides a few right-to-left controls and an engine to render Arabic characters for WP7 due to the partial Arabic support.ASIVeste: No description availableAzureFiddlerCore: AzureFiddlerCore allows an instance of Fiddler to be hosted in an Azure application. It will export any requests sent through its special proxies to a SAZ file stored in Azure Blob storage, for you to download. It is written in C# using FiddlerCore.Ermek CMS: CS Tournament CMS (Claims Management System).Erqilu: Erqilu WebSite.HHChat: A client-server chat program allowing users to have a list of contacts with whom they can chat either individually or in groups. Will support sending files and emoticons. Developed in C# using WPF, MVVM and WCF.MFC GraphViewer: mfc graph algorithm toolMovieStorePDT: MovieStore-PruebaDeTecnología es un proyecto donde probaremos las tecnologías de desarrollo de software (ASP.NET MVC, C#, jQuery y EF) que utilizaremos en proyectos actuales y siguientes.NLib: NLib it's a Helper Library. It's developed in C#. Documentation will coming soonOrchard Tokens Module: Tokens module for orchard.Phatnotes to Evernote Converter: Convert your Phatnotes (Version 5) to Evernote. Phatnotes is a tool that syncs notes from PC to a windows-mobile phone or IPhone. I personally switched to an Android phone, and needed to convert my Phatnotes, so I chose Evernote. Sapit - Small And Powerful Integration Toolkit: Sapit is an implementation of integration patterns and techniques. Included are Cache, Circuit Breaker, Response Time Throttle and Timeout. Apply these to your code using Aspect Oriented Programming (AOP) via Castle Windsor, PostSharp or Unity Application Block. More to come ...SimpleMVC: SimpleMVC is a lightweight .NET framework for creating applications based upon the classic Model, View and Controller concept.SMSRules: The most comprehensive SMS management tool which gives you an option to do what you always wanted to do. Some of the things which it enables you to do!! 1. Filter all the incoming messages and Move/Copy them to a folder 2. Create/Delete user folders. 3. Hide private messages. speakyourmind: A simple desktop client written in .NET that posts updates to Social Networking Sites such as Twitter and Facebook. The objective of creating this project is to learn the various social networking APIs available. (Currently only twitter support is added)String Toolkit.NET: Projeto para gerar string a partir de valores numericosTraceView Log Visualizer: TraceViewWallyMap & FindWally: Silverlight 4 and WP7 simple georeference applicationswp7 destiny: wp7 destinywp7 minesweeper: wp7 minesweeper

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• MacBook Pro Late 2009 SATA Resets, Slowness (Is my motherboard dying on both machines?)

  - by A Student at a University

  My MacBook Pro runs slower the longer it's on. I am getting kernel warnings. Some, but not all, resets correlate with AC power connects and disconnects. I don't think the warnings do. (How do I tell?) What are these errors? What causes them? Can this damage the drive or corrupt data? What is it seeing that motivates these? 02:37:16[ 0.791992] ahci 0000:00:0b.0: PCI INT A -> Link[LSI0] -> GSI 20 (level, low) -> IRQ 20 02:37:16[ 0.792047] ahci 0000:00:0b.0: irq 43 for MSI/MSI-X 02:37:16[ 0.792053] ahci 0000:00:0b.0: controller can't do PMP, turning off CAP_PMP 02:37:16[ 0.792104] ahci 0000:00:0b.0: AHCI 0001.0200 32 slots 6 ports 1.5 Gbps 0x3 impl IDE mode 02:37:16[ 0.792107] ahci 0000:00:0b.0: flags: 64bit ncq sntf pm led pio slum part boh 02:37:16[ 0.792111] ahci 0000:00:0b.0: setting latency timer to 64 02:37:16[ 0.813473] scsi0 : ahci 02:37:16[ 0.823340] scsi1 : ahci 02:37:16[ 0.848164] ata1: SATA max UDMA/133 abar m8192@0xe7484000 port 0xe7484100 irq 43 02:37:16[ 0.848166] ata2: SATA max UDMA/133 abar m8192@0xe7484000 port 0xe7484180 irq 43 02:37:16[ 1.190132] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) 02:37:16[ 1.190153] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) 02:37:16[ 1.213568] ata1.00: ATA-8: OCZ-VERTEX2, 1.23, max UDMA/133 02:37:16[ 1.213572] ata1.00: 195371568 sectors, multi 1: LBA48 NCQ (depth 31/32) 02:37:16[ 1.227293] ata2.00: ATA-8: ST9500420ASG, 0002SDM1, max UDMA/133 02:37:16[ 1.227297] ata2.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 31/32) 02:37:16[ 1.229570] ata2.00: configured for UDMA/133 02:37:16[ 1.240120] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5850000 action 0xe frozen 02:37:16[ 1.240123] ata2: irq_stat 0x00000040, connection status changed 02:37:16[ 1.240127] ata2: SError: { PHYRdyChg CommWake LinkSeq TrStaTrns DevExch } 02:37:16[ 1.240133] ata2: hard resetting link 02:37:16[ 1.260738] ata1.00: configured for UDMA/133 02:37:16[ 1.280111] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5850000 action 0xe frozen 02:37:16[ 1.280114] ata1: irq_stat 0x00000040, connection status changed 02:37:16[ 1.280118] ata1: SError: { PHYRdyChg CommWake LinkSeq TrStaTrns DevExch } 02:37:16[ 1.280122] ata1: hard resetting link 02:37:16[ 1.990101] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) 02:37:16[ 1.994215] ata2.00: configured for UDMA/133 02:37:16[ 1.994220] ata2: EH complete 02:37:16[ 2.030097] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) 02:37:16[ 2.090773] ata1.00: configured for UDMA/133 02:37:16[ 2.090778] ata1: EH complete 02:37:16[ 2.090931] scsi 0:0:0:0: Direct-Access ATA OCZ-VERTEX2 1.23 PQ: 0 ANSI: 5 02:37:16[ 2.091045] sd 0:0:0:0: Attached scsi generic sg0 type 0 02:37:16[ 2.091121] sd 0:0:0:0: [sda] 195371568 512-byte logical blocks: (100 GB/93.1 GiB) 02:37:16[ 2.091159] scsi 1:0:0:0: Direct-Access ATA ST9500420ASG 0002 PQ: 0 ANSI: 5 02:37:16[ 2.091163] sd 0:0:0:0: [sda] Write Protect is off 02:37:16[ 2.091165] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 02:37:16[ 2.091183] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA 02:37:16[ 2.091252] sd 1:0:0:0: Attached scsi generic sg1 type 0 02:37:16[ 2.091446] sd 1:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) 02:37:16[ 2.091580] sd 1:0:0:0: [sdb] Write Protect is off 02:37:16[ 2.091582] sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00 02:37:16[ 2.091637] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA 02:37:16[ 2.093140] sd 0:0:0:0: [sda] Attached SCSI disk 02:37:16[ 2.093773] sd 1:0:0:0: [sdb] Attached SCSI disk 02:37:16[ 2.693899] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null) 02:37:16[ 5.483492] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro 02:37:16[ 7.905040] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: (null) 02:37:25[ 19.553095] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=600 02:37:25[ 19.555266] EXT4-fs (dm-2): re-mounted. Opts: commit=600 02:37:25[ 19.641532] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5950000 action 0xe frozen t4 02:37:25[ 19.641532] ata1: irq_stat 0x00000040, connection status changed 02:37:25[ 19.641532] ata1: SError: { PHYRdyChg CommWake Dispar LinkSeq TrStaTrns DevExch } 02:37:25[ 19.641533] ata1: hard resetting link 02:37:25[ 19.642076] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5950000 action 0xe frozen t4 02:37:25[ 19.642078] ata2: irq_stat 0x00000040, connection status changed 02:37:25[ 19.642081] ata2: SError: { PHYRdyChg CommWake Dispar LinkSeq TrStaTrns DevExch } 02:37:25[ 19.642084] ata2: hard resetting link 02:37:26[ 20.392606] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) 02:37:26[ 20.392610] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) 02:37:26[ 20.396697] ata2.00: configured for UDMA/133 02:37:26[ 20.396703] ata2: EH complete 02:37:26[ 20.451491] ata1.00: configured for UDMA/133 02:37:26[ 20.451498] ata1: EH complete 02:37:30[ 24.563725] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=600 02:37:30[ 24.565939] EXT4-fs (dm-2): re-mounted. Opts: commit=600 02:37:30[ 24.627236] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5900000 action 0xe frozen t4 02:37:30[ 24.627240] ata1: irq_stat 0x00000040, connection status changed 02:37:30[ 24.627242] ata1: SError: { Dispar LinkSeq TrStaTrns DevExch } 02:37:30[ 24.627246] ata1: hard resetting link 02:37:30[ 24.632241] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5950000 action 0xe frozen t4 02:37:30[ 24.632244] ata2: irq_stat 0x00000040, connection status changed 02:37:30[ 24.632247] ata2: SError: { PHYRdyChg CommWake Dispar LinkSeq TrStaTrns DevExch } 02:37:30[ 24.632250] ata2: hard resetting link 02:37:31[ 25.372582] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) 02:37:31[ 25.382615] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) 02:37:31[ 25.386782] ata2.00: configured for UDMA/133 02:37:31[ 25.386788] ata2: EH complete 02:37:31[ 25.431668] ata1.00: configured for UDMA/133 02:37:31[ 25.431674] ata1: EH complete 02:45:54[ 529.141844] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=0 02:45:55[ 529.544529] EXT4-fs (dm-2): re-mounted. Opts: commit=0 02:45:55[ 529.622561] ata1: limiting SATA link speed to 1.5 Gbps 02:45:55[ 529.622568] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5850000 action 0xe frozen 02:45:55[ 529.622572] ata1: irq_stat 0x00400040, connection status changed 02:45:55[ 529.622576] ata1: SError: { PHYRdyChg CommWake LinkSeq TrStaTrns DevExch } 02:45:55[ 529.622583] ata1: hard resetting link 02:45:55[ 529.622609] ata2: limiting SATA link speed to 1.5 Gbps 02:45:55[ 529.622613] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5950000 action 0xe frozen 02:45:55[ 529.622616] ata2: irq_stat 0x00000040, connection status changed 02:45:55[ 529.622620] ata2: SError: { PHYRdyChg CommWake Dispar LinkSeq TrStaTrns DevExch } 02:45:55[ 529.622624] ata2: hard resetting link 02:45:56[ 530.380135] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:45:56[ 530.380157] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:45:56[ 530.384305] ata2.00: configured for UDMA/133 02:45:56[ 530.384314] ata2: EH complete 02:45:56[ 530.399225] ata1.00: configured for UDMA/133 02:45:56[ 530.399233] ata1: EH complete 02:45:58[ 532.395990] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=600 02:45:58[ 532.518270] EXT4-fs (dm-2): re-mounted. Opts: commit=600 02:45:58[ 532.590968] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5840000 action 0xe frozen t4 02:45:58[ 532.590973] ata1: irq_stat 0x00000040, connection status changed 02:45:58[ 532.590977] ata1: SError: { CommWake LinkSeq TrStaTrns DevExch } 02:45:58[ 532.590983] ata1: hard resetting link 02:45:58[ 532.591034] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5950000 action 0xe frozen t4 02:45:58[ 532.591037] ata2: irq_stat 0x00000040, connection status changed 02:45:58[ 532.591041] ata2: SError: { PHYRdyChg CommWake Dispar LinkSeq TrStaTrns DevExch } 02:45:58[ 532.591045] ata2: hard resetting link 02:45:59[ 533.340147] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:45:59[ 533.340168] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:45:59[ 533.344416] ata2.00: configured for UDMA/133 02:45:59[ 533.344424] ata2: EH complete 02:45:59[ 533.360839] ata1.00: configured for UDMA/133 02:45:59[ 533.360847] ata1: EH complete 02:45:59[ 533.584449] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=0 02:45:59[ 533.586999] EXT4-fs (dm-2): re-mounted. Opts: commit=0 02:45:59[ 533.660117] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5950000 action 0xe frozen 02:45:59[ 533.660122] ata2: irq_stat 0x00000040, connection status changed 02:45:59[ 533.660126] ata2: SError: { PHYRdyChg CommWake Dispar LinkSeq TrStaTrns DevExch } 02:45:59[ 533.660132] ata2: hard resetting link 02:45:59[ 533.660141] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5850000 action 0xe frozen 02:45:59[ 533.660143] ata1: irq_stat 0x00000040, connection status changed 02:45:59[ 533.660147] ata1: SError: { PHYRdyChg CommWake LinkSeq TrStaTrns DevExch } 02:45:59[ 533.660151] ata1: hard resetting link 02:46:00[ 534.412536] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:00[ 534.412562] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:00[ 534.416768] ata2.00: configured for UDMA/133 02:46:00[ 534.416777] ata2: EH complete 02:46:00[ 534.431396] ata1.00: configured for UDMA/133 02:46:00[ 534.431401] ata1: EH complete 02:46:03[ 537.384649] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=600 02:46:03[ 537.504214] EXT4-fs (dm-2): re-mounted. Opts: commit=600 02:46:03[ 537.585992] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5900000 action 0xe frozen t4 02:46:03[ 537.585996] ata1: irq_stat 0x00000040, connection status changed 02:46:03[ 537.585999] ata1: SError: { Dispar LinkSeq TrStaTrns DevExch } 02:46:03[ 537.586002] ata1: hard resetting link 02:46:03[ 537.586028] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5950000 action 0xe frozen t4 02:46:03[ 537.586030] ata2: irq_stat 0x00000040, connection status changed 02:46:03[ 537.586033] ata2: SError: { PHYRdyChg CommWake Dispar LinkSeq TrStaTrns DevExch } 02:46:03[ 537.586036] ata2: hard resetting link 02:46:04[ 538.330147] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:04[ 538.330168] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:04[ 538.334389] ata2.00: configured for UDMA/133 02:46:04[ 538.334398] ata2: EH complete 02:46:04[ 538.343511] ata1.00: configured for UDMA/133 02:46:04[ 538.343519] ata1: EH complete 02:46:04[ 538.456413] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=0 02:46:04[ 538.459404] EXT4-fs (dm-2): re-mounted. Opts: commit=0 02:46:04[ 538.540138] ata1.00: limiting speed to UDMA/100:PIO4 02:46:04[ 538.540144] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5850000 action 0xe frozen 02:46:04[ 538.540148] ata1: irq_stat 0x00000040, connection status changed 02:46:04[ 538.540153] ata1: SError: { PHYRdyChg CommWake LinkSeq TrStaTrns DevExch } 02:46:04[ 538.540159] ata1: hard resetting link 02:46:04[ 538.540202] ata2.00: limiting speed to UDMA/100:PIO4 02:46:04[ 538.540207] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5950000 action 0xe frozen 02:46:04[ 538.540211] ata2: irq_stat 0x00000040, connection status changed 02:46:04[ 538.540215] ata2: SError: { PHYRdyChg CommWake Dispar LinkSeq TrStaTrns DevExch } 02:46:04[ 538.540220] ata2: hard resetting link 02:46:05[ 539.290054] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:05[ 539.290041] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:05[ 539.294100] ata2.00: configured for UDMA/100 02:46:05[ 539.294106] ata2: EH complete 02:46:05[ 539.314125] ata1.00: configured for UDMA/100 02:46:05[ 539.314132] ------------[ cut here ]------------ 02:46:05[ 539.314140] WARNING: at /build/buildd/linux-2.6.35/drivers/ata/libata-eh.c:3638 ata_eh_finish+0xdf/0xf0() 02:46:05[ 539.314144] Hardware name: MacBookPro5,3 02:46:05[ 539.314146] Modules linked in: michael_mic arc4 xt_multiport binfmt_misc rfcomm sco bnep l2cap parport_pc ppdev nvidia(P) ipt_REJECT xt_recent snd_hda_codec_cirrus xt_limit xt_tcpudp ipt_addrtype xt_state snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi applesmc led_class ip6table_filter lib80211_crypt_tkip snd_rawmidi snd_seq_midi_event ip6_tables input_polldev hid_apple snd_seq wl(P) snd_timer snd_seq_device snd joydev bcm5974 usbhid mbp_nvidia_bl uvcvideo btusb videodev v4l1_compat v4l2_compat_ioctl32 nf_nat_irc hid nf_conntrack_irc soundcore snd_page_alloc i2c_nforce2 coretemp lib80211 bluetooth nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack lp parport iptable_filter ip_tables x_tables usb_storage firewire_ohci firewire_core forcedeth crc_itu_t ahci libahci 02:46:05[ 539.314221] Pid: 202, comm: scsi_eh_0 Tainted: P 2.6.35-25-generic #44-Ubuntu 02:46:05[ 539.314224] Call Trace: 02:46:05[ 539.314233] [<ffffffff8106091f>] warn_slowpath_common+0x7f/0xc0 02:46:05[ 539.314237] [<ffffffff8106097a>] warn_slowpath_null+0x1a/0x20 02:46:05[ 539.314242] [<ffffffff813dc77f>] ata_eh_finish+0xdf/0xf0 02:46:05[ 539.314246] [<ffffffff813e441e>] sata_pmp_error_handler+0x2e/0x40 02:46:05[ 539.314256] [<ffffffffa00021bf>] ahci_error_handler+0x1f/0x90 [libahci] 02:46:05[ 539.314261] [<ffffffff813dd6d2>] ata_scsi_error+0x492/0x5e0 02:46:05[ 539.314266] [<ffffffff813b24cd>] scsi_error_handler+0x10d/0x190 02:46:05[ 539.314270] [<ffffffff813b23c0>] ? scsi_error_handler+0x0/0x190 02:46:05[ 539.314275] [<ffffffff8107f266>] kthread+0x96/0xa0 02:46:05[ 539.314280] [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10 02:46:05[ 539.314284] [<ffffffff8107f1d0>] ? kthread+0x0/0xa0 02:46:05[ 539.314288] [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10 02:46:05[ 539.314291] ---[ end trace 76dbffc2d5d49d9b ]--- 02:46:05[ 539.314296] ata1: EH complete 02:46:12[ 547.040091] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen 02:46:12[ 547.040098] ata1.00: failed command: IDENTIFY DEVICE 02:46:12[ 547.040106] ata1.00: cmd ec/00:00:00:00:00/00:00:00:00:00/40 tag 0 pio 512 in 02:46:12[ 547.040108] res 40/00:01:00:00:00/00:00:00:00:00/e0 Emask 0x4 (timeout) 02:46:12[ 547.040111] ata1.00: status: { DRDY } 02:46:12[ 547.040117] ata1: hard resetting link 02:46:13[ 547.390144] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:13[ 547.408430] ata1.00: configured for UDMA/100 02:46:13[ 547.408438] ------------[ cut here ]------------ 02:46:13[ 547.408447] WARNING: at /build/buildd/linux-2.6.35/drivers/ata/libata-eh.c:3638 ata_eh_finish+0xdf/0xf0() 02:46:13[ 547.408451] Hardware name: MacBookPro5,3 02:46:13[ 547.408453] Modules linked in: michael_mic arc4 xt_multiport binfmt_misc rfcomm sco bnep l2cap parport_pc ppdev nvidia(P) ipt_REJECT xt_recent snd_hda_codec_cirrus xt_limit xt_tcpudp ipt_addrtype xt_state snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi applesmc led_class ip6table_filter lib80211_crypt_tkip snd_rawmidi snd_seq_midi_event ip6_tables input_polldev hid_apple snd_seq wl(P) snd_timer snd_seq_device snd joydev bcm5974 usbhid mbp_nvidia_bl uvcvideo btusb videodev v4l1_compat v4l2_compat_ioctl32 nf_nat_irc hid nf_conntrack_irc soundcore snd_page_alloc i2c_nforce2 coretemp lib80211 bluetooth nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack lp parport iptable_filter ip_tables x_tables usb_storage firewire_ohci firewire_core forcedeth crc_itu_t ahci libahci 02:46:13[ 547.408528] Pid: 202, comm: scsi_eh_0 Tainted: P W 2.6.35-25-generic #44-Ubuntu 02:46:13[ 547.408531] Call Trace: 02:46:13[ 547.408540] [<ffffffff8106091f>] warn_slowpath_common+0x7f/0xc0 02:46:13[ 547.408544] [<ffffffff8106097a>] warn_slowpath_null+0x1a/0x20 02:46:13[ 547.408549] [<ffffffff813dc77f>] ata_eh_finish+0xdf/0xf0 02:46:13[ 547.408553] [<ffffffff813e441e>] sata_pmp_error_handler+0x2e/0x40 02:46:13[ 547.408563] [<ffffffffa00021bf>] ahci_error_handler+0x1f/0x90 [libahci] 02:46:13[ 547.408567] [<ffffffff813dd6d2>] ata_scsi_error+0x492/0x5e0 02:46:13[ 547.408572] [<ffffffff813b24cd>] scsi_error_handler+0x10d/0x190 02:46:13[ 547.408577] [<ffffffff813b23c0>] ? scsi_error_handler+0x0/0x190 02:46:13[ 547.408582] [<ffffffff8107f266>] kthread+0x96/0xa0 02:46:13[ 547.408587] [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10 02:46:13[ 547.408591] [<ffffffff8107f1d0>] ? kthread+0x0/0xa0 02:46:13[ 547.408595] [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10 02:46:13[ 547.408598] ---[ end trace 76dbffc2d5d49d9c ]--- 02:46:13[ 547.408620] ata1: EH complete 02:46:13[ 547.562470] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=600 02:46:13[ 547.671380] EXT4-fs (dm-2): re-mounted. Opts: commit=600 02:46:13[ 547.738198] ata1.00: limiting speed to UDMA/33:PIO4 02:46:13[ 547.738204] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5800000 action 0xe frozen t4 02:46:13[ 547.738208] ata1: irq_stat 0x00000040, connection status changed 02:46:13[ 547.738212] ata1: SError: { LinkSeq TrStaTrns DevExch } 02:46:13[ 547.738218] ata1: hard resetting link 02:46:13[ 547.738262] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5900000 action 0xe frozen t4 02:46:13[ 547.738265] ata2: irq_stat 0x00000040, connection status changed 02:46:13[ 547.738269] ata2: SError: { Dispar LinkSeq TrStaTrns DevExch } 02:46:13[ 547.738274] ata2: hard resetting link 02:46:14[ 548.482561] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:14[ 548.484083] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:14[ 548.486809] ata2.00: configured for UDMA/100 02:46:14[ 548.486818] ata2: EH complete 02:46:14[ 548.498998] ata1.00: configured for UDMA/33 02:46:14[ 548.499004] ata1: EH complete 02:46:18[ 552.410499] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro,commit=600 02:46:18[ 552.522521] EXT4-fs (dm-2): re-mounted. Opts: commit=600 02:46:18[ 552.529674] ata1: exception Emask 0x10 SAct 0x0 SErr 0x5800000 action 0xe frozen t4 02:46:18[ 552.529678] ata1: irq_stat 0x00000040, connection status changed 02:46:18[ 552.529680] ata1: SError: { LinkSeq TrStaTrns DevExch } 02:46:18[ 552.529684] ata1: hard resetting link 02:46:18[ 552.529716] ata2: exception Emask 0x10 SAct 0x0 SErr 0x5800000 action 0xe frozen t4 02:46:18[ 552.529718] ata2: irq_stat 0x00000040, connection status changed 02:46:18[ 552.529720] ata2: SError: { LinkSeq TrStaTrns DevExch } 02:46:18[ 552.529723] ata2: hard resetting link 02:46:19[ 553.280059] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:19[ 553.280068] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) 02:46:19[ 553.284141] ata2.00: configured for UDMA/100 02:46:19[ 553.284150] ata2: EH complete 02:46:19[ 553.301629] ata1.00: configured for UDMA/33 02:46:19[ 553.301637] ata1: EH complete

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• PostSharp, Obfuscation, and IL

  - by simonc

  Aspect-oriented programming (AOP) is a relatively new programming paradigm. Originating at Xerox PARC in 1994, the paradigm was first made available for general-purpose development as an extension to Java in 2001. From there, it has quickly been adapted for use in all the common languages used today. In the .NET world, one of the primary AOP toolkits is PostSharp. Attributes and AOP Normally, attributes in .NET are entirely a metadata construct. Apart from a few special attributes in the .NET framework, they have no effect whatsoever on how a class or method executes within the CLR. Only by using reflection at runtime can you access any attributes declared on a type or type member. PostSharp changes this. By declaring a custom attribute that derives from PostSharp.Aspects.Aspect, applying it to types and type members, and running the resulting assembly through the PostSharp postprocessor, you can essentially declare 'clever' attributes that change the behaviour of whatever the aspect has been applied to at runtime. A simple example of this is logging. By declaring a TraceAttribute that derives from OnMethodBoundaryAspect, you can automatically log when a method has been executed: public class TraceAttribute : PostSharp.Aspects.OnMethodBoundaryAspect { public override void OnEntry(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Entering {0}.{1}.", method.DeclaringType.FullName, method.Name)); } public override void OnExit(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Leaving {0}.{1}.", method.DeclaringType.FullName, method.Name)); } } [Trace] public void MethodToLog() { ... } Now, whenever MethodToLog is executed, the aspect will automatically log entry and exit, without having to add the logging code to MethodToLog itself. PostSharp Performance Now this does introduce a performance overhead - as you can see, the aspect allows access to the MethodBase of the method the aspect has been applied to. If you were limited to C#, you would be forced to retrieve each MethodBase instance using Type.GetMethod(), matching on the method name and signature. This is slow. Fortunately, PostSharp is not limited to C#. It can use any instruction available in IL. And in IL, you can do some very neat things. Ldtoken C# allows you to get the Type object corresponding to a specific type name using the typeof operator: Type t = typeof(Random); The C# compiler compiles this operator to the following IL: ldtoken [mscorlib]System.Random call class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle( valuetype [mscorlib]System.RuntimeTypeHandle) The ldtoken instruction obtains a special handle to a type called a RuntimeTypeHandle, and from that, the Type object can be obtained using GetTypeFromHandle. These are both relatively fast operations - no string lookup is required, only direct assembly and CLR constructs are used. However, a little-known feature is that ldtoken is not just limited to types; it can also get information on methods and fields, encapsulated in a RuntimeMethodHandle or RuntimeFieldHandle: // get a MethodBase for String.EndsWith(string) ldtoken method instance bool [mscorlib]System.String::EndsWith(string) call class [mscorlib]System.Reflection.MethodBase [mscorlib]System.Reflection.MethodBase::GetMethodFromHandle( valuetype [mscorlib]System.RuntimeMethodHandle) // get a FieldInfo for the String.Empty field ldtoken field string [mscorlib]System.String::Empty call class [mscorlib]System.Reflection.FieldInfo [mscorlib]System.Reflection.FieldInfo::GetFieldFromHandle( valuetype [mscorlib]System.RuntimeFieldHandle) These usages of ldtoken aren't usable from C# or VB, and aren't likely to be added anytime soon (Eric Lippert's done a blog post on the possibility of adding infoof, methodof or fieldof operators to C#). However, PostSharp deals directly with IL, and so can use ldtoken to get MethodBase objects quickly and cheaply, without having to resort to string lookups. The kicker However, there are problems. Because ldtoken for methods or fields isn't accessible from C# or VB, it hasn't been as well-tested as ldtoken for types. This has resulted in various obscure bugs in most versions of the CLR when dealing with ldtoken and methods, and specifically, generic methods and methods of generic types. This means that PostSharp was behaving incorrectly, or just plain crashing, when aspects were applied to methods that were generic in some way. So, PostSharp has to work around this. Without using the metadata tokens directly, the only way to get the MethodBase of generic methods is to use reflection: Type.GetMethod(), passing in the method name as a string along with information on the signature. Now, this works fine. It's slower than using ldtoken directly, but it works, and this only has to be done for generic methods. Unfortunately, this poses problems when the assembly is obfuscated. PostSharp and Obfuscation When using ldtoken, obfuscators don't affect how PostSharp operates. Because the ldtoken instruction directly references the type, method or field within the assembly, it is unaffected if the name of the object is changed by an obfuscator. However, the indirect loading used for generic methods was breaking, because that uses the name of the method when the assembly is put through the PostSharp postprocessor to lookup the MethodBase at runtime. If the name then changes, PostSharp can't find it anymore, and the assembly breaks. So, PostSharp needs to know about any changes an obfuscator does to an assembly. The way PostSharp does this is by adding another layer of indirection. When PostSharp obfuscation support is enabled, it includes an extra 'name table' resource in the assembly, consisting of a series of method & type names. When PostSharp needs to lookup a method using reflection, instead of encoding the method name directly, it looks up the method name at a fixed offset inside that name table: MethodBase genericMethod = typeof(ContainingClass).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: get_Prop1 21: set_Prop1 22: DoFoo 23: GetWibble When the assembly is later processed by an obfuscator, the obfuscator can replace all the method and type names within the name table with their new name. That way, the reflection lookups performed by PostSharp will now use the new names, and everything will work as expected: MethodBase genericMethod = typeof(#kGy).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: #kkA 21: #zAb 22: #EF5a 23: #2tg As you can see, this requires direct support by an obfuscator in order to perform these rewrites. Dotfuscator supports it, and now, starting with SmartAssembly 6.6.4, SmartAssembly does too. So, a relatively simple solution to a tricky problem, with some CLR bugs thrown in for good measure. You don't see those every day! Cross posted from Simple Talk.

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• Secure Your Wireless Router: 8 Things You Can Do Right Now

  - by Chris Hoffman

  A security researcher recently discovered a backdoor in many D-Link routers, allowing anyone to access the router without knowing the username or password. This isn’t the first router security issue and won’t be the last. To protect yourself, you should ensure that your router is configured securely. This is about more than just enabling Wi-Fi encryption and not hosting an open Wi-Fi network. Disable Remote Access Routers offer a web interface, allowing you to configure them through a browser. The router runs a web server and makes this web page available when you’re on the router’s local network. However, most routers offer a “remote access” feature that allows you to access this web interface from anywhere in the world. Even if you set a username and password, if you have a D-Link router affected by this vulnerability, anyone would be able to log in without any credentials. If you have remote access disabled, you’d be safe from people remotely accessing your router and tampering with it. To do this, open your router’s web interface and look for the “Remote Access,” “Remote Administration,” or “Remote Management” feature. Ensure it’s disabled — it should be disabled by default on most routers, but it’s good to check. Update the Firmware Like our operating systems, web browsers, and every other piece of software we use, router software isn’t perfect. The router’s firmware — essentially the software running on the router — may have security flaws. Router manufacturers may release firmware updates that fix such security holes, although they quickly discontinue support for most routers and move on to the next models. Unfortunately, most routers don’t have an auto-update feature like Windows and our web browsers do — you have to check your router manufacturer’s website for a firmware update and install it manually via the router’s web interface. Check to be sure your router has the latest available firmware installed. Change Default Login Credentials Many routers have default login credentials that are fairly obvious, such as the password “admin”. If someone gained access to your router’s web interface through some sort of vulnerability or just by logging onto your Wi-Fi network, it would be easy to log in and tamper with the router’s settings. To avoid this, change the router’s password to a non-default password that an attacker couldn’t easily guess. Some routers even allow you to change the username you use to log into your router. Lock Down Wi-Fi Access If someone gains access to your Wi-Fi network, they could attempt to tamper with your router — or just do other bad things like snoop on your local file shares or use your connection to downloaded copyrighted content and get you in trouble. Running an open Wi-Fi network can be dangerous. To prevent this, ensure your router’s Wi-Fi is secure. This is pretty simple: Set it to use WPA2 encryption and use a reasonably secure passphrase. Don’t use the weaker WEP encryption or set an obvious passphrase like “password”. Disable UPnP A variety of UPnP flaws have been found in consumer routers. Tens of millions of consumer routers respond to UPnP requests from the Internet, allowing attackers on the Internet to remotely configure your router. Flash applets in your browser could use UPnP to open ports, making your computer more vulnerable. UPnP is fairly insecure for a variety of reasons. To avoid UPnP-based problems, disable UPnP on your router via its web interface. If you use software that needs ports forwarded — such as a BitTorrent client, game server, or communications program — you’ll have to forward ports on your router without relying on UPnP. Log Out of the Router’s Web Interface When You’re Done Configuring It Cross site scripting (XSS) flaws have been found in some routers. A router with such an XSS flaw could be controlled by a malicious web page, allowing the web page to configure settings while you’re logged in. If your router is using its default username and password, it would be easy for the malicious web page to gain access. Even if you changed your router’s password, it would be theoretically possible for a website to use your logged-in session to access your router and modify its settings. To prevent this, just log out of your router when you’re done configuring it — if you can’t do that, you may want to clear your browser cookies. This isn’t something to be too paranoid about, but logging out of your router when you’re done using it is a quick and easy thing to do. Change the Router’s Local IP Address If you’re really paranoid, you may be able to change your router’s local IP address. For example, if its default address is 192.168.0.1, you could change it to 192.168.0.150. If the router itself were vulnerable and some sort of malicious script in your web browser attempted to exploit a cross site scripting vulnerability, accessing known-vulnerable routers at their local IP address and tampering with them, the attack would fail. This step isn’t completely necessary, especially since it wouldn’t protect against local attackers — if someone were on your network or software was running on your PC, they’d be able to determine your router’s IP address and connect to it. Install Third-Party Firmwares If you’re really worried about security, you could also install a third-party firmware such as DD-WRT or OpenWRT. You won’t find obscure back doors added by the router’s manufacturer in these alternative firmwares. Consumer routers are shaping up to be a perfect storm of security problems — they’re not automatically updated with new security patches, they’re connected directly to the Internet, manufacturers quickly stop supporting them, and many consumer routers seem to be full of bad code that leads to UPnP exploits and easy-to-exploit backdoors. It’s smart to take some basic precautions. Image Credit: Nuscreen on Flickr     

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• Delight and Excite

  - by Applications User Experience

  Mick McGee, CEO & President, EchoUser Editor’s Note: EchoUser is a User Experience design firm in San Francisco and a member of the Oracle Usability Advisory Board. Mick and his staff regularly consult on Oracle Applications UX projects. Being part of a user experience design firm, we have the luxury of working with a lot of great people across many great companies. We get to help people solve their problems.  At least we used to. The basic design challenge is still the same; however, the goal is not necessarily to solve “problems” anymore; it is, “I want our products to delight and excite!” The question for us as UX professionals is how to design to those goals, and then how to assess them from a usability perspective. I’m not sure where I first heard “delight and excite” (A book? blog post? Facebook  status? Steve Jobs quote?), but now I hear these listed as user experience goals all the time. In particular, somewhat paradoxically, I routinely hear them in enterprise software conversations. And when asking these same enterprise companies what will make the project successful, we very often hear, “Make it like Apple.” In past days, it was “make it like Yahoo (or Amazon or Google“) but now Apple is the common benchmark. Steve Jobs and Apple were not secrets, but with Jobs’ passing and Apple becoming the world’s most valuable company in the last year, the impact of great design and experience is suddenly very widespread. In particular, users’ expectations have gone way up. Being an enterprise company is no shield to the general expectations that users now have, for all products. Designing a “Minimum Viable Product” The user experience challenge has historically been, to echo the words of Eric Ries (author of Lean Startup) , to create a “minimum viable product”: the proverbial, “make it good enough”. But, in our profession, the “minimum viable” part of that phrase has oftentimes, unfortunately, referred to the design and user experience. Technology typically dominated the focus of the biggest, most successful companies. Few have had the laser focus of Apple to also create and sell design and user experience alongside great technology. But now that Apple is the most valuable company in the world, copying their success is a common undertaking. Great design is now a premium offering that everyone wants, from the one-person startup to the largest companies, consumer and enterprise. This emerging business paradigm will have significant impact across the user experience design process and profession. One area that particularly interests me is, how are we going to evaluate these new emerging “delight and excite” experiences, which are further customized to each particular domain? How to Measure “Delight and Excite” Traditional usability measures of task completion rate, assists, time, and errors are still extremely useful in many situations; however, they are too blunt to offer much insight into emerging experiences “Satisfaction” is usually assessed in user testing, in roughly equivalent importance to the above objective metrics. Various surveys and scales have provided ways to measure satisfying UX, with whatever questions they include. However, to meet the demands of new business goals and keep users at the center of design and development processes, we have to explore new methods to better capture custom-experience goals and emotion-driven user responses. We have had success assessing custom experiences, including “delight and excite”, by employing a variety of user testing methods that tend to combine formative and summative techniques (formative being focused more on identifying usability issues and ways to improve design, and summative focused more on metrics). Our most successful tool has been one we’ve been using for a long time, Magnitude Estimation Technique (MET). But it’s not necessarily about MET as a measure, rather how it is created. Caption: For one client, EchoUser did two rounds of testing.  Each test was a mix of performing representative tasks and gathering qualitative impressions. Each user participated in an in-person moderated 1-on-1 session for 1 hour, using a testing set-up where they held the phone. The primary goal was to identify usability issues and recommend design improvements. MET is based on a definition of the desired experience, which users will then use to rate items of interest (usually tasks in a usability test). In other words, a custom experience definition needs to be created. This can then be used to measure satisfaction in accomplishing tasks; “delight and excite”; or anything else from strategic goals, user demands, or elsewhere. For reference, our standard MET definition in usability testing is: “User experience is your perception of how easy to use, well designed and productive an interface is to complete tasks.” Articulating the User Experience We’ve helped construct experience definitions for several clients to better match their business goals. One example is a modification of the above that was needed for a company that makes medical-related products: “User experience is your perception of how easy to use, well-designed, productive and safe an interface is for conducting tasks. ‘Safe’ is how free an environment (including devices, software, facilities, people, etc.) is from danger, risk, and injury.” Another example is from a company that is pushing hard to incorporate “delight” into their enterprise business line: “User experience is your perception of a product’s ease of use and learning, satisfaction and delight in design, and ability to accomplish objectives.” I find the last one particularly compelling in that there is little that identifies the experience as being for a highly technical enterprise application. That definition could easily be applied to any number of consumer products. We have gone further than the above, including “sexy” and “cool” where decision-makers insisted they were part of the desired experience. We also applied it to completely different experiences where the “interface” was, for example, riding public transit, the “tasks” were train rides, and we followed the participants through the train-riding journey and rated various aspects accordingly: “A good public transportation experience is a cost-effective way of reliably, conveniently, and safely getting me to my intended destination on time.” To construct these definitions, we’ve employed both bottom-up and top-down approaches, depending on circumstances. For bottom-up, user inputs help dictate the terms that best fit the desired experience (usually by way of cluster and factor analysis). Top-down depends on strategic, visionary goals expressed by upper management that we then attempt to integrate into product development (e.g., “delight and excite”). We like a combination of both approaches to push the innovation envelope, but still be mindful of current user concerns. Hopefully the idea of crafting your own custom experience, and a way to measure it, can provide you with some ideas how you can adapt your user experience needs to whatever company you are in. Whether product-development or service-oriented, nearly every company is ultimately providing a user experience. The Bottom Line Creating great experiences may have been popularized by Steve Jobs and Apple, but I’ll be honest, it’s a good feeling to be moving from “good enough” to “delight and excite,” despite the challenge that entails. In fact, it’s because of that challenge that we will expand what we do as UX professionals to help deliver and assess those experiences. I’m excited to see how we, Oracle, and the rest of the industry will live up to that challenge.

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• Blogging locally and globally–my experience

  - by DigiMortal

  In Baltic MVP Summit 2011 there was discussion about having two blogs - one for local and another for global audience – and how to publish once written information in these blogs. There are many ways how to optimize your blogging activities if you have more than one audience and here you can find my experiences, best practices and advices about this topic. My two blogs I have to working blogs: this one here technology and programming blog for local market My local blog is almost five years old and it makes it one of the oldest company blogs in Estonia. It is still active and I write there as much as I have time for it. This blog here is active since September 2007, so it is about 3.5 years old right now. Both of these blogs are  my major hits in my MVP carrier and they have very good web statistics too. My local blog My local blog is about programming, web and technology. It has way wider target audience then this blog here has. By example, in my local blog I blog also about local events, cool new concept phones, different webs providing some interesting services etc. But local guys can find there also my postings about how to solve one or another programming problem and postings about Microsoft technologies I am playing with. This far my local blog has a lot of readers for such a small country that Estonia is. This blog has made me a lot of cool contacts and I have had there a lot of interesting discussions about different technical topics. Why I started this blog? Living in small country is different than living in big country. In small country you have less people and therefore smaller audience so you have to target more than one technical topic to find enough readers. In a same time you are still interested in your main topics and you want to reach to more people who are sharing same interests with you. Practically one day y will grow out from local market and you go global. This is how this blog was born. Was it worth to create, promote and mess with it? Every second I have put on my time to this blog has been worth of it. Thanks to this blog I have found new good friends and without them I think it is more boring to work on different problems and solutions. Defining target audiences One thing you should always do when having more than one blog is defining target audiences. If you are just technomaniac interested in sharing your stuff and make some new friends and have something to write to your MVP nomination form then you don’t have to go through complex targeting process. You can do it simple way and same effectively. Here is how I defined target audiences to my blogs: local blog – reader of my local blog is IT professional, software developer, technology innovator or just some guy who is interested in technology,   this blog – reader of this blog is experienced professional software developer who works on Microsoft technologies or software developer who is open minded and open to new technologies and interesting solutions to development problems. You can see how local blog – due to small market with less people – has wider definition for audience while this blog is heavily targeted to Microsoft technologies and specially to software development. On practical side these decisions are also made well I think because it is very hard to build up popular common IT blog. On global level it is better to target some specific niche and find readers who are professionals on your favorite topics. Thanks to this blog I have found new friends who are professional developers and I am very happy about all the discussions I have had with them. Publishing content to different blogs My local blog and this blog have some overlapping topics like .NET, databases and SEO. Due to this overlapping there is question: when I write posting to my local blog then should I have to publish same thing in my global blog? And if I write something to my global blog then should I publish same thing also in my local blog? Well, it really depends on the definition of your target audiences. If they match then of course it is good idea to translate you post and publish it also to another blog. But if you have different audiences then you may need to modify your posting before publishing it. The questions you have to answer are: is target audience interested in this topic? is target audience expecting more specific and deeper handling of this topic or are they expecting more general handling of topic? is the problem you are discussing actual for target audience or not? You have to answer these questions and after that make your decision. If you need to modify your original posting then take some time and do it. Provide quality to all your readers because they will respect you if you respect them. Cross-posting and referencing It is tempting to save time that preparing some blog post takes and if you have are done with posting in one blog it may seem like good idea to make short posting to another blog and add reference to first one where topic is discussed longer. Well, don’t do it – all your readers expect good quality content from you and jumping from one blog post to another is disturbing for them. Of course, there is problem with differences between target audiences. You may have wider target audience and some people may be interested in more specific handling of topic. In this case feel free to refer your blog you are writing in english. This is not working very well in opposite direction because almost all my global blog readers understand english but not estonian. By example, estonian language is complex one and online translating tools make very poor translations from estonian language. This is why I don’t even plan to publish postings here that refer to my local blog for more information. I am keeping these two blogs as two different worlds and if there is posting that fits well to both blogs I will write my posting to one blog and then answer previous three questions before posting same thing to another blog. Conclusion Growing out of your local market is not anything mysterious if you are living in small country. As it is harder to find people there who are interested in same topics with you then sooner or later you will start finding these new contacts from global audience. Global audience is bigger and to be visible there you must provide high quality content to your audience. It is something you will learn over time and you will learn every day something new when you are posting to your global blog. You may ask: if global blog is much more complex thing to do then is it worth to do at all? My answer is: yes, do it for sure. It is not easy thing to do when you start but if you work on your global blog and improve it over time you will get over all obstacles pretty soon. Just don’t forget one thing – content is king and your readers expect high quality from you.

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• Increase Max Pool Size ERROR when using SYBASE ASE ADO.NET data provider

  - by Brani

  I have made a program in VB.net (visual studio 2003) that connects to a SYBASE ASE database using the ADO.NET data provider. Recently, after a hard disk failure, I restored the program's code from a (rather old) backup. But now the connection fails with a message that does not remind me of anything that I have seen before. Here is the code and the error message: Dim cn As New AseConnection("Data Source='my_server';Port='5000';UID='sa';PWD='my_pwd';Database='my_db';") cn.Open() Error message: Sybase.Data.AseClient.AseException - Cannot allocate more connections. Connection pool is at maximum. Increase Max Pool Size Can anybody help me?

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• Localhost not working after installing PHP on Mountain Lion

  - by zen

  I've installed php using brew install php54 --with-mysql, I've set up all the path correctly. which php will give me /usr/local/bin/php php -v will give me PHP 5.4.8 (cli) (built: Nov 20 2012 09:29:31) php --ini will give me: Configuration File (php.ini) Path: /usr/local/etc/php/5.4 Loaded Configuration File: /usr/local/etc/php/5.4/php.ini Scan for additional .ini files in: /usr/local/etc/php/5.4/conf.d Additional .ini files parsed: (none) apachectl -V | grep httpd.conf will give me -D SERVER_CONFIG_FILE="/private/etc/apache2/httpd.conf" I believe everything is correct, but after I restarted my apache I keep getting error Service Temporarily Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later. This is my httpd.conf file: # # This is the main Apache HTTP server configuration file. It contains the # configuration directives that give the server its instructions. # See <URL:http://httpd.apache.org/docs/2.2> for detailed information. # In particular, see # <URL:http://httpd.apache.org/docs/2.2/mod/directives.html> # for a discussion of each configuration directive. # # Do NOT simply read the instructions in here without understanding # what they do. They're here only as hints or reminders. If you are unsure # consult the online docs. You have been warned. # # Configuration and logfile names: If the filenames you specify for many # of the server's control files begin with "/" (or "drive:/" for Win32), the # server will use that explicit path. If the filenames do *not* begin # with "/", the value of ServerRoot is prepended -- so "log/foo_log" # with ServerRoot set to "/usr" will be interpreted by the # server as "/usr/log/foo_log". # # ServerRoot: The top of the directory tree under which the server's # configuration, error, and log files are kept. # # Do not add a slash at the end of the directory path. If you point # ServerRoot at a non-local disk, be sure to point the LockFile directive # at a local disk. If you wish to share the same ServerRoot for multiple # httpd daemons, you will need to change at least LockFile and PidFile. # ServerRoot "/usr" # # Listen: Allows you to bind Apache to specific IP addresses and/or # ports, instead of the default. See also the <VirtualHost> # directive. # # Change this to Listen on specific IP addresses as shown below to # prevent Apache from glomming onto all bound IP addresses. # #Listen 12.34.56.78:80 Listen 127.0.0.1:80 # # Dynamic Shared Object (DSO) Support # # To be able to use the functionality of a module which was built as a DSO you # have to place corresponding `LoadModule' lines at this location so the # directives contained in it are actually available _before_ they are used. # Statically compiled modules (those listed by `httpd -l') do not need # to be loaded here. # # Example: # LoadModule foo_module modules/mod_foo.so # LoadModule authn_file_module libexec/apache2/mod_authn_file.so LoadModule authn_dbm_module libexec/apache2/mod_authn_dbm.so LoadModule authn_anon_module libexec/apache2/mod_authn_anon.so LoadModule authn_dbd_module libexec/apache2/mod_authn_dbd.so LoadModule authn_default_module libexec/apache2/mod_authn_default.so LoadModule authz_host_module libexec/apache2/mod_authz_host.so LoadModule authz_groupfile_module libexec/apache2/mod_authz_groupfile.so LoadModule authz_user_module libexec/apache2/mod_authz_user.so LoadModule authz_dbm_module libexec/apache2/mod_authz_dbm.so LoadModule authz_owner_module libexec/apache2/mod_authz_owner.so LoadModule authz_default_module libexec/apache2/mod_authz_default.so LoadModule auth_basic_module libexec/apache2/mod_auth_basic.so LoadModule auth_digest_module libexec/apache2/mod_auth_digest.so LoadModule cache_module libexec/apache2/mod_cache.so LoadModule disk_cache_module libexec/apache2/mod_disk_cache.so LoadModule mem_cache_module libexec/apache2/mod_mem_cache.so LoadModule dbd_module libexec/apache2/mod_dbd.so LoadModule dumpio_module libexec/apache2/mod_dumpio.so LoadModule reqtimeout_module libexec/apache2/mod_reqtimeout.so LoadModule ext_filter_module libexec/apache2/mod_ext_filter.so LoadModule include_module libexec/apache2/mod_include.so LoadModule filter_module libexec/apache2/mod_filter.so LoadModule substitute_module libexec/apache2/mod_substitute.so LoadModule deflate_module libexec/apache2/mod_deflate.so LoadModule log_config_module libexec/apache2/mod_log_config.so LoadModule log_forensic_module libexec/apache2/mod_log_forensic.so LoadModule logio_module libexec/apache2/mod_logio.so LoadModule env_module libexec/apache2/mod_env.so LoadModule mime_magic_module libexec/apache2/mod_mime_magic.so LoadModule cern_meta_module libexec/apache2/mod_cern_meta.so LoadModule expires_module libexec/apache2/mod_expires.so LoadModule headers_module libexec/apache2/mod_headers.so LoadModule ident_module libexec/apache2/mod_ident.so LoadModule usertrack_module libexec/apache2/mod_usertrack.so #LoadModule unique_id_module libexec/apache2/mod_unique_id.so LoadModule setenvif_module libexec/apache2/mod_setenvif.so LoadModule version_module libexec/apache2/mod_version.so LoadModule proxy_module libexec/apache2/mod_proxy.so LoadModule proxy_connect_module libexec/apache2/mod_proxy_connect.so LoadModule proxy_ftp_module libexec/apache2/mod_proxy_ftp.so LoadModule proxy_http_module libexec/apache2/mod_proxy_http.so LoadModule proxy_scgi_module libexec/apache2/mod_proxy_scgi.so LoadModule proxy_ajp_module libexec/apache2/mod_proxy_ajp.so LoadModule proxy_balancer_module libexec/apache2/mod_proxy_balancer.so LoadModule ssl_module libexec/apache2/mod_ssl.so LoadModule mime_module libexec/apache2/mod_mime.so LoadModule dav_module libexec/apache2/mod_dav.so LoadModule status_module libexec/apache2/mod_status.so LoadModule autoindex_module libexec/apache2/mod_autoindex.so LoadModule asis_module libexec/apache2/mod_asis.so LoadModule info_module libexec/apache2/mod_info.so LoadModule cgi_module libexec/apache2/mod_cgi.so LoadModule dav_fs_module libexec/apache2/mod_dav_fs.so LoadModule vhost_alias_module libexec/apache2/mod_vhost_alias.so LoadModule negotiation_module libexec/apache2/mod_negotiation.so LoadModule dir_module libexec/apache2/mod_dir.so LoadModule imagemap_module libexec/apache2/mod_imagemap.so LoadModule actions_module libexec/apache2/mod_actions.so LoadModule speling_module libexec/apache2/mod_speling.so LoadModule userdir_module libexec/apache2/mod_userdir.so LoadModule alias_module libexec/apache2/mod_alias.so LoadModule rewrite_module libexec/apache2/mod_rewrite.so #LoadModule perl_module libexec/apache2/mod_perl.so LoadModule php5_module local/Cellar/php54/5.4.8/libexec/apache2/libphp5.so #LoadModule hfs_apple_module libexec/apache2/mod_hfs_apple.so <IfModule !mpm_netware_module> <IfModule !mpm_winnt_module> # # If you wish httpd to run as a different user or group, you must run # httpd as root initially and it will switch. # # User/Group: The name (or #number) of the user/group to run httpd as. # It is usually good practice to create a dedicated user and group for # running httpd, as with most system services. # User _www Group _www </IfModule> </IfModule> # 'Main' server configuration # # The directives in this section set up the values used by the 'main' # server, which responds to any requests that aren't handled by a # <VirtualHost> definition. These values also provide defaults for # any <VirtualHost> containers you may define later in the file. # # All of these directives may appear inside <VirtualHost> containers, # in which case these default settings will be overridden for the # virtual host being defined. # # # ServerAdmin: Your address, where problems with the server should be # e-mailed. This address appears on some server-generated pages, such # as error documents. e.g. [email protected] # ServerAdmin [email protected] # # ServerName gives the name and port that the server uses to identify itself. # This can often be determined automatically, but we recommend you specify # it explicitly to prevent problems during startup. # # If your host doesn't have a registered DNS name, enter its IP address here. # #ServerName www.example.com:80 # # DocumentRoot: The directory out of which you will serve your # documents. By default, all requests are taken from this directory, but # symbolic links and aliases may be used to point to other locations. # DocumentRoot "/Library/WebServer/Documents" # # Each directory to which Apache has access can be configured with respect # to which services and features are allowed and/or disabled in that # directory (and its subdirectories). # # First, we configure the "default" to be a very restrictive set of # features. # <Directory /> Options FollowSymLinks AllowOverride None Order deny,allow Deny from all </Directory> # # Note that from this point forward you must specifically allow # particular features to be enabled - so if something's not working as # you might expect, make sure that you have specifically enabled it # below. # # # This should be changed to whatever you set DocumentRoot to. # <Directory "/Library/WebServer/Documents"> # # Possible values for the Options directive are "None", "All", # or any combination of: # Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews # # Note that "MultiViews" must be named *explicitly* --- "Options All" # doesn't give it to you. # # The Options directive is both complicated and important. Please see # http://httpd.apache.org/docs/2.2/mod/core.html#options # for more information. # Options Indexes FollowSymLinks MultiViews # # AllowOverride controls what directives may be placed in .htaccess files. # It can be "All", "None", or any combination of the keywords: # Options FileInfo AuthConfig Limit # AllowOverride None # # Controls who can get stuff from this server. # Order allow,deny Allow from all </Directory> # # DirectoryIndex: sets the file that Apache will serve if a directory # is requested. # <IfModule dir_module> DirectoryIndex index.html </IfModule> # # The following lines prevent .htaccess and .htpasswd files from being # viewed by Web clients. # <FilesMatch "^\.([Hh][Tt]|[Dd][Ss]_[Ss])"> Order allow,deny Deny from all Satisfy All </FilesMatch> # # Apple specific filesystem protection. # <Files "rsrc"> Order allow,deny Deny from all Satisfy All </Files> <DirectoryMatch ".*\.\.namedfork"> Order allow,deny Deny from all Satisfy All </DirectoryMatch> # # ErrorLog: The location of the error log file. # If you do not specify an ErrorLog directive within a <VirtualHost> # container, error messages relating to that virtual host will be # logged here. If you *do* define an error logfile for a <VirtualHost> # container, that host's errors will be logged there and not here. # ErrorLog "/private/var/log/apache2/error_log" # # LogLevel: Control the number of messages logged to the error_log. # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. # LogLevel warn <IfModule log_config_module> # # The following directives define some format nicknames for use with # a CustomLog directive (see below). # LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %b" common <IfModule logio_module> # You need to enable mod_logio.c to use %I and %O LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio </IfModule> # # The location and format of the access logfile (Common Logfile Format). # If you do not define any access logfiles within a <VirtualHost> # container, they will be logged here. Contrariwise, if you *do* # define per-<VirtualHost> access logfiles, transactions will be # logged therein and *not* in this file. # CustomLog "/private/var/log/apache2/access_log" common # # If you prefer a logfile with access, agent, and referer information # (Combined Logfile Format) you can use the following directive. # #CustomLog "/private/var/log/apache2/access_log" combined </IfModule> <IfModule alias_module> # # Redirect: Allows you to tell clients about documents that used to # exist in your server's namespace, but do not anymore. The client # will make a new request for the document at its new location. # Example: # Redirect permanent /foo http://www.example.com/bar # # Alias: Maps web paths into filesystem paths and is used to # access content that does not live under the DocumentRoot. # Example: # Alias /webpath /full/filesystem/path # # If you include a trailing / on /webpath then the server will # require it to be present in the URL. You will also likely # need to provide a <Directory> section to allow access to # the filesystem path. # # ScriptAlias: This controls which directories contain server scripts. # ScriptAliases are essentially the same as Aliases, except that # documents in the target directory are treated as applications and # run by the server when requested rather than as documents sent to the # client. The same rules about trailing "/" apply to ScriptAlias # directives as to Alias. # ScriptAliasMatch ^/cgi-bin/((?!(?i:webobjects)).*$) "/Library/WebServer/CGI-Executables/$1" </IfModule> <IfModule cgid_module> # # ScriptSock: On threaded servers, designate the path to the UNIX # socket used to communicate with the CGI daemon of mod_cgid. # #Scriptsock /private/var/run/cgisock </IfModule> # # "/Library/WebServer/CGI-Executables" should be changed to whatever your ScriptAliased # CGI directory exists, if you have that configured. # <Directory "/Library/WebServer/CGI-Executables"> AllowOverride None Options None Order allow,deny Allow from all </Directory> # # DefaultType: the default MIME type the server will use for a document # if it cannot otherwise determine one, such as from filename extensions. # If your server contains mostly text or HTML documents, "text/plain" is # a good value. If most of your content is binary, such as applications # or images, you may want to use "application/octet-stream" instead to # keep browsers from trying to display binary files as though they are # text. # DefaultType text/plain <IfModule mime_module> # # TypesConfig points to the file containing the list of mappings from # filename extension to MIME-type. # TypesConfig /private/etc/apache2/mime.types # # AddType allows you to add to or override the MIME configuration # file specified in TypesConfig for specific file types. # #AddType application/x-gzip .tgz # # AddEncoding allows you to have certain browsers uncompress # information on the fly. Note: Not all browsers support this. # #AddEncoding x-compress .Z #AddEncoding x-gzip .gz .tgz # # If the AddEncoding directives above are commented-out, then you # probably should define those extensions to indicate media types: # AddType application/x-compress .Z AddType application/x-gzip .gz .tgz # # AddHandler allows you to map certain file extensions to "handlers": # actions unrelated to filetype. These can be either built into the server # or added with the Action directive (see below) # # To use CGI scripts outside of ScriptAliased directories: # (You will also need to add "ExecCGI" to the "Options" directive.) # #AddHandler cgi-script .cgi # For type maps (negotiated resources): #AddHandler type-map var # # Filters allow you to process content before it is sent to the client. # # To parse .shtml files for server-side includes (SSI): # (You will also need to add "Includes" to the "Options" directive.) # #AddType text/html .shtml #AddOutputFilter INCLUDES .shtml </IfModule> # # The mod_mime_magic module allows the server to use various hints from the # contents of the file itself to determine its type. The MIMEMagicFile # directive tells the module where the hint definitions are located. # #MIMEMagicFile /private/etc/apache2/magic # # Customizable error responses come in three flavors: # 1) plain text 2) local redirects 3) external redirects # # Some examples: #ErrorDocument 500 "The server made a boo boo." #ErrorDocument 404 /missing.html #ErrorDocument 404 "/cgi-bin/missing_handler.pl" #ErrorDocument 402 http://www.example.com/subscription_info.html # # # MaxRanges: Maximum number of Ranges in a request before # returning the entire resource, or one of the special # values 'default', 'none' or 'unlimited'. # Default setting is to accept 200 Ranges. #MaxRanges unlimited # # EnableMMAP and EnableSendfile: On systems that support it, # memory-mapping or the sendfile syscall is used to deliver # files. This usually improves server performance, but must # be turned off when serving from networked-mounted # filesystems or if support for these functions is otherwise # broken on your system. # #EnableMMAP off #EnableSendfile off # 6894961 TraceEnable off # Supplemental configuration # # The configuration files in the /private/etc/apache2/extra/ directory can be # included to add extra features or to modify the default configuration of # the server, or you may simply copy their contents here and change as # necessary. # Server-pool management (MPM specific) Include /private/etc/apache2/extra/httpd-mpm.conf # Multi-language error messages #Include /private/etc/apache2/extra/httpd-multilang-errordoc.conf # Fancy directory listings Include /private/etc/apache2/extra/httpd-autoindex.conf # Language settings Include /private/etc/apache2/extra/httpd-languages.conf # User home directories Include /private/etc/apache2/extra/httpd-userdir.conf # Real-time info on requests and configuration #Include /private/etc/apache2/extra/httpd-info.conf # Virtual hosts #Include /private/etc/apache2/extra/httpd-vhosts.conf # Local access to the Apache HTTP Server Manual Include /private/etc/apache2/extra/httpd-manual.conf # Distributed authoring and versioning (WebDAV) #Include /private/etc/apache2/extra/httpd-dav.conf # Various default settings #Include /private/etc/apache2/extra/httpd-default.conf # Secure (SSL/TLS) connections #Include /private/etc/apache2/extra/httpd-ssl.conf # # Note: The following must must be present to support # starting without SSL on platforms with no /dev/random equivalent # but a statically compiled-in mod_ssl. # <IfModule ssl_module> SSLRandomSeed startup builtin SSLRandomSeed connect builtin </IfModule> Include /private/etc/apache2/other/*.conf Please help me, I've spent 2 days trying to make it work. Btw error log keep saying [Tue Nov 20 10:47:40 2012] [error] proxy: HTTP: disabled connection for (localhost) and [Tue Nov 20 11:59:32 2012] [error] (61)Connection refused: proxy: HTTP: attempt to connect to [fe80::1]:20559 (localhost) failed

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• How to reduce iOS AVPlayer start delay

  - by Bernt Habermeier

  Note, for the below question: All assets are local on the device -- no network streaming is taking place. The videos contain audio tracks. I'm working on an iOS application that requires playing video files with minimum delay to start the video clip in question. Unfortunately we do not know what specific video clip is next until we actually need to start it up. Specifically: When one video clip is playing, we will know what the next set of (roughly) 10 video clips are, but we don't know which one exactly, until it comes time to 'immediately' play the next clip. What I've done to look at actual start delays is to call addBoundaryTimeObserverForTimes on the video player, with a time period of one millisecond to see when the video actually started to play, and I take the difference of that time stamp with the first place in the code that indicates which asset to start playing. From what I've seen thus-far, I have found that using the combination of AVAsset loading, and then creating an AVPlayerItem from that once it's ready, and then waiting for AVPlayerStatusReadyToPlay before I call play, tends to take between 1 and 3 seconds to start the clip. I've since switched to what I think is roughly equivalent: calling [AVPlayerItem playerItemWithURL:] and waiting for AVPlayerItemStatusReadyToPlay to play. Roughly same performance. One thing I'm observing is that the first AVPlayer item load is slower than the rest. Seems one idea is to pre-flight the AVPlayer with a short / empty asset before trying to play the first video might be of good general practice. [http://stackoverflow.com/questions/900461/slow-start-for-avaudioplayer-the-first-time-a-sound-is-played] I'd love to get the video start times down as much as possible, and have some ideas of things to experiment with, but would like some guidance from anyone that might be able to help. Update: idea 7, below, as-implemented yields switching times of around 500 ms. This is an improvement, but it it'd be nice to get this even faster. Idea 1: Use N AVPlayers (won't work) Using ~ 10 AVPPlayer objects and start-and-pause all ~ 10 clips, and once we know which one we really need, switch to, and un-pause the correct AVPlayer, and start all over again for the next cycle. I don't think this works, because I've read there is roughly a limit of 4 active AVPlayer's in iOS. There was someone asking about this on StackOverflow here, and found out about the 4 AVPlayer limit: fast-switching-between-videos-using-avfoundation Idea 2: Use AVQueuePlayer (won't work) I don't believe that shoving 10 AVPlayerItems into an AVQueuePlayer would pre-load them all for seamless start. AVQueuePlayer is a queue, and I think it really only makes the next video in the queue ready for immediate playback. I don't know which one out of ~10 videos we do want to play back, until it's time to start that one. ios-avplayer-video-preloading Idea 3: Load, Play, and retain AVPlayerItems in background (not 100% sure yet -- but not looking good) I'm looking at if there is any benefit to load and play the first second of each video clip in the background (suppress video and audio output), and keep a reference to each AVPlayerItem, and when we know which item needs to be played for real, swap that one in, and swap the background AVPlayer with the active one. Rinse and Repeat. The theory would be that recently played AVPlayer/AVPlayerItem's may still hold some prepared resources which would make subsequent playback faster. So far, I have not seen benefits from this, but I might not have the AVPlayerLayer setup correctly for the background. I doubt this will really improve things from what I've seen. Idea 4: Use a different file format -- maybe one that is faster to load? I'm currently using .m4v's (video-MPEG4) H.264 format. I have not played around with other formats, but it may well be that some formats are faster to decode / get ready than others. Possible still using video-MPEG4 but with a different codec, or maybe quicktime? Maybe a lossless video format where decoding / setup is faster? Idea 5: Combination of lossless video format + AVQueuePlayer If there is a video format that is fast to load, but maybe where the file size is insane, one idea might be to pre-prepare the first 10 seconds of each video clip with a version that is boated but faster to load, but back that up with an asset that is encoded in H.264. Use an AVQueuePlayer, and add the first 10 seconds in the uncompressed file format, and follow that up with one that is in H.264 which gets up to 10 seconds of prepare/preload time. So I'd get 'the best' of both worlds: fast start times, but also benefits from a more compact format. Idea 6: Use a non-standard AVPlayer / write my own / use someone else's Given my needs, maybe I can't use AVPlayer, but have to resort to AVAssetReader, and decode the first few seconds (possibly write raw file to disk), and when it comes to playback, make use of the raw format to play it back fast. Seems like a huge project to me, and if I go about it in a naive way, it's unclear / unlikely to even work better. Each decoded and uncompressed video frame is 2.25 MB. Naively speaking -- if we go with ~ 30 fps for the video, I'd end up with ~60 MB/s read-from-disk requirement, which is probably impossible / pushing it. Obviously we'd have to do some level of image compression (perhaps native openGL/es compression formats via PVRTC)... but that's kind crazy. Maybe there is a library out there that I can use? Idea 7: Combine everything into a single movie asset, and seekToTime One idea that might be easier than some of the above, is to combine everything into a single movie, and use seekToTime. The thing is that we'd be jumping all around the place. Essentially random access into the movie. I think this may actually work out okay: avplayer-movie-playing-lag-in-ios5 Which approach do you think would be best? So far, I've not made that much progress in terms of reducing the lag.

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• vir-install virtual machine hang on Probbing EDD

  - by user2256235

  I'm using vir-stall virtual machine, and my command is virt-install --name=gust --vcpus=4 --ram=8192 --network bridge:br0 --cdrom=/opt/rhel-server-6.2-x86_64-dvd.iso --disk path=/opt/as1/as1.img,size=50 --accelerate After running the command, it hangs on probing EDD, - Press the <ENTER> key to begin the installation process. +----------------------------------------------------------+ | Welcome to Red Hat Enterprise Linux 6.2! | |----------------------------------------------------------| | Install or upgrade an existing system | | Install system with basic video driver | | Rescue installed system | | Boot from local drive | | Memory test | | | | | | | | | | | | | | | +----------------------------------------------------------+ Press [Tab] to edit options Automatic boot in 57 seconds... Loading vmlinuz...... Loading initrd.img...............................ready. Probing EDD (edd=off to disable)... ok ÿ Previously, I wait a long time, it seems no marching. After I press ctrl + ] and stop it. I find it was running using virsh list, but I cannot console it using virsh concole gust. Any problem and how should I do. Many Thanks

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• Explain difference in SQLIO numbers for RAID 0 versus RAID 5 over 6 disks

  - by markn

  When using the SQLIO benchmark tool on a 4-core Dell server with 6 15k 450GB (fast) drives, RAID 0, we found the max throughput was 2MB per second. But when configured as RAID 5, we get 30 MB per second. It seems that the RAID controller, Dell Perc 5i integrated controller, is maxing out the throughput per disk. With RAID 5, I expect to get a bump due to stripping, but not a 15x difference. Like good programmers, we suspect the hardware , but we could be missing something. This is predominately write traffic.

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• SharePoint - Unable to complete this operation. Please contact your administrator

  - by Linda

  When I try and save something to my list in SharePoint I get the following error: Unable to complete this operation. Please contact your administrator. at Microsoft.SharePoint.Library.SPRequestInternalClass.PutFile(String bstrUrl, String bstrWebRelativeUrl, Object varFile, PutFileOpt PutFileOpt, String bstrCreatedBy, String bstrModifiedBy, Int32 iCreatedByID, Int32 iModifiedByID, Object varTimeCreated, Object varTimeLastModified, Object varProperties, String bstrCheckinComment, UInt32& pdwVirusCheckStatus, String& pVirusCheckMessage) at Microsoft.SharePoint.Library.SPRequest.PutFile(String bstrUrl, String bstrWebRelativeUrl, Object varFile, PutFileOpt PutFileOpt, String bstrCreatedBy, String bstrModifiedBy, Int32 iCreatedByID, Int32 iModifiedByID, Object varTimeCreated, Object varTimeLastModified, Object varProperties, String bstrCheckinComment, UInt32& pdwVirusCheckStatus, String& pVirusCheckMessage) A quick google says it may be a problem with disk space on the Database. I have checked my server and the smallest amount of space left on any of the drives is ~4GB. The file size is 1MB. I have checked the database and the data file is on unrestricted growth. Any ideas?

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• Silverlight 4 MediaElement play sound

  - by NealWalters

  I converted a local sound file to a resource, which built this in my XAML: <UserControl.Resources> <my:Uri x:Key="SoundFiles">file:///c:/Audio/HebrewDemo/Shalom.wav</my:Uri> </UserControl.Resources> I did this by pasting a local disk mp3 filename into source, then clicked on the "dot" by source and chose "Extract Value to Resource". When I run, it tells me that "Uri" is not valid, and sure enough, in the Intellisense, I see other elements that start with "uri" but not just URI by itself. In the real world I want to specify a dynamic mp3 file name. For example, I might have a database of foreign language words used for flashcards, I want to play a sound file on a URL. But I thought I would try to walk before running...

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• Removing offline/defunct files in SQL server 2008

  - by philox

  How to remove traces of files marked as OFFLINE or DEFUNCT in Microsoft SQL server 2008? I have been playing around with a setup where I create a database with 3 file-groups which are: Primary, FileGroupData and FileGroupIndex. The clustered index is using FileGroupData and a non-clustered index is set to use FileGroupIndex. To simulate a disk failure I've shut down SQL server and manually deleted the files in index file-group. To start the database I'll mark the files 'OFFLINE', but after that I can't delete the index files, which are now offline. I don't have backup of the files as they are merely indices, but that has the implication that I can't restore the files and have their status as "ONLINE". How would you recommend removing the files and the file-group as they still show up in management studio under files/file-groups. Management studio is not able to delete them. As far as I can tell this is different from the question posted in : http://stackoverflow.com/questions/462637/how-do-i-remove-offline-files-from-a-sql-server-2005-database /Philip

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• C++ Profiling: KiFastSystemCallRet

  - by John

  I searched for this after seeing it's the top rated item when profiling using Very Sleepy, and it seems everyone gets the answer "it's a system function, ignore it". But Sleepy's hint for the function says: Hint: KiFastSystemCallRet often means the thread was waiting for something else to finish. Possible causes might be disk I/O, waiting for an event, or maybe just calling Sleep(). Now, my app is absolutely thrashing the CPU and so it's a bit weird 33% of the time is spent waiting for something to happen. Do I really just ignore it? EDIT: apparently, 77% of the calls to this come from QueryOglResource (?) which is in module nvd3dnum. I think that might be nvidia Direct3D stuff, i.e rendering.

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• On MacOSX, in a C++ program, what guarantees can I have on file IO

  - by anon

  I am on MacOSX. I am writing a multi threaded program. One thread does logging. The non-logging threads may crash at any time. What conventions should I adopt in the logger / what guarantees can I have? I would prefer a solution where even if I crash during part of a write, previous writes still go to disk, and when reading back the log, I can figure out "ah, I wrote 100 complete enties, then I crashed on the 101th". Thanks!

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• What is the best Battleship AI?

  - by John Gietzen

  Battleship! Back in 2003, (when I was 17,) I competed in a Battleship AI coding competition. Even though I lost that tournament, I had a lot of fun and learned a lot from it. Now, I would like to resurrect this competition, in the search of the best battleship AI. Here is the framework: Battleship.zip The winner will be awarded +450 reputation! The competition will be held starting on the 17th of November, 2009. No entries or edits later than zero-hour on the 17th will be accepted. (Central Standard Time) Submit your entries early, so you don't miss your opportunity! To keep this OBJECTIVE, please follow the spirit of the competition. Rules of the game: The game is be played on a 10x10 grid. Each competitor will place each of 5 ships (of lengths 2, 3, 3, 4, 5) on their grid. No ships may overlap, but they may be adjacent. The competitors then take turns firing single shots at their opponent. A variation on the game allows firing multiple shots per volley, one for each surviving ship. The opponent will notify the competitor if the shot sinks, hits, or misses. Game play ends when all of the ships of any one player are sunk. Rules of the competition: The spirit of the competition is to find the best Battleship algorithm. Anything that is deemed against the spirit of the competition will be grounds for disqualification. Interfering with an opponent is against the spirit of the competition. Multithreading may be used under the following restrictions: No more than one thread may be running while it is not your turn. (Though, any number of threads may be in a "Suspended" state). No thread may run at a priority other than "Normal". Given the above two restrictions, you will be guaranteed at least 3 dedicated CPU cores during your turn. A limit of 1 second of CPU time per game is allotted to each competitor on the primary thread. Running out of time results in losing the current game. Any unhandled exception will result in losing the current game. Network access and disk access is allowed, but you may find the time restrictions fairly prohibitive. However, a few set-up and tear-down methods have been added to alleviate the time strain. Code should be posted on stack overflow as an answer, or, if too large, linked. Max total size (un-compressed) of an entry is 1 MB. Officially, .Net 2.0 / 3.5 is the only framework requirement. Your entry must implement the IBattleshipOpponent interface. Scoring: Best 51 games out of 101 games is the winner of a match. All competitors will play matched against each other, round-robin style. The best half of the competitors will then play a double-elimination tournament to determine the winner. (Smallest power of two that is greater than or equal to half, actually.) I will be using the TournamentApi framework for the tournament. The results will be posted here. If you submit more than one entry, only your best-scoring entry is eligible for the double-elim. Good luck! Have fun! EDIT 1: Thanks to Freed, who has found an error in the Ship.IsValid function. It has been fixed. Please download the updated version of the framework. EDIT 2: Since there has been significant interest in persisting stats to disk and such, I have added a few non-timed set-up and tear-down events that should provide the required functionality. This is a semi-breaking change. That is to say: the interface has been modified to add functions, but no body is required for them. Please download the updated version of the framework. EDIT 3: Bug Fix 1: GameWon and GameLost were only getting called in the case of a time out. Bug Fix 2: If an engine was timing out every game, the competition would never end. Please download the updated version of the framework. EDIT 4: Results!

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• AnkhSVN client side pre-commit hook

  - by santa

  Basically I want to do the same thing as the fella over there. It seems that everybody was thinking about server-side hooks (with all their evil potential). I want a client side script be run before commit so astyle can format the code the way my boss likes to see it. Since my IDE (VS2010Pro) automatically checks when a file changed on the disk an opts me in for reloading it, there is no real evil with all that. Is there any (clean) way to accomplish that with AnkhSVN? Maybe there's also a way to extend VisualStudio to call my pre-commit-script...

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• how mount userdata.img or userdata-qemu.img in osx

  - by misbell

  Disk Utility in OSX easily mounts an SD Card image as a device, but not so the other img files. I want to get the database I just created in the Android Emulator off the drive and into my osx file system. I updated my system with qemu using macports but no combination I try succeeds. Anyone figured out how to do this? Obviously one way I can do this is run the app on my phone than mount the phone as a USB drive. But I don't wanna. I wanna get it off the drive the emulator uses :-) Thanks in advance, folks. Michael

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• Visual Studio 2010 and TFS 2008: Building unit test projects

  - by Peter

  Hi, We are currently taking VS2010 for a testdrive and so far we are a little stumped with how it just won't cooperate with our existing Team Foundation Server 2008. We still have all our projects on .NET 3.5 and whenever we are now building a solution that contains a unit test project (which automatically builds in .NET 4.0) the TFS won't build it. The .NET 4.0 framework is installed on the TFS 2008. The error we're receiving is: [Any CPU/Release] c:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets(0,0): warning MSB3245: Could not resolve this reference. Could not locate the assembly "Microsoft.VisualStudio.QualityTools.UnitTestFramework, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. As a temporary workaround we are now forced to remove all our test projects in order for our solutions to build.

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• UIImagePickerController and extracting EXIF data from existing photos

  - by tomtaylor

  It's well known that UIImagePickerController doesn't return the metadata of the photo after selection. However, a couple of apps in the app store (Mobile Fotos, PixelPipe) seem to be able to read the original files and the EXIF data stored within them, enabling the app to extract the geodata from the selected photo. They seem to do this by reading the original file from the /private/var/mobile/Media/DCIM/100APPLE/ folder and running it through an EXIF library. However, I can't work out a way of matching a photo returned from the UIImagePickerController to a file on disk. I've explored file sizes, but the original file is a JPEG, whilst the returned image is a raw UIImage, making it impossible to know the file size of the image that was selected. I'm considering making a table of hashes and matching against the first x pixels of each image. This seems a bit over the top though, and probably quite slow. Any suggestions?

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