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  • Drawing with GDI+ under IIS

    - by Zac
    I'm running a web application under IIS that we draw graphs with that are sent to the clients. We were previously running under iis6, while migrating to 2008 ( iis7 ) we have encountered some very weird issues with the graphing. I stumbled across the msdn docs for GDI+ stating that "GDI+ functions and classes are not supported for use within a Windows service." I suspect that my issues are probably related to further isolation of services http://msdn.microsoft.com/en-us/library/ms533798%28VS.85%29.aspx My question is how the heck are we supposed to draw graphics? Raw GDI? OpenGL - but doesn't that still require a DC?

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  • SWIG: Throwing exceptions from Python to C++

    - by wheaties
    We've got an interface we've defined in C++ (abstract class, all functions pure virtual) which will be extended in Python. To overcome the cross-language polymorphism issues we're planning on using SWIG directors. I've read how to catch exceptions thrown from C++ code in our Python code here, here, here, and even on SO. It's fairly straight forward and I'm not expecting issues with handling our library's own exceptions. What I'd like to know and can't seem to find in the documentation is how to have our Python implementation of the extended C++ interface throw those C++ exceptions in a way that makes them visible to the C++ code. We could make small functions within the *.i files such that each function throws our exceptions: void throw_myException(){ throw MyException; } but I'm wondering how it will interact with the Python code. Anyone have any experience with throwing C++ exceptions from Python code?

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  • Java environmental variable woes, maven also

    - by Blankman
    So I re-installed java in a directory that doesn't have any spaces in it, as I was having issues with it before. Java JDK is installed in: E:\downloads\java\jdk I created a User variable: JAVA_HOME E:\downloads\java\jdk And my Path looks like: %JAVA_HOME%\bin;%M2%; Now opening a NEW cmd prompt: c:\java 'java' is not recognized... but echoing works: c:\echo %JAVA_HOME% E:\downloads\java\jdk and so does this: c:\%JAVA_HOME%\bin\java -version java version "1.6.0_17" I am trying to get this to work, so I can then get maven to work as maven is having the same type of issues (I created M2_HOME and M2 and none work). What exactly am I doing wrong? I am having the exact same issue on my laptop also, both are running windows 7. I must be missing something!

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  • Embarassing C++ question regarding const

    - by Neil Butterworth
    My comments on this answer got me thinking about the issues of constness and sorting. I played around a bit and reduced my issues to the fact that this code: #include <vector> int main() { std::vector <const int> v; } will not compile - you can't create a vector of const ints. I suppose I should have known this, but I've never needed to create such a thing before. However, it seems like a useful construct to me, and I wonder if there is any way round this problem - I want to add things to a vector (or whatever), but they should not be changed once added. There's probably some embarrassingly simple solution to this, but it's something I'd never considered before.

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  • Elegant ways of displaying a GridView with lots of columns (ASP.NET)

    - by Chris
    Hi, just a general design question that I'd like to hear some of your opinions on. I am designing a system for a client, and I'm using GridView' a lot. They need a lot of columns to be displayed in some of these, and I've had to resort to using a panel with a horizontal scrollbar. This presents some issues - keeping track of which row is which is difficult, even with alternating row colours, and it's generally pretty ugly. How have you dealt with these issues before? Are there any sort of AJAX controls that could help, so some data could be only displayed on hover or such? Or any other general ideas.

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  • Java: Can't implement runnable on a test case: void run() collides

    - by Zombies
    So I have a test case that I want to make into a thread. I cannot extend Thread nor can I implement runnable since TestCase already has a method void run(). The compilation error I am getting is Error(62,17): method run() in class com.util.SeleneseTestCase cannot override method run() in class junit.framework.TestCase with different return type, was class junit.framework.TestResult. What I am trying to do is to scale a Selenium testcase up to perform stress testing. I am not able to use selenium grid/pushtotest.com/amazon cloud at this time (installation issues/install time/resource issues). So this really is more of a Java language issue for me.

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  • PHP string enocding issue - Extra characters appearing

    - by ryan
    I see extra characters like â showing because of encoding issues as I found out here - HTML encoding issues - "Â" character showing up instead of "&nbsp;" I understand that if I set the browser meta encoding to UTF-8, these will not affect anything but I need to strip these extra characters from the database for other purposes. For eg. : Text: ↑ should be become Text: ? But if I run it through utf8_decode it gives me Text: ??? For every other occurrence of the â character, it converts properly to a blank space. Any help will be appreciated.

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  • C - How to manipulate typedef structure pointer?

    - by AbhishekJoshi
    typedef struct { int id; char* first; char* last; }* person; person* people; Hi. How can I use this above, all set globally, to fill people with different "person"s? I am having issues wrapping my head regarding the typedef struct pointer. I am aware pointers are like arrays, but I'm having issues getting this all together... I would like to keep the above code as is as well. Edit 1: char first should be char* first.

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  • We have migrated VB6 code to C# in .net.

    - by VB
    The code was migrated using a third party tool. what ever the tool couldnt do, was done by the .net developers, so that all compile issues were fixed. My question is, for such migration activities, do we not bother running unit tests for the functions. Secondly, Could anyone suggest if we should use some tool in VSTS 10 to create a UML model of this code to minimize risks of issues that the client might find. How cumbersome is it. Are there any other suggestions for how quality migrated code can be delivered, in light of the fact that the functionality of the original VB6 application is unknown to us.

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  • CodePlex Daily Summary for Sunday, November 27, 2011

    CodePlex Daily Summary for Sunday, November 27, 2011Popular ReleasesTerminals: Version 2 - Beta 4 Release: Beta 4 Refresh Build Dont forget to backup your config files BEFORE upgrading! As usual, please take time to use and abuse this release. We left logging in place, and this is a debug build so be sure to submit your logs on each bug reported, and please do report all bugs! Updated the About form to include the date and time of the build. Useful for CI builds to ensure we have the correct version "Favourites" and "History" save their expanded states after app restarts Code cleanup, secu...MiniTwitter: 1.76: MiniTwitter 1.76 ???? ?? ?????????? User Streams ???????????? User Streams ???????????、??????????????? REST ?????????? ?????????????????????????????? ??????????????????????????????Media Companion: MC 3.424b Weekly: Ensure .NET 4.0 Full Framework is installed. (Available from http://www.microsoft.com/download/en/details.aspx?id=17718) Ensure the NFO ID fix is applied when transitioning from versions prior to 3.416b. (Details here) Movie Show Resolutions... Resolved issue when reverting multiselection of movies to "-none-" Added movie rename support for subtitle files '.srt' & '.sub' Finalised code for '-1' fix - radiobutton to choose either filename or title Fixed issue with Movie Batch Wizard Fanart - ...Advanced Windows Phone Enginering Tool: WPE Downloads: This version of WPE gives you basic updating, restoring, and, erasing for your Windows Phone device.Anno 2070 Assistant: Beta v1.0 (STABLE): Anno 2070 Assistant Beta v1.0 Released! Features Included: Complete Building Layouts for Ecos, Tycoons & Techs Complete Production Chains for Ecos, Tycoons & Techs Completed Credits Screen Known Issues: Not all production chains and building layouts may be on the lists because they have not yet been discovered. However, data is still 99.9% complete. Currently the Supply & Demand, including Calculator screen are disabled until version 1.1.Minemapper: Minemapper v0.1.7: Including updated Minecraft Biome Extractor and mcmap to support the new Minecraft 1.0.0 release (new block types, etc).Visual Leak Detector for Visual C++ 2008/2010: v2.2.1: Enhancements: * strdup and _wcsdup functions support added. * Preliminary support for VS 11 added. Bugs Fixed: * Low performance after upgrading from VLD v2.1. * Memory leaks with static linking fixed (disabled calloc support). * Runtime error R6002 fixed because of wrong memory dump format. * version.h fixed in installer. * Some PVS studio warning fixed.NetSqlAzMan - .NET SQL Authorization Manager: 3.6.0.10: 3.6.0.10 22-Nov-2011 Update: Removed PreEmptive Platform integration (PreEmptive analytics) Removed all PreEmptive attributes Removed PreEmptive.dll assembly references from all projects Added first support to ADAM/AD LDS Thanks to PatBea. Work Item 9775: http://netsqlazman.codeplex.com/workitem/9775VideoLan DotNet for WinForm, WPF & Silverlight 5: VideoLan DotNet for WinForm, WPF, SL5 - 2011.11.22: The new version contains Silverlight 5 library: Vlc.DotNet.Silverlight. A sample could be tested here The new version add and correct many features : Correction : Reinitialize some variables Deprecate : Logging API, since VLC 1.2 (08/20/2011) Add subitem in LocationMedia (for Youtube videos, ...) Update Wpf sample to use Youtube videos Many others correctionsEZ-NFC: Alpha 1: THIS IS AN ALPHA RELEASE. STILL UNSTABLE AND SUBJECT TO ARCHITECTURE CHANGE What is implemented (In alpha) : ACR122L Device Mifare 1K tag Windows frontend#liveDB: liveDB 0.3.2: New featuresNew abstract storage scheme enabling future cloud support New file system structure and naming scheme for snapshots and journal files based on sequence numbers Journal files are never deleted Automatic snapshots during load or shutdown Renamed/added hooks to Model JournalRestored, SnapshotRestored Created an extensible logging facade Journal gets split into 1MB segments (configurable) Integrity checks before during load/create Commands are cloned by default before ...ReactiveMVVM: ReactiveMVVM v1.0: Example 1 property change: public class Example1 : ViewModelBase{ string _Userid; /// <summary> /// person infomation of owner. /// </summary> public string Userid { get { return _Userid; } set { this.RaiseAndSetIfChanged(x => x.Userid, ref _Userid, value, *true*); } // true, broadcast property change message. } //if the property changed to do...... this.ObservableProperty(x => x.Useid) ...IoCWrap: Initial: Initial release of the source code.Code for Rapid C# Windows Development eBook + LINQPad and Data Tools: LinqPad Custom Visualizer Version 1.0: First release of my LinqPad Custom Visualizer. It is compiled against the Any-CPU build of LINQPad v4.36.6 so it can only be used with the LINQPad Beta: v4.36.x. To install unzip to the LinqPad plugins folder.Distributed replay GUI: Distributed Replay Snapin: This is the dll for registering the snapin in mmc.FaST-LMM: FActored Spectrally Transformed Linear Mixed Models: FaSTLMM v1.03 Binaries for Windows and Linux: These files contain the files necessary to run FaSTLMM on Windows or Linux along with the license and users manual. To download FaSTLMM source code, please follow the changeset link located above to the Source Code tab. The FaSTLMM.Win.zip download contains both C++ and CSharp executable versions of FaSTLMM. No installer is required, just UnZip the file into a directory and run from there. Or put the installation directory on your path and run it from anywhere. The C++ version included r...SharePoint 2010 FBA Pack: SharePoint 2010 FBA Pack 1.2.0: Web parts are now fully customizable via html templates (Issue #323) FBA Pack is now completely localizable using resource files. Thank you David Chen for submitting the code as well as Chinese translations of the FBA Pack! The membership request web part now gives the option of having the user enter the password and removing the captcha (Issue # 447) The FBA Pack will now work in a zone that does not have FBA enabled (Another zone must have FBA enabled, and the zone must contain the me...SharePoint 2010 Education Demo Project: Release SharePoint SP1 for Education Solutions: This release includes updates to the Content Packs for SharePoint SP1. All Content Packs have been updated to install successfully under SharePoint SP1SQL Monitor - managing sql server performance: SQLMon 4.1 alpha 6: 1. improved support for schema 2. added find reference when right click on object list 3. added object rename supportBugNET Issue Tracker: BugNET 0.9.126: First stable release of version 0.9. Upgrades from 0.8 are fully supported and upgrades to future releases will also be supported. This release is now compiled against the .NET 4.0 framework and is a requirement. Because of this the web.config has significantly changed. After upgrading, you will need to configure the authentication settings for user registration and anonymous access again. Please see our installation / upgrade instructions for more details: http://wiki.bugnetproject.c...New Projectsandrewtatham.robocode: Andrew Tatham's Robocode botsClear SharePoint Lists: This project contains the tools used to clear the items from the one or more Lists.Clipboard Editor: How many times have you pasted something in Notepad and then copied the plain text again? We do it all the time to strip formatting from the clipboard. This utility lets you pick which format from the clipboard to keep.CS New Rus: ?? ????? ??????????? ??????. ??? ??? - CS New. ?? ???? ????? ?? ????? ??????????? ??? ? ?????????? ? ???????. ElfDoc: ElfDoc enables you to create word documents from templates, using open xml.HTC RUU .NET: HTC's legendary RUU goes .NET and Open Source.................. You can browse for .nbh file, not locked at current directory and, you can update your device's rom in .NET wayMobileGamePrototype: For now just a skeleton of the architecture.NopCommerce 23 Multi Store Support: NopCommerce 23 Multi Store Support novel: fetch novelOrchard Custom Shapes: Ready to use custom orchard shapes like a table shape.Philosophy Gadget: This gadget helps people associate known works of philosophy with their known authors.ReefTracker: A controller agnostic logging and reporting application for reef aquarium controllers. SQLQuery: SQL QueryWindows Phone Marketplace Viewer: Windows Phone Marketplace Viewer is a single aspx page for asp.net 3+ with no additional dependencies. It will show the top 2000 apps in one of the 3 categories: paid and free together, only paid or only free, for all the marketplace languages.

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  • Teamviewer: cannot control monitor 1, but can control monitor 2

    - by DaveT
    I'm using the web client of Teamviewer from my work computer trying to control my home computer. I have 2 monitors on the remote desktop, but for some reason only have control on the second monitor. When I switch to the main monitor (monitor 1), I cannot do anything and cannot even move the cursor. But I have no issues when I switch over to the second monitor (monitor 2). I used to have no issues with either, but in the past couple of months this has been causing me issues. Anyone have a suggestion? Thanks!! Also... Here is the log from the Teamviewer session. Showing me switching back and forth between the monitors. (just in case this will help). I had to remove the links in order to post the log since I don't have enough reputation points, but they were just teamviewer login weblinks. =============================================================================== 21.08 16:00:41,176: Version: 9.0.15099 21.08 16:00:41,177: Sandbox: remote 21.08 16:00:41,177: SysLanguage: en 21.08 16:00:41,177: VarLanguage: en 21.08 16:00:41,177: Flash Player: PlugIn (WIN 14,0,0,179) 21.08 16:00:41,178: UseLanguage: en 21.08 16:00:41,178: UseLanguage: en 21.08 16:00:41,182: TeamViewer hasPassword: true 21.08 16:00:41,418: ExternalConnect id=910035824 21.08 16:00:41,419: CT connect 910035824 masterURL: , sandbox = remote 21.08 16:00:41,425: MC.requestRoute(910035824) 21.08 16:00:41,426: MC.sendMasterCommand text=F=RequestRoute2&ID1=777&Client=TV& ID2=910035824&SA_AccountID=26641022&SA_PasswordMD5HashBase64Encoded=& SA_SessionSecret=f7H6Z7SYfX5ahQ7SJq/r/K20PBYg9fOZhp+DKLhf5ts=&SA_SessionID=1558929948& V=9.0.15099&OS=Flash 21.08 16:00:41,426: MC wait for ping completion 21.08 16:00:42,064: PS.socket event: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:42,182: PingThread: TCP-Ping ok 21.08 16:00:42,183: MC.socket mode = TCP, MasterURL: 21.08 16:00:42,183: MC.connect: 21.08 16:00:43,058: PS.socket event: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:43,058: MC.connectHandler: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:43,236: MC.requestRouteResponse: [email protected]_10800_128000_762319420_910035824_10000__1_0_16778176_128000_16778176: 128000;2147483647:1280000;4:640000_786297_786297 21.08 16:00:43,239: CT init socket: TCP 21.08 16:00:43,513: PS.socket event: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:43,514: CT.connectHandler: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:43,519: Browser name: Netscape 21.08 16:00:43,936: CMD_IDENTIFY id=910035824 ver=2.41 21.08 16:00:44,666: CMD_CONFIRMENCRYPTION: encryption confirmed 21.08 16:00:44,667: Started resendrequest timer 21.08 16:00:45,063: Remote Version: TV 009.000 21.08 16:00:45,501: start classic authentication 21.08 16:00:45,502: Login::SendRequestToConsole(): url= 21.08 16:00:45,828: start srp authentication 21.08 16:00:46,983: checkFirstPacket ok, m_LastReceivedPacketID =4 21.08 16:00:47,148: Login::SendRequestToConsole(): url= 21.08 16:00:47,478: start srp authentication 21.08 16:00:48,210: Login::SendRequestToConsole(): url= 21.08 16:00:48,485: checkFirstPacket ok, m_LastReceivedPacketID =7 21.08 16:00:48,780: TVCmdAuthenticate_Authenticated: 1 21.08 16:00:49,321: Connected to 910035824, name=NEWMAN, os=14, version=9.0.31064 21.08 16:00:49,329: ConnectionAccessSettings: RemoteControl: AllowedFileTransfer: AllowedControlRemoteTV: AllowedSwitchSides: DeniedAllowDisableRemoteInput: AllowedAllowVPN: AllowedAllowPartnerViewDesktop: Allowed 21.08 16:00:52,195: unexpected TVCommand.CommandType == 56 21.08 16:00:52,231: CW received display params: 1680x1050x8 monitors: 2 (active:0) 21.08 16:00:52,301: Caching active, version=2 21.08 16:03:47,158: CW received display params: 1680x1050x8 monitors: 2 (active:1) 21.08 16:04:24,447: CW received display params: 1680x1050x8 monitors: 2 (active:0) 21.08 16:04:40,609: CW received display params: 3360x1050x8 monitors: 2 (active:-1) 21.08 16:04:59,802: CW received display params: 1680x1050x8 monitors: 2 (active:1) 21.08 16:04:59,933: CW received display params: 1680x1050x8 monitors: 2 (active:1) 21.08 16:05:58,419: CW received display params: 1680x1050x8 monitors: 2 (active:0) 21.08 16:06:36,824: CW received display params: 1680x1050x8 monitors: 2 (active:1) 21.08 16:07:07,232: CW received display params: 1680x1050x8 monitors: 2 (active:0)

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  • apache+mod_wsgi configuration for django project(s) on a quad core

    - by Stefano
    I've been experiment quite some time with a "typical" django setting upon nginx+apache2+mod_wsgi+memcached(+postgresql) (reading the doc and some questions on SO and SF, see comments) Since I'm still unsatisfied with the behavior (definitely because of some bad misconfiguration on my part) I would like to know what a good configuration would look like with these hypotesis: Quad-Core Xeon 2.8GHz 8 gigs memory several django projects (anything special related to this?) These are excerpts form my current confs: apache2 SetEnv VHOST null #WSGIPythonOptimize 2 <VirtualHost *:8082> ServerName subdomain.domain.com ServerAlias www.domain.com SetEnv VHOST subdomain.domain AddDefaultCharset UTF-8 ServerSignature Off LogFormat "%{X-Real-IP}i %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\"" custom ErrorLog /home/project1/var/logs/apache_error.log CustomLog /home/project1/var/logs/apache_access.log custom AllowEncodedSlashes On WSGIDaemonProcess subdomain.domain user=www-data group=www-data threads=25 WSGIScriptAlias / /home/project1/project/wsgi.py WSGIProcessGroup %{ENV:VHOST} </VirtualHost> wsgi.py import os import sys # setting all the right paths.... _realpath = os.path.realpath(os.path.dirname(__file__)) _public_html = os.path.normpath(os.path.join(_realpath, '../')) sys.path.append(_realpath) sys.path.append(os.path.normpath(os.path.join(_realpath, 'apps'))) sys.path.append(os.path.normpath(_public_html)) sys.path.append(os.path.normpath(os.path.join(_public_html, 'libs'))) sys.path.append(os.path.normpath(os.path.join(_public_html, 'django'))) os.environ['DJANGO_SETTINGS_MODULE'] = 'settings' import django.core.handlers.wsgi _application = django.core.handlers.wsgi.WSGIHandler() def application(environ, start_response): """ Launches django passing over some environment (domain name) settings """ application_group = environ['mod_wsgi.application_group'] """ wsgi application group is required. It's also used to generate the HOST.DOMAIN.TLD:PORT parameters to pass over """ assert application_group fields = application_group.replace('|', '').split(':') server_name = fields[0] os.environ['WSGI_APPLICATION_GROUP'] = application_group os.environ['WSGI_SERVER_NAME'] = server_name if len(fields) > 1 : os.environ['WSGI_PORT'] = fields[1] splitted = server_name.rsplit('.', 2) assert splitted >= 2 splited.reverse() if len(splitted) > 0 : os.environ['WSGI_TLD'] = splitted[0] if len(splitted) > 1 : os.environ['WSGI_DOMAIN'] = splitted[1] if len(splitted) > 2 : os.environ['WSGI_HOST'] = splitted[2] return _application(environ, start_response)` folder structure in case it matters (slightly shortened actually) /home/www-data/projectN/var/logs /project (contains manage.py, wsgi.py, settings.py) /project/apps (all the project ups are here) /django /libs Please forgive me in advance if I overlooked something obvious. My main question is about the apache2 wsgi settings. Are those fine? Is 25 threads an /ok/ number with a quad core for one only django project? Is it still ok with several django projects on different virtual hosts? Should I specify 'process'? Any other directive which I should add? Is there anything really bad in the wsgi.py file? I've been reading about potential issues with the standard wsgi.py file, should I switch to that? Or.. should this conf just be running fine, and I should look for issues somewhere else? So, what do I mean by "unsatisfied": well, I often get quite high CPU WAIT; but what is worse, is that relatively often apache2 gets stuck. It just does not answer anymore, and has to be restarted. I have setup a monit to take care of that, but it ain't a real solution. I have been wondering if it's an issue with the database access (postgresql) under heavy load, but even if it was, why would the apache2 processes get stuck? Beside these two issues, performance is overall great. I even tried New Relic and got very good average results.

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  • Unable to make the session state request to the session state server

    - by Angry_IT_Guru
    For about 4-5 months now, I seem to be having this sporadic issue--mainly during our busiest time of the day between 10:30-11:45AM, where all my Windows 2003 web servers in a Microsoft NLB cluster start throwing session state server errors. A sample error is below. System.Web.HttpException: Unable to make the session state request to the session state server. Please ensure that the ASP.NET State service is started and that the client and server ports are the same. If the server is on a remote machine, please ensure that it accepts remote requests by checking the value of HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aspnet_state\Parameters\AllowRemoteConnection. If the server is on the local machine, and if the before mentioned registry value does not exist or is set to 0, then the state server connection string must use either 'localhost' or '127.0.0.1' as the server name. at System.Web.SessionState.OutOfProcSessionStateStore.MakeRequest(StateProtocolVerb verb, String id, StateProtocolExclusive exclusiveAccess, Int32 extraFlags, Int32 timeout, Int32 lockCookie, Byte[] buf, Int32 cb, Int32 networkTimeout, SessionNDMakeRequestResults& results) at System.Web.SessionState.OutOfProcSessionStateStore.SetAndReleaseItemExclusive(HttpContext context, String id, SessionStateStoreData item, Object lockId, Boolean newItem) at System.Web.SessionState.SessionStateModule.OnReleaseState(Object source, EventArgs eventArgs) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) Now I'm using ASP.NET State service on a centralized back-end Windows 2003 server that all servers communicate to. I was originally using SQL Server state for a couple years as well prior to having this issue. The problem with SQL wqas that when the issue occurred, it created a blocking situation which essentially impacted all users across all servers. The product company recommended that I use the standard ASP.NET State service as that was what they technically supported. Why this would make a difference is beyond me -- but I had no choice but to try it! I have attempted to create multiple application pools, adding additional servers, chaning TCP/IP timeout from 20 to 30 seconds, and even calling Microsoft ASP.NET product support, with very little success. I even recommended that they review whether they are using read-only session state instead of read/write per page request -- as I understand that this basically causes every page to make round-trips to state server even if state isn't being used on the page. Unfortunately, the application is developed by our product company and they insist that it is something with my environment because other clients do not have these sort of issues. However, I've talked to other clients and they tell me when they've seen issues like they, they've basically had to create another web farm. This issue almost seems like I've simply reached some architectural limit within the application... Microsoft's position on the issue is that the session state needs to be reduced and the returncode being reported back from the state server indicates buffers are full. To better understand the scope of issues (rather than wait for customers to call and complain), I installed ELMAH and configured it to send me e-mails when unhandled exceptions occur. I basically get 500-1000 e-mails during the time period of high activity! If any one has any other ideas I could try or better ways to troubleshoot, I'd appreciate it.

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  • Windows Server 2012 Migration (DNS/AD DS Standard Eval to Essentials OEM) P2V -> Do I need a Secondary Domain Controller during migration?

    - by Aubrey Robertson
    This is my first post on this exchange (although not my first on stack exchange), so please have patience. I am a 3rd year student intern, and I have been tasked with virtualizing the server systems at the company I work for. I have come a long way, and I am almost ready to install the VM Server in migration mode. Here is some information: Source Server: Windows Server 2012 Standard Evaluation DNS Server (local only) Advanced Directory Domain Services File and Storage stuff A few other server roles Destination Server: Windows Server 2012 Essentials OEM (Hyper-V client) Running under a temporary Hyper-V host (will migrate the Hyper-V host back to the old machine after the original server is virtualized as a client). Sitting currently at the "Select Installation Mode" screen. I have been following the guides on Microsoft tech net, and today I spent most of the day getting rid of issues in the Best Practices Analyser on the source machine. I have 3 remaining issues (which are all related): ERROR: DNS: DNS servers on Ethernet (adapter name) should include the loopback address, but not as the first entry (flavour text indicates that, during migration, the DNS server may not be found) WARNING: All domains should have at least two domain controllers for redundancy. WARNING: DNS: Ethernet should be configured to use both a preferred and an alternate DNS Server. All of these issues can be resolved by deploying a secondary domain controller, but I have never done that before (see my concerns below). The main issue here that I am concerned with for installing in migration mode is the FIRST one (the error). If I try and set-up the new server deployment, and the adapter domain controller is listed as localhost, then this may cause the installation to fail. (at least, this is what the Microsoft documentation suggests). But I do not have another IP address to enter here as I have no other local domain controllers. So I did the first obvious thing that came to my mind, and tried to use Google DNS servers as my alternates. That did not work because they couldn't recognize other computers in the "forest". Now I'm no expert when it comes to DNS, so please forgive my ignorance. This DNS server is concerned only with Active Directory stuffs for the local network. If I go ahead with migration, and it fails, then I will just have to go ahead and install a secondary DNS server I suppose. The problem I have here is that I am limited by the amount of Windows Server keys I have available (I have 2); however, I do have access to a Linux box running Debian Wheezy that I set-up two weeks ago as a Mantis server. I could install Windows Server 2012 as a secondary DNS (I think) in a VM and use that, but then it seems like I will be wasting time, and probably the Windows key too, and if there's another way to do it with Linux that would be much better. Even better still, do I even need a secondary DNS server for migration at all? The hints said that during migration the original machine "might" not be found. Thank you for your time and consideration.

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  • Server Cabinet/Room Cooling

    - by user37226
    Hello all. I currently have two desktops and three servers in my office sitting on the floor (I know this is bad). With that many servers the ambient temperature in the room goes up quickly. I am located in Dallas, TX so during the winter, if the heat is kept low, it is not a problem, but during the summer it easily jumps the room +10 degrees. I have decided and found a free 42U server cabinet that a hosting company was throwing away to house all of these systems in. One server is in a rack mount case while the other four servers are housed in mid-tower cases. I have purchased shelves for each computer and plan to lay the towers side ways on these shelves (as replacing the cases costs a heck of a lot of money). I like the idea of housing all of these systems in the cabinet because it will save a lot of room and clean up all of the cabling currently laying all over the office floor. When putting this setup together over the next couple of weeks, I want to address issues with dust and cooling. The server cabinet has a fan on top, front plexiglass door and a rear metal door with vent wholes on the bottom. First the cooling issues. I know I am going to want to have cool air enter the bottom of the cabinet and exit the top. I do not want the room heating up though as this will make my work area hot and then make the servers warmer as the air eventually reenters the cabinet. I had an idea to fix this problem, but am unsure if it will work. I was thinking of taking flexible piping and adapting it to the back fans of the computer having the other end of the pipe at the top close to the cabinet's top mounted fan. I was then thinking of creating a duct around the top fan into the attic. Now I am very concerned that the attic will cause issues with this type of setup because during July/August time frame, the attic is easily 120 degrees F. I could also use the flexible pipe to take it to an attic exhaust vent if it would be better to vent it into the 100 degree air outside (at least there may be wind. The other option would be to buy a small portable air conditioner. This may be a possibility, but do I want to spend the extra money on power? I bet this increases the noise. Plus they are around $250 on Amazon. What would you all recommend? Depending on the solution I end up running with above, I would also like to limit the dust that gets into the cabinet. If I were to cut a whole and mount a second cabinet fan on the bottom of the rear door, could I possibly mount a standard home air filter on the other side of that whole? Thanks in advance for your recommendations. I look forward to reading your interesting ideas.

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  • Server Cabinet/Room Cooling

    - by user37226
    Hello all. I currently have two desktops and three servers in my office sitting on the floor (I know this is bad). With that many servers the ambient temperature in the room goes up quickly. I am located in Dallas, TX so during the winter, if the heat is kept low, it is not a problem, but during the summer it easily jumps the room +10 degrees. I have decided and found a free 42U server cabinet that a hosting company was throwing away to house all of these systems in. One server is in a rack mount case while the other four servers are housed in mid-tower cases. I have purchased shelves for each computer and plan to lay the towers side ways on these shelves (as replacing the cases costs a heck of a lot of money). I like the idea of housing all of these systems in the cabinet because it will save a lot of room and clean up all of the cabling currently laying all over the office floor. When putting this setup together over the next couple of weeks, I want to address issues with dust and cooling. The server cabinet has a fan on top, front plexiglass door and a rear metal door with vent wholes on the bottom. First the cooling issues. I know I am going to want to have cool air enter the bottom of the cabinet and exit the top. I do not want the room heating up though as this will make my work area hot and then make the servers warmer as the air eventually reenters the cabinet. I had an idea to fix this problem, but am unsure if it will work. I was thinking of taking flexible piping and adapting it to the back fans of the computer having the other end of the pipe at the top close to the cabinet's top mounted fan. I was then thinking of creating a duct around the top fan into the attic. Now I am very concerned that the attic will cause issues with this type of setup because during July/August time frame, the attic is easily 120 degrees F. I could also use the flexible pipe to take it to an attic exhaust vent if it would be better to vent it into the 100 degree air outside (at least there may be wind. The other option would be to buy a small portable air conditioner. This may be a possibility, but do I want to spend the extra money on power? I bet this increases the noise. Plus they are around $250 on Amazon. What would you all recommend? Depending on the solution I end up running with above, I would also like to limit the dust that gets into the cabinet. If I were to cut a whole and mount a second cabinet fan on the bottom of the rear door, could I possibly mount a standard home air filter on the other side of that whole? Thanks in advance for your recommendations. I look forward to reading your interesting ideas.

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  • Unable to make the session state request to the session state server.

    - by Angry_IT_Guru
    For about 4-5 months now, I seem to be having this sporadic issue--mainly during our busiest time of the day between 10:30-11:45AM, where all my Windows 2003 web servers in a Microsoft NLB cluster start throwing session state server errors. A sample error is below. System.Web.HttpException: Unable to make the session state request to the session state server. Please ensure that the ASP.NET State service is started and that the client and server ports are the same. If the server is on a remote machine, please ensure that it accepts remote requests by checking the value of HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aspnet_state\Parameters\AllowRemoteConnection. If the server is on the local machine, and if the before mentioned registry value does not exist or is set to 0, then the state server connection string must use either 'localhost' or '127.0.0.1' as the server name. at System.Web.SessionState.OutOfProcSessionStateStore.MakeRequest(StateProtocolVerb verb, String id, StateProtocolExclusive exclusiveAccess, Int32 extraFlags, Int32 timeout, Int32 lockCookie, Byte[] buf, Int32 cb, Int32 networkTimeout, SessionNDMakeRequestResults& results) at System.Web.SessionState.OutOfProcSessionStateStore.SetAndReleaseItemExclusive(HttpContext context, String id, SessionStateStoreData item, Object lockId, Boolean newItem) at System.Web.SessionState.SessionStateModule.OnReleaseState(Object source, EventArgs eventArgs) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) Now I'm using ASP.NET State service on a centralized back-end Windows 2003 server that all servers communicate to. I was originally using SQL Server state for a couple years as well prior to having this issue. The problem with SQL wqas that when the issue occurred, it created a blocking situation which essentially impacted all users across all servers. The product company recommended that I use the standard ASP.NET State service as that was what they technically supported. Why this would make a difference is beyond me -- but I had no choice but to try it! I have attempted to create multiple application pools, adding additional servers, chaning TCP/IP timeout from 20 to 30 seconds, and even calling Microsoft ASP.NET product support, with very little success. I even recommended that they review whether they are using read-only session state instead of read/write per page request -- as I understand that this basically causes every page to make round-trips to state server even if state isn't being used on the page. Unfortunately, the application is developed by our product company and they insist that it is something with my environment because other clients do not have these sort of issues. However, I've talked to other clients and they tell me when they've seen issues like they, they've basically had to create another web farm. This issue almost seems like I've simply reached some architectural limit within the application... Microsoft's position on the issue is that the session state needs to be reduced and the returncode being reported back from the state server indicates buffers are full. To better understand the scope of issues (rather than wait for customers to call and complain), I installed ELMAH and configured it to send me e-mails when unhandled exceptions occur. I basically get 500-1000 e-mails during the time period of high activity! If any one has any other ideas I could try or better ways to troubleshoot, I'd appreciate it.

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  • Multi-tenant ASP.NET MVC – Introduction

    - by zowens
    I’ve read a few different blogs that talk about multi-tenancy and how to resolve some of the issues surrounding multi-tenancy. What I’ve come to realize is that these implementations overcomplicate the issues and give only a muddy implementation! I’ve seen some really illogical code out there. I have recently been building a multi-tenancy framework for internal use at eagleenvision.net. Through this process, I’ve realized a few different techniques to make building multi-tenant applications actually quite easy. I will be posting a few different entries over the issue and my personal implementation. In this first post, I will discuss what multi-tenancy means and how my implementation will be structured.   So what’s the problem? Here’s the deal. Multi-tenancy is basically a technique of code-reuse of web application code. A multi-tenant application is an application that runs a single instance for multiple clients. Here the “client” is different URL bindings on IIS using ASP.NET MVC. The problem with different instances of the, essentially, same application is that you have to spin up different instances of ASP.NET. As the number of running instances of ASP.NET grows, so does the memory footprint of IIS. Stack Exchange shifted its architecture to multi-tenancy March. As the blog post explains, multi-tenancy saves cost in terms of memory utilization and physical disc storage. If you use the same code base for many applications, multi-tenancy just makes sense. You’ll reduce the amount of work it takes to synchronize the site implementations and you’ll thank your lucky stars later for choosing to use one application for multiple sites. Multi-tenancy allows the freedom of extensibility while relying on some pre-built code.   You’d think this would be simple. I have actually seen a real lack of reference material on the subject in terms of ASP.NET MVC. This is somewhat surprising given the number of users of ASP.NET MVC. However, I will certainly fill the void ;). Implementing a multi-tenant application takes a little thinking. It’s not straight-forward because the possibilities of implementation are endless. I have yet to see a great implementation of a multi-tenant MVC application. The only one that comes close to what I have in mind is Rob Ashton’s implementation (all the entries are listed on this page). There’s some really nasty code in there… something I’d really like to avoid. He has also written a library (MvcEx) that attempts to aid multi-tenant development. This code is even worse, in my honest opinion. Once I start seeing Reflection.Emit, I have to assume the worst :) In all seriousness, if his implementation makes sense to you, use it! It’s a fine implementation that should be given a look. At least look at the code. I will reference MvcEx going forward as a comparison to my implementation. I will explain why my approach differs from MvcEx and how it is better or worse (hopefully better).   Core Goals of my Multi-Tenant Implementation The first, and foremost, goal is to use Inversion of Control containers to my advantage. As you will see throughout this series, I pass around containers quite frequently and rely on their use heavily. I will be using StructureMap in my implementation. However, you could probably use your favorite IoC tool instead. <RANT> However, please don’t be stupid and abstract your IoC tool. Each IoC is powerful and by abstracting the capabilities, you’re doing yourself a real disservice. Who in the world swaps out IoC tools…? No one!</RANT> (It had to be said.) I will outline some of the goodness of StructureMap as we go along. This is really an invaluable tool in my tool belt and simple to use in my multi-tenant implementation. The second core goal is to represent a tenant as easily as possible. Just as a dependency container will be a first-class citizen, so will a tenant. This allows us to easily extend and use tenants. This will also allow different ways of “plugging in” tenants into your application. In my implementation, there will be a single dependency container for a single tenant. This will enable isolation of the dependencies of the tenant. The third goal is to use composition as a means to delegate “core” functions out to the tenant. More on this later.   Features In MvcExt, “Modules” are a code element of the infrastructure. I have simplified this concept and have named this “Features”. A feature is a simple element of an application. Controllers can be specified to have a feature and actions can have “sub features”. Each tenant can select features it needs and the other features will be hidden to the tenant’s users. My implementation doesn’t require something to be a feature. A controller can be common to all tenants. For example, (as you will see) I have a “Content” controller that will return the CSS, Javascript and Images for a tenant. This is common logic to all tenants and shouldn’t be hidden or considered a “feature”; Content is a core component.   Up next My next post will be all about the code. I will reveal some of the foundation to the way I do multi-tenancy. I will have posts dedicated to Foundation, Controllers, Views, Caching, Content and how to setup the tenants. Each post will be in-depth about the issues and implementation details, while adhering to my core goals outlined in this post. As always, comment with questions of DM me on twitter or send me an email.

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  • SQLAuthority News – Interview with SQL Server MVP Madhivanan – A Real Problem Solver

    - by pinaldave
    Madhivanan (SQL Server MVP) is a real community hero. He is known for his two skills – 1) Help Community and 2) Help Community. I have met him many times and every time I feel if anybody in online world needs help Madhinvanan does his best to reach them out and solve problem. His name is not new if you are ready this blog or have ever asked a question in any online SQL forum. He is always there to help. When Madhivanan has time he even helps people on this blog as well. He spends his valuable time to help community only. He recently crossed over 1000 helpful comments on this blog. On that occasion, I have interviewed him to find out if he has any life outside SQL. Q 1. Tell us something about your self. I am Madhivanan ,an MSc computer Science graduate from Chennai, India and working as a Lead Analyst-Project at Ellaar Infotek Solutions Private Limited. I am basically a developer started with Visual Basic 6.0, SQL Server 2000 and Crystal Report 8. As years go on I started working more on writing queries in SQL Server in most of the projects developed in my company. I have some good level of knowledge in ORACLE, MySQL and PostgreSQL as well. Now I am leading a project develeoped in Windows Azure. Q 2. What motivates you to help people on community and forums. When I got some errors during the application development in my early days of my career, I got good solutions from online forums and weblogs. So I decided to help others if possible. When I visit forums and help people if I know the answer to the questions. I am one of the leading posters at www.sqlteam.com and also a moderator at www.sql-server-performance.com. I also take part in Visual Basic and Crystal Reports forums. I have been SQL Server MVP since 2007. Q 3. Your personal life is not much known. Tell us something about your personal life. I am happily married person. My wife is a B.Pharm graduate. I have a son who is now 18 months old. Q 4. Where can we read further for your community activity. I have a blog at http://beyondrelational.com/blogs/madhivanan where you can find most of my T-sql stuffs Q 5. When not working with SQL what do you do? When not working with SQL, I spend time playing with my son, reading some magazines and watching TV. Madhivanan for your work and help to community, a true salute to you. Hats off my friend. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: MVP, Readers Contribution, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • Month in Geek: December 2010 Edition

    - by Asian Angel
    As 2010 draws to a close, we have gathered together another great batch of article goodness for your reading enjoyment. Here are our ten hottest articles for December. Note: Articles are listed as #10 through #1. The 50 Best How-To Geek Windows Articles of 2010 Even though we cover plenty of other topics, Windows has always been a primary focus around here, and we’ve got one of the largest collections of Windows-related how-to articles anywhere. Here’s the fifty best Windows articles that we wrote in 2010. Read the article Desktop Fun: Happy New Year Wallpaper Collection [Bonus Edition] As this year draws to a close, it is a time to reflect back on what we have done this year and to look forward to the new one. To help commemorate the event we have put together a bonus size edition of Happy New Year wallpapers for your desktops. Read the article LCD? LED? Plasma? The How-To Geek Guide to HDTV Technology With image technology progressing faster than ever, High-Def has become the standard, giving TV buyers more options at cheaper prices. But what’s different in all these confusing TVs, and what should you know before buying one? Read the article HTG Explains: Which Linux File System Should You Choose? File systems are one of the layers beneath your operating system that you don’t think about—unless you’re faced with the plethora of options in Linux. Here’s how to make an educated decision on which file system to use. Read the article Desktop Fun: Merry Christmas Fonts Christmas will soon be here and there are lots of cards, invitations, gift tags, photos, and more to prepare beforehand. To help you get ready we have gathered together a great collection of fun holiday fonts to help turn those ordinary looking holiday items into extraordinary looking ones. Read the article Microsoft Security Essentials 2.0 Kills Viruses Dead. Download It Now. Microsoft’s Security Essentials has been our favorite anti-malware application for a while—it’s free, unobtrusive, and it doesn’t slow your PC down, but now it’s even better with the new 2.0 release, which adds network filtering, heuristic protection, and more. Read the article 20 OS X Keyboard Shortcuts You Might Not Know Mastering the keyboard will not only increase your navigation speed but it can also help with wrist fatigue. Here are some lesser known OS X shortcuts to help you become a keyboard ninja. Read the article 20 Windows Keyboard Shortcuts You Might Not Know Mastering the keyboard will not only increase your navigation speed but it can also help with wrist fatigue. Here are some lesser known Windows shortcuts to help you become a keyboard ninja. Read the article The 50 Best Registry Hacks that Make Windows Better We’re big fans of hacking the Windows Registry around here, and we’ve got one of the biggest collections of registry hacks you’ll find. Don’t believe us? Here’s a list of the top 50 registry hacks that we’ve covered. Read the article The Complete List of iPad Tips, Tricks, and Tutorials The Apple iPad is an amazing tablet, and to help you get the most out of it, we’ve put together a comprehensive list of every tip, trick, and tutorial for you. Read on for more. Read the article Latest Features How-To Geek ETC The 20 Best How-To Geek Linux Articles of 2010 The 50 Best How-To Geek Windows Articles of 2010 The 20 Best How-To Geek Explainer Topics for 2010 How to Disable Caps Lock Key in Windows 7 or Vista How to Use the Avira Rescue CD to Clean Your Infected PC The Complete List of iPad Tips, Tricks, and Tutorials Tune Pop Enhances Android Music Notifications Another Busy Night in Gotham City Wallpaper Classic Super Mario Brothers Theme for Chrome and Iron Experimental Firefox Builds Put Tabs on the Title Bar (Available for Download) Android Trojan Found in the Wild Chaos, Panic, and Disorder Wallpaper

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  • Google I/O 2010: Google TV Keynote - Introducing Google TV

    Google I/O 2010: Google TV Keynote - Introducing Google TV Due to licensing and permissions issues, we are unable to show the full Google TV demonstration from the Day 2 keynote at Google I/O. Until we are able to get these permissions, please check out these clips. For Google I/O session videos, presentations, developer interviews and more, go to: code.google.com/io From: GoogleDevelopers Views: 30 1 ratings Time: 06:55 More in Science & Technology

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  • Google I/O 2010: Google TV Keynote - Android Apps On Google TV

    Google I/O 2010: Google TV Keynote - Android Apps On Google TV Due to licensing and permissions issues, we are unable to show the full Google TV demonstration from the Day 2 keynote at Google I/O. Until we are able to get these permissions, please check out these clips. For Google I/O session videos, presentations, developer interviews and more, go to: code.google.com/io From: GoogleDevelopers Views: 8 0 ratings Time: 03:18 More in Science & Technology

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