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• Is setting an empty/blank DNS A record allowed?

  - by John

  I'm trying to wrap my head around the wonderful world on DNS. I have created a zone file for example.com which contains: @ A 1.2.3.4 * A 1.2.3.4 However I am also setting up my local DNS, local.example.com which I have created a separate zone file for containing the following: machine1 A 192.168.0.1 machine2 A 192.168.0.2 When I dig machine1.local.example.com it returns A record 192.168.0.1, great. Sadly, badmachine.local.example.com returns 1.2.3.4, as does local.example.com. I'm not sure of the best way to prevent this. If I add the following to the local.example.com empty A records are returned for the above 2 examples as is the behaviour I desire: @ A * A Is this allowed? Is this best practice, or am I doing things terribly wrong? I'm using PowerDNS with BIND backend. Thanks for your thoughts!

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• Does the nginx “upstream” directive have a port setting?

  - by orzzzzz

  moved from:http://stackoverflow.com/questions/3748517/does-nginx-upstream-has-a-port-setting I use upstream and proxy for load balancing. The directive proxy_pass http://upstream_name uses the default port, which is 80. However, if the upstream server does not listen on this port, then the request fails. How do I specify an alternate port? my configuration: http{ #... upstream myups{ server 192.168.1.100:6666; server 192.168.1.101:9999; } #.... server{ listen 81; #..... location ~ /myapp { proxy_pass http://myups:81/; } } nginx -t: [warn]: upstream "myups" may not have port 81 in /opt/nginx/conf/nginx.conf:78.

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• Firefox 16: Setting to bookmark always to Toolbar by Shortcut?

  - by Echt Einfach TV

  The question sounds easy but I could not find a solution using google search. Maybe you have an idea: I am searching for the Firefox setting to bookmark always to the toolbar. If I click CTRL+D the default "Folder" is "Bookmarks Menu". I'd like to have it always "Bookmarks Toolbar", without the need of changing it every time. Screenshot: http://i.imgur.com/wzxt5.png PS: I know that you can use the mouse and drag the icon from the URL to the toolbar. But using the keyboard more and more as it is just faster, this is not an option.

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• Setting up Django on an internal server (os.environ() not working as expected?)

  - by monkut

  I'm trying to setup Django on an internal company server. (No external connection to the Internet.) Looking over the server setup documentation it appears that the "Running Django on a shared-hosting provider with Apache" method seems to be the most-likely to work in this situation. Here's the server information: Can't install mod_python no root access Server is SunOs 5.6 Python 2.5 Apache/2.0.46 I've installed Django (and flup) using the --prefix option (reading again I probably should've used --home, but at the moment it doesn't seem to matter) I've added the .htaccess file and mysite.fcgi file to my root web directory as mentioned here. When I run the mysite.fcgi script from the server I get my expected output (the correct site HTML output). But, it won't when trying to access it from a browser. It seems that it may be a problem with the PYTHONPATH setting since I'm using the prefix option. I've noticed that if I run mysite.fcgi from the command-line without setting the PYTHONPATH enviornment variable it throws the following error: prompt$ python2.5 mysite.fcgi ERROR: No module named flup Unable to load the flup package. In order to run django as a FastCGI application, you will need to get flup from http://www.saddi.com/software/flup/ If you've already installed flup, then make sure you have it in your PYTHONPATH. I've added sys.path.append(prefixpath) and os.environ['PYTHONPATH'] = prefixpath to mysite.fcgi, but if I set the enviornment variable to be empty on the command-line then run mysite.fcgi, I still get the above error. Here are some command-line results: >>> os.environ['PYTHONPATH'] = 'Null' >>> >>> os.system('echo $PYTHONPATH') Null >>> os.environ['PYTHONPATH'] = '/prefix/path' >>> >>> os.system('echo $PYTHONPATH') /prefix/path >>> exit() prompt$ echo $PYTHONPATH Null It looks like Python is setting the variable OK, but the variable is only applicable inside of the script. Flup appears to be distributed as an .egg file, and my guess is that the egg implementation doesn't take into account variables added by os.environ['key'] = value (?) at least when installing via the --prefix option. I'm not that familiar with .pth files, but it seems that the easy-install.pth file is the one that points to flup: import sys; sys.__plen = len(sys.path) ./setuptools-0.6c6-py2.5.egg ./flup-1.0.1-py2.5.egg import sys; new=sys.path[sys.__plen:]; del sys.path[sys.__plen:]; p=getattr(sys,'__egginsert',0); sy s.path[p:p]=new; sys.__egginsert = p+len(new) It looks like it's doing something funky, anyway to edit this or add something to my code so it will find flup?

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• What Determines the Default Setting of the x87 FPU Control Word?

  - by Rick Regan

  What determines the default setting of the x87 FPU control word -- specifically, the precision control field? Does the compiler set it based on the target processor? Is there a compiler option to change it? Using Microsoft Visual C++ 2008 Express Edition on an Intel Core Duo processor, the default setting for the precision control field is "01b", meaning double (53 bit) precision. I'm wondering -- why is the default not "11"b, or extended (64 bit) precision? (I know I can change it using _controlfp.)

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• How can I remove .NET isolated storage setting folders during WiX uninstallation?

  - by Luke

  I would like to remove the isolated storage folders that are created by a .NET application when using My.Settings etc. The setting files are stored in a location like C:\Users\%Username%\AppData\Roaming\App\App.exe_Url_r0q1rvlnrqsgjkcosowa0vckbjarici4 As per this question StackOverflow: Removing files when uninstalling Wix I can uninstall a folder using: <Directory Id="AppDataFolder" Name="AppDataFolder"> <Directory Id="MyAppFolder" Name="My"> <Component Id="MyAppFolder" Guid="YOURGUID-7A34-4085-A8B0-8B7051905B24"> <CreateFolder /> <RemoveFile Id="PurgeAppFolder" Name="*.*" On="uninstall" /> </Component> </Directory> </Directory> <!-- LocalAppDataFolder--> This doesn't support sub-folders etc. Is the only option a custom .NET action or is there a more simple approach for removing these .NET generated setting folders?

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• What does setting the GL color before doing a texture mapping operation do?

  - by quixoto

  I am looking at some sample code in a book that creates a jittered antialiasing effect by repeatedly rendering a scene (at different offsets) onto a offscreen texture, then using that texture to repeatedly draw a quad in the main view with some blend stuff set up. To accumulate the color "correctly", the code is setting the color like so: glColor4f(f, f, f, 1); where f is 1.0/number_of_samples, and then binding the offscreen texture and rendering it. Since textures come with their own color and alpha data, what is the effect (mathematically and intuitively) that setting the overall "color" in advance achieves? Thanks.

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• what is the best setting for using lighttpd on 8G ram?

  - by user299415

  I have running 8GB ram and 8 x Xeon 3361 system! What is the best setting for running simultaneous connection! What is the maximum? Is setting like this correct? server.max-keep-alive-requests = 0 server.max-keep-alive-idle = 10 server.max-read-idle = 60 server.max-write-idle = 60 server.event-handler = "linux-sysepoll" server.max-fds = 2048 fastcgi.server = ( ".php" = ( "localhost" = ( "socket" = "/tmp/php-fastcgi.socket", "bin-path" = "/usr/bin/php-cgi", "max-procs" = 20, "bin-environment" = ( "PHP_FCGI_CHILDREN" = "40", "PHP_FCGI_MAX_REQUESTS" = "800" ), "broken-scriptfilename" = "enable" ) ) ) please help me!

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• How to bind a control boolean property to contrary of boolean application setting?

  - by salman

  How to bind a control Boolean property to contrary of Boolean application setting?

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• what's the condition for setting a cookie in safari?

  - by Woho87

  Hi! I got problem with safari on mac not sending cookies I'm setting. I can see that they are set in preferences - cookies. But they never sends back to my server. And I'm not setting the cookies in a http 302 status, which was a bug that I found here. There must be at lot of you out there having same issues as me. How did you get it work? And yes I have search countless times and found nothing on this issue

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• how to set the classpath using a java program without setting it form command line?

  - by subran

  how to set the classpath using a java program without setting it form command line?

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• SQL Server suddenly using only a small portion of CPU.

  - by hermiod

  We've got a Windows 2008 R2 server running SQL Server 2008. All of a sudden, the SQLServer process is refusing to go above 20% CPU usage. As of last week, when running a heavy query against the db it would rise to 100% usage as I would expect. We've had this server for a while and it seems strange that it would just suddenly have this limit. This limit is causing our queries to take a lot longer than they normally would. No one has (knowingly at least) made any changes to the server configuration. After a bit of investigation, I discovered the sys.dm_os_sys_memory view. This shows 'available physical memory is high' bu at the same time the available physical memory is 339552kb where as the total is 4193848kb. It is worth noting that this is a virtual server running on vmware. Is there a setting somewhere with in SQL Server that sets the maximum CPU usage? I've found the settings in resource governor, although this is currently off as it always has been. We have recently started using Spotlight for SQL Server by Quest Software. It's playback database was located on this server for a short time this morning, I first noticed the problem shortly afterwards, although I hadn't been doing any queries prior to this so I don't know if this is the point at which the problem began, however the database was working as expected on Friday afternoon. The Windows log shows that the following settings were applied to the SpotlightPlaybackDatabase when it was created. 02/21/2011 08:45:02,spid60,Unknown,Setting database option TORN_PAGE_DETECTION to ON for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option MULTI_USER to ON for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option READ_WRITE to ON for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option AUTO_UPDATE_STATISTICS to ON for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option AUTO_CREATE_STATISTICS to ON for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option ANSI_WARNINGS to OFF for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option CONCAT_NULL_YIELDS_NULL to ON for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option RECOVERY to SIMPLE for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option QUOTED_IDENTIFIER to OFF for database SpotlightPlaybackDatabase. 02/21/2011 08:45:02,spid60,Unknown,Setting database option AUTO_CLOSE to OFF for database SpotlightPlaybackDatabase. Could any of these settings changes modified the settings applied to the whole server?

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• Microsoft SSIS Service: Registry setting specifying configuration file does not exist.

  - by mbrc

  Microsoft SSIS Service: Registry setting specifying configuration file does not exist. Attempting to load default config file. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. this is my MsDtsSrvr.ini.xml <?xml version="1.0" encoding="utf-8"?> <DtsServiceConfiguration xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <StopExecutingPackagesOnShutdown>true</StopExecutingPackagesOnShutdown> <TopLevelFolders> <Folder xsi:type="SqlServerFolder"> <Name>MSDB</Name> <ServerName>.\SQL2008</ServerName> </Folder> <Folder xsi:type="FileSystemFolder"> <Name>File System</Name> <StorePath>..\Packages</StorePath> </Folder> </TopLevelFolders> </DtsServiceConfiguration> i found here http://msdn.microsoft.com/en-us/library/ms137789.aspx that i need to update my registry. Only entry at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\100\SSIS\ServiceConfigFile is (Default) with no value. what i must add in registry that i will not get this error any more?

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• Apache: Setting DocumentRoot to cgi directory results in downloading file instead of executing it.

  - by fastmonkeywheels

  I have a c-compiled CGI application that I need to execute from the DocumentRoot of my Apache server. The CGI file is called index.cgi and is located at /usr/lib/cgi-bin/index.cgi. I have the following Directory definition <Directory "/usr/lib/cgi-bin/"> Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch AllowOverride None Order allow,deny Allow from all DirectoryIndex index.cgi </Directory> I have the following VirtualHost setting: <VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot /usr/lib/cgi-bin # ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ ErrorLog /var/log/apache2/error.log LogLevel warn CustomLog /var/log/apache2/access.log combined </VirtualHost> If I go to 127.0.0.1 or 127.0.0.1/index.cgi I get prompted to download the index.cgi file, however if I enable the ScriptAlias in the vhost configuration block and go to 127.0.0.1/cgi-bin/index.cgi I see the output of my CGI application. I had originally solved this problem with mod_rewrite, however that worked on my test system the target (embedded) doesn't have that module available so I'm looking at another route (again).

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• Is there an IE8 setting or policy to make it work like IE7 with respect to persistent connections?

  - by Stephen Pace

  I am working with a commercial application running on XP using IIS 5.1. Periodically the application is returning an IIS error "There are too many people accessing the Web site at this time." This is caused by Microsoft artificially limiting the number of connections (10) under IIS 5.1 under Windows XP, but in this case, there is really only one user (albeit a few tabs open at a time). Microsoft suggests you can reduce the problem by turning off HTTP Keep-Alives for that particular web site: http://support.microsoft.com/kb/262635 If you use IIS 5.0 on Windows 2000 Professional or IIS 5.1 on Microsoft Windows XP Professional, disable HTTP keep-alives in the properties of the Web site. When you do this, a limit of 10 concurrent connections still exists, but IIS does not maintain connections for inactive users. I may do that; however, I'm worried about performance degradation. However, I also notice that IE8 appears to handle this differently than IE7. By default, IE6 and IE7 use 2 persistent connections while IE8 uses 6. Perhaps in this case IE8 itself is generating multiple connections in an attempt to be faster, but those additional connections are overwhelming the artificially limited IIS 5.1 on XP? Assuming that is the case, is there an Internet Explorer option, registry setting, or policy I can set to force IE8 to behave like IE7 with respect to persistent connections? I would not set this for all users, but for the small number of users that used this application, it might solve their intermittent problem until the application can be rehosted on Windows Server 2008. Thanks.

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• Setting Windows 7's Recycle Bin to automatically have a default disk space allocation for deleted files from newly mounted drives

  - by galacticninja

  How do I set Windows 7's Recycle Bin to automatically have a default disk space allocation for deleted files from external hard drives and TrueCrypt-mounted volumes? I remember in Windows XP, I can set a percentage of total disk space that will automatically be used as storage capacity for deleted files by the Recycle Bin, and this will be applied to all external HDs or TC-mounted volumes. Windows 7 defaults to the 'Don't move files to the Recycle Bin. Remove files immediately when deleted' setting for newly mounted external HDs and TC mounted volumes. Since I am expecting deleted files to go to the Recycle Bin, sometimes this causes an 'Oops' when I delete files in external hard drives or TC mounted volumes, as Windows does not move deleted files to the Recycle Bin, but just deletes the files permanently. I have to remember to manually set a custom Recycle Bin storage space for each new drive that is mounted by Windows to avoid this issue. I only use and mount TrueCrypt file containers, not drives. I also don't mount TrueCrypt file containers as removable drives. ('Mount volume as removable medium' is unchecked in Mount Options.) In my $Recycle.Bin > Properties > Security settings, 'System' and 'Administrators' are already set to 'Full Control', while 'Users' only have 'Special Permissions' checked in gray. There are no other groups. I haven't changed or edited anything in these settings. I am using Windows 7 Ultimate.

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• A little guidance setting up FTP server authentication on Windows Server 2008 R2 standard?

  - by Ropstah

  I have a (clean) server running Windows Server 2008 R2 standard. I would just like to use it for serving a website and a FTP server through IIS. IIS is installed and serves my website propery. I have now added a FTP site but when I try to logon using my user/pass i get the following error: 530 User cannot login From this article (http://support.microsoft.com/kb/200475) I understand that these four causes can be pointed out: The Allow only anonymous connections security setting has been turned on in the Microsoft Management Console (MMC). Not the case The username does not have the Log on locally permission in User Manager. The user is in the Users group, however I'm not able to logon through RDP. I tried configuring this by following this article through GPMC however this only works when I'm logged in as a domain user on a domain controller which I'm not: I'm logged in as administrator The username does not have the Access this computer from the network permission in User Manager. Not sure what this implies...? The Domain Name was not specified together with the username (in the form of DOMAIN\username). Tried adding the server name: server\username, not working... I am an absolute server noob and I'd just like to be able to connect through FTP... Any guidance is highly appreciated!

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• Possible Solution for Setting up a Linux VPN Server to Encrypt WLAN Traffic of Macs and iPhones on

  - by GorillaPatch

  I would like to set up a VPN server on debian linux to encrypt wireless traffic coming from my Mac or iOS device. I would like to use a certificate-based solution. Setting up a PKI infrastructure and managing certificates is OK for me. 1. Which server to pick? By looking through the internet and here on stackoverflow I found the following possible solutions: strongSwan IPSec and racoon Which solution is feasible for a linode running debian squeeze? 2. How to configure the network? If I understood correctly a VPN has a virtual network interface as an endpoint on the server side. Naively I would think that I need a DHCP server running on the server to assign a dynamic private IP (like of the class C network 192.168.xxx.xxx) to the connecting clients. Next I think I would need to set up masquerading to NAT the incoming VPN traffic to the real interface directly connected to the internet. Is this the right way to go? Do you have any configuration examples? I often saw VPN configurations used to connect to your home network, but that is not what I am looking for. I have a server up in the internet and want to use it as a proxy to encrypt traffic in insecure network environments like public WLANs.

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• CacheAdapter 2.4 – Bug fixes and minor functional update

  - by Glav

  Note: If you are unfamiliar with the CacheAdapter library and what it does, you can read all about its awesome ability to utilise memory, Asp.Net Web, Windows Azure AppFabric and memcached caching implementations via a single unified, simple to use API from here and here.. The CacheAdapter library is receiving an update to version 2.4 and is currently available on Nuget here. Update: The CacheAdapter has actualy just had a minor revision to 2.4.1. This significantly increases the performance and reliability in memcached scenario under more extreme loads. General to moderate usage wont see any noticeable difference though. Bugs This latest version fixes a big that is only present in the memcached implementation and is only seen in rare, intermittent times (making i particularly hard to find). The bug is where a cache node would be removed from the farm when errors in deserialization of cached objects would occur due to serialised data not being read from the stream in entirety. The code also contains enhancements to better surface serialization exceptions to aid in the debugging process. This is also specifically targeted at the memcached implementation. This is important when moving from something like memory or Asp.Web caching mechanisms to memcached where the serialization rules are not as lenient. There are a few other minor bug fixes, code cleanup and a little refactoring. Minor feature addition In addition to this bug fix, many people have asked for a single setting to either enable or disable the cache.In this version, you can disable the cache by setting the IsCacheEnabled flag to false in the application configuration file. Something like the example below: <Glav.CacheAdapter.MainConfig> <setting name="CacheToUse" serializeAs="String"> <value>memcached</value> </setting> <setting name="DistributedCacheServers" serializeAs="String"> <value>localhost:11211</value> </setting> <setting name="IsCacheEnabled" serializeAs="String"> <value>False</value> </setting> </Glav.CacheAdapter.MainConfig> Your reasons to use this feature may vary (perhaps some performance testing or problem diagnosis). At any rate, disabling the cache will cause every attempt to retrieve data from the cache, resulting in a cache miss and returning null. If you are using the ICacheProvider with the delegate/Func<T> syntax to populate the cache, this delegate method will get executed every single time. For example, when the cache is disabled, the following delegate/Func<T> code will be executed every time: var data1 = cacheProvider.Get<SomeData>("cache-key", DateTime.Now.AddHours(1), () => { // With the cache disabled, this data access code is executed every attempt to // get this data via the CacheProvider. var someData = new SomeData() { SomeText = "cache example1", SomeNumber = 1 }; return someData; }); One final note: If you access the cache directly via the ICache instance, instead of the higher level ICacheProvider API, you bypass this setting and still access the underlying cache implementation. Only the ICacheProvider instance observes the IsCacheEnabled setting. Thanks to those individuals who have used this library and provided feedback. Ifyou have any suggestions or ideas, please submit them to the issue register on bitbucket (which is where you can grab all the source code from too)

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• Help needed setting up nginx to serve static files.

  - by Catalina

  Hi Guys, I'm trying to setup nginx to serve static files. Basically all I need is to have http://mydomain.com/site_media/ point to /var/django/myproject/site_media. I have tried so many configurations and when I test it I always get a 404 error for static files. Can anyone please tell me what I'm doing wrong or how I should be setting this up? This is my current nginx configuration file. user www-data; worker_processes 1; #error_log /usr/local/nginx/logs/error.log; #pid /usr/local/nginx/logs/nginx.pid; events { worker_connections 1024; use epoll; } http { # Enumerate all the Tornado servers here upstream frontends { server 127.0.0.1:8000; server 127.0.0.1:8001; server 127.0.0.1:8002; server 127.0.0.1:8003; } include mime.types; default_type application/octet-stream; #access_log /usr/local/nginx/logs/access.log; keepalive_timeout 65; proxy_read_timeout 200; sendfile on; tcp_nopush on; tcp_nodelay on; gzip on; gzip_min_length 1000; gzip_proxied any; gzip_types text/plain text/html text/css text/xml application/x-javascript application/xml application/atom+xml text/javascript; proxy_next_upstream error; server { listen 80; # Allow file uploads client_max_body_size 50M; location ^~ /site_media/ { root /var/django/myproject/site_media; if ($query_string) { expires max; } } location = /favicon.ico { rewrite (.*) /site_media/favicon.ico; } location = /robots.txt { rewrite (.*) /site_media/robots.txt; } location / { proxy_pass_header Server; proxy_set_header Host $http_host; proxy_redirect off; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Scheme $scheme; proxy_pass http://frontends; } } #include /usr/local/nginx/sites-enabled/*; } Thanks, Cata

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• Why is setting HTML5's CanvasPixelArray values ridiculously slow and how can I do it faster?

  - by Nixuz

  I am trying to do some dynamic visual effects using the HTML 5 canvas' pixel manipulation, but I am running into a problem where setting pixels in the CanvasPixelArray is ridiculously slow. For example if I have code like: imageData = ctx.getImageData(0, 0, 500, 500); for (var i = 0; i < imageData.length; i += 4){ imageData.data[i] = buffer[i]; imageData.data[i + 1] = buffer[i + 1]; imageData.data[i + 2] = buffer[i + 2]; } ctx.putImageData(imageData, 0, 0); Profiling with Chrome reveals, it runs 44% slower than the following code where CanvasPixelArray is not used. tempArray = new Array(500 * 500 * 4); imageData = ctx.getImageData(0, 0, 500, 500); for (var i = 0; i < imageData.length; i += 4){ tempArray[i] = buffer[i]; tempArray[i + 1] = buffer[i + 1]; tempArray[i + 2] = buffer[i + 2]; } ctx.putImageData(imageData, 0, 0); My guess is that the reason for this slowdown is due to the conversion between the Javascript doubles and the internal unsigned 8bit integers, used by the CanvasPixelArray. Is this guess correct? Is there anyway to reduce the time spent setting values in the CanvasPixelArray?

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• Unable to change the system zone setting on Windows Server 2008 R2.

  - by Ganesh

  Hi All, I have an MFC application that tries to change the system zone setting on the Windows Server 2008 R2. I am using the SetTimeZoneInformation() API which fails with the error code 1314 .i.e. “A required privilege is not held by the client.”. Please refer the sample code below: TIME_ZONE_INFORMATION l_TimeZoneInfo; DWORD l_dwRetVal = 0; ZeroMemory(&l_TimeZoneInfo, sizeof(TIME_ZONE_INFORMATION)); l_TimeZoneInfo.Bias = -330; l_TimeZoneInfo.StandardBias = 0; l_TimeZoneInfo.StandardDate.wDay = 0; l_TimeZoneInfo.StandardDate.wDayOfWeek = 0; l_TimeZoneInfo.StandardDate.wHour = 0; l_TimeZoneInfo.StandardDate.wMilliseconds = 0; l_TimeZoneInfo.StandardDate.wMinute = 0; l_TimeZoneInfo.StandardDate.wMonth = 0; l_TimeZoneInfo.StandardDate.wSecond = 0; l_TimeZoneInfo.StandardDate.wYear = 0; CString l_csDaylightName = _T("India Daylight Time"); CString l_csStdName = _T("India Standard Time"); wcscpy(l_TimeZoneInfo.DaylightName,l_csDaylightName.GetBuffer(l_csDaylightName.GetLength())); wcscpy(l_TimeZoneInfo.StandardName,l_csStdName.GetBuffer(l_csStdName.GetLength())); ::SetLastError(0); if(0 == ::SetTimeZoneInformation(&l_TimeZoneInfo)) { l_dwRetVal = ::GetLastError(); CString l_csErr = _T(""); l_csErr.Format(_T("%d"),l_dwRetVal); } The MFC application has been developed using Visual Studio 2008 and is UAC aware i.e. the application has UAC enabled in its manifest file with the UAC execution level set to “HighestAvailable”. I have administrator privileges and when I run the application it still fails to change the system zone setting. Thanks in Advance, Ganesh

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• Why is setting HTML5's CanvasPixelArray values is ridiculously slow and how can I do it faster?

  - by Nixuz

  I am trying to do some dynamic visual effects using the HTML 5 canvas' pixel manipulation, but I am running into a problem where setting pixels in the CanvasPixelArray is ridiculously slow. For example if I have code like: imageData = ctx.getImageData(0, 0, 500, 500); for (var i = 0; i < imageData.length; i += 4){ imageData.data[index] = buffer[i]; imageData.data[index + 1] = buffer[i]; imageData.data[index + 2] = buffer[i]; } ctx.putImageData(imageData, 0, 0); Profiling with Chrome reveals, it runs 44% slower than the following code where CanvasPixelArray is not used. tempArray = new Array(500 * 500 * 4); imageData = ctx.getImageData(0, 0, 500, 500); for (var i = 0; i < imageData.length; i += 4){ tempArray[index] = buffer[i]; tempArray[index + 1] = buffer[i]; tempArray[index + 2] = buffer[i]; } ctx.putImageData(imageData, 0, 0); My guess is that the reason for this slowdown is due to the conversion between the Javascript doubles and the internal unsigned 8bit integers, used by the CanvasPixelArray. Is this guess correct? Is there anyway to reduce the time spent setting values in the CanvasPixelArray?

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• how ca i make Description panel to pause after it is shown on the slideshow?

  - by ershad

  I am new to Javascript. I have a slide show with images fading and description coming from left to right. I need to pause the description panel for some sec. How can i do that? The code is: showhidedescpanel:function(state, animateduration){ var setting=this.setting var endpoint=(state=="show")? setting.dimensions[1]-setting.panelwidth : this.setting.dimensions[1]-410 setting.$descpanel.stop().animate({left:endpoint}, (2000), function(){ if (setting.descreveal=="always" && state=="hide") setting.$restorebutton.css({visibility:'visible'}) //show restore button }) }

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• Facing issues in setting up VPN connection(IKEv1) using iphone (Defult Cisco VPN client) and Strongswan 4.5.0 server

  - by Kushagra Bhatnagar

  I am facing issues in setting up VPN connection(IKEv1) using iPhone (Defult Cisco VPN client) and Strongswan 4.5.0 server. The Strongswan server is running on Ubuntu Linux, which is connected to some wifi hotspot. This is the guide which was used. I generated CA, server and client certificate, with the only difference mentioned below. “While generating server certificate, as per link CN=vpn.strongswan.org instead of this I changed CN name to CN=192.168.43.212.” Once certificates are generated, following (clientCert.p12 and caCert.pem) are sent to mobile via mail and installed on iphone. After installation I notice that certificates are considered as trusted also. Below are the ip addresses assigned to various interfaces Linux server wlan0 interface ip where server is running: 192.168.43.212 Iphone eth0 interface ip address: 192.168.43.72. iphone is also attached with the same wifi hotspot. Below is the snapshot of client configurations. Description Strong swan Server 192.168.43.212 Account ipsecvpn Password ***** Use certificate ON Certificate client The above username and password are in sync with the ipsec.secrets file. I am using the following ipsec.conf configuration: # basic configuration config setup plutodebug=all # crlcheckinterval=600 # strictcrlpolicy=yes # cachecrls=yes nat_traversal=yes # charonstart=yes plutostart=yes # Add connections here. # Sample VPN connections conn ios1 keyexchange=ikev1 authby=xauthrsasig xauth=server left=%defaultroute leftsubnet=0.0.0.0/0 leftfirewall=yes leftcert=serverCert.pem right=192.168.43.72 rightsubnet=10.0.0.0/24 rightsourceip=10.0.0.2 rightcert=clientCert.pem pfs=no auto=add With the above configurations when I enable VPN on iphone, it says Could not able to verify server certificate. I ran Wireshark on a Linux server and observe that initially some ISAKMP message exchanges happens between client and server, which are successful but before authorization, client is sending some informational message and soon after this client is showing error as popup Could not able to verify server certificate. Capture logs on Strongswan server and in server logs below errors are observed: From auth.log Apr 25 20:16:08 Linux pluto[4025]: | ISAKMP version: ISAKMP Version 1.0 Apr 25 20:16:08 Linux pluto[4025]: | exchange type: ISAKMP_XCHG_INFO Apr 25 20:16:08 Linux pluto[4025]: | flags: ISAKMP_FLAG_ENCRYPTION Apr 25 20:16:08 Linux pluto[4025]: | message ID: 9d 1a ea 4d Apr 25 20:16:08 Linux pluto[4025]: | length: 76 Apr 25 20:16:08 Linux pluto[4025]: | ICOOKIE: f6 b7 06 b2 b1 84 5b 93 Apr 25 20:16:08 Linux pluto[4025]: | RCOOKIE: 86 92 a0 c2 a6 2f ac be Apr 25 20:16:08 Linux pluto[4025]: | peer: c0 a8 2b 48 Apr 25 20:16:08 Linux pluto[4025]: | state hash entry 8 Apr 25 20:16:08 Linux pluto[4025]: | state object not found Apr 25 20:16:08 Linux pluto[4025]: **packet from 192.168.43.72:500: Informational Exchange is for an unknown (expired?) SA** Apr 25 20:16:08 Linux pluto[4025]: | next event EVENT_RETRANSMIT in 8 seconds for #8 Apr 25 20:16:16 Linux pluto[4025]: | Apr 25 20:16:16 Linux pluto[4025]: | *time to handle event Apr 25 20:16:16 Linux pluto[4025]: | event after this is EVENT_RETRANSMIT in 2 seconds Apr 25 20:16:16 Linux pluto[4025]: | handling event EVENT_RETRANSMIT for 192.168.43.72 "ios1" #8 Apr 25 20:16:16 Linux pluto[4025]: | sending 76 bytes for EVENT_RETRANSMIT through wlan0 to 192.168.43.72:500: Apr 25 20:16:16 Linux pluto[4025]: | a6 a5 86 41 4b fb ff 99 c9 18 34 61 01 7b f1 d9 Apr 25 20:16:16 Linux pluto[4025]: | 08 10 06 01 e9 1c ea 60 00 00 00 4c ba 7d c8 08 Apr 25 20:16:16 Linux pluto[4025]: | 13 47 95 18 19 31 45 30 2e 22 f9 4d 85 2c 27 bc Apr 25 20:16:16 Linux pluto[4025]: | 9e 9b e1 ae 1e 35 51 6f ab 80 f5 73 3c 15 8d 20 Apr 25 20:16:16 Linux pluto[4025]: | 4b 46 47 86 50 24 3f 13 15 7d d5 17 Apr 25 20:16:16 Linux pluto[4025]: | inserting event EVENT_RETRANSMIT, timeout in 40 seconds for #8 Apr 25 20:16:16 Linux pluto[4025]: | next event EVENT_RETRANSMIT in 2 seconds for #10 Apr 25 20:16:16 Linux pluto[4025]: | rejected packet: Apr 25 20:16:16 Linux pluto[4025]: | Apr 25 20:16:16 Linux pluto[4025]: | control: Apr 25 20:16:16 Linux pluto[4025]: | 30 00 00 00 00 00 00 00 00 00 00 00 0b 00 00 00 Apr 25 20:16:16 Linux pluto[4025]: | 6f 00 00 00 02 03 03 00 00 00 00 00 00 00 00 00 Apr 25 20:16:16 Linux pluto[4025]: | 02 00 00 00 c0 a8 2b 48 00 00 00 00 00 00 00 00 Apr 25 20:16:16 Linux pluto[4025]: | name: Apr 25 20:16:16 Linux pluto[4025]: | 02 00 01 f4 c0 a8 2b 48 00 00 00 00 00 00 00 00 Apr 25 20:16:16 Linux pluto[4025]: **ERROR: asynchronous network error report on wlan0 for message to 192.168.43.72 port 500, complainant 192.168.43.72: Connection refused [errno 111, origin ICMP type 3 code 3 (not authenticated)]** Anybody please provide some update about this error and how to solve this issue.

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