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  • Local network cache of PHP and Apache2 on Win Server 2008 R2

    - by Ahmed Benlahsen
    Software configuration : I have a new server with Windows Server 2008 R2 installed via VMWare. I have installed Apache2.2, PHP5.2 and MySQL5.5 as separate packages. Issue : On my first installation of my application, all works great. When I updated some JS and CSS files and accessed my application again from a PC on local network, I got the old JS and CSS versions. When I access the same application on local server I got the latest versions of those files. Link of my application on local server is : http://localhost/BADIL Link of my application from local network is : http://LOCAL_SERVER_IP/BADIL I think that must be some cache but I don't know where. Maybe on Win Server 2008 R2 or on VMWare? The question is: Why, when I access my application on the server, everything works fine, but when I access the same application from a local network, I do not see the updated versions of JS and CSS files?

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  • Author Tools for Classroom Material?

    - by user1413
    I'm interested in putting a whole bunch of classroom material online. This material ranges from accounting classes to yoga. I would like to find a simple to use authoring tool that the people who teach the classes can use to put the material online. In other words, I do not want a tool that requires a developer. A person who knows the subject matter and is willing to read the manual should be able to put their material online. At minimum, this tool should allow for text and multi-media to be chained together in a logical form and it should allow quizzes to be created and graded. Even better would be for the tool to have some "smarts" so that subject areas which the student does not understand can be drilled. Even better would be for the tool to have ecommerce built in so that the instructors can charge for the classes. Are there any such tools?

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  • Linux - Create ftp account with read/write access to only 1 folder

    - by Gublooo
    Hey guys.... I have never worked on linux and dont plan on working on it either - The only command I probably know is "ls" :) I am hosting my website on Eapps and use their cpanel to setup everything so never worked with linux. Now I have this one time case - where I need to provide access to a contractor to fix the CSS issues on my website. He basically needs FTP (read/write) access to certain folders. At a high level - this is my code structure /home/webadmin/example.com/html/images /css /js /login.php /facebook.php /home/webadmin/example.com/application/library /views /models /controllers /config /bootstrap.php /home/webadmin/example.com/cgi-bin I want the new user to be able to have access to only these folders /home/webadmin/example.com/html/js /home/webadmin/example.com/html/css /home/webadmin/example.com/application/views He should not be able to view even the content of other folders including files like bootstrap.php or login.php etc If any sys admins can help me set this account up - will really appreciate it. Thanks

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  • Linux - Create ftp account with read/write access to only 1 folder

    - by Gublooo
    Hey guys.... I have never worked on linux and dont plan on working on it either - The only command I probably know is "ls" :) I am hosting my website on Eapps and use their cpanel to setup everything so never worked with linux. Now I have this one time case - where I need to provide access to a contractor to fix the CSS issues on my website. He basically needs FTP (read/write) access to certain folders. At a high level - this is my code structure /home/webadmin/example.com/html/images /css /js /login.php /facebook.php /home/webadmin/example.com/application/library /views /models /controllers /config /bootstrap.php /home/webadmin/example.com/cgi-bin I want the new user to be able to have access to only these folders /home/webadmin/example.com/html/js /home/webadmin/example.com/html/css /home/webadmin/example.com/application/views He should not be able to view even the content of other folders including files like bootstrap.php or login.php etc If any sys admins can help me set this account up - will really appreciate it. Thanks

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  • Linux - Create ftp account with read/write access to only 1 folder

    - by Gublooo
    Hey guys.... I have never worked on linux and dont plan on working on it either - The only command I probably know is "ls" :) I am hosting my website on Eapps and use their cpanel to setup everything so never worked with linux. Now I have this one time case - where I need to provide access to a contractor to fix the CSS issues on my website. He basically needs FTP (read/write) access to certain folders. At a high level - this is my code structure /home/webadmin/example.com/html/images /css /js /login.php /facebook.php /home/webadmin/example.com/application/library /views /models /controllers /config /bootstrap.php /home/webadmin/example.com/cgi-bin I want the new user to be able to have access to only these folders /home/webadmin/example.com/html/js /home/webadmin/example.com/html/css /home/webadmin/example.com/application/views He should not be able to view even the content of other folders including files like bootstrap.php or login.php etc If any sys admins can help me set this account up - will really appreciate it. Thanks

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  • Adding operation in middle of complex sequence diagram in visio 2003

    - by James
    I am using Microsoft Visio 2003 to define static classes with operations/methods and a sequence diagrams referring to these classes. The sequence diagram is almost done, but i realized that i missed one operation in middle of the diagram. When i try to move rest of the sequences down by selecting it as a block, all the operations in the block loose link with static diagrams. ( Methods which were referred to static classes as fun(), became fun, which means that now they no longer refer to static diagrams and any future changes would not be reflected in dynamic sequence diagrams automatically.) The sequence diagrams have grown to A3 size paper and i have many of such diagrams which needs correction. Manually moving the operations one by one would involve lots of effort. Could someone kindly suggest a way to overcome this problem?

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  • How GZipped contents are transfered on the web?

    - by PJ
    I heard that static contents like CSS and JavaScript can be better delivered in GZip format. And Content Developer Network (CDN) always does so. However I don't understand how the format works. First when I tried making a gzipped file via command-line. The file extension is .gz. This is different from .css and .js. How do browsers recognize which file is gzipped or not. Second, how browsers "decompress" files? I dragged my index.html.gz onto my browsers. But no one worked. How do such gzipped work in the real world? What do I need to do if I want to serve CSS/JavaScript using Gzipped format.

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  • How to determine which source files are required for an Eclipse run configuration

    - by isme
    When writing code in an Eclipse project, I'm usually quite messy and undisciplined in how I create and organize my classes, at least in the early hacky and experimental stages. In particular, I create more than one class with a main method for testing different ideas that share most of the same classes. If I come up with something like a useful app, I can export it to a runnable jar so I can share it with friends. But this simply packs up the whole project, which can become several megabytes big if I'm relying on large library such as httpclient. Also, if I decide to refactor my lump of code into several projects once I work out what works, and I can't remember which source files are used in a particular run configuration, all I can do it copy the main class to a new project and then keep copying missing types till the new project compiles. Is there a way in Eclipse to determine which classes are actually used in a particular run configuration?

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  • make IIS 7.5 cache static content files over diferent pages

    - by Achilles
    On a Windows 2008 R2, using DNS and IIS I've established my development test server; i.e. I'll have a web application that I can browse on http://test.dev I've moved all the static content files like images, js files and css files into another application which is visible on http://cdn.test.dev test.dev, uses cdn.test.dev urls like http://cdn.test.dev/js/jquery.js to load js, css and images. When I first load "~/" of test.dev, all files will load with a response code of 200; when I press F5 in Firefox, all files, except the "~/default.aspx", will load with 304 response code; but pressing Ctrl+F5 loads them again with a 200 code; if I browse another url like "~/pages/" in test.dev, all of those static files will reload with a 200 code... Is this normal or I'm doing something wrong? Actually, I'm looking for a behavior like this: I want the client to load http://cdn.test.dev/js/jquery.js, only once. I want the client's browser to use this jquery.js file, from cache, in all other pages of test.dev Is this possible? This is the web.config file I have in the root directory of cdn.test.dev: <configuration> <system.webServer> <caching> <profiles> <add extension=".png" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".gif" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".jpg" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".js" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".css" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".axd" kernelCachePolicy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> </profiles> </caching> <httpProtocol allowKeepAlive="true"> <customHeaders> <add name="Cache-Control" value="public, max-age=31536000" /> </customHeaders> </httpProtocol> <validation validateIntegratedModeConfiguration="false" /> <modules runAllManagedModulesForAllRequests="true"> <remove name="RadUploadModule" /> <remove name="RadCompression" /> <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" preCondition="integratedMode" /> <add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="integratedMode" /> </modules> <handlers> <remove name="ChartImage_axd" /> <remove name="Telerik_Web_UI_SpellCheckHandler_axd" /> <remove name="Telerik_Web_UI_DialogHandler_aspx" /> <remove name="Telerik_RadUploadProgressHandler_ashx" /> <remove name="Telerik_Web_UI_WebResource_axd" /> <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode" /> <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode" /> <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode" /> <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode" /> <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode" /> </handlers> <security> <requestFiltering> <requestLimits maxAllowedContentLength="10485760" /> </requestFiltering> </security> <staticContent> <clientCache cacheControlMode="UseExpires" httpExpires="Wed, 01 Jan 2020 00:00:00 GMT"/> </staticContent> </system.webServer> <appSettings /> <system.web> <compilation debug="false" targetFramework="4.0" /> <pages> <controls> <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI" /> </controls> </pages> <httpHandlers> <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false" /> <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false" /> <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false" /> <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false" /> <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" /> </httpHandlers> <httpModules> <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" /> <add name="RadCompression" type="Telerik.Web.UI.RadCompression" /> </httpModules> <httpRuntime maxRequestLength="10240" /> </system.web> </configuration> and this is the resulting response header for http://cdn.test.dev/css/global.css: Cache-Control: private,public, max-age=31536000 Content-Type: text/css Content-Encoding: gzip Expires: Wed, 01 Jan 2020 00:00:00 GMT Last-Modified: Mon, 06 Sep 2010 08:53:06 GMT Accept-Ranges: bytes Etag: "0454eca04dcb1:0" Vary: Accept-Encoding Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET Date: Mon, 06 Sep 2010 14:57:08 GMT Content-Length: 4495

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  • My site not directing links correctly.

    - by mystycs
    I have a site at http://badassmonkeys.com/ and when i click any of the links it does not direct it to the actual page but still pulls up the link. For some reason it works perfectly on linux cpanel and actually loads the pages, but on windows in apache, or in IIS even with a rewrite mod for it, it just doesnt work. The links dont go correctly. Is it a php.ini setting? This is my htaccess file if curious, but it works perfect in linux, but not on windows.... DirectoryIndex index.html index.htm default.htm index.php Options +FollowSymlinks RewriteEngine on RewriteRule ^(.*\.(css|swf|js|xml|gif|jpg))$ $1 [L,QSA,NE] RewriteRule ^((images|contactus|css|blog|script|style|docs|admin|fck|swf|Scripts|includes|images|img|uploads|templates|js|css|calendar|expert_area|fckfiles|flvplayer|highslide)/.*) $1 [L,QSA,NE] RewriteRule ((fb_login|phpinfo|aim|csql|info|cron|index|site|simg|img|ajax|ari|fck_install|ffmpeg_test|file|redirect|rss_blogs|rss_info)\.php) $1 [L,QSA,NE] RewriteRule ^ajax/?$ ajax.php [L,QSA,NE] RewriteRule ((xd_receiver)\.htm) $1 [L,QSA,NE] RewriteRule ((google7a9ea27ccf395e97)\.html) $1 [L,QSA,NE] RewriteRule ((favicon)\.ico) $1 [L,QSA,NE] RewriteRule ((W4uFNrPc9U9SAfP7qiJFwCfp7vk)\.txt) $1 [L,QSA,NE] RewriteRule ^(.*)$ index.php?htaccesss=%{HTTP_HOST}%{REQUEST_URI} [L,QSA,NE]

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  • Serving Compressed Files Amazon vs Lightty

    - by tike
    We are currently using amazon CloudFront to serve css and according to Amazon itself, Amazon CloudFront can serve both compressed and uncompressed files from an origin server. But while i check compression it shows everything fine in origin server but it shows notcompressed checking in the link with cloudfront. e.g. http://www.port80software.com/tools/compresscheck.asp?url=http%3A%2F%2Fimgsrv.mydomain.com%2Fen-UK%2Fsomething.css it would result with Compression status: (gzip) while with cloudfront http://www.port80software.com/tools/compresscheck.asp?url=http%3A%2F%2hereisit.cloudfront.net%2F%2Fsomething.css Compression status: Uncompressed Origin server is running lighttpd with mod_deflate however, allowed config is: deflate.allowed_encodings = ("bzip2", "gzip", "deflate") [i would think, putting extra allowed encoding wont affect as such.] Here i am clueless, what is the real issue.

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  • Remove Sync Center icon

    - by Edward Brey
    I accidentally marked a shared folder as "Available Offline" in Windows Explorer on Windows 8.1 computer. This seems to have "woken up" the Sync Center and caused the Sync Center icon to be displayed in the system notification area. Even though I've undid that by marking the folder as not available offline, and furthermore have reset CSC and disabled Offline Files, the Sync Center icon still appears in the overflow section of the system notification area. How do I remove the Sync Center icon and preferably disable the process that is displaying it? Debugging info: The registry shows that stuff is enabled, even though the Sync Center and Offline Files dialog don't indicate that anything is active. HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\SyncMgr\HandlerInstances\{750FDF10-2A26-11D1-A3EA-080036587F03} SyncTime REG_BINARY F6DDC46CBB76CF01 Connected REG_DWORD 0x1 Enabled REG_DWORD 0x0 Active REG_DWORD 0x1 NotifiedOnFirstActivation REG_DWORD 0x0 HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\SyncMgr\HandlerInstances\{750FDF10-2A26-11D1-A3EA-080036587F03}\SyncItems HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\SyncMgr\HandlerInstances\{750FDF10-2A26-11D1-A3EA-080036587F03}\SyncItems\{CBA95344-4284-48CB-8083-3BDE1FDB29A7} SyncTime REG_BINARY F6DDC46CBB76CF01 Connected REG_DWORD 0x1 Enabled REG_DWORD 0x1

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  • Reverse proxy for a subdirectory in nginx

    - by Maple
    I want to set up a Reverse proxy on my VPS for my Heroku app (http://lovemaple.heroku.com) So if I visit mysite.com/blog I can get the content in http://lovemaple.heroku.com I followed the instructions on the Apache wiki. location /couchdb { rewrite /couchdb/(.*) /$1 break; proxy_pass http://localhost:5984; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } I changed it to fit my situation: location /blog { rewrite /blog/(.*) /$1 break; proxy_pass http://lovemaple.heroku.com; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } When I visit mysite.com/blog, the page show up, but js/css file cannot be gotten (404). Their link becomes mysite.com/style.css but not mysite.com/blog/style.css. What's wrong and how can I fix it?

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  • Creating a seperate static content site for IIS7 and MVC

    - by JK01
    With reference to this serverfault blog post: A Few Speed Improvements where it talks about how static content for stackexchange is served from a separate cookieless domain... How would someone go about doing this on IIS7.5 for a ASP.NET MVC site? The plan so far: Register domain eg static.com, create a new website in IIS Manually copy the js / css / images folders from MVC as is so that they have the same paths on the new server Enable IIS gzip settings (js/css = high compression, images = none) Set caching with far future expiry dates <clientCache cacheControlCustom="public" /> in the web.config Never set any cookies on the static.com site Combine and minimize js / css Auto deploy changes in static content with WebDeploy Is this plan correct? And how can you use WebDeploy to deploy the whole web app to one server and then only the static items to another? I can see there is a similar question, but for apache: Creating a cookie-free domain to serve static content so it doesn't apply

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  • How to make sure clients update their browser cache when my website is updated?

    - by user64204
    I am using the HTTP 1.1 Cache-Control header to implement client-side caching. Since I update my website only once a month I would like the CSS and JS files to be cached for 30 days with Cache-Control: max-age=2592000. The problem is that the 30-day period defined by Cache-Control doesn't coincide with the website update cycle, it starts from the moment the users visit the site and ends 30 days later, which means an update could occur in the meantime and users would be running with outdated content for a while, which could break the rendering of the website if for instance the HTML and CSS no longer match. How can I perform client-side caching of content for periods of several days but somehow get users to refresh their CSS/JS files after the website has been updated? One solution I could think of is that if website updates can be schedule, the max-age returned by the server could be decreased every day accordingly so that no matter when people visit the website, the end of caching period would coincide with the update of the website, but changing the server configuration every day goes against one of my sysadmin principles (once it's running, don't touch it).

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  • How to Edit or Add a New Row in jqGrid

    - by Paul
    My jqGrid that does a great job of pulling data from my database, but I'm having trouble understanding how the Add New Row functionality works. Right now, I'm able to edit inline data, but I'm not able to create a new row using the Modal Box. I'm missing that extra logic that says, "If this is a new row, post this to the server side URL" instead of modifying existing data. (Right now, hitting Submit only clears the form and reloads the grid data.) The documentation states that Add New Row is: jQuery("#editgrid").jqGrid('editGridRow',"new",{height:280,reloadAfterSubmit:false}); but I'm not sure how to use that correctly. I've spent alot of time studying the Demos, but they seem to all use an external button to fire the new row command, rather than using the Modal Form, which I want to do. My complete code is here: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>jqGrid</title> <link rel="stylesheet" type="text/css" media="screen" href="../css/ui-lightness/jquery-ui-1.7.2.custom.css" /> <link rel="stylesheet" type="text/css" media="screen" href="../css/ui.jqgrid.css" /> <script src="jquery-1.3.2.min.js" type="text/javascript"></script> <script src="../js/i18n/grid.locale-en.js" type="text/javascript"></script> <script src="jquery.jqGrid.min.js" type="text/javascript"></script> </head> <body> <h2>My Grid Data</h2> <table id="list" class="scroll"></table> <div id="pager" class="scroll c1"></div> <script type="text/javascript"> var lastSelectedId; jQuery('#list').jqGrid({ url:'grid.php', datatype: 'json', mtype: 'POST', colNames:['ID','Name', 'Price', 'Promotion'], colModel:[ {name:'product_id',index:'product_id', width:25,editable:false}, {name:'name',index:'name', width:50,editable:true, edittype:'text',editoptions:{size:30,maxlength:50}}, {name:'price',index:'price', width:50, align:'right',formatter:'currency', editable:true}, {name:'on_promotion',index:'on_promotion', width:50, formatter:'checkbox',editable:true, edittype:'checkbox'}], rowNum:10, rowList:[5,10,20,30], pager: $('#pager'), sortname: 'product_id', viewrecords: true, sortorder: "desc", caption:"Database", width:500, height:150, onSelectRow: function(id){ if(id && id!==lastSelectedId){ $('#list').restoreRow(lastSelectedId); $('#list').editRow(id,true,null,onSaveSuccess); lastSelectedId=id; }}, editurl:'grid.php?action=save'}) .jqGrid('navGrid','#pager', {refreshicon: 'ui-icon-refresh',view:true}, {height:280,reloadAfterSubmit:true}, {height:280,reloadAfterSubmit:true}, {reloadAfterSubmit:true}) .jqGrid('editGridRow',"new",{height:280,reloadAfterSubmit:false}); function onSaveSuccess(xhr) {response = xhr.responseText; if(response == 1) return true; return false;} </script></body></html> If it makes it easier, I'd be willing to scrap the inline editing functionality and do editing and posting via modal boxes. Any help would be greatly appreciated.

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  • Weird call stack when application has frozen

    - by Harriv
    I apparently have an dead lock problem in one of my applications and started investigating EurekaLog stack traces. Here's one recent: Call Stack Information: -------------------------------------------------------------------------------------------------------------------------------------- |Address |Module |Unit |Class |Procedure/Method |Line | -------------------------------------------------------------------------------------------------------------------------------------- |*Exception Thread: ID=14208; Priority=0; Class=; [Main] | |------------------------------------------------------------------------------------------------------------------------------------| |7C82860C|ntdll.dll | | |KiFastSystemCall | | |7C827D27|ntdll.dll | | |ZwWaitForSingleObject | | |77E61C96|kernel32.dll | | |WaitForSingleObjectEx | | |77E61C88|kernel32.dll | | |WaitForSingleObject | | |77E61C7B|kernel32.dll | | |WaitForSingleObject | | |004151C4|MyApp.exe |sysutils.pas |TMultiReadExclusiveWriteSynchronizer|WaitForWriteSignal |16740[1] | |004151BC|MyApp.exe |sysutils.pas |TMultiReadExclusiveWriteSynchronizer|WaitForWriteSignal |16740[1] | |0041522C|MyApp.exe |sysutils.pas |TMultiReadExclusiveWriteSynchronizer|BeginWrite |16818[57] | |004323FB|MyApp.exe |Classes.pas |TDataModule |Create |11357[1] | |004323C0|MyApp.exe |Classes.pas |TDataModule |Create |11356[0] | |007D744D|MyApp.exe |uRORemoteDataModule.pas |TRORemoteDataModule |Create |163[1] | |007D7434|MyApp.exe |uRORemoteDataModule.pas |TRORemoteDataModule |Create |162[0] | |007DBFAB|MyApp.exe |Sentrol_Impl.pas | |Create_Sentrol |85[1] | |00646952|MyApp.exe |uROServer.pas |TROInvoker |CustomHandleMessage |726[11] | |00407BFA|MyApp.exe |system.pas |TInterfacedObject |_AddRef |17972[1] | |00404934|MyApp.exe |system.pas |TObject |GetInterface |9003[8] | |00407B1C|MyApp.exe |system.pas | |_IntfClear |17817[1] | |00404966|MyApp.exe |system.pas |TObject |GetInterface |9009[14] | |004048E8|MyApp.exe |system.pas |TObject |GetInterface |8995[0] | |00407BD7|MyApp.exe |system.pas |TInterfacedObject |QueryInterface |17964[1] | |77E61680|kernel32.dll | | |InterlockedDecrement | | |00407C10|MyApp.exe |system.pas |TInterfacedObject |_Release |17977[1] | |00407B2C|MyApp.exe |system.pas | |_IntfClear |17824[8] | |004067DF|MyApp.exe |system.pas | |_FinalizeArray |15233[100]| |00407B1C|MyApp.exe |system.pas | |_IntfClear |17817[1] | |00646577|MyApp.exe |uROServer.pas |TROClassFactoryList |FindClassFactoryByInterfaceName|619[17] | |77E6166C|kernel32.dll | | |InterlockedIncrement | | |00407BFA|MyApp.exe |system.pas |TInterfacedObject |_AddRef |17972[1] | |00646B72|MyApp.exe |uROServer.pas |TROInvoker |HandleMessage |758[1] | |006460C5|MyApp.exe |uROServer.pas | |MainProcessMessage |512[98] | |00645BAC|MyApp.exe |uROServer.pas | |MainProcessMessage |414[0] | |00647184|MyApp.exe |uROServer.pas |TROMessageDispatcher |ProcessMessage |929[2] | |00647130|MyApp.exe |uROServer.pas |TROMessageDispatcher |ProcessMessage |927[0] | |00647BCF|MyApp.exe |uROServer.pas |TROServer |IntDispatchMessage |1328[27] | |00647ABC|MyApp.exe |uROServer.pas |TROServer |IntDispatchMessage |1301[0] | |0064782F|MyApp.exe |uROServer.pas |TROServer |DispatchMessage |1170[11] | |006477B4|MyApp.exe |uROServer.pas |TROServer |DispatchMessage |1159[0] | |006477A9|MyApp.exe |uROServer.pas |TROServer |DispatchMessage |1152[1] | |0064779C|MyApp.exe |uROServer.pas |TROServer |DispatchMessage |1151[0] | |00659CB6|MyApp.exe |uROLocalServer.pas |TROLocalServer |SendRequest |57[1] | |00659CA4|MyApp.exe |uROLocalServer.pas |TROLocalServer |SendRequest |56[0] | |0065A009|MyApp.exe |uROLocalChannel.pas |TROLocalChannel |IntDispatch |99[10] | |005EE540|MyApp.exe |uROClient.pas |TROTransportChannel |Dispatch |1884[36] | |005EE3FC|MyApp.exe |uROClient.pas |TROTransportChannel |Dispatch |1848[0] | |005EEC8F|MyApp.exe |uROClient.pas |TROTransportChannel |Dispatch |2134[27] | |00616EC8|MyApp.exe |PCCS_Intf.pas |TSentrol_Proxy |GetNewValues |6585[7] | |007CBDB9|MyApp.exe |ETAROConnectionForm.pas |TROConnectionForm |SyncSentrolUpdateTimerTimer |855[16] | |7C82ABE5|ntdll.dll | | |RtlTimeToTimeFields | | |004D5D9C|MyApp.exe |Controls.pas |TControl |WndProc |5063[0] | |004DA05B|MyApp.exe |Controls.pas |TWinControl |WndProc |7304[111] | |7C81A3AB|ntdll.dll | | |RtlLeaveCriticalSection | | |0042659C|MyApp.exe |Classes.pas |TThreadList |UnlockList |3359[1] | |00426598|MyApp.exe |Classes.pas |TThreadList |UnlockList |3359[1] | |004935BC|MyApp.exe |Graphics.pas | |FreeMemoryContexts |5060[12] | |00493524|MyApp.exe |Graphics.pas | |FreeMemoryContexts |5048[0] | |004D9799|MyApp.exe |Controls.pas |TWinControl |MainWndProc |7076[6] | |004329F4|MyApp.exe |Classes.pas | |StdWndProc |11583[8] | |7739C09A|USER32.dll | | |CallNextHookEx | | |004B1343|MyApp.exe |ExtCtrls.pas |TTimer |Timer |2281[1] | |00404A30|MyApp.exe |system.pas | |_CallDynaInst |9159[1] | |004B1227|MyApp.exe |ExtCtrls.pas |TTimer |WndProc |2239[4] | |004329F4|MyApp.exe |Classes.pas | |StdWndProc |11583[8] | |7739C42C|USER32.dll | | |GetParent | | |7739C45C|USER32.dll | | |GetParent | | |773A16E0|USER32.dll | | |DispatchMessageA | | |773A16D6|USER32.dll | | |DispatchMessageA | | |004CC234|MyApp.exe |Forms.pas |TApplication |ProcessMessage |8105[23] | |004CC138|MyApp.exe |Forms.pas |TApplication |ProcessMessage |8082[0] | |004CC26E|MyApp.exe |Forms.pas |TApplication |HandleMessage |8124[1] | |004CC264|MyApp.exe |Forms.pas |TApplication |HandleMessage |8123[0] | |004CC563|MyApp.exe |Forms.pas |TApplication |Run |8223[20] | |004CC4B0|MyApp.exe |Forms.pas |TApplication |Run |8203[0] | |007F18B3|MyApp.exe |MyApp.dpr | | |215[65] | The stack trace seems to be ok until first TTimer call, after that it contains some garbage(?), however the end contains the the lock which seems be holding the main thread. Can I trust this stack trace? If not, what can cause this and how I can avoid it? Any ideas about the dead lock based on this stack trace? I don't quite understand how creating a datamodule can dead lock.. I'm using Delphi 2007.

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  • multiple-inheritance substitution

    - by Luigi
    I want to write a module (framework specific), that would wrap and extend Facebook PHP-sdk (https://github.com/facebook/php-sdk/). My problem is - how to organize classes, in a nice way. So getting into details - Facebook PHP-sdk consists of two classes: BaseFacebook - abstract class with all the stuff sdk does Facebook - extends BaseFacebook, and implements parent abstract persistance-related methods with default session usage Now I have some functionality to add: Facebook class substitution, integrated with framework session class shorthand methods, that run api calls, I use mostly (through BaseFacebook::api()), authorization methods, so i don't have to rewrite this logic every time, configuration, sucked up from framework classes, insted of passed as params caching, integrated with framework cache module I know something has gone very wrong, because I have too much inheritance that doesn't look very normal.Wrapping everything in one "complex extension" class also seems too much. I think I should have few working togheter classes - but i get into problems like: if cache class doesn't really extend and override BaseFacebook::api() method - shorthand and authentication classes won't be able to use the caching. Maybe some kind of a pattern would be right in here? How would you organize these classes and their dependencies? EDIT 04.07.2012 Bits of code, related to the topic: This is how the base class of Facebook PHP-sdk: abstract class BaseFacebook { // ... some methods public function api(/* polymorphic */) { // ... method, that makes api calls } public function getUser() { // ... tries to get user id from session } // ... other methods abstract protected function setPersistentData($key, $value); abstract protected function getPersistentData($key, $default = false); // ... few more abstract methods } Normaly Facebook class extends it, and impelements those abstract methods. I replaced it with my substitude - Facebook_Session class: class Facebook_Session extends BaseFacebook { protected function setPersistentData($key, $value) { // ... method body } protected function getPersistentData($key, $default = false) { // ... method body } // ... implementation of other abstract functions from BaseFacebook } Ok, then I extend this more with shorthand methods and configuration variables: class Facebook_Custom extends Facebook_Session { public funtion __construct() { // ... call parent's constructor with parameters from framework config } public function api_batch() { // ... a wrapper for parent's api() method return $this->api('/?batch=' . json_encode($calls), 'POST'); } public function redirect_to_auth_dialog() { // method body } // ... more methods like this, for common queries / authorization } I'm not sure, if this isn't too much for a single class ( authorization / shorthand methods / configuration). Then there comes another extending layer - cache: class Facebook_Cache extends Facebook_Custom { public function api() { $cache_file_identifier = $this->getUser(); if(/* cache_file_identifier is not null and found a valid file with cached query result */) { // return the result } else { try { // call Facebook_Custom::api, cache and return the result } catch(FacebookApiException $e) { // if Access Token is expired force refreshing it parent::redirect_to_auth_dialog(); } } } // .. some other stuff related to caching } Now this pretty much works. New instance of Facebook_Cache gives me all the functionality. Shorthand methods from Facebook_Custom use caching, because Facebook_Cache overwrited api() method. But here is what is bothering me: I think it's too much inheritance. It's all very tight coupled - like look how i had to specify 'Facebook_Custom::api' instead of 'parent:api', to avoid api() method loop on Facebook_Cache class extending. Overall mess and ugliness. So again, this works but I'm just asking about patterns / ways of doing this in a cleaner and smarter way.

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  • Eclipse (STS), Maven and maven-minify-plugin, can they work together?

    - by CodeReaper
    Hi, I am working on a project where I am in charge of html, css and javascript. I found this maven-minify-plugin that seemed to just what I wanted. Everything is good when I deploy using maven on the server, but when I am using Eclipse (STS, www.springsource.com/products/sts) to run the project on localhost no css nor js file is generated by the plugin. Does anyone have experience with this Maven plugin, so they can tell me if it should be possible or not run on localhost? Does anyone have knowledge of another plugin I can use to (combine and) minify javascript and css files when running on localhost in Eclipse and also when deploying using Maven? Any help appreciated... ----extra information---- I basicly just copied in what it said on the plugin webpage, so I have these bits in my pom.xml: .... <build> <plugins> .... <plugin> <groupId>com.samaxes.maven</groupId> <artifactId>maven-minify-plugin</artifactId> <version>1.1</version> <executions> <execution> <id>default-minify</id> <phase>process-resources</phase> <configuration> <cssFiles> .... <param>forms.css</param> <param>jquery.droppy.css</param> <param>jquery.jgrowl.css</param> </cssFiles> <jsFiles> .... <param>jquery.droppy.js</param> <param>jquery.jgrowl.js</param> </jsFiles> <jsFinalFile>script.js</jsFinalFile> <linebreak>-1</linebreak> <nomunge>false</nomunge> <verbose>false</verbose> <preserveAllSemiColons>false</preserveAllSemiColons> <disableOptimizations>false</disableOptimizations> <bufferSize>4096</bufferSize> </configuration> <goals> <goal>minify</goal> </goals> </execution> </executions> </plugin> </plugins> </build> .... Should/Can I bind the plugin to a difference phase? I just use mvn clean package and move the snapshot into tomcat to deploy on the server. I am unsure on how to explain how I run the webapp on localhost, but here goes. I have a vanilia tomcat, that I defined as a server in Eclipse and then defined that the webapp should always build in that "server".

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  • Slow Jquery Animation

    - by Pyronaut
    I have this webpage : http://miloarc.pyrogenicmedia.com/ Which atm is nothing special. It has a few effects but none that break the bank. If you mouse over a tile, it should change it's opacity to give it a fade effect. This is done through the Jquery Animation, not through CSS (I do this so it can fade, instead of being a straight change). Everything looks nice when the page loads, and the fades look perfect. Infact if you drag your mouse all over the place, if gives you a "trail" almost like a snake. Anyway, My next problem is that you will see there is a box in the top left, which is going to tell you information about the tile you are hovering over. This seems to work fine. When you mouse over that information box, it switches it's position (So that you can reach the tiles that were previously hidden underneath it). From my understanding, this is all working fine, and to the letter. However, After one move of the info box (One hover). Viewing the page in Firefox turns slugish. As in, after a successful move of the info box, the fade effects become very stuttered, and it doesn't pick up events as fast meaning you can't draw a "trail" on the screen. Chrome doesn't have this issue. It seems to work fine no matter what. Safari also seems ok. Although I do notice if I move my mouse really fast, it does jump a bit but not as much as firefox. Internet explorer doesn't work at all. Seems to crash the browser... And there is an error with the rounded corner plugin im using (Not sure why...). All in all, I think whatever I'm doing inside my code must be heavily sluggish. But I don't know where it is happening. Here is the full code, but I would advise go to the link to view everything. <script type="text/javascript"> $(document).ready(function() { var WindowWidth = $(window).width(); var WindowMod = WindowWidth % 20; var WindowWidth = WindowWidth - WindowMod; var BoxDimension = WindowWidth / 20; var BoxDimensionFixed = BoxDimension - 12; var dimensions = BoxDimensionFixed + 'px'; $('.gamebutton').each(function(i) { $(this).css('width', dimensions); $(this).css('height', dimensions); }); var OuterDivHeight = BoxDimension * 10; var TopMargin = ($(window).height() - OuterDivHeight) / 2; var OuterDivWidth = BoxDimension * 20; var LeftMargin = ($(window).width() - OuterDivWidth) / 2; $('#gamePort').css('margin-top', TopMargin).css('margin-left', LeftMargin).css('margin-right', LeftMargin); $('.gamebutton img').each(function(i) { $(this).hover( function () { $(this).animate({'opacity': 0.65}); }, function () { $(this).animate({'opacity': 1}); } ); }); $('.rounded').corners(); $('.gamebutton').each(function(i) { $(this).hover(function() { $('.gameTitlePopup').html($(this).attr('title')); FadeActive(); }); }); function FadeActive() { $('.activeInfo').fadeIn('slow'); } $('#gameInfoLeft').hover(function() { $(this).removeClass('activeInfo'); $(this).fadeOut('slow', function() { $('#gameInfoRight').addClass('activeInfo'); FadeActive(); }); }); $('#gameInfoRight').hover(function() { $(this).removeClass('activeInfo'); $(this).fadeOut('slow', function() { $('#gameInfoLeft').addClass('activeInfo'); FadeActive(); }); }); }); </script> Thanks for any help :).

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  • when importing multiple javascript files the javascript seems to break

    - by waywardmd
    I am trying to incorperate several different js files into one page. For some reason though whichever ones are first, seem to break. Here is the code I am using: <link href="inc/css/style.css" rel="stylesheet" type="text/css" /> <link rel="stylesheet" href="inc/css/lightbox.css" type="text/css" media="screen" /> <script type="text/javascript" src="inc/js/prototype.js"></script> <script type="text/javascript" src="inc/js/scriptaculous.js?load=effects"></script> <script type="text/javascript" src="inc/js/lightbox.js"></script> <script type="text/javascript"> <!-- function MM_swapImgRestore() { //v3.0 var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc; } function MM_preloadImages() { //v3.0 var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array(); var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++) if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}} } function MM_findObj(n, d) { //v4.01 var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) { d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);} if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n]; for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); if(!x && d.getElementById) x=d.getElementById(n); return x; } function MM_swapImage() { //v3.0 var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3) if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];} } </script> <script type="text/javascript" src="inc/js/jquery-1.3.2.min.js"></script> <script type="text/javascript" src="inc/js/jquery.slideshow.lite-0.4.js"></script> <script type="text/javascript" charset="utf-8"> $(document).ready(function(){ $("#slideshow2").slideshow({ pauseSeconds: 6, height: 196 }); }); </script> The first files are used for a lightbox and other functions and the second ones are used for a slideshow. Depending on the order one or the other will work, but never both at the same time. What am I doing wrong? Any help is greatly appreciated, thanks.

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  • Make interchangeable class types via pointer casting only, without having to allocate any new objects?

    - by HostileFork
    UPDATE: I do appreciate "don't want that, want this instead" suggestions. They are useful, especially when provided in context of the motivating scenario. Still...regardless of goodness/badness, I've become curious to find a hard-and-fast "yes that can be done legally in C++11" vs "no it is not possible to do something like that". I want to "alias" an object pointer as another type, for the sole purpose of adding some helper methods. The alias cannot add data members to the underlying class (in fact, the more I can prevent that from happening the better!) All aliases are equally applicable to any object of this type...it's just helpful if the type system can hint which alias is likely the most appropriate. There should be no information about any specific alias that is ever encoded in the underlying object. Hence, I feel like you should be able to "cheat" the type system and just let it be an annotation...checked at compile time, but ultimately irrelevant to the runtime casting. Something along these lines: Node<AccessorFoo>* fooPtr = Node<AccessorFoo>::createViaFactory(); Node<AccessorBar>* barPtr = reinterpret_cast< Node<AccessorBar>* >(fooPtr); Under the hood, the factory method is actually making a NodeBase class, and then using a similar reinterpret_cast to return it as a Node<AccessorFoo>*. The easy way to avoid this is to make these lightweight classes that wrap nodes and are passed around by value. Thus you don't need casting, just Accessor classes that take the node handle to wrap in their constructor: AccessorFoo foo (NodeBase::createViaFactory()); AccessorBar bar (foo.getNode()); But if I don't have to pay for all that, I don't want to. That would involve--for instance--making a special accessor type for each sort of wrapped pointer (AccessorFooShared, AccessorFooUnique, AccessorFooWeak, etc.) Having these typed pointers being aliased for one single pointer-based object identity is preferable, and provides a nice orthogonality. So back to that original question: Node<AccessorFoo>* fooPtr = Node<AccessorFoo>::createViaFactory(); Node<AccessorBar>* barPtr = reinterpret_cast< Node<AccessorBar>* >(fooPtr); Seems like there would be some way to do this that might be ugly but not "break the rules". According to ISO14882:2011(e) 5.2.10-7: An object pointer can be explicitly converted to an object pointer of a different type.70 When a prvalue v of type "pointer to T1" is converted to the type "pointer to cv T2", the result is static_cast(static_cast(v)) if both T1 and T2 are standard-layout types (3.9) and the alignment requirements of T2 are no stricter than those of T1, or if either type is void. Converting a prvalue of type "pointer to T1" to the type "pointer to T2" (where T1 and T2 are object types and where the alignment requirements of T2 are no stricter than those of T1) and back to its original type yields the original pointer value. The result of any other such pointer conversion is unspecified. Drilling into the definition of a "standard-layout class", we find: has no non-static data members of type non-standard-layout-class (or array of such types) or reference, and has no virtual functions (10.3) and no virtual base classes (10.1), and has the same access control (clause 11) for all non-static data members, and has no non-standard-layout base classes, and either has no non-static data member in the most-derived class and at most one base class with non-static data members, or has no base classes with non-static data members, and has no base classes of the same type as the first non-static data member. Sounds like working with something like this would tie my hands a bit with no virtual methods in the accessors or the node. Yet C++11 apparently has std::is_standard_layout to keep things checked. Can this be done safely? Appears to work in gcc-4.7, but I'd like to be sure I'm not invoking undefined behavior.

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  • GWB | First Blogger Suggestion - More Customization To Skins

    - by Geekswithblogs Administrator
    The first suggested item (and only at this point) was a higher level of skin customization on Geekswithblogs.net. Currently we have over 10 skins to pick from and the ability to change the CSS for those skins. In the skins list, you will find one labeled Naked that doesn't add any formatting, but allows you to define what items look like and what gets displayed. I understand our skin approach is not good by any means and needs a dramatic update. Here is what we came up with in our conversation with the blogger. Better tools for editing CSS from the serverPreview of changes before publishingRetrievable CSS configurations for different custom themesBetter image upload for use of custom themesMore skins selectionUpdated current skins to fix formatting issues with newer browsers and Firefox/Opera/ChromeI would really like to gauge your feedback on these items to see what is important. I know one of my biggest complaints I get is customizable themes, but typically users don't know about the options so we have done a bad job of explaining what is possible and showing every user how to do so. We have a public tutorial system we once tried and wanted it to be member managed as well and the GWB staff contributing, but that went downhill at some point. Maybe it is time to kick that back into gear for the new bloggers we have added over the past couple of years.What do you think? What else is on your mind?

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  • Creating HTML5 Offline Web Applications with ASP.NET

    - by Stephen Walther
    The goal of this blog entry is to describe how you can create HTML5 Offline Web Applications when building ASP.NET web applications. I describe the method that I used to create an offline Web application when building the JavaScript Reference application. You can read about the HTML5 Offline Web Application standard by visiting the following links: Offline Web Applications Firefox Offline Web Applications Safari Offline Web Applications Currently, the HTML5 Offline Web Applications feature works with all modern browsers with one important exception. You can use Offline Web Applications with Firefox, Chrome, and Safari (including iPhone Safari). Unfortunately, however, Internet Explorer does not support Offline Web Applications (not even IE 9). Why Build an HTML5 Offline Web Application? The official reason to build an Offline Web Application is so that you do not need to be connected to the Internet to use it. For example, you can use the JavaScript Reference Application when flying in an airplane, riding a subway, or hiding in a cave in Borneo. The JavaScript Reference Application works great on my iPhone even when I am completely disconnected from any network. The following screenshot shows the JavaScript Reference Application running on my iPhone when airplane mode is enabled (notice the little orange airplane):   Admittedly, it is becoming increasingly difficult to find locations where you can’t get Internet access. A second, and possibly better, reason to create Offline Web Applications is speed. An Offline Web Application must be downloaded only once. After it gets downloaded, all of the files required by your Web application (HTML, CSS, JavaScript, Image) are stored persistently on your computer. Think of Offline Web Applications as providing you with a super browser cache. Normally, when you cache files in a browser, the files are cached on a file-by-file basis. For each HTML, CSS, image, or JavaScript file, you specify how long the file should remain in the cache by setting cache headers. Unlike the normal browser caching mechanism, the HTML5 Offline Web Application cache is used to specify a caching policy for an entire set of files. You use a manifest file to list the files that you want to cache and these files are cached until the manifest is changed. Another advantage of using the HTML5 offline cache is that the HTML5 standard supports several JavaScript events and methods related to the offline cache. For example, you can be notified in your JavaScript code whenever the offline application has been updated. You can use JavaScript methods, such as the ApplicationCache.update() method, to update the cache programmatically. Creating the Manifest File The HTML5 Offline Cache uses a manifest file to determine the files that get cached. Here’s what the manifest file looks like for the JavaScript Reference application: CACHE MANIFEST # v30 Default.aspx # Standard Script Libraries Scripts/jquery-1.4.4.min.js Scripts/jquery-ui-1.8.7.custom.min.js Scripts/jquery.tmpl.min.js Scripts/json2.js # App Scripts App_Scripts/combine.js App_Scripts/combine.debug.js # Content (CSS & images) Content/default.css Content/logo.png Content/ui-lightness/jquery-ui-1.8.7.custom.css Content/ui-lightness/images/ui-bg_glass_65_ffffff_1x400.png Content/ui-lightness/images/ui-bg_glass_100_f6f6f6_1x400.png Content/ui-lightness/images/ui-bg_highlight-soft_100_eeeeee_1x100.png Content/ui-lightness/images/ui-icons_222222_256x240.png Content/ui-lightness/images/ui-bg_glass_100_fdf5ce_1x400.png Content/ui-lightness/images/ui-bg_diagonals-thick_20_666666_40x40.png Content/ui-lightness/images/ui-bg_gloss-wave_35_f6a828_500x100.png Content/ui-lightness/images/ui-icons_ffffff_256x240.png Content/ui-lightness/images/ui-icons_ef8c08_256x240.png Content/browsers/c8.png Content/browsers/es3.png Content/browsers/es5.png Content/browsers/ff3_6.png Content/browsers/ie8.png Content/browsers/ie9.png Content/browsers/sf5.png NETWORK: Services/EntryService.svc http://superexpert.com/resources/JavaScriptReference/ A Cache Manifest file always starts with the line of text Cache Manifest. In the manifest above, all of the CSS, image, and JavaScript files required by the JavaScript Reference application are listed. For example, the Default.aspx ASP.NET page, jQuery library, JQuery UI library, and several images are listed. Notice that you can add comments to a manifest by starting a line with the hash character (#). I use comments in the manifest above to group JavaScript and image files. Finally, notice that there is a NETWORK: section of the manifest. You list any file that you do not want to cache (any file that requires network access) in this section. In the manifest above, the NETWORK: section includes the URL for a WCF Service named EntryService.svc. This service is called to get the JavaScript entries displayed by the JavaScript Reference. There are two important things that you need to be aware of when using a manifest file. First, all relative URLs listed in a manifest are resolved relative to the manifest file. The URLs listed in the manifest above are all resolved relative to the root of the application because the manifest file is located in the application root. Second, whenever you make a change to the manifest file, browsers will download all of the files contained in the manifest (all of them). For example, if you add a new file to the manifest then any browser that supports the Offline Cache standard will detect the change in the manifest and download all of the files listed in the manifest automatically. If you make changes to files in the manifest (for example, modify a JavaScript file) then you need to make a change in the manifest file in order for the new version of the file to be downloaded. The standard way of updating a manifest file is to include a comment with a version number. The manifest above includes a # v30 comment. If you make a change to a file then you need to modify the comment to be # v31 in order for the new file to be downloaded. When Are Updated Files Downloaded? When you make changes to a manifest, the changes are not reflected the very next time you open the offline application in your web browser. Your web browser will download the updated files in the background. This can be very confusing when you are working with JavaScript files. If you make a change to a JavaScript file, and you have cached the application offline, then the changes to the JavaScript file won’t appear when you reload the application. The HTML5 standard includes new JavaScript events and methods that you can use to track changes and make changes to the Application Cache. You can use the ApplicationCache.update() method to initiate an update to the application cache and you can use the ApplicationCache.swapCache() method to switch to the latest version of a cached application. My heartfelt recommendation is that you do not enable your application for offline storage until after you finish writing your application code. Otherwise, debugging the application can become a very confusing experience. Offline Web Applications versus Local Storage Be careful to not confuse the HTML5 Offline Web Application feature and HTML5 Local Storage (aka DOM storage) feature. The JavaScript Reference Application uses both features. HTML5 Local Storage enables you to store key/value pairs persistently. Think of Local Storage as a super cookie. I describe how the JavaScript Reference Application uses Local Storage to store the database of JavaScript entries in a separate blog entry. Offline Web Applications enable you to store static files persistently. Think of Offline Web Applications as a super cache. Creating a Manifest File in an ASP.NET Application A manifest file must be served with the MIME type text/cache-manifest. In order to serve the JavaScript Reference manifest with the proper MIME type, I added two files to the JavaScript Reference Application project: Manifest.txt – This text file contains the actual manifest file. Manifest.ashx – This generic handler sends the Manifest.txt file with the MIME type text/cache-manifest. Here’s the code for the generic handler: using System.Web; namespace JavaScriptReference { public class Manifest : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/cache-manifest"; context.Response.WriteFile(context.Server.MapPath("Manifest.txt")); } public bool IsReusable { get { return false; } } } } The Default.aspx file contains a reference to the manifest. The opening HTML tag in the Default.aspx file looks like this: <html manifest="Manifest.ashx"> Notice that the HTML tag contains a manifest attribute that points to the Manifest.ashx generic handler. Internet Explorer simply ignores this attribute. Every other modern browser will download the manifest when the Default.aspx page is requested. Seeing the Offline Web Application in Action The experience of using an HTML5 Web Application is different with different browsers. When you first open the JavaScript Reference application with Firefox, you get the following warning: Notice that you are provided with the choice of whether you want to use the application offline or not. Browsers other than Firefox, such as Chrome and Safari, do not provide you with this choice. Chrome and Safari will create an offline cache automatically. If you click the Allow button then Firefox will download all of the files listed in the manifest. You can view the files contained in the Firefox offline application cache by typing about:cache in the Firefox address bar: You can view the actual items being cached by clicking the List Cache Entries link: The Offline Web Application experience is different in the case of Google Chrome. You can view the entries in the offline cache by opening the Developer Tools (hit Shift+CTRL+I), selecting the Storage tab, and selecting Application Cache: Notice that you view the status of the Application Cache. In the screen shot above, the status is UNCACHED which means that the files listed in the manifest have not been downloaded and cached yet. The different possible values for the status are included in the HTML5 Offline Web Application standard: UNCACHED – The Application Cache has not been initialized. IDLE – The Application Cache is not currently being updated. CHECKING – The Application Cache is being fetched and checked for updates. DOWNLOADING – The files in the Application Cache are being updated. UPDATEREADY – There is a new version of the Application. OBSOLETE – The contents of the Application Cache are obsolete. Summary In this blog entry, I provided a description of how you can use the HTML5 Offline Web Application feature in the context of an ASP.NET application. I described how this feature is used with the JavaScript Reference Application to store the entire application on a user’s computer. By taking advantage of this new feature of the HTML5 standard, you can improve the performance of your ASP.NET web applications by requiring users of your web application to download your application once and only once. Furthermore, you can enable users to take advantage of your applications anywhere -- regardless of whether or not they are connected to the Internet.

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  • LLBLGen Pro and JSON serialization

    - by FransBouma
    I accidentally removed a reply from my previous blogpost, and as this blog-engine here at weblogs.asp.net is apparently falling apart, I can't re-add it as it thought it would be wise to disable comment controls on all posts, except new ones. So I'll post the reply here as a quote and reply on it. 'Steven' asks: What would the future be for LLBLGen Pro to support JSON for serialization? Would it be worth the effort for a LLBLGenPro user to bother creating some code templates to produce additional JSON serializable classes? Or just create some basic POCO classes which could be used for exchange of client/server data and use DTO to map these back to LLBGenPro ones? If I understand the work around, it is at the expense of losing xml serialization. Well, as described in the previous post, to enable JSON serialization, you can do that with a couple of lines and some attribute assignments. However, indeed, the attributes might make the XML serialization not working, as described in the previous blogpost. This is the case if the service you're using serializes objects using the DataContract serializer: this serializer will give up to serialize the entity objects to XML as the entity objects implement IXmlSerializable and this is a no-go area for the DataContract serializer. However, if your service doesn't use a DataContract serializer, or you serialize the objects manually to Xml using an xml serializer, you're fine. When you want to switch to Xml serializing again, instead of JSON in WebApi, and you have decorated the entity classes with the data-contract attributes, you can switch off the DataContract serializer, by setting a global configuration setting: var xml = GlobalConfiguration.Configuration.Formatters.XmlFormatter; xml.UseXmlSerializer = true; This will make the WebApi use the XmlSerializer, and run the normal IXmlSerializable interface implementation.

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