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  • Start Line with (New... in VB.net

    - by pedro_cesar
    Hello; Why can't I start a line using a parenthesis followed by the keyword new?? For example: (New <custom_obj>).foo(var) In that case is obvious that I'm trying to avoid creating a named instance of the the <custom_obj> because I know that I'll only be using it at that sentence. Note that actually creating a named instance is not a problem for me... I just wanna know the reason why this is not possible.

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  • Does LearnDevNow offers a useful subscription for .NET related training : with video and text reference material?

    - by user766926
    Does LearnDevNow offers a useful subscription for .NET video and text reference training material or to learn .NET? I could not find a review of www.learnnowonline.com/learndevnow I've been doing research about places that offer .NET / ASP.NET / C# / LINQ / SQL / JQuery video training that provide excellent material for developers. Kind of like a Lynda.com for back end development. However, I have not find one place that offers quality material that is easily accessible for the user, and that is priced competitive. This is what I'm looking for: Online Video tutorials with free future updates (videos that can be accessed on any device ie: android portable devices, mac / ipad, linux machines) Printable courseware (ie PDFs so that you can take notes, print if necessary, and read in a tablet in case you don;t have internet access) labs, and easy to access code Pre/Post Assessments/Exams for each training to keep track of your progress and what you have learned/skills. (Appdev used to offer this but it was way too expensive (thousands for each training ie 1k for each. I paid about five thousand at Appdev, and now I regret that purchase), and after a few years/months the training became obsolete - outdated) I looked at learnnowonline.com/learndevnow but it seems that their courseware / text reference material can only be accessed online, and don't know if their videos work in all mobile devices, and browsers (Safari, Chrome, IE, Opera, Firefox) Also, it seems Appdev not longer exist and now is called " AppDev is now LearnNowPlus : www.learnnowonline.com/appdev That site not longer offers prices. I tried to find reviews but could not find any. Does anyone know, or can share a review about some of these type of online training service providers? I would appreciate your feedback on this, and if you can share your past experiences with their service or similar/better services that would even be better. Thanks.

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  • C# 5 Async, Part 3: Preparing Existing code For Await

    - by Reed
    While the Visual Studio Async CTP provides a fantastic model for asynchronous programming, it requires code to be implemented in terms of Task and Task<T>.  The CTP adds support for Task-based asynchrony to the .NET Framework methods, and promises to have these implemented directly in the framework in the future.  However, existing code outside the framework will need to be converted to using the Task class prior to being usable via the CTP. Wrapping existing asynchronous code into a Task or Task<T> is, thankfully, fairly straightforward.  There are two main approaches to this. Code written using the Asynchronous Programming Model (APM) is very easy to convert to using Task<T>.  The TaskFactory class provides the tools to directly convert APM code into a method returning a Task<T>.  This is done via the FromAsync method.  This method takes the BeginOperation and EndOperation methods, as well as any parameters and state objects as arguments, and returns a Task<T> directly. For example, we could easily convert the WebRequest BeginGetResponse and EndGetResponse methods into a method which returns a Task<WebResponse> via: Task<WebResponse> task = Task.Factory .FromAsync<WebResponse>( request.BeginGetResponse, request.EndGetResponse, null); .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Event-based Asynchronous Pattern (EAP) code can also be wrapped into a Task<T>, though this requires a bit more effort than the one line of code above.  This is handled via the TaskCompletionSource<T> class.  MSDN provides a detailed example of using this to wrap an EAP operation into a method returning Task<T>.  It demonstrates handling cancellation and exception handling as well as the basic operation of the asynchronous method itself. The basic form of this operation is typically: Task<YourResult> GetResultAsync() { var tcs = new TaskCompletionSource<YourResult>(); // Handle the event, and setup the task results... this.GetResultCompleted += (o,e) => { if (e.Error != null) tcs.TrySetException(e.Error); else if (e.Cancelled) tcs.TrySetCanceled(); else tcs.TrySetResult(e.Result); }; // Call the asynchronous method this.GetResult(); // Return the task from the TaskCompletionSource return tcs.Task; } We can easily use these methods to wrap our own code into a method that returns a Task<T>.  Existing libraries which cannot be edited can be extended via Extension methods.  The CTP uses this technique to add appropriate methods throughout the framework. The suggested naming for these methods is to define these methods as “Task<YourResult> YourClass.YourOperationAsync(…)”.  However, this naming often conflicts with the default naming of the EAP.  If this is the case, the CTP has standardized on using “Task<YourResult> YourClass.YourOperationTaskAsync(…)”. Once we’ve wrapped all of our existing code into operations that return Task<T>, we can begin investigating how the Async CTP can be used with our own code.

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  • ConcurrentDictionary<TKey,TValue> used with Lazy<T>

    - by Reed
    In a recent thread on the MSDN forum for the TPL, Stephen Toub suggested mixing ConcurrentDictionary<T,U> with Lazy<T>.  This provides a fantastic model for creating a thread safe dictionary of values where the construction of the value type is expensive.  This is an incredibly useful pattern for many operations, such as value caches. The ConcurrentDictionary<TKey, TValue> class was added in .NET 4, and provides a thread-safe, lock free collection of key value pairs.  While this is a fantastic replacement for Dictionary<TKey, TValue>, it has a potential flaw when used with values where construction of the value class is expensive. The typical way this is used is to call a method such as GetOrAdd to fetch or add a value to the dictionary.  It handles all of the thread safety for you, but as a result, if two threads call this simultaneously, two instances of TValue can easily be constructed. If TValue is very expensive to construct, or worse, has side effects if constructed too often, this is less than desirable.  While you can easily work around this with locking, Stephen Toub provided a very clever alternative – using Lazy<TValue> as the value in the dictionary instead. This looks like the following.  Instead of calling: MyValue value = dictionary.GetOrAdd( key, () => new MyValue(key)); .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } We would instead use a ConcurrentDictionary<TKey, Lazy<TValue>>, and write: MyValue value = dictionary.GetOrAdd( key, () => new Lazy<MyValue>( () => new MyValue(key))) .Value; This simple change dramatically changes how the operation works.  Now, if two threads call this simultaneously, instead of constructing two MyValue instances, we construct two Lazy<MyValue> instances. However, the Lazy<T> class is very cheap to construct.  Unlike “MyValue”, we can safely afford to construct this twice and “throw away” one of the instances. We then call Lazy<T>.Value at the end to fetch our “MyValue” instance.  At this point, GetOrAdd will always return the same instance of Lazy<MyValue>.  Since Lazy<T> doesn’t construct the MyValue instance until requested, the actual MyClass instance returned is only constructed once.

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  • ASP.Net application can no longer write to DB after having run out of disk space

    - by remi.despres-smyth
    I'm a software developer troubleshooting a sticky problem on a client's production server, and I've got a bit of a problem. They have a virtual server running Windows Server 2008, SQL Server 2008 R1 and IIS7. It was provisioned with two partitions: one that has the OS (~15 Gig), and the other has IIS' web sites (another ~15 Gig). My application that's running this server has been running perfectly well, up until about an hour ago, when it started throwing System.IO.IOException: "There is not enough space on disk". As soon as my client notified me, I cleared up some space on C:\, emptied the recycle bin, and restarted SQL Server and IIS. The web server came back up and the application was running, but it no longer saves information to the database. No error message is coming up, the application can get information out of the DB, but it can no longer save data back to it. I rebooted the server, to no effect. I spoke with a sys admin at the hosting company, and he says SQL Server appears to have come up fine and the database is not in read-only mode. I confirmed that, as I can add records to tables from SQL Server Management Studio. I looked at the event log immediately after trying to save an edited record in the app, and no new events appear in there that I can tell. I'm assuming this is related to having run out of space, as it was all working fine prior to that, but I'm at a bit of a loss as to what exactly needs a kick in the pants to get going again. Can anyone help me out? What the heck is going on here?

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  • Connection between Asp.Net and Oracle 10g Express Edition

    - by l3gion
    Hello, I'm struggling to find a way to connect my Asp .Net + C# application with my Oracle 10g Express Edition. Here's my scenario, I'm at Mac OS and I have 2 Virtual machines, one for Win 7 (VS 2010 app) and another with a Parallels Virtual Appliance with Oracle 10g Express Edition 1.1. Which provider (Oledb, ODP.NET, etc..) should I use? How to make the connection to the server in C#? Right now I have this: <appSettings> <add key="conn" value="Data Source=10.211.55.11;Persist Security Info=True;User ID=l3gion;Password=l3gion;" /> </appSettings> And at the .cs file: SqlCommand cmd = new SqlCommand("insert_thing", new SqlConnection(ConfigurationManager.AppSettings["conn"])); cmd.CommandType = CommandType.StoredProcedure; *insert_thing is a stored procedure Using this I got this error: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) I've searched for some possible solutions. Tried some, including: firewall disabled, allow remote connection at oracle express edition using this cmd line ("EXEC DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);").. The error persists. Can anyone guide me into the right direction? I'm a newbie with this type of things. Thank you for your patience. regards

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  • Cannot debug views in MVC2 project, getting "The resource cannot be found" error

    - by schefdev
    I'm running Visual Studio 2008 sp1 on Win7, with MVC2 RTM installed. I created a new MVC2 project using the wizard and am unable to debug specific pages. With webforms and even MVC1, I was able to sit on a View page, hit F5, and then have the integrated web server in VS2008 start on the page I was working on. Very handy for building up app logic. When I try this now I get a "The resource cannot be found" error page. I retried this just now with a stock new MVC2 Web Application project. Here are the steps I took after creating the new project to reproduce: Open up project settings. Under the Web subtab, set the Start Action to "Current Page". Leave all the other settings as is. Open one of the views up (e.g. Account/Register.aspx) Hit F5 to debug the project Note that the browser window which displays shows the error message "The resource cannot be found". The link I saw in my browser for this run was: http://localhost:49471/Views/Account/Register.aspx I did some googling and found suggestions related to ensuring all HTTP server pieces were installed. I double checked and made sure that "HTTP Errors" and "HTTP Redirection" were both installed. If I leave the project setting as it was originally, set to "Specific Page" with nothing in the text box, then routing works and I always get the default home page. I'm hoping this isn't the only option. Thanks!

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  • ASP.NET MVC 2 UpdateModel() is not updating values in memory or database

    - by campbelt
    Hello, I am new to MVC, and so am working through the NerdDinner tutorial, here. In particular, I'm running into problems with the use of the UpdateModel method, which is explained in the part five of that tutorial. The problem is, when I try to edit the value of a dinner object using the UpdateModel method, the values do not get updated, and no exceptions are thrown. Oddly, I am not having any trouble with the Create or Delete features that are illustrated in the tutorial. Only the update feature isn't working. Below, I have included the Controller code that I am using, as well as the view markup, which is contained in both an aspx View file and an ascx Partial View file. Here is the code inside my Controller, called DinnerController.cs: // // GET: /Dinners/Edit/2 [Authorize] public ActionResult Edit(int id) { Dinner dinner = dinnerRepository.GetDinner(id); return View(new DinnerFormViewModel(dinner)); } // // POST: /Dinners/Edit/2 [AcceptVerbs(HttpVerbs.Post), Authorize] public ActionResult Edit(int id, FormCollection formValues) { Dinner dinner = dinnerRepository.GetDinner(id); try { UpdateModel(dinner); var x = ViewData.GetModelStateErrors(); // <-- to catch other ModelState errors dinnerRepository.Save(); return RedirectToAction("Details", new { id = dinner.DinnerID }); } catch { ModelState.AddRuleViolations(dinner.GetRuleViolations()); return View(new DinnerFormViewModel(dinner)); } } The line with the comment "to catch other ModelState errors" was added after reading a possible solution from another StackOverflow thread, here: http://stackoverflow.com/questions/1461283/asp-net-mvc-updatemodel-not-updating-but-not-throwing-error Unfortunately, that solution didn't help me. Here is the corresponding markup in my Dinners/Edit.aspx View: <asp:Content ID="Main" ContentPlaceHolderID="MainContent" runat="server"> <h2>Edit Dinner</h2> <% Html.RenderPartial("DinnerForm"); %> </asp:Content> Here is the corresponding markup in my DinnerForm.ascx Partial View. This Partial View file is also used by the Create feature, which is working fine: <%=Html.ValidationSummary("Please correct the errors and try again.") %> <% using (Html.BeginForm()) { %> <fieldset> <p> <label for="Title">Dinner Title:</label> <%=Html.TextBoxFor(model => Model.Dinner.Title)%> <%=Html.ValidationMessage("Title", "*") %> </p> <p> <label for="EventDate">EventDate:</label> <%=Html.TextBoxFor(model => Model.Dinner.EventDate, new { value = String.Format("{0:g}", Model.Dinner.EventDate) })%> <%=Html.ValidationMessage("EventDate", "*") %> </p> <p> <label for="Description">Description:</label> <%=Html.TextBoxFor(model => Model.Dinner.Description)%> <%=Html.ValidationMessage("Description", "*")%> </p> <p> <label for="Address">Address:</label> <%=Html.TextBoxFor(model => Model.Dinner.Address)%> <%=Html.ValidationMessage("Address", "*") %> </p> <p> <label for="Country">Country:</label> <%=Html.DropDownListFor(model => Model.Dinner.Country, Model.Countries)%> <%=Html.ValidationMessage("Country", "*") %> </p> <p> <label for="ContactPhone">ContactPhone #:</label> <%=Html.TextBoxFor(model => Model.Dinner.ContactPhone)%> <%=Html.ValidationMessage("ContactPhone", "*") %> </p> <p> <label for="Latitude">Latitude:</label> <%=Html.TextBoxFor(model => Model.Dinner.Latitude)%> <%=Html.ValidationMessage("Latitude", "*") %> </p> <p> <label for="Longitude">Longitude:</label> <%=Html.TextBoxFor(model => Model.Dinner.Longitude)%> <%=Html.ValidationMessage("Longitude", "*") %> </p> <p> <input type="submit" value="Save"/> </p> </fieldset> <% } %> In any case, I've been hitting away at this for hours, and I'm out of ideas. So, I'm hoping someone here can help nudge me in the right direction, in order to figure out what I'm doing wrong.

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  • Increasing Max Upload File Size on IIS7/Win7 Pro

    - by Jay Querido
    I'm setting up a server for a client (something I don't typically do), and I'm running into issues with uploading larger files (11MB). The server is running Windows 7 Professional with IIS added. In web.config I've tried setting <system.web> <httpRuntime maxRequestLength="65536" /> <!-- 64MB --> </system.web> ... and that doesn't work. I've set <system.webSecurity> <security> <requestFiltering> <requestLimits maxAllowedContentLength="68157440" /> </requestFiltering> </security> </system.webSecurity> ... and that doesn't work either. What am I missing here? As I've said, I don't typically set up servers, so I may be missing something obvious... no suggestion will be scoffed at! Thanks in advance.

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  • MsChart : Partial view error

    - by Poomjai
    Hi I have a problem when i using Mschart on my MVC project, when i use the first index page of project to render for the partial view name index2 the code is <% Html.RenderPartial("Index2"); %> But when i run it the error is occur which the message is CS0029: Cannot implicitly convert type 'ASP.views_home_index2_ascx' to 'System.Web.UI.Page' -it said that the problem line of code is : // Render chart control Line 52: Chart2.Page = this; << At here Line 53: HtmlTextWriter writer = new HtmlTextWriter(Page.Response.Output); Line 54: Chart2.RenderControl(writer); But when i put all of code in Index2.ascx to the index.aspx and not to render the partial view it work fine Code of Index2.ascx is <% System.Web.UI.DataVisualization.Charting.Chart Chart2 = new System.Web.UI.DataVisualization.Charting.Chart(); Chart2.Width = 412; Chart2.Height = 296; Chart2.RenderType = RenderType.ImageTag; Chart2.Palette = ChartColorPalette.BrightPastel; Title t = new Title("No Code Behind Page", Docking.Top, new System.Drawing.Font("Trebuchet MS", 14, System.Drawing.FontStyle.Bold), System.Drawing.Color.FromArgb(26, 59, 105)); Chart2.Titles.Add(t); Chart2.ChartAreas.Add("Series 1"); Chart2.Series.Add("Series 1"); // add points to series 1 Chart2.Series["Series 1"].Points.AddY(3); Chart2.Series["Series 1"].Points.AddY(4); Chart2.Series["Series 1"].Points.AddY(5); Chart2.BorderSkin.SkinStyle = BorderSkinStyle.Emboss; Chart2.BorderColor = System.Drawing.Color.FromArgb(26, 59, 105); Chart2.BorderlineDashStyle = ChartDashStyle.Solid; Chart2.BorderWidth = 2; Chart2.Legends.Add("Legend1"); // Render chart control Chart2.Page = this; HtmlTextWriter writer = new HtmlTextWriter(Page.Response.Output); Chart2.RenderControl(writer); %

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  • Writing files in App_Data causes tempdata to be null

    - by RAMX
    I have a small asp.net MVC 1 web app that can store files and create directories in the App_Data directory. When the write operation succeeds, I add a message to the tempdata and do a redirectToRoute. The problem is that the tempdata is null when the action is executed. If i write the files in a directory outside of the web applications root directory, the tempdata is not null and everything works correctly. Any ideas why writing in the app_data seems to clear the tempdata ? edit: if DRS.Logic.Repository.Manager.CreateFile(path, hpf, comment) writes in the App_Data, TempData will be null in the action being redirected to. if it is a directory out of the web app root it is fine. No exceptions are being thrown. [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(int id, string path, FormCollection form) { ViewData["path"] = path; ViewData["id"] = id; HttpPostedFileBase hpf; string comment = form["FileComment"]; hpf = Request.Files["File"] as HttpPostedFileBase; if (hpf.ContentLength != 0) { DRS.Logic.Repository.Manager.CreateFile(path, hpf, comment); TempData["notification"] = "file was created"; return RedirectToRoute(new { controller = "File", action ="ViewDetails", id = id, path = path + Path.GetFileName(hpf.FileName) }); } else { TempData["notification"] = "No file were selected."; return View(); } }

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  • Install IIS windows 7

    - by rad
    I have tried many way to install IIS in my Windows 7 Professionnel environment. And I have always an error. I tried with Web Plateform Api - "Fatal Error during installation" With Windows Features in configuration pannel - "An error has occurred. Not all of the features were successfully" With command line (http://forums.iis.net/t/1152513.aspx) - "Fatal Error during installation" in log file I have IIS.log : [04/10/2012 16:13:25] "C:\Windows\SysWOW64\inetsrv\aspnetca.exe" /install /basic 2.0.50727.0 [04/10/2012 16:13:25] < !!FAIL!! RegOpenKeyEx(HKLM\SYSTEM\CurrentControlSet\Services\ASP.NET_2.0.50727\Names) result=0x80070002 [04/10/2012 16:13:25] < !!FAIL!! SetAccessToPerfCountersKeys() result=0x80070002 [04/10/2012 16:13:25] < !!FAIL!! Installation failure, result=0x80070002 If I uninstall/reinstall IIS, I have some error but my site run correctly, and after windows restart, the install is rollbacked and I lose my installation. Any help ?

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  • Ubuntu web server cluster checks Ubuntu repository for script updates with cron

    - by StuartTheY
    I have a cluster of Ubuntu 12.04 web servers running a lamp stack. All of these servers are connected to a Load Balancer on Amazon Web Services. What I want to be able to do is have a dedicated Ubuntu server that I can update the PHP files on and have the other web servers check with cron to get the updates files from the repository. They don't have to use cron but that was the only thing I could think of, unless there was a way to have the updated repository tell them that it has updated files. And then how to transfer those files. Also if there is a ways for a server to check for updated files when it boots because I am going to be using auto scaling on AWS so when there is an increase in the load and another server gets created I need it to download the updated files from the repository when launched. Not sure how to transfer files from server to server.

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  • Web based library management (FOSS) application

    - by pgb
    I'm looking for a FOSS web-based library management application. I want to manage the few books we have at our company, and I'm looking for applications that provide a simple web interface to: Add new books. Search for books. (Not Required) Place holds on books. My ideal would be something like Delicious Library, but web based and open source. I've looked at Koha (which I could not install), Emilda, which seems to be a dead project (last emails are from 2006 and I could not install it) and VuFind which looks awesome but doesn't provide (or I could not find) an interface to add new records to the library. Any suggestions?

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  • Locking down a box on the web

    - by glowcoder
    I'm a Java developer who is looking to put a game on the web. I'm not much of a web or server guy, though, and frankly I seem a little lost at where I should start with putting something on the web. My application works fine on my machine, and I'm sure I can make it work fine on any box I put it on. But the security of that box is pretty important. If I sign up for a standard hosting package (let's say from GoDaddy or something) can I simply tell them "make port 12345 open for communication" and let them handle the rest of the security details? If I can't, what are the things I'm going to need to know to prevent my game server from getting hacked to shreds? (Links to solid resources fine by me!) Thanks!

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  • how do web hosting companies host end users domain and give so many public IPs

    - by Registered User
    Hi, I am a Computer Science guy who understands networking very well. But when it comes to Web hosting companies I am clue less. I want to know how do web hosting companies give so many public IPs to so many users and each of them has root login also. How this is technically done that is what I am interested to know. I do not know how you people configure it. In my case if I have to do I will buy a public IP from some one and connect my server to it and at max give some people SSH access to it.In case of Web hosting companies how is it done.

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  • Apache2 graceful restart stops proxying requests to passenger

    - by Rob
    Issue with apache mod proxy, it stops proxying requests after a graceful restart but not all the time. It seems to happen only on a Sunday when a graceful restart is triggered by logrotate. [Sun Sep 9 05:25:06 2012] [notice] SIGUSR1 received. Doing graceful restart [Sun Sep 9 05:25:06 2012] [notice] Apache/2.2.22 (Ubuntu) Phusion_Passenger/3.0.11 configured -- resuming normal operations [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(492) failed in child 26153 for worker proxy:reverse [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(486) failed in child 26153 for worker http://api.myservice.org/api [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(487) failed in child 26153 for worker http://api.myservice.org/editor/$1 [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(489) failed in child 26153 for worker http://api.myservice.org/build [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(490) failed in child 26153 for worker http://api.myservice.org/help [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(491) failed in child 26153 for worker http://api.myservice.org/motd.html [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(480) failed in child 26153 for worker http://api.myservice.org/api [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(481) failed in child 26153 for worker http://api.myservice.org/editor/$1 [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(483) failed in child 26153 for worker http://api.myservice.org/build [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(484) failed in child 26153 for worker http://api.myservice.org/help [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(485) failed in child 26153 for worker http://api.myservice.org/motd.html [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(479) failed in child 26153 for worker http://api.myservice.org/motd.html After these lines, the logs are flooded with 404's because the requests are not being proxied. It's worth noting that the destination is just another vhost on the same apache instance, but the vhost (http://api.myservice.org) is serving passenger (mod_rails) I was thinking that maybe there's some startup issues with the passenger workers not being ready during a graceful restart? After a full restart resolves it and everything returns to normal. //Edit Here's the vhost config, thanks :) <VirtualHost *:80> UseCanonicalName Off LogFormat "%V %h %l %u %t \"%r\" %s %b" vcommon <Directory /var/www/vhosts> RewriteEngine on AllowOverride All </Directory> RewriteEngine on RewriteCond /var/www/vhosts/%{SERVER_NAME} !-d RewriteCond /var/www/vhosts/%{SERVER_NAME} !-l RewriteRule ^ http://sitenotfound.myservice.org/ [R=302,L] VirtualDocumentRoot /var/www/vhosts/%0/current # Rewrite requests to /assets to map to the /var/file-store/<SERVER_NAME>/ RewriteMap lowercase int:tolower RewriteCond %{REQUEST_URI} ^/assets/ RewriteRule ^/assets/(.*)$ /var/file-store/${lowercase:%{SERVER_NAME}}/$1 # Map /login to /editor.html as it's far friendlier. RewriteCond %{REQUEST_URI} ^/login RewriteRule .* /editor.html [PT] # Forward some requests to the API ProxyPass /api http://api.myservice.org/api ProxyPass /site.json http://api.myservice.org/api/editor/site ProxyPassMatch ^/editor/(.*)$ http://api.myservice.org/editor/$1 ProxyPassMatch ^/api/(.*) http://api.myservice.org/api/$1 ProxyPass /build http://api.myservice.org/build ProxyPass /help http://api.myservice.org/help ProxyPass /motd.html http://api.myservice.org/motd.html <Proxy *> Order allow,deny Allow from all </Proxy> # TODO generate slightly more specific Error Documents for 401/403/500's, # but for now the 404 page is good enough ErrorDocument 401 /404.html ErrorDocument 403 /404.html ErrorDocument 404 /404.html ErrorDocument 500 /404.html </VirtualHost>

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  • shared web hosting architecture in a university setting

    - by gaspol
    We're in the process of creating a shared webhosting infrastructure for our university. Departments within the university can host their sites on this infrastructure. We're thinking of setting up multiple, load balanced web servers attached to shared storage (for web content and Apache config files). There will also be database servers behind these web servers. Does anyone have any other suggestions about this? Any recommendations for an alternative setup? Would having cPanel/WHM/Plesk be a good idea to automate account creation/maintenance?

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  • Expression web ftp: Stuck at "Listing subsites"

    - by FrankPython
    When I try to use the Expression Web 4 built-in ftp I see the message ""Listing subsites in.." and soon afterward "passive ftp not available". If I switch to active, I get "active ftp not available". There are no subsites. It is a simple directory with one html page. Backend is a normal IIS6 server. FTP to the same IP with other FTP clients works fine! Any idea if Expression web has some specific requirements? It is our own dedicated server. (Please no tips to use another tool, for this specific project Expression Web is a requirement).

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  • How to use Koala Facebook Graph API?

    - by reko
    I am a Rails newbie. I want to use Koala's Graph API. In my controller @graph = Koala::Facebook::API.new('myFacebookAccessToken') @hello = @graph.get_object("my.Name") When I do this, I get something like this { "id"=>"123456", "name"=>"First Middle Last", "first_name"=>"First", "middle_name"=>"Middle", "last_name"=>"Last", "link"=>"http://www.facebook.com/MyName", "username"=>"my.name", "birthday"=>"12/12/1212", "hometown"=>{"id"=>"115200305133358163", "name"=>"City, State"}, "location"=>{"id"=>"1054648928202133335", "name"=>"City, State"}, "bio"=>"This is my awesome Bio.", "quotes"=>"I am the master of my fate; I am the captain of my soul. - William Ernest Henley\r\n\r\n"Don't go around saying the world owes you a living. The world owes you nothing. It was here first.\" - Mark Twain", "work"=>[{"employer"=>{"id"=>"100751133333", "name"=>"Company1"}, "position"=>{"id"=>"105763693332790962", "name"=>"Position1"}, "start_date"=>"2010-08", "end_date"=>"2011-07"}], "sports"=>[{"id"=>"104019549633137", "name"=>"Sport1"}, {"id"=>"103992339636529", "name"=>"Sport2"}], "favorite_teams"=>[{"id"=>"105467226133353743", "name"=>"Fav1"}, {"id"=>"19031343444432369133", "name"=>"Fav2"}, {"id"=>"98027790139333", "name"=>"Fav3"}, {"id"=>"104055132963393331", "name"=>"Fav4"}, {"id"=>"191744431437533310", "name"=>"Fav5"}], "favorite_athletes"=>[{"id"=>"10836600585799922", "name"=>"Fava1"}, {"id"=>"18995689436787722", "name"=>"Fava2"}, {"id"=>"11156342219404022", "name"=>"Fava4"}, {"id"=>"11169998212279347", "name"=>"Fava5"}, {"id"=>"122326564475039", "name"=>"Fava6"}], "inspirational_people"=>[{"id"=>"16383141733798", "name"=>"Fava7"}, {"id"=>"113529011990793335", "name"=>"fava8"}, {"id"=>"112032333138809855566", "name"=>"Fava9"}, {"id"=>"10810367588423324", "name"=>"Fava10"}], "education"=>[{"school"=>{"id"=>"13478880321332322233663", "name"=>"School1"}, "type"=>"High School", "with"=>[{"id"=>"1401052755", "name"=>"Friend1"}]}, {"school"=>{"id"=>"11482777188037224", "name"=>"School2"}, "year"=>{"id"=>"138383069535219", "name"=>"2005"}, "type"=>"High School"}, {"school"=>{"id"=>"10604484633093514", "name"=>"School3"}, "year"=>{"id"=>"142963519060927", "name"=>"2010"}, "concentration"=>[{"id"=>"10407695629335773", "name"=>"c1"}], "type"=>"College"}, {"school"=>{"id"=>"22030497466330708", "name"=>"School4"}, "degree"=>{"id"=>"19233130157477979", "name"=>"c3"}, "year"=>{"id"=>"201638419856163", "name"=>"2011"}, "type"=>"Graduate School"}], "gender"=>"male", "interested_in"=>["female"], "relationship_status"=>"Single", "religion"=>"Religion1", "political"=>"Political1", "email"=>"[email protected]", "timezone"=>-8, "locale"=>"en_US", "languages"=>[{"id"=>"10605952233759137", "name"=>"English"}, {"id"=>"10337617475934611", "name"=>"L2"}, {"id"=>"11296944428713061", "name"=>"L3"}], "verified"=>true, "updated_time"=>"2012-02-24T04:18:05+0000" } How do I show this entire hash in the view in a good format? This is what I did from what ever I learnt.. In my view <% @hello.each do |key, value| %> <li><%=h "#{key.to_s} : #{value.to_s}" %></li> <% end %> This will get the entire thing converted to a list... It works awesome if its just one key.. but how to work with multiple keys and show only the information... something like when it outputs hometown : City, State rather than something like hometown : {"id"=>"115200305133358163", "name"=>"City, State"} Also for education if I just say education[school][name] to display list of schools attended? The error i get is can't convert String into Integer I also tried to do this in my controller, but I get the same error.. @fav_teams = @hello["favorite_teams"]["name"] Also, how can I save all these to the database.. something like just the list of all schools.. not their id no's? Update: The way I plan to save to my database is.. lets say for a user model, i want to save to database as :facebook_id, :facebook_name, :facebook_firstname, ...., :facebook_hometown .. here I only want to save name... when it comes to education.. I want to save.. school, concentration and type.. I have no idea on how to achieve this.. Looking forward for help! thanks!

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  • How to get fully qualified path of css file?

    - by Malcolm
    Hi, In ASP.NET MVC how do I get the fully qualified path to my css file by specifying the relative path. Eg Url.Content("~/Content/Print.css") This returns eg "/Content/Print.css" Where as I want http://www.mysite.com/Content/Printcss Understand the issue? Malcolm

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  • how create a Controller partial class to override OnAuthorization?

    - by kaijk
    I'm trying to change the method OnAuthorization, so that it is available for any application ... this way: public partial class Controller { protected override void OnAuthorization(AuthorizationContext filterContext) { if ((string)(filterContext.RouteData.Values["action"]) == "test") { filterContext.Result = new HttpUnauthorizedResult(); } } } but is showing the compilation error: ...Controller.OnAuthorization(System.Web.Mvc.AuthorizationContext)': no suitable method found to override can someone help me?

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  • getting london gold price from web service

    - by user117853
    hi all i'm trying to access the gold price info through this web service: http://www.webservicex.net/LondonGoldFix.asmx but it always return false to in the result here is my code after I adding the service net.webservicex.www.LondonGoldAndSilverFix _fix = new net.webservicex.www.LondonGoldAndSilverFix(); net.webservicex.www.LondonMarketData _data = _fix.GetLondonGoldAndSilverFix(); Response.Write(_data.Status + " " + _data.Gold_AM_EUR.ToString()); anyone to know how to fix this or if there is another useful webservice

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  • Solrnet /ASP.NET sample without MVC

    - by Mikos
    I am trying to get a handle on Solrnet and interacting an ASP.NET site with a Solr server. However, the sample app (on the code repository) is MVC based ,does anyone know of a version in plain vanilla ASP.NET? Thanks

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