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  • Polling duplex does not scale... what's the alternative?

    - by user80855
    Our tests showed that the polling duplex binding simply does not scale and can not be used on a service within a web-farm or even a web garden. We have looked at TCP/IP sockets for a client push method, but the firewall issue is does allow us to use sockets. I was wondering what is the alternative "free" solution to this problem? allowing us to scale and allowing us to push data to client... I have also tried the solution in this article http://tomasz.janczuk.org/2009/09/scale-out-of-silverlight-http-polling.html but at the end, there was too much polling on a database, and performance was affected. Our Silverlight application need a pub/sub design, but it needs to be reliable and scalable... any ideas?

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  • PHP Session Cookies fail with users changing IP

    - by Columbo
    Hello, I have a login script for a small application that works by storing session cookies and checking them on each page to make sure the user is logged in. One of the two users who uses the system keeps getting logged out randomly. This appears to be down to the session cookie that shows then authenticated no longer being present. After a lot of investigation the only thing I can see that is different about this user is that their IP address is changing (today it was changing every hour (their on Sky)). The only thing is the change of IP address has happened 5 times this morning and only once has the user been logged off. Has anyone had a similar issue? Are session cookies in someway tied to IP addresses? Any help or links much appreciated. Thanks C

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  • Recording SELECT statements in PostgreSQL 8.4

    - by David Anniwell
    Hi All I've got a table which contains sensitive data and according to data protection policy we have to keep a record of every read/write of the data including a row identifier and the user who accessed the table. The writing is no issue using triggers but obviously triggers aren't supported for SELECT statements. What's the best method of doing this? I've looked at rules but I can't get them to INSERT into a table, and I've tried logging every query but this doesn't seem to log SELECT statements. Ideally for security I'd like to keep the log within a table on the database but logging to a file is fine too. Thanks David

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  • WPF Dragging causes renderer to stop

    - by Cameron MacFarland
    I'm having a problem with my WPF app, where any sort of drag operation stops the UI from updating. The issue seems periodic, as in, the item drags, stops, drags again, stops, etc. in 2 second intervals. It's affecting all controls, including scroll bars. If checked this question as well as this one, and it doesn't seem to be caused by window transparencies. I'm running Win7 x64 with .NET 3.5sp1. Does anyone know what might be causing this, or a way of figuring out what might be causing this?

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  • Box2d Documentation - Outdated, any better api refs?

    - by GONeale
    Hi guys, I am working with cocos2d + box2d and as I look through the 'Hello World' tutorial and attempt others I am finding many constructs which do not seem to be documented in the latest api ref. Would anybody be able to shed some light on what's going on? or point me in the right direction to someone who has covered the new constructs such as b2PolygonDef changing to b2PolygonShape and likewise for circle + who knows what else, seems there has not been any doc updates since August '09. This is the only information I could find on the issue, of another user stating they have found many mismatches also. http://www.cocos2d-iphone.org/forum/topic/1683

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  • jQuery SlideDown Flickering in Firefox

    - by Sithlord
    Hi, once more a jQuery, Firefox flickering issue. (no flickering in IE6/7/8, Safari) I uploaded an example page here: http://sithlord.bplaced.net/testing/jquery_flickering/flickering.html There are two div containers. The inner div is the one I'm hiding. The outer one is the wraping container with the style elements. I found the flicker only occur with the selectbox. Without the SelectBox there is no flickering. But thats not all: (I cant post a second hyperlink: its the same link as above; only change "flickering.html" to not_flickering.html) In this case I selected a lower "option" - as you can see, the flicker disappears in this case. The same is happending, when there are less options in total. (less then about 20) The only workaround I found is deleting the selectbox :) Any ideas, why this is happening and how to fix it? Thanks!

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  • ASP.NET MVC Authentication Cookie Not Being Retrieved

    - by Jamie Wright
    I am having a hard time implementing "Remember Me" functionality in an MVC application with a custom principal. I have boiled it down to ASP.NET not retrieving the authentication cookie for me. I have included a snaphot below from Google Chrome. Shows the results of Request.Cookies that is set within the controller action and placed in ViewData for the view to read. Notice that it is missing the .ASPXAUTH cookie Shows the results from the Chrome developer tools. You can see that .ASPXAUTH is included here. Does anyone know what the issue may be here? Why does ASP.NET not read this value from the cookie collection?

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  • Using key().id() on GAE Datastore and reverse geocoding

    - by Ivan Slaughter
    I have 6000 data of district, subdistrict. I need to represent this on dependent dropdown. The datamodel is for example; class Location(db.Model): location_name = db.StringProperty() location_parent = db.IntegerProperty() location_parent is reference to key() or id()? Still cannot decide which one is good. When i use key() as reference then using JSON to create jquery dependent drop down. My page loading/query and rendering time the dropdown is quite slow? Can i use key().id() as drop down option value to lighten up the page load? Any better solution for this parent/child reference for the drop down? For example: for the district record/entities the location-parent is null, for sub district record location_name will contain reference to parent district record. Other issue is to reverse geocoding the location to store or display geoPoint (lat,long)? Is google MAP API always find the exact lat,long of specific region boundaries or any error checking for the result?

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  • Pylons importing Psycopg2 error

    - by resopollution
    Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Library/Python/2.6/site-packages/psycopg2/__init__.py", line 60, in <module> from _psycopg import BINARY, NUMBER, STRING, DATETIME, ROWID ImportError: dlopen(/Library/Python/2.6/site-packages/psycopg2/_psycopg.so, 2): Symbol not found: _PQbackendPID Referenced from: /Library/Python/2.6/site-packages/psycopg2/_psycopg.so Expected in: flat namespace in /Library/Python/2.6/site-packages/psycopg2/_psycopg.so Psycopg2 was working fine before, but now I get this error. Any ideas on this issue much appreciated. EDIT: so after dealing with so many psycopg2 errors everytime I set up my mac, I've decided to use VMWareFusion running Ubuntu instead.

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  • Ajax method within a added method in jQuery validator

    - by nikospkrk
    Hi, I'm kind of stuck with this pretty simple (I'm sure) jQuery/Javascript issue. Here's the code : jQuery.validator.addMethod("emailExists", function(value, element, param) { var email = value || ''; var valid = 0; $.ajax({ type: "POST", url: param, data: "email=" + email, success: function(msg) { if (msg != '' && msg) { valid = 0; } else { valid = 1; } } }); return valid; }, "* Email address already registered, please login."); This function is called where a user type his email address in a registration form, and everything seems to work perfectly, except that my valid variable returned isn't updated, whereas when I use an alert box it is properly done! It looks like it return the value before the AJAX is done, any idea? Cheers, Nicolas.

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  • iCloud + Storage of media in iPhone Documents folder

    - by Michael Morrison
    I, like many developers, got an email from Apple recently that stated we should move our data from the documents directory into another folder to permit more streamlined backup to iCloud. In recent testing it appears that [your app] stores a fair amount of data in its Documents folder. Since iCloud backups are performed daily over Wi-Fi for each user's iOS device, it's important to ensure the best possible user experience by minimizing the amount of data being stored by your app. Marco Arment, of instapaper fame, has a good take on the issue, which is that the recommended location for storing downloadable files is in /Library/Caches. However, the problem is that both /tmp and /Caches can be 'cleaned' anytime the OS decides that the device is running low on storage. If your app is cleaned then the data downloaded by your app and stored by your user is gone. Naturally, the user will blame you and not Apple. What to do?

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  • CDOSYS and Unicode in the from field - vbScript.

    - by Simmo
    I've got the code below, and I'm trying to set the from field to allow unicode. Currently in my email client I get "??". The subject line and any content shows the unicode correctly. And looking at the MSDN the property should be "urn:schemas:httpmail:from". Anyone solved this issue? Thanks M Dim AC_EMAIL : AC_EMAIL = "[email protected]" Dim AC_EMAIL_FROM : AC_EMAIL_FROM = "?? <[email protected]>" Dim strSubject : strSubject = """??"" testing testing" set oMessage = WScript.CreateObject("CDO.Message") With oMessage .BodyPart.charset = "utf-8" 'unicode-1-1-utf-8 .Fields("urn:schemas:httpmail:from") = AC_EMAIL_FROM .Fields("urn:schemas:httpmail:to") = AC_EMAIL .Fields("urn:schemas:httpmail:subject") = strSubject .Fields.Update .Send End With Set oMessage = Nothing

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  • pure-specifier on function-definition

    - by bebul
    While compiling on GCC I get the error: pure-specifier on function-definition, but not when I compile the same code using VS2005. class Dummy { //error: pure-specifier on function-definition, VS2005 compiles virtual void Process() = 0 {}; }; But when the definition of this pure virtual function is not inline, it works: class Dummy { virtual void Process() = 0; }; void Dummy::Process() {} //compiles on both GCC and VS2005 What does the error means? Why cannot I do it inline? Is it legal to evade the compile issue as shown in the second code sample?

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  • Excel Object in asp.net

    - by Xyz
    Hi I have a serious issue. I am using excel object for opening the excel file it works fine i my PC. when i make application as a website and running the page and uploading it gives the error "'C:\Documents and Settings\Administrator\Desktop\Work\SABRE MSO Mapping Request Template.xlsx' could not be found. Check the spelling of the file name, and verify that the file location is correct. If you are trying to open the file from your list of most recently used files, make sure that the file has not been renamed, moved, or deleted. ". I think it taking server path...but i want to open client excel file before saving the file to the server. Plz help.

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  • Control.EndInvoke resets call stack for exception

    - by Brian Rasmussen
    I don't do a lot of Windows GUI programming, so this may all be common knowledge to people more familiar with WinForms than I am. Unfortunately I have not been able to find any resources to explain the issue, I encountered today during debugging. If we call EndInvoke on an async delegate. We will get any exception thrown during execution of the method re-thrown. The call stack will reflect the original source of the exception. However, if we do something similar on a Windows.Forms.Control, the implementation of Control.EndInvoke resets the call stack. This can be observed by a simple test or by looking at the code in Reflector. The relevant code excerpt from EndInvoke is here: if (entry.exception != null) { throw entry.exception; } I understand that Begin/EndInvoke on Control and async delegates are different, but I would have expected similar behavior on Control.EndInvoke. Is there any reason Control doesn't do whatever it is async delegates do to preserve the original call stack?

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  • JQuery and Nokia :)

    - by Radhika
    Hi I was trying to mobilise my website and I ran into an issue with Jquery. When I was trying to perform a jquery call (.$ajax) it was not getting rendered. This is the part of the code var returnData = ''; $.ajax({url: './indexSubmit.php', async: false, dataType: 'json', data:{flag:'vehicleInfo', vehicleId:xVehicleId}, success: function(data,textStatus){ if(textStatus != 'success'){ alert('Error: '+ textStatus); return; } returnData = data; I am not sure, but I guess I need to install jquery in the browser. If yes, can I automatically download and install jquery in the browser using some javascript?

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  • 'Generic' ViewModel

    - by Ian MacPherson
    Using EF 4, I have several subtypes of a 'Business' entity (customers, suppliers, haulage companies etc). They DO need to be subtypes. I am building a general viewmodel which calls into a service from which a generic repository is accessed. As I have 4 subtypes, it would be good to have a 'generic' viewmodel used for all of these. Problem is of course is that I have to call a specific type into my generic repository, for example: BusinessToRetrieve = _repository .LoadEntity<Customer>(o => o.CustomerID == customerID); It would be good to be able to call <SomethingElse>, somethingElse being one or other of the subtypes), otherwise I shall have to create 4 near identical viemodels, which seems a waste of course! The subtype entity name is available to the viewmodel but I've been unable to figure out how to make the above call convert this into a type. An issue with achieving what I want is that presumably the lambda expression being passed in wouldn't be able to resolve on a 'generic' call ?

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  • When I make a database change, how do I know what needs to be removed and readded to the LinqToSql O

    - by Michael Maddox
    For example, I alter a column in a table to be not null from null. I need to then delete and readd the table. That part is pretty clear. What about views, functions, and stored procedures that access the table, especially that column in the table? I've tried running diffs against the files generated by SQLMetal with some limited success, but even with that it's fairly unclear. I know there is at least one commercial tool out there that claims to address this problem, but I am looking for something free. How are people dealing with this issue?

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  • Resin server giving 200 OK response but tomcat 6.0 not giving 404 Not Found

    - by Suryanarayan Panda
    Hi, We have an application running in resin. We are sending HTTP get and post request to this application & it gives 200 ok response with some text in the response body, as expected. But when same application deployed on tomcat6.0 ,and HTTP get and post request are made , the url gets excuted as expected ,but 404 not found response is coming with nothig in the response body. Can anybody please point out the issue ,and give suggetion what is going wrong.Its urgent Thanks in Advance. Surya

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  • Exception when ASP.NET attempts to delete network file.

    - by Jordan Terrell
    Greetings - I've got an ASP.NET application that is trying to delete a file on a network share. The ASP.NET application's worker process is running under a domain account (confirmed this by looking in TaskManager and by using ShowContexts2.aspx¹). I've been assured by the network admins that the process account is a member of a group that has Modify permissions to the directory that contains the file I'm trying to delete. However, it is unable to do so, and instead I get an exception (changed the file path to all x's): System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. --- System.UnauthorizedAccessException: Access to the path '\xxxxxxx\xxxxxxx\xxxxxxx\xxxxxx.xxx' is denied. Any ideas on how to diagnose/fix this issue? Thanks - Jordan ¹ http://www.leastprivilege.com/ShowContextsNET20Version.aspx

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  • How to use browser options in selenium?

    - by Guru1985
    I have a browser which takes certain parameters as options as shown below. testbrowser.exe -id=test -url=http://www.google.com/. Below is my selenium code. selenium = new DefaultSelenium("localhost", 4444, "*custom "+testBrowser+" -id=test -url=", "http://www.google.com/"); selenium.start(); selenium.open("http://www.yahoo.com"); When i execute this i am getting the below error. java.lang.RuntimeException: Could not start Selenium session: Failed to start new browser session: Error while launching browser at com.thoughtworks.selenium.DefaultSelenium.start(DefaultSelenium.java:103) I think the problem is with options that my browser requires as the same code works fine with firefox or IE. Please help me in solving this options issue. Thanks in Advance Gururaj R

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  • How can I drag from a connected vertical list to the first item of a another list below with jQueryUI Sortable?

    - by Denis Hoctor
    Hi all, I have have several ULs vertically down a page. They are setup using jQueryUI's sortable(). My live example is: http://jsfiddle.net/pborreli/pJgyu/ I can drag from answers to make it the final element in questions. But when I drag from questions to answers the placeholder jumps to the second item in the questions list. At that point I can then drag it to the top. Any ideas why I am having this issue dragging from a list above to the first element of a list below? I've tried editing the padding and margin on both the lists and the sortable items. Thanks, Denis

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  • C# MVC: User Password Reset Controller: Issues with email addresses as usernames

    - by 109221793
    Hi guys, I have written the code below for resetting users passwords (am using the aspnet membership api) in an C# MVC application, and tested successfully on a sample tutorial application (MVC Music Store). Skip to the end if you wish to read problem description first. InactiveUsers View (Partial View) <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<System.Web.Security.MembershipUserCollection>" %> <table class="normal" style="width: 100%; background-color: White;"> <tr> <th>User Name</th> <th>Last Activity date</th> <th>Locked Out</th> </tr> <%foreach (MembershipUser user in Model){ %> <tr> <td><%: Html.RouteLink(user.UserName, "AdminPassword", new { username = user.UserName }) %></td> <td><%: user.LastActivityDate %></td> <td><%: user.IsLockedOut %></td> </tr> <% }%> </table> InactiveUsers Controller public ActionResult InactiveUsers() { var users = Membership.GetAllUsers(); return View(users); } changeUserPassword GET and POST Controllers public ActionResult changeUserPassword(string username) { ViewData["username"] = username; return View(); } [HttpPost] public ActionResult changeUserPassword(ChangePasswordModel model, FormCollection values) { string username = values["username"]; string password = values["password"]; string confirmPassword = values["confirmPassword"]; MembershipUser mu = Membership.GetUser(username); if (password == confirmPassword) { if (mu.ChangePassword(mu.ResetPassword(), password)) { return RedirectToAction("Index", "ControlPanel"); } else { ModelState.AddModelError("", "The current password does not meet requirements"); } } return View(); } I also modified the Global.asax.cs file to cater for my route in the InactiveUsers partial: // Added in 10/01/11 RouteTable.Routes.MapRoute( "AdminPassword", // routename "ControlPanel/changeUserPassword/{username}", new { controller = "ControlPanel", action = "changeUserPassword", username = UrlParameter.Optional } ); // END Now, when I tested on the MVC Music Store, all of my usernames were just words, e.g. Administrator, User, etc. However now I am applying this code to a situation in my workplace and it's not working out quite as planned. The usernames used in my workplace are actually email addresses and I think this is what is causing the problem. When I click on the RouteLink in the partial InactiveUsers view, it should bring me to the reset password page with a url that looks like this: http://localhost:83/ControlPanel/changeUserPassword/[email protected], HOWEVER, what happens when I click on the RouteLink is an error is thrown to say that the view changeUserPassword cannot be found, and the URL looks like this: http://localhost:83/ControlPanel/changeUserPassword/example1%40gmail.com - See how the '@' symbol gets messed up? I've also debugged through the code, and in my GET changeUserPassword, the username is populating correctly: [email protected], so I'm thinking it's just the URL that's messing it up? If I type in the URL manually, the changeUserPassword view displays, however the password reset function does not work. An 'Object reference not set to an instance of an object' exception is thrown at the if (mu.ChangePassword(mu.ResetPassword(), password)) line. I think if I could solve the first issue (URL '@' symbol problem) it might help me along with my second issue. Any help would be appreciated :) Stack Trace - as requested Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [InvalidOperationException: The view 'changeUserPassword' or its master was not found. The following locations were searched: ~/Views/ControlPanel/changeUserPassword.aspx ~/Views/ControlPanel/changeUserPassword.ascx ~/Views/Shared/changeUserPassword.aspx ~/Views/Shared/changeUserPassword.ascx] System.Web.Mvc.ViewResult.FindView(ControllerContext context) +495 System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +208 System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +39 System.Web.Mvc.<>c__DisplayClass14.<InvokeActionResultWithFilters>b__11() +60 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +391 System.Web.Mvc.<>c__DisplayClass16.<InvokeActionResultWithFilters>b__13() +61 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +285 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +830 System.Web.Mvc.Controller.ExecuteCore() +136 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +111 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +39 System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__4() +65 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +44 System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +42 System.Web.Mvc.Async.WrappedAsyncResult`1.End() +141 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +54 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +52 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8841105 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

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  • "Could not load file or assembly 'XXX.YYY' or one of its dependencies. The system cannot find the file specified."

    - by Niall Collins
    I have a .net visual studio solution with a number of projects (class libraries and a web application). I did some refractoring which moved files between projects, created new projects, deleted ones not being used and renamed some existing projects. The solution builds without an issue but when I run the web application, the following exception occurs: "Could not load file or assembly 'XXX.YYY' or one of its dependencies. The system cannot find the file specified." The project called XXX.YYY which was deleted in the refractoring outputed a dll called XXX.YYY. But this isnt used anywhere in the application. I deleted the web applications obj directory and bin folder and rebuild but it still occurs. Anyone have any ideas when this might be occurring, any tips??

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  • Dragged external events from div overflow do not appear using FullCalender and FCDraggable

    - by user327066
    I am using the FCDraggable version of FullCalendar and everything is working well. However, I would like my external events to be contained in a div with an overflow (ex. JQuery UI Accordian) and dragged onto the calendar. When overflow is on, the external event gets hidden behind the calendar and does not appear until dropped onto the calendar. Without overflow, the external events show fine during the dragging process onto the calendar. Has anyone else encountered this scenario? I know FCDraggable isn't part of the official release branch of FullCalendar but it works so well except for this one issue.

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