This has been bugging me for a while now. Whenever I try to share my website link on Facebook or another link-sharing site, the link-sharing site either removes the URL (like it doesn't recognize it as valid) or in Facebook's case - it can't retrieve meta-data automatically.
I'm pretty sure that it used to work. However, Googling / StackOverflowing for this problem is a difficult task, since I have no idea what possibly could create this problem.
I've tried to create a static .HTM file on my website, and that works fine: test.htm
My default home page is a classic ASP (yeah I know, PHP version in the works) which uses IIS 7 URL Rewrite module.
I've tried to check the resultcodes and headers for both test.htm and my default home page on this page: [URL]
This is the results:
test.htm
URL=http://www.orango.nu/test.htm
Result code: 200 (OK / OK)
Content-Type: text/html
Last-Modified: Fri, 04 Feb 2011 10:16:55 GMT
Accept-Ranges: bytes
ETag: "0d877a654c4cb1:0"
Server: Microsoft-IIS/7.0
X-Powered-By: ASP.NET
Date: Fri, 04 Feb 2011 10:40:08 GMT
Content-Length: 452
default home page /
URL=http://www.orango.nu
Result code: 200 (OK / OK)
Cache-Control: public
Content-Length: 13463
Content-Type: text/html; Charset=UTF-8
Accept-Ranges: bytes
Server: Microsoft-IIS/7.0
Set-Cookie: ASPSESSIONIDSCSADCAR=DLPBECCBGDJMADLEPMOMHDDC; path=/
X-Powered-By: ASP.NET
Date: Fri, 04 Feb 2011 10:24:22 GMT
I have created one page to show the progress of payment . After successful payment i need to redirect user to the payment confirmation page. When i am redirecting am getting the following error.
Cannot redirect after HTTP headers have been sent.
In my application I need to set a http response header. I'd like to do this in web.config. but I dont'know if this is possible and I can't find it on Google. Solution Finally, after a long search I found the solution. Create a class with this code:
public class myHTTPHeaderModule : IHttpModule { #region IHttpModule Members public void Dispose() { } public void Init(HttpApplication context) { context.EndRequest += new EventHandler(context_EndRequest); } void context_EndRequest(object sender, EventArgs e) { HttpResponse response = HttpContext.Current.Response; response.AddHeader("Content-Language", "*"); } #endregion }
(Don't ask me why to use this event, but it works..) Now add a line in web.config in the HttpModule section:
I Have a specific set of HTTP response headers I'm trying to recreate in ASP.NET. Here is how it looks in Fiddler (Raw):
HTTP/1.1 200 OK Content-Length: 570746 Content-Type: audio/wav Last-Modified: Wed, 19 May 2010 00:44:38 GMT Accept-Ranges: bytes ETag: "379d676ecf6ca1:3178" Server: Microsoft-IIS/6.0 X-Powered-By: ASP.NET Date: Tue, 05 Oct 2010 18:35:18 GMT
Here is how it looks on the Headers tab (same data. Different view)
I am trying to recreate the same set of headers (different values of course) with code, on an ASP.NET page. The biggest problem is with the cache settings and the ETag. It usually shows some "private" or similar cache setting and no ETag value, even though I'm trying to set it explicitly with
I am creating a web application in C#.When my page loads I fire an asynchronous thread to process some data. Part of this processing is the updating of a cookie. However when I save the cookie to the response by System.Web.HttpContext.Current.Response.Cookies.Add(c) where c is the HttpCookie, I get the following exception:HttpException: Server cannot modify cookies after HTTP headers have been sent.
I am getting the following warnings on the Event Log for a Asp.Net WebSite running on IIS 7.
Exception information: Exception type: HttpException Exception message: Server cannot append header after HTTP headers have been sent. at System.Web.Hosting.ISAPIWorkerRequest.SendUnknownResponseHeader(String name, String value) [code]....
I tried to debug the WebSite but it just does not show in debugger. The web page which has got this issue contains the following.
Its a content page with a Master page.
It has a grid inside an UpdatePanel which is Triggered by a Timer.
On the specified time grid data is refreshed.
Everytime this happens we see a new warning in the EventLog.
We have a basecontroller that has both an OnActionExecuting and OnActionExecuted. Occassionally, the OnActionExecuted will throw an exception 'Server cannot modify cookies after HTTP headers have been sent.'. This doesn't happen all the time, and we can't find a pattern to it. My guess, based on searching, is that filterContext is not always the current context. Is there a way to rewrite the Cookies.Add to get the current context, always? Or is the fact that we are in the ActionExecuted mean the headers will always already have been sent and we shouldn't be doing anything like this in the executed step?
I have an ASP.Net site (happens to be MVC, but that's not relevant here) with a few pages I'd like cached really well.
Specifically I'd like to achieve:
output cached on the server for 2 hours.if the file content on the server changes, that output cache should be flushed for that page cached in the browser for 10 minutes (i.e. don't even ask the server if it's that fresh)when the browser does make an actual subsequent request, I'd like it to use etags, so that the server can return a 304 if not modified.
(note - time values above are indicative examples only) 1) and 2) I can achieve by Response.Cache.SetCacheability(HttpCacheability.Server) I know 3) can be achieved by using max-age and cache-control:private I can emit etags with Response.Cache.SetETagFromFileDependencies();
but I can't seem to get all of these things to work together. Here's what I have:
can browsers do both 3) and 4) like that? When Firefox issues a new request after it expires in the local cache, it does indeed send the etag the server responded with before, but I get a 200 response.setting the variables like above, where would I set the duration of the output caching?
I have this web application (LAN) that sends an email when users registers to one of our events.
The code is pretty straightforward:
[code]....
The application sends the email without problems. The issue is that somehow a third person is enlisted in the cc, and receives a copy of the email!. What could be the problem? The smtp? IIS?
I am trying to make ActionFilter which redirects banned users to /Error/NoAccess site, so I have ActionFilter:
[Code]....
Before each public class xxxxxxController : Controller I use [NoBannedUsersActionFilter]. But for example on website /Account/LogOff I have error: 'Server cannot modify cookies after HTTP headers have been sent.' and VisualStudio shows me AccountModel.css file and this method:
I have a weird thing happening. I have two identical databases installed on one virtual machine but under two different instances of SQLServer. For some reason, periodically when saving from one it will save to the other instead. Using debug, I have verified that the connection string is correct and when the item saves, it still saves to the wrong database.I use session variable, and am of the belief that it might have something to do with it...and t hat when I go from one to the other it is still getting the connection string form the other for some reason.To make sure that it isn't a problem, I make sure that I completely close out one database before opening the other in a new IE window.I assume that when I completely close out an internet explorer window that it abandons all session states. Is that true?
I want get code for how to stop sending mail when email format is wrong in password recovery control and getting error message and also how to getting error message, means how to stop that.
I am trying to add Canada Post shipping information to my website. Canada Post has this link to a sample site showing what to send. [URL] I have worked with Canada Post support and they have no sample code for C# or Visual Studio. Can some get me started on how to send the above information from a button click event?
Is it possible to send multiple HTTP requests asynchronously to an ASP.NET web site or any other web server using .NET ? And, then. collect responses from those requests as they come using .NET asynchronous paradigm ? Is it possible ? Or would there still be limit of max 2 HTTP connections from .NET using HTTP ?
I am using an SMS Gateway to make my application receive SMSs. For this, the SMS Gateway sends a request to one of the pages in my application with the message as a querystring parameter. eg.[URL]. Now after my page gets invoked, I need to send an OK response to the SMS Gateway so that it doesn't keep retrying to send the same message to my application again and again. I cannot figure out how to send the OK response.
I have problem of accessing my website created using visual studio on my local pc. the pc using windows 7 with static ip address has been configured and i have added a hostname "192.168.0.1 hosts myweb.mylocal.com" on c:windowssystem32driveretc. on the IIS i have configured the binding myweb.mylocal.com with impersonation set enabled and windows authentication is enabled.
the user login just keep prompting eventhough i have entered the correct username and password.
I have never work with a repeater and after a lot of research I got to the conclusion that this is the control I need to use for what I have to do. I need display data but I will need 2 headers and after some sort of amount of records the headers will repeat again. In this page you will find an example of what I'm trying to do http://ratings.fide.com/view_source.phtml?code=45276 I don't know if a repeater is the right control but i thin it is.
I have an application that interact with a SMS gateway and after successful delivery of message to my application i will like to acknowledge them by sending HTTP 200 Response to the Gateway, how can I do that suing asp.net. I am thinking of using Response Headers parameter to do that.
I have a very weird thing happening. I have two databases that have exactly the same tables but different database names on the same virtual machine, but in different instances of SQL Server. For some reason, when using one of them, it will save to the other. In debug, looking at my connection string..I have verified that it is correct, yet when I allow the save, I look in the table and it isn't there, it is in the other database that is in a table with a completely different name and in a different instance of SQL Server.
Web developer newbie question (I am otherwise fluent in C#!):
I need to set up a web site (ASP.NET/C#) that can receive XML posts via HTTP. I haven't the first clue of where to start. Create web site? Web page? Web service? WCF? Can you self-host it, or must it be on IIS? How/where do you catch the post event?
I am developing a website for uploading files to our web server. The site was working last week when I first set up the website. However, I made some changes this morning and copied/pasted my new version on our webserver. Now whenever I enter the URL, I get the HTTP 404 error. The other sites I developed are still working. It is only the new website that is giving this error. I have checked to make sure I am spelling the file names correctly. An test html file loads fine in this subdirectory, but when I change it to the default.aspx, I get the HTTP 404 error.
