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.
[Code]....
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:
<httpModules>
<add type="namespace.myHTTPHeaderModule, assembly name" name="headers" />
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</httpModules>
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
Response.Cache.SetETag
i redirect a page from http to https using http module begin request handler .i am calling webservice using ajax but it is saying webserice not defined .which otherwise works fineits work fine when rediect page in page_load instead .but i need to add function for https to http in every page. i still not know why ajax is not working when i use http module for redirect
View 3 RepliesI 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.
View 3 RepliesThis 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
The first 4 lines of my default.asp (/) file are:
Response.ContentType = "text/html"
Response.AddHeader "Content-Type", "text/html;charset=UTF-8"
Response.CodePage = 65001
Response.CharSet = "UTF-8"
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?
[Code]....
I am facing problem in to redirect my site from http://example.net to http://www.example.net
When the user can enter the site name in address bar like http://example.net how can i automatically redirected to http://www.example.net
I am trying to change the properties in iis but it doesnot work.
how can i acheive this
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:
Response.Cache.SetCacheability(HttpCacheability.ServerAndPrivate);
Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
Response.Cache.SetETagFromFileDependencies();
Response.Cache.SetValidUntilExpires(true);
Response.Cache.SetMaxAge(TimeSpan.FromSeconds(60 * 10));
In particular:
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?
Server cannot append header after HTTP headers have been sent
[Code]....
[Code]....
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:
[Code]....
In the web app (C#, ASP.NET) I am working on at the moment, the value in Request.Headers["Referer"] can determine things like custom style. I have created a custom page with a drop down menu to test this functionality. So when the selected index changes, the value selected should be set in the Request.Headers["Referer"] then will be redirected (Response.Redirect), the receiving page will then pick up the value in Request.Headers["Referer"] and adjust the styling accordingly. However I haven't been able to set value for Request.Headers["Referer"]. Is it possible at all?
Website 1 sets the value in Request.Headers["Referer"], e.g. www.xyz.com and before doing Response.Redirect to www.website2.com
Website 2 picks up value in Request.Headers["Referer"], in this case www.xyz.com and do what it needs to do, i.e. styling etc.
I want to redirect http to https. I tried this one,but I have one problem, I have to redirect to another page. The request.url gives the current page, whereas I need to redirect to another page. How do I do that.
if(!Request.IsSecureConnection)
{
string redirectUrl = Request.Url.ToString().Replace("http:", "https:");
Response.Redirect(redirectUrl);
}
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.
View 3 Replieshow to make 301 permanent redirect in asp.net?
I have written code in Global.asax file but my web client says it is not working,
i have written follwing code in Global.asax file:
protected void Application_BeginRequest(object sender, EventArgs e)
{
if (HttpContext.Current.Request.Url.ToString().ToLower().Contains(
"http://lsatfreedom.com"))
{
HttpContext.Current.Response.Status =
"301 Moved Permanently";
HttpContext.Current.Response.AddHeader("Location",
Request.Url.ToString().ToLower().Replace(
"http://lsatfreedom.com",
"http://www.lsatfreedom.com"));
}
}
explain to me the concept of Request.Headers and Response.Headers in ASP.NET? Under what scenarios you use Request.Headers and Response.Headers?
View 1 RepliesI have created login for site. I am using "UserLogin.ascx" which is placed in masterpage. Now I have to create the Login system so that the users from other sites login to my site through Http post or Get. I have created the page for sending "HTTP Post" to my site and it also login to my site, but when I click on any link it logs out also in the browser's address bar the URL of the previous site is shown.
View 3 RepliesI'm having real trouble redirecting pages from http to https on my live website. Everything is fine on my IDE but as soon as I upload it to my shared web host (123-reg.co.uk) I hit a problem. When I try to redirect to https using Response.Redirect it seems a loop occurs and the request is never carried out.
The code I've tried:
[Code]....
and
[Code]....
Both above methods worked fine in my IDE but not on my live system.
In IE nothing happens but in Firefox the below error is displayed:
"Firefox has detected that the server is redirecting the request for this address in a way that will never complete. "
I'm trying to make our (very heavily AJAX based) website more search engine friendly.We have a system where certain urls redirect to the main page after setting session variables to change the behavior of the main page. This is acheived using the Controller.Redirect method to create an ActionResult.
So for instance, the main page is:
http://radiotuna.com
but if we want to link to a radio station, we use:
http://radiotuna.com/s/66258
which redirects to the main page. However in this case, the displayed content is different due to Session variables that were set prior to the redirect.
What will be indexed by web crawlers when presented with this redirect?
Will Session be preserved in this case?
As far as I can tell there are a few possible outcomes:
crawler follows redirect, session info is preserved, crawled data is associated with http://radiotuna.com/s/66258 (the desired outcome)
crawler does not follow redirect. If we can send a page with the 302, this is OK-ish. Is this permitted?
crawler follows redirect, session info is preserved, crawled data is associated with http://radiotuna.com/ (bad)crawler follows redirect, but session info is discarded, so main (unmodified page) is associated with http://radiotuna.com/s/66258 (bad)
Perhaps a 302 is the wrong status to send back. Perhaps the idea of using redirects in this case is flawed.
EDIT: Why are we doing this? Ideally we'd like only a single URL to appear in the address bar, so we'd like to always redirect to the main page. When coming in from a redirect, this would result in a different title and meta description and it is this that we'd like to be picked up by the crawler and associated against the pre-redirect url.
EDIT2: Would it be better to detect if we're being hit by a crawler and to deliver the page without redirect in this case? How might one detect crawler clients?
I am working in a new project. It's a multi level marketing system. The client forwarded on requirement in his SRS. It's coming like this,
One customer registers with the companyCompany provides one username(myusername)Also company provides a link to the customer like -
http://domainname.com/username/ ie
http://domainname.com/myusername/
If a guest visits the site by using the above mentioned url, the registered user gets an email like one person from the following ip and country visited your website.
if we create folders under the website for the usernames it will be huge in number. Is there any other way to do this.
This is Asp.Net 3.5 + MSSQL 2008. So how can we track it from the url itself.
The objective of this component is to be able to forward whatever HTTP requests it receives to forward to a different server based on the parameters but keeping the URL and POST data intact. For example:
If the component receives
[URL]
It will return the response from either
[URL]
where XYZ can be valid name of the page. I think I can probably individually create each page to do a Response.Redirect but i am wondering if there is a more generic way to do this? In addition, is this something I have to configure on the IIS level rather than code level?
I want to post data to another server (JSP or ColdFusion).
Note:Post which means the data is required at the another server also the browser should be redirected automatically.Is it better to use form tag...input type hidden fields, values...
and from javascript
form.submit();
[code]...
I should use WebClient class?Please provide the points from Security view also.
I put this code in my aspx file :
[Code]....
when I access my aspx file through Internet I can download the file "Test.exe" but my internet security doesn't permit to install it. Has anyone had this problem?
I have got ssl security for my website.I have written onLoad that [URL] ... Should redirect on [URL] ... it redirects but first the [URL] ....pages loads full and then after a sec it redirects...I want to solve this
function(){
windows.onload = windows.location.href("https://mylifeshades.com")
}