It is good experience by reading posts/discussions so im asp.net programmer i need the knowledge of how to work with http handlers? Where can we use them and what are exact scenarios in our requirement?
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I have created a dynamic signature for our members in Asp.net 2.0 with VB code behind that they can use as a signature in various message boards using an http handler.This is the first time I have evered used a http handler and I am probably missing a step on how to use it.The direct url to the signature is:
[URL]where the ID is a particular member. This works fine on most message boards and if you copy the link directly in a browser window, but not in other message boards.In order for this signature to work on all message boards, the url syntax would need to be as follows:[URL] or something similar where the URL does not have question marks, equal signs and the file name ends in .png .How can I go about doing this where the link will go to my http handler and overlay text, etc.
am new to http handler concept and havent worked on it.What is http handlers and what is use of it??
View 1 Repliesi 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 Repliesis httpmodules executed each and every time in request and response cycle ?? if Yes is it possible to disable a specific http module ??
View 3 RepliesI mean what is their use . . .
View 2 RepliesHow do we findout the whether the application is using any HTTPModules and httphandler in the applicaion?Is there anyway to findout from the url without checking the web.config file?
View 1 Repliesis there any mechanism similar to HTTP Module in classic ASP?
View 1 RepliesI am having an Asp.net Web application in .Net 3.5 Framework, deployed on IIS 6.0. Obviously we have used Http Modules in our application. The problem is that we are having many entries specifying the message "Http Module is getting Initialized" Now, I would like to know when does an Http Module get initialized? I mean is there any specific reason? Also, is there any case of recycling of http module?
View 2 RepliesI have a very simple query. I have added custom header to my website. Now I want to read the custom header. I am using IIS 6.0 on windows XP. I have already tried using using the Request.ServerVariables and and Request.header method. But none of them give me the custom header added to website.
View 2 RepliesI use http handler for loading images.
View 1 RepliesCan anyone tell me if there is a way to convert all URL's to lowercase using an Http Module for URL rewriting? For example www.homeforhire.com/Home.aspx should be converted to lowercase.
I cannot use the IIS7 URL Rewriter because I need to perform database lookups as part of my URL rewriting.
I have researched this extensively but have not had any luck finding a solution.
The only alternative I can think of is to use a dynamically created canonical link in my page headers.
Our site uses urlRewriter http module that does the url rewriting for us. I want to create another http module that will handle our customize URL redirects. Now I want this new customize http module to be call before the UrlRewriter module (to avoid page not found messages the UrlRewriter generates). Is there a way we can contol the calling order ?
View 3 RepliesI have a HTTP handler that returns a GeoRSS feed (type of XML) when called. This handler is called from a javascript and the returning xml is consumed directly by a Virtual Earth (bing) map control on the same page. I am Encrypting/Decrypting URL parameters but any one can see the source html, copy the url and get access to the xml feed.Since the call is from javascript how can I prevent unauthorized access to the HTTP handler?
View 2 RepliesI am writing a custom HTTP module to implement user authentication and appropriate access rights. And for identifying access rights for the user also depends on identifying the client's machine details like IP address, machine name, etc. The access rights will depend based on from which location or machine the user is trying to login.
Can we get these details from the HttpApplication or HttpContext object?
Server cannot append header after HTTP headers have been sent
[Code]....
[Code]....
I am using this root .
[Code]....
It is working absolutely fine with this root folder('myroot'). When we change root foldername to "myroot.net" handler not responding.I have checked it by RouteDebugger and it shows thatRoute: NO MATCH!Matches Current Request: True
I am trying to call a webservice that requires me to authenticate and then pass the session id returned from the authenticate method to subsequent web service calls. The session id has to be passed as HTTP request header. So I tried using the following code to add the session id to a HTTP request header:
System.Collections.Specialized.NameValueCollection headers =
HttpContext.Current.Request.Headers;
Type t = headers.GetType();
//get the property
System.Reflection.PropertyInfo p = t.GetProperty("IsReadOnly",System.Reflection.BindingFlags.Instance
| System.Reflection.BindingFlags.IgnoreCase | System.Reflection.BindingFlags.NonPublic
| System.Reflection.BindingFlags.FlattenHierarchy);
//unset readonly
p.SetValue(headers, false,
null);
//add a header
headers.Add("Cookie",
"SID=" + sessionId );
The header is supposed to be called "Cookie" and the SID contains the session id. The problem is the last line in the code above gives an exception saying "Operation is not supported on this platform". I am running this code on my dev machine with with Windows XP Professional Service Pack 3 and IIS 5.1. I haven't been able to find any solution to this problem after days of searching. I also tried to deploy my web app on IIS directly but had the same error.
I am doing some redirecting of old url in global.asax's application_beginrequest. Redirecting works fine when getting the url's using an http get but not when using an http head request.
View 4 RepliesWhen I have a HttpHandler class in C#/ASP.NET mapped to a file extension in IIS any file with that extension fails to download/display in web browsers (it's downloaded as a 0-byte file in some browsers and nothing at all in other browsers). After removing the application mapping for the HttpHandler in IIS so it doesn't call the IHttpHandler class in C#, the web browser downloads the file successfully.
This was tested with an IHttpHandler class in C# that has an empty ProcessRequest method.
This is kind of cross-post; however, can a custom http handler be automated to run either using a timer or a filesystemwatcher to post an xml document to another server (with no human interaction)?
View 2 RepliesAccording to MSDN documentation, this is supposed to set the Cache header "Expires" to a certian value. A check of fiddler for the response from my handler indicates the Expires is being ignored. Is this a known bug? I see other posts where people have just given up with out an answer.
View 2 RepliesI have a 3.5 app with a subfolder containing numerous documents. I want to control access to all files in this subfolder via an ASHX handler. My file system looks like this:
/Default.aspx
/web.config
/Filecabinet/Filecabinet.ashx
/Filecabinet/web.config
The content of the web.config in the files folder is simple:
[Code]....
This works fine on my WinXP / IIS6 developement box, but doesn't work at all when I upload it to my IIS7 / shared hosting account (GoDaddy). I know it doesn't work because I can access every file in the subfolder - the restrictions I wrote in my ASHX code-behind aren't taking affect at all.
am trying to write an HttpModule that will work in IIS7 with integrated pipeline mode AppPool. Within this module I need to access Session variables and to be able to capture the Session Start and End events. I have found a couple of articles on this topic that indicate the need to modify the behavior of the HttpHandler in PostAcquireRequestState to force the Session for the context to be initialized. The article I am using as a template is posted here:[URL]In my case I am getting the following error:
[NullReferenceException: Object reference not set to an instance of an object.] System.Web.PipelineModuleStepContainer.GetEventCount(RequestNotification notification, Boolean isPostEvent) +30 System.Web.PipelineStepManager.ResumeSteps(Exception error) +1112
System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) +113 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +616
I believe that this error implies a problem with attempting to attach an event handler multiple times. I am aware that the modules Init function can be called more than once and have set a static initialization flag which ensures that I will only ever attach the event handler once.In the most condensed form my code is as follows:
public class HttpModule : IHttpModule, IRequiresSessionState
After adding a custom module, Module list is showing MyModule "Entry Type" as "Local".
and Entry Type of all other modules is "Inherited".
what is Entry Type and difference between "Local" and "Inherited"?