Search results matching tag 'httphandler'

The system.webServer/handlers/add element for http handlers has an allowPathInfo attribute. What is it for?

Shayke — Sat, 05 Dec 2009 05:00:00 GMT

I'm playing with http handlers. When adding an http handler to the web.config, in order to make it process special extensions on IIS 7, you need to register it under the system.webServer/handlers element. The add element there has an allowPathInfo attribute and I can't understand what is it for...

MSDN says:

Specifies whether the handler processes full path information in a URI, such as contoso/marketing/imageGallery.aspx. If the value is true, the handler processes the full path, contoso/marketing/imageGallery. If the value is false, the handler processes only the last section of the path, /imageGallery.

It doesn't help so much... Anyone?

Thanks, Shay.

Session Variables Inside C# Class

vfarmak — Fri, 20 Nov 2009 05:00:00 GMT

Hi Everyone!

I am experiencing the following problem: in my Global.asax file in the Session_Start method i have added a Session Variable named "AppCulture", just like the code listed below:

    void Session_Start(object sender, EventArgs e) 
    {
        // Code that runs when a new session is started
        Session.Add("AppCulture", "el-GR");
    }

In my Class Method I have a function, in which i want to check the session's variable value. In order to do that i use the following statement, as listed in the code below:

public static string CustomMethod()
        {
            string lang = HttpContext.Current.Session["AppCulture"].ToString();
            if (lang.Equals("el-GR"))
            {
                return "Ελληνικά";
            }
            else
            {
                return "English";
            }
        }

I use this method inside an EventHandler (file with .ashx extension), in order to fill dropdownlist values with javascript. Although i have initialized my session variable in the Session_Start section of the Global.asax file. The specific Session Variable inside the Class evaluates to null. Does anyone know other alternative in order to check session variables inside class code?

Thanx Bill

ScriptManager, Dynamic Script, and UpdatePanel

ldadams — Thu, 22 Oct 2009 04:00:00 GMT

I am writing an asp.net application and would like to provide an easy way for developers to inject client script into the page. This application has an updatePanel in which most all things happen inside.

So what I did was create a DynamicScript object that takes in a string (some client script) and appends a session var. Then I have an HttpHander for a path of __dscript.axd. This handler grabs the sessioned script and writes it out to the stream. I register the include for this handled file with the ScriptManager.RegisterScriptInclude() static method.

One of my main issues seems to be I can not control the order of this include inside the DOM. My application uses a couple script libraries including jQuery which are referenced using the compositeScript property of the scriptManager control. My script seems to always be added before these other includes are added causing my dynamic calls that use these libraries to fail.

What I would like:

All postbacks regardless if async needs to re-reference my __dscript.axd script as to execute the updated client methods it contains.
This include needs to be registed as close to the bottom of the page as possible as to have access to all elements and referenced script includes.

I have tried this about a million ways with no luck. Does anyone know of a proven way to do this or know of a control out there that will assist?

Thanks for any help!

Re: URL Rewriting Dynamic

samirindianic — Mon, 12 Oct 2009 04:00:00 GMT

i got the solution

rule is <rule url="/(.+).aspx" rewrite="/CategoryDes.aspx?Name=$1"></rule>

but now i have a question that if i gave a rule to particular page should i give the rules to others page also.because the others pages are not display.

Reply me as soon as possible

HttpHandler throwing 404

joelycat — Thu, 08 Oct 2009 04:00:00 GMT

I've implemented an HttpHander for PDFs. The idea is to take the request and then generate the correct document and stream it back. The problem is when I request a file that doesn't actually exist, the HttpHandler never fires and the browser gives a 404 page??? I know the handler is registerd correclty because, as stated, if I give it an existing PDF name I can step through the handler code no problem.

I've done something very similiar before and the handler worked fine with non-existent files. Any ideas? Thanks.

</joel>

Post file from static html page to a http handler

mhrist — Mon, 14 Sep 2009 04:00:00 GMT

Hello,

I am trying to submit a file from a static .html page on one server to a .aspx or .ashx (http handler) and since I cannot put runat=server on the html the Request.PostedFiles or whatnot does not get populated. And I put multipart/form-data encoding and everything.

Back in the day you had to use a third party component like AspUpload but there is no .NET version which is a bummer.

Marty

Passing Request Headers from one application to another

calkenn — Fri, 04 Sep 2009 04:00:00 GMT

I have one application (CreateRequestHeader) containing a button and a link button. When the button is clicked i am adding a header key (proj_user) and adding the user name as the value.

The link button will open up another application (ReadRequestHeader) where i would like to read the request header to get the value of proj_user created in CreateRequestHeader

Code:

CreateRequestHeader class:

protected void CreateRequest(object sender, EventArgs e)

{

NameValueCollection headers = HttpContext.Current.Request.Headers;

Type t = headers.GetType();

PropertyInfo p = t.GetProperty("IsReadOnly", BindingFlags.Instance | BindingFlags.IgnoreCase | BindingFlags.NonPublic | BindingFlags.FlattenHierarchy);

p.SetValue(headers, false, null);

headers.Add("x-qsp-user", txtUserName.Text);

txtCreate.Text = Request.Headers.ToString();

}

protected void CreateRequest(object sender, EventArgs e)

{

NameValueCollection headers = HttpContext.Current.Request.Headers;

Type t = headers.GetType();

PropertyInfo p = t.GetProperty("IsReadOnly", BindingFlags.Instance | BindingFlags.IgnoreCase | BindingFlags.NonPublic | BindingFlags.FlattenHierarchy);

p.SetValue(headers, false, null);

headers.Add("proj-user", txtUserName.Text);

}

CreateRequestHeader aspx:

<asp:LinkButton runat="server" Text="Send Request" OnClientClick="window.open('http://localhost/ReadRequestHeader','requestread')" />

In ReadRequestHeader I am attempting to get the value of proj_user by looking at the Request.Headers values. However, the proj_user header key does not exist.

Is there a way to do something like this?

URL Rewriting/Redirecting for WebService(s) using HttpHandler renders blank page

SethuramR — Thu, 03 Sep 2009 04:00:00 GMT

Hi,

I am trying out with a simple URL redirection technique; if I am successful in this approach I will go ahead in implementing friendly RESTful urls for my application.

Problem I am facing in URL redirection using Http Handler:

I have created a VisualStudio2008 webservcie application.

Added 2 services, Service1.asmx and Service2.asmx.

Scenario 1:

Added an Http Handler (GenericHandler) class in the same hierarchy.

Added the below code in ProcessRequest method,

if (context.Request.PhysicalPath.IndexOf("Service1.asmx") > -1)

context.RewritePath("~/Service2.asmx");

Registerd the Handler in the httpHandler section of the webconfig, the bold one

<add verb="*" type="RESTWS.RESTHandler,RESTWS" path="*.asmx"/>

Now, I run my application by making Service1.asmx as the start page, the process hits my handler code, executes it with out any expection, but atlast I see a blank screen in the browser.

For crossing my code I also did the following,

Scenario 2:

Added a Global.asax file in the in the same hierarchy.

Added same code in Application_BeginRequest

if (Context.Request.PhysicalPath.IndexOf("Service1.asmx") > -1)

Context.RewritePath("~/Service2.asmx");

Commented out the Handler registry part what I added in the webconfig.

Again ran the application, the redirection from Service1.asmx to Service2.asmx happened successfully as expected.

Scenario 3:

When I have both the Global.asax and the httphandler enabled, again I get a blank page.

Scenario 4:

I felt that httpHandler doesnot suppport url redirection in the case of asmx(webservices), so I tried the same above procedures and scenarios with VisualStudio2008 Web application with 2 aspx pages (Default1.aspx and Default2.aspx) instead of Web service application. But the results were same as the above scenarios.

My Questions:

What is the mistake I am doing in my above scenarios?

How to perform urlredirection for web services using Http Handlers?

Thanks in Advance.

How to validate my .aspx page access before it is accessed

JPalaparthi — Wed, 19 Aug 2009 04:00:00 GMT

Hi,

I am implementing a Role based web portal.Each and every .aspx page to be accessed before it is validate with the role privilage.

So I would like to implement the validation before the .aspx page getting accessed.

Clearly without writing the code in each and every .aspx page can I validate the requested page by chacking the role privillage in the database?

--> The code should be executed after the Log in screen.Once user logs in then .bla bla bla

I tried to write httpHandler but i am failed to use it .

I check for an every event to check every request in Global.asax but for every request there is no event. i.e. only for Application_Start and the Session_Start.

So please provide me assistance to complete this task .

Thanks in advance,

Jitendra

Firefox 3.5 + Firebug 1.4 - Issue with 304 + If-Modified-Since headers

tmessbauer — Wed, 22 Jul 2009 04:00:00 GMT

So I came across this earlier today while test driving some new code to compress css, js, etc. Essentially, there is an httphandler that takes a list of resources, compresses them automatically (so you dont have to keep a dev and a minified version), then caches them until the file notification occurs. All works great... until it gets integrated to the site and I start inspecting the headers with the net tab in firebug... Essentially, the page locks up intermittently and takes forever to render whenever a 304 is supposed to be returned.

Here are details of the issue...

IE7/IE8, Chrome, Safari are all looking great. Huge perf improvement as well.
Stepping through a server side debugger proved that code was executing as expected and serving correct response based on etags and LM date.
Occasionally FF reporting slow script. While I dont remember the script's name, it was not mine and I vaguely remember it having a FF like name.
FF looks good if firebug is off (this was the key)

So after some digging, I found that latest version of Firebug 1.4 has an issue where it does not send the last modified header to the server correctly. Since things like this usually take forever to track down, I was not so stoked. So it was pretty awesome that this was already in bugzilla and there is a build that will prevent this from happening.

So if you have the issue, update Firebug to 1.4a31. I did and the issue disappeared immediately.

Here is the link for 1.4a31 - http://getfirebug.com/releases/firebug/1.4/firebug-1.4.0a31.xpi

Here is the post if you want more information - http://code.google.com/p/fbug/issues/detail?id=1274#c16