HttpHandlers and HttpModules

Httpcontext.current.User.Identity.Name is null

hari4u — Tue, 24 Nov 2009 10:32:34 GMT

Hello all,

I'm using SQlmembership provider and login control in my application.

The code behind is as below:

protected void Login1_Authenticate1(object sender, AuthenticateEventArgs e)
        {
            bool authenticate;
            authenticate = ValidateUser(Login1.UserName, Login1.Password);
            if (authenticate)
            {
                if (Authorized("emprule"))
                {
                    string s= HttpContext.Current.User.Identity.Name;
                    Response.Redirect("~/WebForm1.aspx");
                }

            }
            else
                Response.Write("Login failed");
        }
        public static bool ValidateUser(string Username,string Password)
        {
            Boolean bauthenticated = false;
            bauthenticated = Membership.ValidateUser(Username,Password);
            if (!bauthenticated)
                return false;
            IIdentity identity;
            identity = new GenericIdentity(Username, Membership.Provider.Name);
            
            // TODO: Get Roles
            string[] roles = Roles.GetRolesForUser(identity.Name);
            IPrincipal principal = new GenericPrincipal(identity, roles);

            // Place user's principal on the thread
             Thread.CurrentPrincipal = principal;

             HttpContext.Current.User = principal;

             return bauthenticated;
        }

        public static bool Authorized(string rule)
        {
            bool authorized = false;

            // TODO: Check rule-base authorization
            // No parameter passed to GetAuthorizationProvider method as 
            // we'll set the defaultAuthorizationInstance in App.config.
            IAuthorizationProvider ruleProvider;
            ruleProvider = AuthorizationFactory.GetAuthorizationProvider();
            
            authorized = ruleProvider.Authorize(Thread.CurrentPrincipal, rule);
            
            return authorized;
        }

I'm getting the Httpcontext.current.user.identity.name value in this page,

But when i redirect to other page and try to the get same

I'm getting null value.

Can anyone please help me with this.

Thanks,

Hari

everything but that %20

FunnyHowIHateThis — Wed, 25 Nov 2009 00:29:59 GMT

i'm not wanting to venture into modules and rewrite, unless of course I'm delusional about ServerUtility, UrlEncode or UrlDecode

I know that nothing is simple but dang i just want the passed querystring to be free of %20 and be a "+" or a "-"

javascript url looks good to me too

so anyhelp that doesn't contain a link would be great. Or the c# code to redirect 404 would work hey it's all about can we just get this done

request.url.absoluteuri

geoffish — Sat, 10 Oct 2009 23:38:22 GMT

I have some c# code in global.asax:

Application_PreSendRequestHeaders
{
Uri myuri = new Uri(Request.Url.AbsoluteUri)
//Do Some functions
}

The problem is that Request.Url.AbsoluteUri is returning "http://www.somesite.com/default.aspx" , when the Url in the client's browser looks like "http://www.somesite.com/". This small diffrence is causing a redirect loop. If you really need to see my code(instead of 'do some functions') for some reason, I'll post it later.

is it possible to modify request headers are redirect response to a different page

san123 — Mon, 23 Nov 2009 13:00:22 GMT

Hi,

is it possible to modify request headers are redirect response to a different page.

Thanks

How to hide some query strings in a url rewrite

elbasha — Mon, 23 Nov 2009 22:52:33 GMT

I have the following code:

I want to change it so that only the MCatName and SCatName show up, is it possible? I tried a couple of ways but didn't seem to work out.

Accessing and removing existing http headers in PostRequestHandlerExecute

tristan_c — Mon, 23 Nov 2009 09:56:46 GMT

Hi,

I would like to access the headers collection in a custom PostRequestHandlerExecute module. The problem is that on attempting to even access the headers, I get a This operation requires IIS integrated pipeline mode error. I'm using asp.net 2.0 and IIS 6 and don't have the option to use an integrated pipeline mode as far as I can tell.

Here is example syntax giving rise to the error:

app.Context.Response.Write(requestContext.Response.Headers.Count);

Any ideas how to successfully access the headers using a PostRequestHandlerExecute module? I can of course add headers back in the asp.net page but my goal here is to examine or even strip headers.

Finally, apologies if this has already been answered but I can't find a suitable answer specific to IIS6/.Net 2.0.

Many Thanks,

I have more than 1 rewrite that start with the same directory, how to fix?

elbasha — Mon, 23 Nov 2009 03:11:59 GMT

Hello,

I have the following problem, on my category page, it will either be:

Now how do I go about fixing this problem? The urlrewriter.net for some reason you can't have more than 1 rewrite that has the same name/value. How can I make this into one? If I delete the top one then I would get an error if there are only 2 querystrings.

How to get Virtual Path?

dragon_ballz96 — Sun, 18 Jan 2004 07:04:26 GMT

Hi,

Have been searching via MSDN and I have found this HttpConfigurationContext.VirtualPath property under namespace of System.Web.Configuration. Tried to get the path using the following:

Dim strPath As String
Dim test As HttpConfigurationContext
strPath = test.VirtualPath.ToString

But it gaves an object reference error in this case. Does anyone know how to declare and get the value properly? Thks.

Rgds
Ryan

generated dynamic aspx page by using httphandler

robertleeyan — Sun, 22 Nov 2009 12:27:55 GMT

i use httphander dynamically generated urlLogin.aspx page,On my development computer to access (http://localhost:4017/ishow/urlLogin.aspx?login_name=111) entirely correctly, when I was publisher this site to the server, access (http://localhost/ishow/urlLogin.aspx?login_name=111) can not find the page. why... please help me tks

web config

my pc Environment

winxp iis5.1 vs2005

server Environment

win server2003 iis6.0 .net framework2.0

Help rewriting base URL folders

hillb — Fri, 20 Nov 2009 18:49:42 GMT

I've been scouring the net for an answer to this, and haven't found an answer yet. This should, I would think, be fairly simple.

I have a website running on IIS7 at www.somesite.net. I want to set up URL rewriting so that I can have www.somesite.net/object1 map to www.somesite.net/objectviewer.aspx?i=object1.

All of the references I have found online refer to rewriting URL's another level down, such as www.somesite.net/object/object1, where the /object/ folder can be used to establish a regex match, but I need to actually accomplish this at the root level.

As an added twist, this obviously should NOT try to remap certain objects that actually exist in the root, such as objectviewer.aspx itself, or the /images/ or /css/ folders.

Has anyone done this? I thought it would be fairly straightforward, and I CAN get URL rewriting to work fine if I go another level down, but I invariably just end up with 404's if I try to apply it at the root.

Embedded Resource - "This is an invalid webresource request."

jeffkretz — Sat, 26 Aug 2006 00:27:06 GMT

This is my first time in dealing with embedded resources, so I'm sure I'm just doing something wrong.

I have a javascript file in my VS 2005 project file, which I've set for Build Action --> Embedded Resource.

Then, to ensure I would name the resource correctly, I used the:

Assembly.GetManifestResourceNames() to get the precise resource names in the file.

One of these was "Topaz.Javascript.AjaxConn.js".

So I added this attribute to the AssemblyInfo.cs:

[assembly: WebResource("Topaz.Javascript.AjaxConn.js", "text/javascript")]

And my page uses this code:

if (Assm.GetManifestResourceInfo("Topaz.Javascript.AjaxConn.js")==null)
throw new Exception("The resource could not be found.");

string resource = this.ClientScript.GetWebResourceUrl(this.GetType(), "Topaz.Javascript.AjaxConn.js");
this.ClientScript.RegisterClientScriptInclude("Topaz.Javascript.AjaxConn.js", resource);

The page renders the include as:

<script src="/WebResource.axd?d=VN0sC0vng-8704Qafmpaw7fc6RWl2EYakKsJpu0PSPldWOMAJ0rNrn2D0QMAovDw0&t=632921217899531250" type="text/javascript"></script>

HOWEVER, the resource is not actually found and the javascript methods are not available to me.

If I type the url in directly:

/WebResource.axd?d=VN0sC0vng-8704Qafmpaw7fc6RWl2EYakKsJpu0PSPldWOMAJ0rNrn2D0QMAovDw0&t=632921217899531250

I get a 404 "The resource cannot be found error".

If I trap the application error, I get a "This is an invalid webresource request." error.

Does anyone have some advice for what I may be doing wrong?

Thanks,
JK

Clearing out all the URL Rewrite before adding the new rewrite

elbasha — Fri, 20 Nov 2009 02:53:22 GMT

Hello,

I have a problem:

If someone goes there, it will be like: site.com/Category/32

So then they go to the home page which is:

The problem now is that the site willl go to: site.com/Category/Home

How do I fix this problem?

Also, all my asp images start with ="~/images", but when there is a .com/category/21, if there is a forward slash after category or any other item in there, my images stop working.

Problem Adding module to in iis 6 for xml files

twathaify — Wed, 18 Nov 2009 21:18:31 GMT

Dears,

I've configured a new HTTP Module in my Project to handle requests for xml files on my machine which has iis 5 installed on it, and its working just fine, after adding the ".xml" to the asp_isapi.dll to the iis 5.

but when I tried to deploy it to our Production server which has windows server 2003 and IIS 6 installed on it, I get the folowing errer when I try to browse XML file:

INTERNET EXPLORER CANNOT DISPLAY THE WEB PAGE

Request QueryString in VB.NET with URL Rewrite

elbasha — Fri, 20 Nov 2009 01:13:57 GMT

I have a URL rewrite as follows:

Now how do I do it in VB.NET when the page loads to receive the categoryID?

ImageButton not loading images with URL Rewrite

elbasha — Fri, 20 Nov 2009 01:09:35 GMT

Some pictures load up and others don't, it is completely random, the image location is correct though the pictures do not all show up as they used to before I added the URL Rewrite

URL Rewrite, how to do it without access to IIS

elbasha — Thu, 19 Nov 2009 19:02:53 GMT

I am hosting a website in a hosting company where I don't have access to any IIS features, how can I add URL Rewrite to my site? How would I add the module, can I add the module by simply going to my VS 2008 and clicking add reference?

Access on a certain page, url from other site.?

chrizztheone — Thu, 19 Nov 2009 11:48:49 GMT

Hello.

I have a page that I want to grant access if the users come from a certains adress ex: http://www.43i89435.com/page.asp, all traffic from this site can access a page on my server, is it possible, dont wont any password or login, or can i implement login/password in a url

ex. http://www.mysite.com/page.aspx?usernamne:password

Best regards

Chrizz

Custom httphandler uploading a gzip file

calkenn — Tue, 17 Nov 2009 21:30:24 GMT

I'm trying to write a service that will upload a gzip file to a server. However, when i save the gzip file on the server it's no longer recognized as a gzip file and it's much larger than the original file. The original file was approx 2K and the uploaded version was almost 4K.

Post code - help from http://stackoverflow.com/questions/219827/multipart-forms-from-c-client:

string contents = File.ReadAllText(fileupload.PostedFile.FileName);

HttpWebRequest req = null;

req = (HttpWebRequest)HttpWebRequest.Create("http://localhost/test/test.ashx");

req .ContentType = "multipart/form-data; boundary=" + PostData.boundary; //boundary = ---------------------------AaB03x

req .Method = "POST";

PostData pData = new PostData();

Encoding encoding = Encoding.UTF8;

Stream stream = null;

pData.Params.Add(new PostDataParam("Id", "123", PostDataParamType.Field));

pData.Params.Add(new PostDataParam("unit", "10", PostDataParamType.Field));

pData.Params.Add(new PostDataParam("typeId", "1", PostDataParamType.Field));

pData.Params.Add(new PostDataParam("filename", fileupload.FileName.ToString(), PostDataParamType.Field));

pData.Params.Add(new PostDataParam("fileupload",fileupload.FileName.ToString(),contents,PostDataParamType.File));

byte[] buffer = encoding.GetBytes(pData.GetPostData());

req.ContentLength = buffer.Length;

stream = req.GetRequestStream();

stream.Write(buffer, 0, buffer.Length);

stream.Close();

HttpWebResponse response = (HttpWebResponse)req.GetResponse();

pData.Params.Add(new PostDataParam("longitude", "-76.4921829", PostDataParamType.Field));

pData.Params.Add(new PostDataParam("deviceId", "NOMNOMNOMNOMNOMNOMNOMNOMNOMNOM", PostDataParamType.Field));

pData.Params.Add(new PostDataParam("time", "1258400855.4", PostDataParamType.Field));

pData.Params.Add(new PostDataParam("filename", fuUpload.FileName.ToString(), PostDataParamType.Field));

pData.Params.Add(new PostDataParam("fileupload",fuUpload.FileName.ToString(),fileContents,PostDataParamType.File));

//pData.Params.Add(new PostDataParam("fileupload", "filename.txt", "filecontents" PostDataParamType.File));

/* ... set the parameters, read files, etc. IE:

pData.Params.Add(new PostDataParam("email", "example@example.com", PostDataParamType.Field));

pData.Params.Add(new PostDataParam("fileupload", "filename.txt", "filecontents" PostDataParamType.File));

byte[] buffer = encoding.GetBytes(pData.GetPostData());

oRequest.ContentLength = buffer.Length;

oStream = oRequest.GetRequestStream();

oStream.Write(buffer, 0, buffer.Length);

oStream.Close();

HttpWebResponse oResponse = (HttpWebResponse)oRequest.GetResponse();

GetPostData:

public string GetPostData()

{

StringBuilder sb = new StringBuilder();

foreach (PostDataParam p in m_Params)

{

sb.AppendLine("--" + boundary);

if (p.Type == PostDataParamType.File)

{

sb.AppendLine(string.Format("Content-Disposition: file; name=\"{0}\"; filename=\"{1}\"", p.Name, p.FileName));

sb.AppendLine("Content-Type: application/octet-stream");

sb.AppendLine();

sb.AppendLine(p.Value);

}

else

{

sb.AppendLine(string.Format("Content-Disposition: form-data; name=\"{0}\"", p.Name));

sb.AppendLine();

sb.AppendLine(p.Value);

}

sb.AppendLine("--" + boundary + "--");

return sb.ToString();

}

Server httphandler code:

public void ProcessRequest(HttpContext context)

{

if (context.Request.Files.Count > 0)

{

context.Response.Clear();

string fileSubmitPath = ConfigurationManager.AppSettings["SUBMIT"].ToString();

filename = "Report";

context.Request.Files[0].SaveAs(fileSubmitPath + filename + ".gz");

}

help with HttpHandler and Response -> forcing Response to write to page but not to end it...

dKorpar — Thu, 19 Nov 2009 07:56:52 GMT

I need behaviour like in php so that I can execute some code show it to user, but page will continue loading and if another work is done it writes some more data...

for example

for (int i = 1; i <= 10; i++)
            {
                context.Response.Write("" + i.ToString() + "<br>");

                //context.Response.WriteSubstitution(
                System.Threading.Thread.Sleep(1000);
            }

this code will have execution time of 10+secs and then it will write all in few milliseconds...

I want different behaviour...

I want that in 1st second I get wroted on page 1

then 1sec nothing and then again 2 and so on...

I should probably rewrite Response or is there any way?

Please help! how to post some data using http post

Lasar — Thu, 19 Nov 2009 06:14:17 GMT

Hi,

       I want to post my details to epn and I need to get back the response from epn.
I using http post and http request for that. The problem is that the string I post is not in correct as to read by epn. I am get the response as "UIncomplete information - ePNAccount" . Because the epn can't able to read the "ePNAccount" which I posted.

       Here is the sample code of what I tried,

      data_str = "<input type='hidden' name='ePNAccount' value='12345' /><INPUT TYPE='HIDDEN' NAME='FirstName' VALUE='Ram' /><INPUT TYPE='HIDDEN' NAME='LastName' VALUE='xxx' /><INPUT TYPE='HIDDEN' NAME='CardNo' VALUE='3447678575674444' /><INPUT TYPE='HIDDEN' NAME='ExpMonth' VALUE='5' /><INPUT TYPE='HIDDEN' NAME='ExpYear' VALUE='09' /><INPUT TYPE='HIDDEN' NAME='Total' VALUE='456' /><INPUT TYPE='HIDDEN' NAME='Address' VALUE='12,sdfdfdf' />"

        Dim uri As New Uri("https://www.eProcessingNetwork.Com/cgi-bin/tdbe/transact.pl")
        Dim request As Net.HttpWebRequest = Net.HttpWebRequest.Create(Uri)
        request.Method = Net.WebRequestMethods.Http.Post
        request.AllowAutoRedirect = True
        request.ContentType = "Application / x - www - Form - urlencoded"
        request.ContentLength = data_str.Length

        Dim sw As New StreamWriter(request.GetRequestStream)
        sw.Write(data_str)
        sw.Close()

        Dim oResponse As Net.HttpWebResponse = request.GetResponse()
        Dim reader As New StreamReader(oResponse.GetResponseStream())
        Dim tmp As String = reader.ReadToEnd()
        oResponse.Close()
        Response.Write(tmp)

        Please help me on how to post data to the url spicified.

            Thank you..............

How to stop excetpion bubbling in Global.asax if you have an "Error Handling Module"

DanielC. — Fri, 16 Jan 2009 09:00:32 GMT

I have an "Error Handling Module" for porcessing errors but I also have some code executed in Global.asax.

The "Error Handling Module" is exectued first (which is fine) in it I call "Server.ClearError()" because I would like to stop the execution of other error handlers.

I found an unexpected behaviour: the global.asax function Application_Error is executed!!!!

Since I called "Server.ClearError()" I was expected to stop exception bubbling.

Could somebody help me?

Kind regards

Daniel

HTTP Custom Handler Help

gligi — Mon, 16 Nov 2009 14:15:51 GMT

Hi.

I have following custom handler (defined using the vs2008) which runs fine on the IIS7:

which maps urls such as /Home/Dummy to /start.aspx?user=Dummy.

The problem is that our applications on the productive enviroment run on the IIS6.

How can i define such a handler on the IIS6 or how can I make it work?

Please help.

Thanks

Markov

ASHX Handler + Threads

eitama — Tue, 17 Nov 2009 08:35:13 GMT

Hello guys,

I have a page named Calculate.ashx, the page will be called every 10 seconds until a complete result is available.
I need to start 3 external applications, each to fetch information for me, the whole thing would take about 3 minutes.

My question is, how do I start 3 threads and "keep in touch" with them from the ashx code, even though the context of the file will end
because I have to send a response to client?

I'm not sure I am clear so i'll try to explain it again in a different way,
when a request arrives to Calculate.ashx for the 1st time, Calculate.ashx will start 3 Threads, each with it's own job.
Now i need to answer the client with ResponseWrite or something, and the ashx file flow will end.
In 10 seconds, the client will again send a request to Calculate.ashx, now Calculate.ashx needs to check the state of the Threads it created 10 seconds ago,
Will these Threads still exist? won't they be deleted because the context ended 10 seconds ago?
How do I keep the "pointers" to those Threads?

Thank you!
Eitam.

Using Embedded Resources Without a UserControl

sisdog — Sat, 14 Nov 2009 19:31:04 GMT

I have a dll project that has HttpHandler code that is referenced in my ASP.Net web project. Now, when a URL comes into my web app that is sent to my HttpHandler, I'm trying to return HTML that has references to resources (images, js, css, etc.) that are embeeded in my dll project. But everywhere I've looked people are describing how to do this WITHIN A USERCONTROL. But I don't have a user control. I just have my IHttpHandler that receives the HttpContext and I build my http response through HttpContext.Response.

This is a code sample from MSDN. It seems like the only way to use the GetWebResourceUrl() method is to have a reference to a ClientScriptManager, which in turn expects to have access to the Page reference. Can I get to this from my HttpContext, which is the only thing I have access to in my HttpHandler?

    // Define the resource name and type.
    String rsname = "script_include.js";
    Type rstype = typeof(ClientScriptResourceLabel);
        
    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;

    // Write out the web resource url.
    ResourcePath.InnerHtml = cs.GetWebResourceUrl(rstype, rsname);

Thanks

Mark

url funda?

myms.net — Mon, 16 Nov 2009 18:05:19 GMT

many times we have seen link as below

http://www.rediffmail.com/cgi-bin/red.cgi?red=http%3A%2F%2Fmyplanetsoft%2Ecom%2Fdownload%2Findex%2Ephp%3Fq%3Dd5468748c51599af21489418923afde2%26f%3Daklog%2Ezip%26s%3Db%26e%3Dxxxxxx%5Fxxxxxx%40rediffmail%2Ecom

which when clicked opens up new windows, here it opens myplanetsoft and let the users download file (here purpose is to use link to download software.

now look at red.cgi?red=......... in the above line. As i feel this is the thing which redirects user to somewhere else but can u tell me how to implement such feature from mywebsite and how a new window with new link appears though in the above link rediffmail.com is the main domain.

Does the red?= helps the link for redirection