Http - Extract Header Info From A Get Request On A Remote URL?

Sep 10, 2010

I want to perform a get request on a remote URL and then extract the headers returned.

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How To Authenticate An HTTP Request To Remote Server That Can Be Utilize On End User Browser

Jul 26, 2010

There is one page which is actually a streaming to The Axis IP camera which spits MJPEG output.It requires user to log in with the user name/password promp on browser .I am using this stream to show video directly on a web page.It shows video correctly but asks user to provide correct user name and password set for the camera,I tried to logging in to this camera on server side using HTTP requests and then I realized I authenticated server request not the browser the end user is using.

So what I want is a method server side or client side, that can allow me to log-in to camera automatically when my end-users visit this page.I am using asp.net with c# 2005

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HttpHandlers / Modules :: Adding HTTP Request Header - Operation Not Supported?

Jul 20, 2010

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);
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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.

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Calling Remote Web Service -- "The Request Failed With HTTP Status 401: Unauthorized"?

Jun 19, 2010

I am calling a remote service and authenticating using a certificate. When testing with a Console App, everything works fine. When calling from an ASP.NET Website (.NET 4.0, IIS7) I receive a response code of 401 -- Unauthorized.I am adding the certificate using code such as:

var client = new TheGeneratedProxy();
client.ClientCertificates.Add(new X509Certificate("D:cert.pfx", "myPassword"));

(NOTE: I have also loaded the .pfx into the local Certificate Store using IE. The certificate is loaded into my "Personal" store -- so I suspect this to be the problem, since the Website will be running under a different account.)

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WCF / ASMX :: Webservice Header / Error Server Did Not Recognize The Value Of HTTP Header SOAPAction?

Oct 30, 2010

I call a webservices from my javascript and im getting response as error.

Server did not recognize the value of HTTP Header SOAPAction:

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C# - How To Simulate Http Request Using WatiN With Specific HTTP Referrer And Query String

Dec 6, 2010

When I use WatiN to go to a specific web page, how can I fake the HTTP referrer with a query string (i.e. request is from google search with query string q=search_term)? So I can verify that the response header has the 301 redirect for specific referrer URL.

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HttpHandlers / Modules :: Redirect A Page From Http To Https Using Http Module Begin Request Handler?

Jul 15, 2010

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

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WCF / ASMX :: Request Failed With HTTP Status 400: Bad Request Accessing Web Service

May 15, 2010

I have a webservice which works 100% fine on my developer machine. Where Web Service is installed on LOCALHOST on my developer machine,Then i went to my servers, I installed webservice on one server and map it with the server where the website is hosted, Then i tried accessing this service using BROWSER from my web server, it worked fine, That means the mapping was done perfect.Then i run my program on web server (website). It worked fine on page1, then on page2, but when i did the same and call same function on page3, It popped me any error of

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Determine If A HTTP Request Is A Soap Request On HttpApplication.AuthenticateRequest

Jan 21, 2010

I there a way to know if a request is a soap request on AuthenticateRequest event for HttpApplication? Checking ServerVariables["HTTP_SOAPACTION"] seems to not be working all the time.

public void Init(HttpApplication context) {
context.AuthenticateRequest += new EventHandler(AuthenticateRequest);
}
protected void AuthenticateRequest(object sender, EventArgs e) {
app = sender as HttpApplication;
if (app.Request.ServerVariables["HTTP_SOAPACTION"] != null) {
// a few requests do not enter here, but my webservice class still executing
// ...
}
}
I have disabled HTTP POST and HTTP GET for webservices in my web.config file.
<webServices>
<protocols>
<remove name="HttpGet" />
<remove name="HttpPost" />
<add name="AnyHttpSoap" />
</protocols>
</webServices>
Looking at ContentType for soap+xml only partially solves my problem. For example,
Cache-Control: no-cache
Connection: Keep-Alive
Content-Length: 1131
Content-Type: text/xml
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: ro
Host: localhost
mymethod: urn:[URL]

Some clients instead of having the standard header SOAPAction: [URL], have someting like in example above. "mymethod" represents the method in my web service class with [WebMethod] attribute on it and [URL] is the namespace of the webservice. Still the service works perfectly normal. The consumers use different frameworks (NuSOAP from PHP, .NET, Java, etc).

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First Request Fails With HTTP 400 (Bad Request) After Reading HttpRequest.InputStream

Oct 24, 2010

I develop an asmx web service (i.e. ASP.NET 2.0). There's a piece of code that may read the contents of the HTTP request (via HttpContext.Current.Request.InputStream) while processing it. I realise that InputStream may only be read once for a request, and I make sure I never try to read it more than once.

The problem seems to be that if InputStream happens to be read during the early stages of the application's lifecycle (e.g. after pskill w3wp, during Application_Start), the HTTP request fails with a HTTP 400 - Bad Request error, with no explanation given, no exception thrown and no entry in the httperr log. If it is read later (e.g. within the web method itself), requests run fine whether InputStream is read or not. Application_Start runs fine if InputStream isn't read.

Is this some sort of ASP.NET bug? IIS bug? Or am I doing something wrong by daring to read InputStream? And if so, is there another way to get a look at the "raw" contents of the request without disturbing the inner workings of IIS/ASP.NET? In short, adding this code within Application_Start is enough to reproduce this error: using (StreamReader reader = new StreamReader(HttpContext.Current.Request.InputStream))reader.ReadToEnd();

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Get Info About Http Post Field Order?

May 17, 2010

Is it possible to get information about post field order in ASP.NET? I need to know whether some field was the last one or not.

I know I can do it through Request.InputStream, but I'm looking for a more high level solution without manually stream parsing.

Generally I'm doing testing of http post sent by my application and there is no practical usage for this in ASP.NET.

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Printing A Web Page Without The Header And Footer Info?

Mar 11, 2010

VWD 2008 Express. Visual Basic.

I have an aspx page that I populate to create a diploma. I thn have code that does a "window.print." Unfortunately, the diploma prints with the name of the page and "Page 1 of 1" at the top and the address of the page and the date printed at the bottom. These ruin the diploma. How can I print this page programmatically WITHOUT the header and footer info?

Here is the code I use to populate the diploma page and print it:

[Code]....

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Clear Text Box Info From Host Header?

Apr 16, 2010

How can i clear the information in a text box from the host header so it is empty on post back (not emptied after post back? I know that Enableviewstate doesn't work for text boxes.

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Web Forms :: Get Remote Site Url From HTTP POST?

Oct 3, 2010

I have a remote website form which sends variables to a page of my asp website. This is a standard form with http post. How do I access the url which sent the request to the page? Is this an environment variable? Http_referrer?

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Pass Value From One App To Another Via HTTP Header?

Jun 15, 2010

We are implementing a single sign on mechanism in an enterprise environment, where the token is shared between applications using HTTP header. Now, in order to do the integration test, I need to write an application to simulate this. Is there any way in ASP.NET where I can redirect to another web-page and pass a custom HTTP header in the process?

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Response - Get Custom Http Header?

May 14, 2010

I have an asp.net appliction on the one server. There I've added code on server-side in Page_Load:

Response.AddHeader("key", "password-key-from-hotel");

On the client side I have a form:
<form ... action="www.link-to-another-domaint" >
<input type="hidden" id="asd" value="fgh" >
....
</form>
<script type="text/javascript">
document.forms[0].submit();
</script>

Then on the other domain - there is also my other application - I'm trying to get the hedaer "key" by this code:

Request.Headers["key"].ToString();

But there is no such header. Is there is a desicion? Where is my mistake?

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C# - Throttle Parallel Request To Remote Api?

Jul 14, 2010

I'm working on an ASP.NET MVC application that uses the Google Maps Geocoding API. In a single batch there may be upto 1000 queries to submit to the Geocoding API, so I'm trying to use a parallel processing approach to imporove performance. The method responsible for starting a process for each core is:

public void GeoCode(Queue<Job> qJobs, bool bolKeepTrying, bool bolSpellCheck, Action<Job, bool, bool> aWorker)
{
// Get the number of processors, initialize the number of remaining
// threads, and set the starting point for the iteration.
int intCoreCount = Environment.ProcessorCount;
int intRemainingWorkItems = intCoreCount;

[Code]...

This is based on patterns document I found on Microsoft's parallel computing web site. The problem is that the Google API has a limit of 10 QPS (enterprise customer) - which I'm hitting - then I get HTTP 403 error's. Is this a way I can benefit from parallel processing but limit the requests I'm making? I've tried using Thread.Sleep but it doesn't solve the problem.

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IIS7 Rewrite - Strip HTTP Header?

Apr 1, 2010

Is it at all possible to use IIS7's rewrite capability in web.config to strip a particular HTTP header from a client request?We have an application that makes an HTTP POST to our website, and apparently the request contains the HTTP Expect header. Previously this was not a problem, but we've switched hosts and now the site is returning HTTP error 417 Expectation failed. So the real solution is to fix the software so it doesn't send the Expect header, but that can't happen soon enough for the folks in charge, who'd like to come up with an immediate web-based fix.I've used ISAPI_Rewrite before and I've read that it can strip a header, and the new host claimed they had ISAPI installed... but that seems to have been a lie, as I cannot get it to work, and support's only response on the subject is "use IIS7 Rewrite instead."

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AJAX :: Add Http Header When Use Call Web Service?

Aug 4, 2010

I have one ajax call web service, and want to add some http headers using javascript, can we do that use setrequestheader in ms ajax?This is my javascript

[Code]....

[Code]....

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How To Hunt Down HTTP Request

Feb 25, 2010

It uses asp.net (webforms), bunch of jquery plugins and whatnot.

Problem: there's unnecessary HTTP request to localhost/undefined and that makes every request take ~1s longer than needed.

Question: is there any tactic to find guilty code?

Clue: undefined makes me think that there's JS involved.

Firebug log:

GET /undefined HTTP/1.1
Host: localhost:17817
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; lv; rv:1.9.2) Gecko/20100115
Firefox/3.6
Accept: image/png,image/;q=0.8,/*;q=0.5
Accept-Language: lv,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-13,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://localhost:17817/Default.aspx

if you right click a line in the code, it gives you a conditional breakpoint. Check the name of the variable that has the URL value, and set a condition when typeof URL === 'undefined' or url === 'undefined' and look at the stack

Just set breakproint at line 3400 (with no conditions). It does not go through there.

3397 ajax: function( s ) {
3398 // Extend the settings, but re-extend 's' so that it can be
3399 // checked again later (in the test suite, specifically)
3400 s = jQuery.extend(true, s, jQuery.extend(true, {}, jQuery.ajaxSettings, s));

Narrowed issue down a bit => commented out 1 ascx controller that renders some images and uses gallerific jquery plugin and magic request dissapeared.

Problem was with galleriffic plugin initialization. It couldn't find anchor and it's href for creating thumbnails when there were no images or something. It's cool now...

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C# - Http Request Issue In Asp.Net

Jul 24, 2010

I am using C# + VSTS 2008 + .Net 3.5 + ASP.Net + IIS 7.0 + ADO.Net + SQL Server 2008. I want to develop an ASP.Net aspx page which has the following function,

1 It could accept 3 Url parameters param1, param2 and param3, and the request looks like this,

http://mysite.com/foo.aspx?parame1=abc¶m2=def¶m3=ghi

2 When the page is responsed to client browser, I want to display a text input and a submit button nearby in the result html page, and value of text input is the same as param1, in this sample, abc will be displayed in text box, in the browser address bar, I want to keep the original long url http://mysite.com/foo.aspx?parame1=abc¶m2=def¶m3=ghi;

3 When the user change the value in text input, and click submit button, I want to send this request again to foo.aspx, and changing the param1 value to the value which user entered in text input, and at the same time, keep values of parame2 and param3 the same as last request's response. For example, when user requests http://mysite.com/foo.aspx?parame1=abc¶m2=def¶m3=ghi, and the page displays, when user changes text input from abc to google, the new request will be http://mysite.com/foo.aspx?parame1=google¶m2=def¶m3=ghi

Any reference samples? My question is I do not know how to implement so many functions in one aspx page.

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Generating HTTP Request?

Aug 21, 2010

In how many ways can an HTTP request be generated?

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Get MAC Address From HTTP Request

Jul 22, 2010

picking up the Users MAC address from the HTTP request.

The users will be from OUTSIDE my network.

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Html - IIS 7, .Net 4: Server Cannot Append Header After HTTP Headers Have Been Sent?

May 19, 2010

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.

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C# - Adding A Http-Header In A HttpModule And Read It Out From A Page

Oct 6, 2010

I've tried to write my own HttpModule (IHttpModule) that adds a Header like that:

public class MyModule: IHttpModule
{
public void Init(HttpApplication c)
{
c.BeginRequest += delegate{c.Response.AddHeader("MyHeader", "MyValue");};
}
public void Dispose(){}
}

and tried to read in a aspx page like that:

var x = Request.ServerVariables["MyHeader"];

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