Request.UrlReferrer Is Null - How To Set UrlReferrer
Feb 15, 2011in my web application Request.UrlReferrer is null. how can i set UrlReferrer ?
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UrlReferrer Is Always NULL?
Apr 29, 2010Here's the scenario, we've built a url shortener (that we use only to shorten urls for Twitter to our website), and we also track the number of times a url has been clicked. So, for example.. the url might be something like "http://ourshortdomain.com/x9Mr"
Now, in many cases, we see as many as 1000 or 2000 clicks per shortened url, but the referrer is almost always null. How can this be, if the only place we're handing out that shortened url is on Twitter? Shouldn't all the url referrers be coming from Twitter?...
C# - Use Request.UrlReferrer When Determining Referrals?
Sep 9, 2010I came upon an interesting discussion with my team around the use of HttpRequest.UrlReferrer and wanted to solicit feedback from the community. According to the W3C spec:
The Referer[sic] request-header field allows the client to specify, for the server's benefit, the address (URI) of the resource from which the Request-URI was obtained (the"referrer", although the header field is misspelled.) The Referer request-header allows a server to generate lists of back-links to resources for interest, logging, optimized caching, etc. It also allows obsolete or mistyped links to be traced for maintenance. The Referer field MUST NOT be sent if the Request-URI was obtained from a source that does not have its own URI, such as input from the user keyboard.as input from the user keyboard.
The Request.UrlReferrer object does the work of converting referral strings that contain well formed URIs to an object with properties on every request. According to our logs there are requests that come in that contain invalid data in the referral such as:
localhost
app:/BeamBackTest.swf
app:/multtiple.swf
app:/AFriendFeed.swf
ALToolBar
app:/index.html
mhtml:file://C:Documents+and+SettingsUserDesktoporacleWhat+is+a+View+in+Oracle+-+Stack+Overflow.mht
Using Request.UrlReferrer would mean the above cases would be NULL. Is it better to discard the invalid data based on the W3C spec by using Request.UrlReferrer or preserve it by using Request.ServerVariables["HTTP_REFERER"] even though the data may be interesting, but potentially useless.
Security :: Authenticate Users By Request.UrlReferrer?
Sep 25, 2010I am working on an app where users are only allowed access if they click through from certain URLs. I.e. I need to authenticate by using the referral url and I am using
Request.UrlReferrer to achieve this.
I am guessing that the Request.UrlReferrer can be tampered with by malicious users to gain access...
Web Forms :: Page.Request.UrlReferrer Not Working?
Nov 24, 2010What I am trying to solve here is to check for what is previous page's url and compare it. If it is login.aspx then I want to display an WelcomeNote() message. Any help would be deeply appreciated. Here's the codes.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Request.UrlReferrer IsNot Nothing Then
Security :: Request.UrlReferrer Does Not Work In Internet Explorer?
Apr 25, 2010i have a problem in my asp application . Im trying to protect the path for my application using this code :
Uri t = Request.UrlReferrer;
UrlReferrer Shows A Value With Hyperlink But Null With Response.Redirect
Aug 19, 2010I am redirecting between two pages, when I use a hyperlink I get the Page1 in the UrlReferrer field, but using Response.Redirect gives it null.
AFAIK both of them act similarly for a redirection.
Configuration :: Migrating The Request.UrlReferrer.ToString() To The Web.config File
Jan 10, 2011I have the following code in 'main.cs' file where I am checking for a condition
protected void Page_Load(object sender, EventArgs e)
{
if (Request.Form.Get("task") != null && Request.Form.Get("postToURL") != null &&
Request.UrlReferrer.ToString().Substring(0, 31).Equals("http://cs.astra.co.in:4040"))
{
ASCIIEncoding encoding = new ASCIIEncoding();
<SO ON>
Instead of checking for the URL [URL] in 'main.cs', Can I check for the same condition in the 'web.config' file ? If so, How can I do that ?? Is there any way to transfer the part -- Request.UrlReferrer.ToString().Substring(0, 31).Equals[URL] -- into the 'web.config' !!
[Code]....
C# - Use Request.UrlReferrer And When Request.ServerVariables["HTTP_REFERER"]?
Aug 25, 2010Both returns the incoming url, Just to know When to use Request.UrlReferrer and when Request.ServerVariables["HTTP_REFERER"] and why?Currently, in one of my application Urlreferrer is working in my local machine but its not working when went live?Additionally, its most appreciable if anyone can guide any alternative of both Urlreferrer and HTTP_REFERRER?
View 1 RepliesHow To Get Querystring From URLReferrer
Mar 25, 2011I am trying to get the QueryString value like this Request.QueryString("SYSTEM") from a UrlReferrer. I see i can use this Request.UrlReferrer.Query() but it doesn't allow me to specify the exact parameter I could parse the Query() value, but I want to know if it is possible to do something like this Request.UrlReferrer.QueryString("SYSTEM")
View 1 RepliesKnow Previous URL Without Using URLReferrer?
Sep 16, 2010I am developing a .net website using Visual Studio 2008.
Now this webpage should be open only from link available on other website. User should not be able to type the URL directly in browser and should not be able to open this way directly. When user logs in to other website, there is a link for my website and when user clicks on that link, then only my website should be opened up.
Now, I can not use "Request.UrlReferrer" because it is not 100% correct way as there are many ways that URLReferrer can be blocked by browser or by some antivirus or etc, so I cannot use URLReferrer on my webpage to check from where this page is opened up.
Now my question is what is the best way to check on my webpage that my site has been opened up only from that source? I can also pass some querystring from that website but I am not sure how can I make sure that my webpage opens up only from that source, not when user directly types URL in the browser.
Web Forms :: Use UrlReferrer After The User Has Signed-in?
Dec 22, 2010I want to use UrlReferrer after the user has signed-in.
Can UrlReferrer also refer to a webpage outside of the web project? .. this is not what I want...
Page.User Is Null During AJAX Request?
Jul 26, 2010I'm using the MVC2 framework and one of my views has a bit of conditional logic that gets the Page.User.Identity object and does a comparison with other values to determine what to display.That all works fine on the initial page load, but when I make an AJAX call to get partial page updates (I'm doing this all manually with YUI3, not the .NET AJAX stuff) the Page.User object is always null.
View 1 RepliesArams Page.Request.Form Is Null - Have Literal Control In My Masterpage
Jun 29, 2010i have an odd thing with the Request.Params / Request.Form.i have a literal control in my masterpage.
[Code]....
So far pretty basic i thought. But to my suprise the geLocation turns out to be null. The control wasn't found...
when i then use a link from the dashboard page to another page which has the same masterpage, everything on that page seems to work fine.
C# - Why Is The Call To Request.QueryString["ReturnUrl"] Returning NULL
Jan 29, 2010(This is a more narrow question)
In my asp.net MVC action, I am looking if the ReturnUrl value is in the URL.
My Url looks like this:
[URL]
In my action, I am looking if that querystring value exists, and it is returning NULL?? How can this be?
The code:
if(Request.QueryString["ReturnUrl"] != null)
{
}
Tracing through the application, it is just skipping the if statement's body i.e. it is NULL.
How can this be explained?
[URL]
HttpHandlers / Modules :: HttpModule That Alters Request.QueryString And Request.Form?
Jan 27, 2011We're trying to implement functionality that intercepts, inspects, and alters if needed data in the Request.QueryString and Request.Form collections.
Since Request.QueryString and Request.Form are readonly, is it possible to use a HttpModule to do this without Reflection or Response.Redirect?
We're thinking that we can construct a new HttpRequest, and replace the original one. Would there be any implications in doing this?
I know mocking this object is impossible without using HttpRequestWrapper, but wasn't sure whether ASP.NET sets other things beyond the constructor.
WCF / ASMX :: Request Failed With HTTP Status 400: Bad Request Accessing Web Service
May 15, 2010I 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
View 4 RepliesAccessing IIS's Request Handling Pipeline To Inject A Request And Get The HTML Response?
Dec 9, 2010Is it at all possible to inject a request into IIS for a page, have IIS and ASP.Net handle it as normal, but get the response as html handed back to me programmatically?
Yes, I know that I could connect to port 80 using WebRequest and WebResponse, but that becomes difficult if you are accessing the IIS server from the same physical machine (loopback security controls et al).
Basically, I want to inject the request (eg for [URL]) between the points at which IIS would normally talk to the browser, and the point at which it would route it to the correct ASP.Net application, and get a response back from IIS between the points at which ASP.Net/IIS applies the httpfilters and hands the html back to the browser.
I'm predominantly working with IIS7 so if there is a solution that works just for IIS7 then thats not an issue.
MVC :: Request.Params Request.Form Not Working In Internet Explorer 8?
Jun 29, 2010This is a input
<input type="image" src="<%=Url.Content("~/images/shopping-cart.jpg")%>" alt="shopping cart" id="btnshoppingCart" name="btnshoppingCart" value="shoppingCart" />
when i browse the page with firefox and click on the input Request.Params["btnshoppingCart"] != null or Request.Form["btnshoppingCart"] != null is statisfied.
When i browse the same page with internet explorer 8 and click on the same input Request.Params["btnshoppingCart"] != null or Request.Form["btnshoppingCart"] != null is not satisfied. When i used the watch i saw that there is no key by the name of "btnshoppingCart" in either Request.Form or Request.Params if input is clicked from internet explorer. However when it is clicked from firefox there is value "shoppingCart" inside Request.Form and Request.Params against "btnshoppingCart" key. One more strange thing that i observed was that are two keys "btnshoppingCart.x" and "btnshoppingCart.y" inside both Request.Form and Request.Params whenver clicking is done from both internet explorer and firefox. This is happening against all inputs of type image irrespective if the input is present inside a html form or not. Forms are created like this
<% using (Html.BeginForm("Action", "Controller", FormMethod.Post)){%>
The version of internet explorer is 8.0 and firefox is 3.6.6
Determine If A HTTP Request Is A Soap Request On HttpApplication.AuthenticateRequest
Jan 21, 2010I 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).
First Request Fails With HTTP 400 (Bad Request) After Reading HttpRequest.InputStream
Oct 24, 2010I 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();
How To Bypass Request Size и Request Processing Time Restrictions
Mar 1, 2011I want to component to upload large filesP.How can I bypass request size и request processing time restrictions?
View 4 RepliesPHP Curl Request To IIS Results In Request Format Is Invalid?
Apr 4, 2011I am trying to use curl to access 3rd party webservice, I used the following code which works well if I try it on my own linux server, the data is being sent ok, but the IIS on the 3rd party server returns an error.
$longdata is a long string of data, maybe over 1000 characters long the 3rd party has many working clients with various implementations so the problem is on my side. what do I need to add to the request in order to get this through ?
<?php
$c = curl_init();
// curl_setopt($c, CURLOPT_HTTPHEADER, array('Expect:'));
curl_setopt($c, CURLOPT_URL, 'http://XXX.com/test/index.asmx');
curl_setopt($c, CURLOPT_POST, 1);
curl_setopt($c, CURLOPT_HEADER, 1);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
$post = array('param1' => 'XXXX', "param2" => "Y", "Param3" => $long_data);
curl_setopt($c, CURLOPT_POSTFIELDS, $post);
$response = curl_exec($c);
echo $response;
/*
Response:
HTTP/1.1 100 Continue
HTTP/1.1 500 Internal Server Error
Date: Tue, 05 Apr 2011 14:11:51 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/plain; charset=utf-8
Content-Length: 100
Request format is invalid: multipart/form-data; boundary=----------------------------5d738237d9e0.
*/
?>
Forms Data Controls :: Displaying A Null Or Empty Cell For A Null Datetime Database Value In Gridview?
Dec 6, 2010I have setup my business object to have a create_date and edit_date members both datetime datatypes. My company want to display the create_date and edit_date fields in a gridview for each transaction. The problem i have is that after insterting a record it will have a valid create_date but no edit_date and when displayed in the gridview it defaults to datetime.minvalue (My default). How on earth do i show an empty field in my gridview for a null datetime field in the database?
I am using similar architecture to the Imar Spaanjaars example of a tiered solution. With a few small tweeks it has worked well for me for ages. I am passing a List<Database> to my object datasource which connects to my gridview.
SQL Server :: Inserting Null Value Into Foreign Key Table With Allow Null Enabled?
Oct 2, 2010I have 2 table Table A, Table B.
Table A - Parent Table
ID - Uniqueidentifier not null(PK)
Table B -Child Table
ID - uniqueidentifier null(FK, TableA)
I have a stored procedure to insert data into Table B, but when I tried to insert a null value into column ID of table B, this error came up:
The INSERT statement conflicted with the FOREIGN KEY constraint "FK_tableB_tableA". The conflict occurred in database "database name", table "table A", column 'ID'.
The statement has been terminated.
The insert statement in asp.net is like so:
sqlcommand.parameter.add(New Sqlparameter("ID", Nothing))
I am guessing adding nothing to the null value column is the problem, but i don't know how to fix it... The INSERT statement conflicted with the FOREIGN KEY constraint "FK_tableB_tableA". The conflict occurred in database "database name", table "table A", column 'ID'.