Microsoft KB Archive/290899

= BUG: XMLHTTP Fails to Send Cookies from a Client =

Article ID: 290899

Article Last Modified on 10/16/2002

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APPLIES TO


 * Microsoft XML Parser 2.6
 * Microsoft XML Core Services 4.0
 * Microsoft XML Parser 3.0 Service Pack 1
 * Microsoft XML Core Services 4.0

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This article was previously published under Q290899



SYMPTOMS
The MSXML2.XMLHTTP object does not use cookies per se, but you can use it to send your own cookies from a client to a server. When you use the MSXML2.XMLHTTP object to send your cookies from a client, you may find that your cookies are empty when they arrive at the server.

NOTE: Usually a server sends and receives cookies. In this case, you may be submitting cookies from a client so that you do not have to reauthenticate the client.



RESOLUTION
To work around this problem, invoke the setRequestHeader method twice for the cookie.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.



Steps to Reproduce Behavior
 Create the Windows script to send the cookie:  Create a new text file by using Windows Notepad or another text editor.  Paste the following code into the text file: Dim http set http = WScript.CreateObject(&quot;MSXML2.XMLHTTP&quot;) http.open &quot;GET&quot;, &quot;http://localhost/user.asp&quot;, false http.setRequestHeader &quot;Cookie&quot;, &quot;cookietest=testvalue&quot; 'http.setRequestHeader &quot;Cookie&quot;, &quot;cookietest=testvalue&quot; http.send WScript.Echo http.status WScript.Echo http.responseText  Save the text file as Cookie.vbs in a folder of your choice.  Create the Active Server Pages (ASP) page to receive and return the cookie:  Create a new text file by using Windows Notepad or another text editor.</li>  Paste the following code into the text file: <% Response.Write &quot;Cookie: &quot; & CStr(Request.ServerVariables(&quot;HTTP_COOKIE&quot;)) %>                       </li> Save the text file as User.asp in the C:\InetPub\WWWRoot folder or another physical path that corresponds to the home folder of your default Web site.</li></ol> </li> At a command prompt, type the following to execute the Visual Basic Scripting Edition (VBS) script by using the Windows Scripting Host. Change the location of the file to refer to the folder where you saved the Cookie.vbs file: wscript c:\cookie.vbs

The cookie string that is returned is empty.</li>  In the file Cookie.vbs, uncomment the following line: 'http.setRequestHeader &quot;Cookie&quot;, &quot;cookietest=testvalue&quot; </li> Save Cookie.vbs.</li>  Again run Cookie.vbs by using the following: wscript c:\cookie.vbs Note that the cookie is returned successfully. </li></ol>

Additional query words: cookie xmlhttp msxml2

Keywords: kbbug kbfix KB290899

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