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Q199806: IIS: Headers Containing White Spaces May Return a 404 Error

Article: Q199806
Product(s): Internet Information Server
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): 
Last Modified: 16-JAN-1999

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The information in this article applies to:

- Microsoft Internet Information Server 4.0 
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SYMPTOMS
========

If a request to an Internet Information Server (IIS) Web server contains a
"HOST:" entry that contains a space between the HOST and the colon (HOST :), the
Web server will return a 404 error message (not found). This information is
found in the headers of the request sent by the browser to the Web server. This
problem does not occur with a standard browser (Netscape or Internet Explorer).

CAUSE
=====

All "headername:" information presented to Internet Information Server
(including 'host:') is assumed to not contain a space. There is no HTTP error
code for "Server Not Found," therefore the server returns a 404 error message.


Additional query words:

======================================================================
Keywords          :  
Technology        : kbiisSearch kbiis400
Version           : winnt:4.0
Issue type        : kbprb
Solution Type     : kbpending

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