Microsoft KB Archive/313056

= A GET Request After a POST Request Does Not Work If There Is an Extra CRLF in the Content =

Article ID: 313056

Article Last Modified on 10/29/2007

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APPLIES TO


 * Microsoft Internet Security and Acceleration Server 2000 Standard Edition

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This article was previously published under Q313056



SYMPTOMS
If a Web browser or a similar client that uses the Internet Security and Acceleration (ISA) Server Web Proxy service sends a request (such as a GET or similar request) immediately after a POST request that contains an extra pair of 0d0a bytes (0x0d 0x0a, or CRLF), that request does not succeed and returns HTTP error 400.

Note that the ISA Server Web Proxy service ignores the extra bytes in the POST request in the outbound direction only if you have applied the hotfix that is described in the following Microsoft Knowledge Base article:

300707 Invalid Content-Length Header May Cause Requests to Fail Through ISA Server

Without the hotfix, and in the inbound direction, ISA Server rejects all requests in which the content length is different from the length that is specified in the &quot;Content length&quot; HTTP header. Without the hotfix, the POST request also may not succeed.



RESOLUTION
To resolve this problem, obtain the latest service pack for ISA Server 2000. For additional information about the latest service pack, click the article number below to view the article in the Microsoft Knowledge Base:

313139 How to Obtain the Latest Internet Security and Acceleration Server 2000 Service Pack



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

This problem was corrected in ISA Server 2000 SP1.

Keywords: kbproductlink kbbug kbenv kbfix KB313056

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