Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

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Ian_Smith's avatar
Ian_Smith
Ret. Employee
Jul 13, 2007

HTTP_RESPONSE event failure

does anyone have an explanation to explain the following behavior?

 

 

 

when making an HTTP POST, the client (IE+.NET) sends the HEADERS ONLY in the first packet (without respect of content length), the

 

IIS6 server responds immediately (this occurs before the content-length number of bytes has been processed by BIG-IP) and the HTTP_RESPONSE event in the iRule isn't triggered.

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  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Feb 13, 2008
    Hi Aragorn,

     

     

    The HTTP_RESPONSE event is triggered when the server response headers are parsed. As that doesn't happen with cached responses, you can use the CACHE events/commands instead.

     

     

    Can you take a look at the related wiki pages and start a new post if you have questions?

     

     

    Cache Commands (Click here)

     

     

    Cache events (Click here)

     

     

    Thanks,

     

    Aaron