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

Forum Discussion

sirwin_111540's avatar
sirwin_111540
Icon for Nimbostratus rankNimbostratus
Dec 01, 2009

Cannot get HTTP::header at to work

All -     I can't get [HTTP::header at] to work at all.     I searched for examples of [HTTP::header at] on the forum; I found a couple of examples, both of which are more soph...
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hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Dec 01, 2009
Hi Sirwin,

 

 

I think this is a bug (or at least change in functionality). [HTTP::header at 0] works in 9.3.1 (and did in 9.4.x if I remember correctly). From your testing and a quick check on a 10.0.1 unit, it does not work in 10.01. You could open a case with F5 Support to report the issue and find out why this is.

 

 

If you want help figuring out a possible workaround, could you post more information on what you're trying to do?

 

 

Thanks,

 

Aaron