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

Forum Discussion

NoamRotter's avatar
NoamRotter
Icon for Altostratus rankAltostratus
Apr 17, 2016

How to change HTTP method from OPTIONS to POST?

We have a webapp that sends a HTTP:method "OPTIONS" to another website   The other website returns 400 bad request for method OPTIONS.   If I manually change the OPTIONS to POST the transact...
application delivery
irules
LTM
stan_piron's avatar
stan_piron
Icon for Cumulonimbus rankCumulonimbus
Apr 18, 2016

Hi,

it is not possible to change HTTP Method...

The method OPTIONS is dedicated to answer which are supported methods by the server.

try this irule to answer with the list of supported methods:

when HTTP_REQUEST {
    if {[HTTP::method] equals "OPTIONS"} {
        HTTP::respond 200 -version "1.1" noserver \
            "Allow" "OPTIONS, TRACE, GET, HEAD, POST" \
            "Public" "OPTIONS, TRACE, GET, HEAD, POST" \
            "Connection" "Close"
    }
}