How to change HTTP method from OPTIONS to POST?

Question

We have a webapp that sends a HTTP:method "OPTIONS" to another website &nbsp;
The other website returns 400 bad request for method OPTIONS. &nbsp;
If I manually change the OPTIONS to POST the transactions is successful (manually by using fiddler)&nbsp;
I cannot change the method on the sending webapp server &nbsp;
Since that, I must change it using BIGIP &nbsp;
How can BIGIP convert method OPTIONS to POST?

&nbsp;I need the other web server sees POST request and not OPTIONS request. &nbsp;
Any solution will be good. iRule/streaming etc... &nbsp;&nbsp;
Thank you,&nbsp;
Noam.&nbsp;

stanislas_piro2 · Answer

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"
    }
}

m_2 · Answer

Hello Noam,
would you mind telling the details about webapp that sends a HTTP:method "OPTIONS.
Just to know the application name.

Thanks,
-Sam

noamrotter · Answer

It's a "solution" written for us and uploaded by developers to our old CRM 2011 system.
We couldn't ask the developers to make any changes to their solution.

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How to change HTTP method from OPTIONS to POST?

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