Need Help in iRule to Modify HTTP header parameter.

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1

I need to Write iRule where I want to change the HTTP header parameter from

  1. sname to Sname
  2. uaccount to Uaccount
HTTP Header
POST /URI PATH/ HTTP/1.1\r\n
sname : BEVI9999\r\n
uaccount : \r\n
\r\n

is it correct iRule

when HTTP_REQUEST {
  HTTP::header replace sname SName
  HTTP::header replace uaccount UAccount
}

expected output

HTTP Header
POST /URI PATH/ HTTP/1.1\r\n
SName: BEVI9999\r\n
UAccount: \r\n
\r\n

Above iRule is correct for the requirement?

2

HTTP headers are not case sensitve in correctly implemented HTTP servers (see https://www.rfc-editor.org/rfc/rfc9110.html#name-field-names) , so the BIG-IP iRule command to handle them is also case insensitive (https://clouddocs.f5.com/api/irules/HTTP__header.html).

You’ll have to first grab the header names (with any case), delete the headers (with any case), then re-add new headers (with your desired case). Something like this should work:

when HTTP_REQUEST {<br>  set sname [HTTP::header value sname]<br>  set uaccount [HTTP::header value uaccount]<br><br>  HTTP::header remove sname<br>  HTTP::header remove uaccount<br><br>  HTTP::header replace SName $sname<br>  HTTP::header replace UAccount $uaccount<br>}

3

instead of irules scripting, you can use gui based local traffic policy
https://community.f5.com/t5/technical-articles/to-irule-or-not-to-irule-introduction-to-local-traffic-policies/ta-p/279536