need to rewrite HTTP 200 status code to HTTP 503

I am running version 10.2.3 Build 112.0. The iRule correct re-writes from HTTP 200 to 300 without this line:

 

 

HTTP::header replace Retry-After: 10800

 

 

However, as soon as I add that line to the iRule, the VIP will no longer serve traffic as mentioned above:

 

when HTTP_REQUEST_SEND {

 

HTTP::header replace Retry-After: 10800

 

TCP::collect 12

 

 

}

 

when SERVER_DATA {

 

if {[findstr [TCP::payload 12] "200"] == "200"} {

 

TCP::payload replace 9 3 "503"

 

}

 

}

 

 

 

So, it appears that the HTTP_REQUEST_SEND is working.

 

Thanks for your help.