irule to insert action parameter inside Content-Type header for xml request

Hi Mohanad,

the iRule below should do the trick for your.

It uses the STREAM profile to search on POST-Request for the regex pattern:

[^<|\r\n|\n]*

If a match is found the

STREAM_MATCHED

The action value get then extracted and stored into the

$action_value

[URI::basename]

The iRule will finally replace the

Content-Type

when HTTP_REQUEST {
    if { ( [HTTP::method] eq "POST" )
     and ( [HTTP::path] ends_with "/Service.svc" ) } then {
        set stream_action 1
        STREAM::expression {@[^<|\r\n|\n]*@@}  
        STREAM::enable
    } else {
        set stream_action 0
        STREAM::disable
    }
}
when STREAM_MATCHED {
    set stream_action 2
    set action_value [URI::basename [STREAM::match]]
    log local0.debug "Found the action = $action_value"
    STREAM::replace
}
when HTTP_REQUEST_SEND {
    clientside {    
        if { $stream_action == 0 } then {
             Let the request pass...
        } elseif { $stream_action == 1 } then {
            HTTP::header insert "Transfer-Encoding" "chunked"
        } else {
            HTTP::header remove "Content-Type"
            HTTP::header insert "Content-Type" "application/soap xml; charset=utf-8; action=http://tempuri.org/IACHService/$action_value"
            HTTP::header insert "Transfer-Encoding" "chunked"
            log local0.debug "New Header Value: [HTTP::header value "Content-Type"]"
        }
    }
}

Note: You need to assign the default STREAM profile to your virtual server.

Cheers, Kai