Removing header "Connection:keep-alive" for an application in F5

Preet_pk I believe the following is what you're looking for.

when HTTP_REQUEST priority 500 {

    switch -- [string tolower [HTTP::host]] {
        labred.local.ae {
            HTTP::header remove Connection
            pool Lab-red-pool
        }
        labblue.local.ae {
            HTTP::header remove Connection
            pool Lab-blue-pool
        }

}