URL Rewrite without changing the URL

Try below irule & update if facing issue.

        when HTTP_REQUEST {
    set host [string tolower [HTTP::host]]
            STREAM::disable
        }
    when HTTP_RESPONSE {
         Check if response type is text and host isn't null
        if {[HTTP::header value Content-Type] contains "text" and $host ne ""}{
        STREAM::expression "@https://2.2.2.2/T001/mds@http://1.1.1.1/insight@" }
        STREAM::enable
    }