X-Forwarded in F5

Just notice you also mentioned X-Forward-Proto and X-Forwarded-Port, if you want that you will have to either use a local traffic policy or an iRule. A real easy irule to add those is this.

when CLIENT_ACCEPTED {
    if { [PROFILE::exists clientssl] == 1 } {
        set protocol "https"
    }
    else {
        set protocol "http"
    }
}

when HTTP_REQUEST {
    HTTP::header replace X-Forwarded-Proto $protocol
    HTTP::header replace X-Forwarded-Port [TCP::local_port]
}