How to limit access by time?

Dear community,

I need to handle requests for a particular domain in a different way. I usually apply a few simple conditions, for example, requests must arrive with the xpto.com header to be forwarded to the pool.

• I use a BIG-IP LTM 13.0.0.

Now I need a particular domain, if it is called more than 50 times in 10 minutes by a same IP, block this IP for 30 minutes.

From what I've been researching I believe that the FLOW_INIT function helps me with what I need, but I still can not reach my goal.

Below is a simple example of what I use to test:

when HTTP_REQUEST {
    if {[HTTP::host] equals "drop.test:8080"} {
        switch -glob [HTTP::uri] {
            "/test/*" {
                log local0. "/test/ - accept - source: [IP::remote_addr] - uri: [HTTP::host][HTTP::uri]"
                HTTP::respond "Test ok!"
            }
            "/drop/*" {
                log local0. "/drop/ - accept - source: [IP::remote_addr] - uri: [HTTP::host][HTTP::uri]"
                HTTP::respond "Drop ok!"
            }
            default {
                log local0. "reject - source: [IP::remote_addr] - uri: [HTTP::host][HTTP::uri]"
                reject
            }
        }
    }
}