How to redirect port 8443 to 8444

You can use a Policy for this, which is quicker and easier to manage. If you really want to use an iRule to redirect all request from https://abc.domain.com:8080 to https://abc.domain.com:8444:

when HTTP_REQUEST {
    HTTP::redirect https://abc.domain.com:8444[HTTP::uri]
}

If you only want to redirect /productanalytic/ then:

when HTTP_REQUEST {
    if {[HTTP::uri] starts_with "/productanalytic/"} {
        HTTP::redirect https://abc.domain.com:8444[HTTP::uri]
    }
}