Redirecting http request to external url via proxy

@Drew: are you saying that you're creating a composite site by using content from multiple origins?

If so, you could also accomplish that by creating pools for each of the environments. You can then select a pool based on the URI. The VIP for port 443 can be configured to pull that information from pools for any port (using port translation).

The iRule would look like this:

when HTTP_REQUEST {

    if { [string tolower [HTTP::path]] starts_with "/news-and-blog/" } {

        pool cloud_news-and-blog_80_pool
        persist none

    } else {

        pool pool_iab3
        persist none

    }

}