URL needs to be in certain case letters

I should have read your question a little close before I responded the first time. Here is an example where the user is redirected with the proper case for WebCenter and includes the rest of the URL. I haven't actually tested this, so there could be some syntax issues.

when HTTP_REQUEST {
    if { [HTTP::uri] starts_with "WebCenter" } {
         URL is correct case, do nothing"
    }
    elseif { string tolower [HTTP::uri] starts_with "webcenter" }
         redirect user to the proper case, including the remainter of the URI.
         The value 10 in the substring command should be the first character of the rest of the URI.
        HTTP::redirect "https://qweb.sys.com/WebCenter/[substr [HTTP::uri] 10]"
    }
}