Redirect but keep the original url in the address bar

Here is the final solution that I got it working. Thanks Vernon, Josh Hill, Josh for your responses.

when HTTP_REQUEST {

HTTP::host "vendorsite.com"

if { ([HTTP::uri] equals "/") } { HTTP::uri "/UserAccount/Login/" }

set dest [lindex [RESOLV::lookup @8.8.8.8 -a "vendorsite.com"] 0]

node $dest 443

}