# Store original url for logging purposes.
declare local var.original-url STRING;
set var.original-url = req.url;

# Remove all querystring parameters which are not part of the public API.
set req.url = querystring.regfilter_except(req.url, "^(features|excludes|rum|unknown|flags|version|ua|callback|compression)$");

log "Original url: " var.original-url;
log "Updated  url: " req.url;