- util::http::*: since spool file is server provided, use option "-spool" to indicate that spooling is intended. The actual name of the spool file is retuned in the "file" component of the dict. - fix spool file logic for ns_http/ns_ssl - allow spooling as well for curl - drop "-depth" for the toplevel interface, since it is used for iteration on the (private) implementation level - set max_depth per default to 10 to handle redirects automatically