Defined in packages/xotcl-core/tcl/50-protocol-handler-procs.tclRegister the the aolserver filter and traces.
This method is typically called via *-init.tcl.
Note, that the specified url must not have an entry
in the site-nodes, otherwise the openacs request
processor performs always the cockie-based authorization.
To change that, it would be necessary to register the
filter before the request processor (currently, there
are no hooks for that).