Computation of abort status headers msg aborts the
Network.HTTP.Lucu.Resource.Resource monad with given status,
additional response headers, and optional message string.
What this really does is to throw a special
Exception. The exception will be caught by the
1. If the Network.HTTP.Lucu.Resource.Resource is in the /Deciding
Header/ or any precedent states, it is possible to use the
status and such like as a HTTP response to be sent to the
2. Otherwise the HTTP response can't be modified anymore so the
only possible thing the system can do is to dump it to the
Note that the status code doesn't have to be an error code so you
can use this action for redirection as well as error reporting e.g.
(Just "It has been moved to example.net")