Find the handler to call from Path. Rules:
- If there is a matching handler, use this.
- If there are multiple
prefix(Path) handlers, use the
longest.
If there is a handler for /dir/ and the requested path is
/dir, find_handler/3 throws a http_reply exception, causing
the wrapper to generate a 301 (Moved Permanently) reply.
- Errors
- -
existence_error(http_location, Location)
@throw http_reply(moved(Dir))
- To be done
- - Introduce automatic redirection to indexes here?