The epp-frontend daemon implements the Extensible
Provisioning Protocol. This daemon listens on a TCP port, and
accepts well-formed EPP requests, acts on those requests, and returns
responses to the client that made a request. The daemon parses the XML of
the EPP requests, and sends actions to the xaction daemon,
through a msgbus channel. The xaction daemon
validates the request against the permissions for the registrar, and
performs any database operations that required. The xaction
process returns the results of the database operations back to the
epp-frontend daemon through the msgbus.
This daemon sends statistics information and log file information to
the msgbus for consumption by interested listeners.