package frenetic

switch_connected sw is a callback invoked with sw when a switch with identifer sw connects to the controller.

switch_disconnected sw is a callback invoked with sw when a switch with identifer sw disconnects from the controller.

packet_in sw xid pkt is a callback invoked when a packet pkt with transaction ID xid from switch sw arrives at the controller.

barrier_reply sw xid is a callback invoked when a barrier reply with transaction ID xid from switch sw arrives at the controller.

stats_reply sw xid rep is a callback invoked when switch sw responds with a reply rep to a statistics request with transaction ID xid.

cleanup is called when an exception stops the running of the main controller loop.