#NEWLINE# @ set_ev_handler ( ofp_event . EventOFPEchoReply , [ HANDSHAKE_DISPATCHER , CONFIG_DISPATCHER , MAIN_DISPATCHER ] ) #NEWLINE# def echo_reply_handler( self , ev ) : #NEWLINE# #INDENT# msg = ev . msg #NEWLINE# datapath = msg . datapath #NEWLINE# datapath . acknowledge_echo_reply ( msg . xid )