rem: OpnSession *session = (OpnSession *) udata;  assert(session);
context: OPN_HANDLER(stats){	OpnSession *session = (OpnSession *) udata;	assert(session);	session->stats.users = opn_packet_get_uint32(packet);	session->stats.files = opn_packet_get_uint32(packet);	session->stats.size = (double) opn_packet_get_uint32(packet);}