in plugin/server_audit/server_audit.cc [998:1007]
static void setup_connection_simple(struct connection_info *ci)
{
ci->db_length= 0;
ci->user_length= 0;
ci->host_length= 0;
ci->ip_length= 0;
ci->query_length= 0;
ci->header= 0;
ci->proxy_length= 0;
}