balancer.java

EventLoopGroup group = new NioEventLoopGroup();
        try {
                for(UdpLoadBalancerConfig config : configList) {
                    System.out.println("Started load balancer on port: " + config.port + " and with servers: " + java.util.Arrays.toString(config.servers));
                    Bootstrap b = new Bootstrap();
                    b.group(group)
                            .channel(NioDatagramChannel.class)
                            .option(ChannelOption.SO_BROADCAST, true)
                            .handler(new UdpLoadBalancerHandler(config.servers, debug));
                    b.bind(config.port).sync().channel().closeFuture().await();

                }
            } finally {
                group.shutdownGracefully();
        }