DnsServer & DnsClient

    @SneakyThrows
    @Test
    public void dns() {
        final String domain = "devops.f-li.cn";
        final InetAddress hostResult = InetAddress.getByName("2.2.2.2");
        DnsServer server = new DnsServer(53);
        server.getCustomHosts().put(domain, hostResult.getAddress());

        System.out.println(Sockets.resolveAddresses("devops.f-li.cn"));
        System.out.println(Sockets.getAddresses("devops.f-li.cn"));

        sleep(2000);
        DnsClient client = new DnsClient(Sockets.parseEndpoint("127.0.0.1:53"));
        InetAddress result = client.resolve(domain);

        assert result.equals(hostResult);

        System.in.read();
    }