@IntegrationTest
public static void testTcpAnswer() throws IOException {
DNSClient client = new DNSClient(new LRUCache(1024));
client.setAskForDnssec(true);
client.setDisableResultFilter(true);
DNSMessage result = client.query("www-nsec.example.com", Record.TYPE.A);
assertNotNull(result);
assertTrue(result.toArray().length > 512);
}
@IntegrationTest
public static void testExampleCom() throws IOException {
DNSClient client = new DNSClient(new LRUCache(1024));
String exampleIp4 = "93.184.216.34"; // stable?
String exampleIp6 = "2606:2800:220:1:248:1893:25c8:1946"; // stable?
assertEquals(
client.query("example.com", Record.TYPE.A).answerSection.get(0).payloadData.toString(),
exampleIp4);
assertEquals(
client.query("www.example.com", Record.TYPE.A).answerSection.get(0).payloadData.toString(),
exampleIp4);
assertEquals(
client.query("example.com", Record.TYPE.AAAA).answerSection.get(0).payloadData.toString(),
exampleIp6);
assertEquals(
client
.query("www.example.com", Record.TYPE.AAAA)
.answerSection
.get(0)
.payloadData
.toString(),
exampleIp6);
DNSMessage nsRecords = client.query("example.com", Record.TYPE.NS);
List<String> values = new ArrayList<>();
for (Record<? extends Data> record : nsRecords.answerSection) {
values.add(record.payloadData.toString());
}
Collections.sort(values);
assertEquals(values.get(0), "a.iana-servers.net.");
assertEquals(values.get(1), "b.iana-servers.net.");
}
@IntegrationTest
public static NSID testNsidLRoot() {
DNSClient client =
new DNSClient(null) {
@Override
protected Builder newQuestion(Builder message) {
message.getEdnsBuilder().addEdnsOption(NSID.REQUEST);
return super.newQuestion(message);
}
};
DNSMessage response = null;
Question q = new Question("de", TYPE.NS);
for (InetAddress lRoot : IterativeDNSClient.getRootServer('l')) {
try {
response = client.query(q, lRoot);
} catch (IOException e) {
continue;
}
break;
}
NSID nsid = response.getEdns().getEdnsOption(OptionCode.NSID);
assertNotNull(nsid);
return nsid;
}