1
2
3
4 package javax.jmdns.test;
5
6 import static junit.framework.Assert.assertEquals;
7 import static junit.framework.Assert.assertNotNull;
8 import static junit.framework.Assert.assertTrue;
9
10 import java.io.IOException;
11 import java.net.DatagramPacket;
12 import java.util.Date;
13
14 import javax.jmdns.impl.DNSIncoming;
15 import javax.jmdns.impl.DNSOutgoing;
16 import javax.jmdns.impl.DNSQuestion;
17 import javax.jmdns.impl.DNSRecord;
18 import javax.jmdns.impl.constants.DNSConstants;
19 import javax.jmdns.impl.constants.DNSRecordClass;
20 import javax.jmdns.impl.constants.DNSRecordType;
21
22 import org.junit.Before;
23 import org.junit.Test;
24
25
26
27
28 public class DNSMessageTest {
29
30 @Before
31 public void setup() {
32
33 }
34
35 @Test
36 public void testCreateQuery() throws IOException {
37 String serviceName = "_00000000-0b44-f234-48c8-071c565644b3._sub._home-sharing._tcp.local.";
38 DNSOutgoing out = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
39 assertNotNull("Could not create the outgoing message", out);
40 out.addQuestion(DNSQuestion.newQuestion(serviceName, DNSRecordType.TYPE_ANY, DNSRecordClass.CLASS_IN, true));
41 byte[] data = out.data();
42 assertNotNull("Could not encode the outgoing message", data);
43 byte[] expected = new byte[] { 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x25, 0x5f, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x2d, 0x30, 0x62, 0x34, 0x34, 0x2d, 0x66, 0x32, 0x33, 0x34, 0x2d, 0x34, 0x38, 0x63, 0x38,
44 0x2d, 0x30, 0x37, 0x31, 0x63, 0x35, 0x36, 0x35, 0x36, 0x34, 0x34, 0x62, 0x33, 0x4, 0x5f, 0x73, 0x75, 0x62, 0xd, 0x5f, 0x68, 0x6f, 0x6d, 0x65, 0x2d, 0x73, 0x68, 0x61, 0x72, 0x69, 0x6e, 0x67, 0x4, 0x5f, 0x74, 0x63, 0x70, 0x5, 0x6c,
45 0x6f, 0x63, 0x61, 0x6c, 0x0, 0x0, (byte) 0xff, 0x0, 0x1 };
46 for (int i = 0; i < data.length; i++) {
47 assertEquals("the encoded message is not what is expected at index " + i, expected[i], data[i]);
48 }
49 DatagramPacket packet = new DatagramPacket(data, 0, data.length);
50 DNSIncoming in = new DNSIncoming(packet);
51 assertTrue("Wrong packet type.", in.isQuery());
52 assertEquals("Wrong number of questions.", 1, in.getNumberOfQuestions());
53 for (DNSQuestion question : in.getQuestions()) {
54 assertEquals("Wrong question name.", serviceName, question.getName());
55 }
56 }
57
58 @Test
59 public void testCreateAnswer() throws IOException {
60 String serviceType = "_home-sharing._tcp.local.";
61 String serviceName = "Pierre." + serviceType;
62 DNSOutgoing out = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA, false);
63 assertNotNull("Could not create the outgoing message", out);
64 out.addQuestion(DNSQuestion.newQuestion(serviceName, DNSRecordType.TYPE_ANY, DNSRecordClass.CLASS_IN, true));
65 long now = (new Date()).getTime();
66 out.addAnswer(new DNSRecord.Pointer(serviceType, DNSRecordClass.CLASS_IN, true, DNSConstants.DNS_TTL, serviceName), now);
67 out.addAuthorativeAnswer(new DNSRecord.Service(serviceType, DNSRecordClass.CLASS_IN, true, DNSConstants.DNS_TTL, 1, 20, 8080, "panoramix.local."));
68 byte[] data = out.data();
69 assertNotNull("Could not encode the outgoing message", data);
70
71
72
73
74
75
76
77
78 DatagramPacket packet = new DatagramPacket(data, 0, data.length);
79 DNSIncoming in = new DNSIncoming(packet);
80 assertTrue("Wrong packet type.", in.isResponse());
81 assertEquals("Wrong number of questions.", 1, in.getNumberOfQuestions());
82 assertEquals("Wrong number of answers.", 1, in.getNumberOfAnswers());
83 assertEquals("Wrong number of authorities.", 1, in.getNumberOfAuthorities());
84 for (DNSQuestion question : in.getQuestions()) {
85 assertEquals("Wrong question name.", serviceName, question.getName());
86 }
87 }
88
89 protected void print(byte[] data) {
90 System.out.print("{");
91 for (int i = 0; i < data.length; i++) {
92 int value = data[i] & 0xFF;
93 if (i > 0) {
94 System.out.print(",");
95 }
96 System.out.print(" 0x");
97 System.out.print(Integer.toHexString(value));
98 if (i % 20 == 0) {
99 System.out.print("\n");
100 }
101 }
102 System.out.print("}\n");
103 }
104 }