1 /*
2 * Copyright 2015 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.handler.codec.dns;
17
18 import io.netty.util.internal.UnstableApi;
19
20 /**
21 * A DNS response message.
22 */
23 @UnstableApi
24 public interface DnsResponse extends DnsMessage {
25
26 /**
27 * Returns {@code true} if responding server is authoritative for the domain
28 * name in the query message.
29 */
30 boolean isAuthoritativeAnswer();
31
32 /**
33 * Set to {@code true} if responding server is authoritative for the domain
34 * name in the query message.
35 *
36 * @param authoritativeAnswer flag for authoritative answer
37 */
38 DnsResponse setAuthoritativeAnswer(boolean authoritativeAnswer);
39
40 /**
41 * Returns {@code true} if response has been truncated, usually if it is
42 * over 512 bytes.
43 */
44 boolean isTruncated();
45
46 /**
47 * Set to {@code true} if response has been truncated (usually happens for
48 * responses over 512 bytes).
49 *
50 * @param truncated flag for truncation
51 */
52 DnsResponse setTruncated(boolean truncated);
53
54 /**
55 * Returns {@code true} if DNS server can handle recursive queries.
56 */
57 boolean isRecursionAvailable();
58
59 /**
60 * Set to {@code true} if DNS server can handle recursive queries.
61 *
62 * @param recursionAvailable flag for recursion availability
63 */
64 DnsResponse setRecursionAvailable(boolean recursionAvailable);
65
66 /**
67 * Returns the 4 bit return code.
68 */
69 DnsResponseCode code();
70
71 /**
72 * Sets the response code for this message.
73 *
74 * @param code the response code
75 */
76 DnsResponse setCode(DnsResponseCode code);
77
78 @Override
79 DnsResponse setId(int id);
80
81 @Override
82 DnsResponse setOpCode(DnsOpCode opCode);
83
84 @Override
85 DnsResponse setRecursionDesired(boolean recursionDesired);
86
87 @Override
88 DnsResponse setZ(int z);
89
90 @Override
91 DnsResponse setRecord(DnsSection section, DnsRecord record);
92
93 @Override
94 DnsResponse addRecord(DnsSection section, DnsRecord record);
95
96 @Override
97 DnsResponse addRecord(DnsSection section, int index, DnsRecord record);
98
99 @Override
100 DnsResponse clear(DnsSection section);
101
102 @Override
103 DnsResponse clear();
104
105 @Override
106 DnsResponse touch();
107
108 @Override
109 DnsResponse touch(Object hint);
110
111 @Override
112 DnsResponse retain();
113
114 @Override
115 DnsResponse retain(int increment);
116 }