1 /*
2 * Copyright 2020 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.quic;
17
18 /**
19 * The type of the
20 * <a href="https://quicwg.org/base-drafts/rfc9000.html#name-packets-and-frames">QUIC packet</a>.
21 */
22 public enum QuicPacketType {
23 /**
24 * Initial packet.
25 */
26 INITIAL,
27
28 /**
29 * Retry packet.
30 */
31 RETRY,
32
33 /**
34 * Handshake packet.
35 */
36 HANDSHAKE,
37
38 /**
39 * 0-RTT packet.
40 */
41 ZERO_RTT,
42
43 /**
44 * 1-RTT short header packet.
45 */
46 SHORT,
47
48 /**
49 * Version negotiation packet.
50 */
51 VERSION_NEGOTIATION;
52
53 /**
54 * Return the {@link QuicPacketType} for the given byte.
55 *
56 * @param type the byte that represent the type.
57 * @return the {@link QuicPacketType}.
58 */
59 static QuicPacketType of(byte type) {
60 switch(type) {
61 case 1:
62 return INITIAL;
63 case 2:
64 return RETRY;
65 case 3:
66 return HANDSHAKE;
67 case 4:
68 return ZERO_RTT;
69 case 5:
70 return SHORT;
71 case 6:
72 return VERSION_NEGOTIATION;
73 default:
74 throw new IllegalArgumentException("Unknown QUIC packet type: " + type);
75 }
76 }
77 }