1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.coap;
21
22 /**
23 * Type of CoAP message :
24 * <ul>
25 * <li>CONFIMABLE : need to be confirmed by a ACK
26 * <li>NON_CONFIRMABLE : fire and forget message
27 * <li>ACK : confirmation of a CONFIRMABLE message
28 * <li>RESET : to reset the session (see the RFC for details)
29 * </ul>
30 *
31 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
32 */
33 public enum MessageType {
34 CONFIRMABLE(0), NON_CONFIRMABLE(1), ACK(2), RESET(3);
35
36 private final int code;
37
38 private MessageType(int code) {
39 this.code = code;
40 }
41
42 /**
43 * @return the numeric code for this message type
44 */
45 public int getCode() {
46 return code;
47 }
48
49 /**
50 * Find the {@link MessageType} for the given value code (<code>null</code> if not found)
51 */
52 public static MessageType fromCode(int code) {
53 for (MessageType t : MessageType.values()) {
54 if (t.getCode() == code) {
55 return t;
56 }
57 }
58 return null;
59 }
60 }