1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18package org.conscrypt;
19
20import javax.net.ssl.SSLException;
21import javax.net.ssl.SSLHandshakeException;
22
23/**
24 *
25 * Base class for handshake messages
26 */
27public abstract class Message {
28
29    /*
30     * Message length
31     */
32    protected int length;
33
34    /**
35     * Returns message type
36     */
37    abstract int getType();
38
39    /**
40     * Returns message length
41     */
42    public int length() {
43        return length;
44    }
45
46    /**
47     * Sends message
48     * @param out
49     */
50    abstract void send(HandshakeIODataStream out);
51
52    /**
53     * Sends fatal alert
54     * @param description
55     * @param reason
56     */
57    protected void fatalAlert(byte description, String reason) {
58        throw new AlertException(description, new SSLHandshakeException(reason));
59    }
60
61    /**
62     * Sends fatal alert
63     * @param description
64     * @param reason
65     * @param cause
66     */
67    protected void fatalAlert(byte description, String reason, Throwable cause) {
68        throw new AlertException(description, new SSLException(reason, cause));
69    }
70}
71