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.apache.harmony.xnet.provider.jsse;
19
20import org.apache.harmony.xnet.provider.jsse.AlertException;
21
22import javax.net.ssl.SSLException;
23import javax.net.ssl.SSLHandshakeException;
24
25/**
26 *
27 * Base class for handshake messages
28 */
29public abstract class Message {
30
31    /*
32     * Message length
33     */
34    protected int length;
35
36    /**
37     * Returns message type
38     * @return
39     */
40    abstract int getType();
41
42    /**
43     * Returns message length
44     * @return
45     */
46    public int length() {
47        return length;
48    }
49
50    /**
51     * Sends message
52     * @param out
53     */
54    abstract void send(HandshakeIODataStream out);
55
56    /**
57     * Sends fatal alert
58     * @param description
59     * @param reason
60     */
61    protected void fatalAlert(byte description, String reason) {
62        throw new AlertException(description, new SSLHandshakeException(reason));
63    }
64
65    /**
66     * Sends fatal alert
67     * @param description
68     * @param reason
69     * @param cause
70     */
71    protected void fatalAlert(byte description, String reason, Throwable cause) {
72        throw new AlertException(description, new SSLException(reason, cause));
73    }
74}
75