1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tomcat.websocket;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import javax.websocket.Extension;
/**
* Internal implementation constants.
*/
public class Constants {
protected static final String PACKAGE_NAME =
Constants.class.getPackage().getName();
// OP Codes
public static final byte OPCODE_CONTINUATION = 0x00;
public static final byte OPCODE_TEXT = 0x01;
public static final byte OPCODE_BINARY = 0x02;
public static final byte OPCODE_CLOSE = 0x08;
public static final byte OPCODE_PING = 0x09;
public static final byte OPCODE_PONG = 0x0A;
// Internal OP Codes
// RFC 6455 limits OP Codes to 4 bits so these should never clash
// Always set bit 4 so these will be treated as control codes
static final byte INTERNAL_OPCODE_FLUSH = 0x18;
// Buffers
static final int DEFAULT_BUFFER_SIZE = 8 * 1024;
// Client connection
public static final String HOST_HEADER_NAME = "Host";
public static final String UPGRADE_HEADER_NAME = "Upgrade";
public static final String UPGRADE_HEADER_VALUE = "websocket";
public static final String CONNECTION_HEADER_NAME = "Connection";
public static final String CONNECTION_HEADER_VALUE = "upgrade";
public static final String WS_VERSION_HEADER_NAME = "Sec-WebSocket-Version";
public static final String WS_VERSION_HEADER_VALUE = "13";
public static final String WS_KEY_HEADER_NAME = "Sec-WebSocket-Key";
public static final String WS_PROTOCOL_HEADER_NAME =
"Sec-WebSocket-Protocol";
public static final String WS_PROTOCOL_HEADER_NAME_LOWER =
WS_PROTOCOL_HEADER_NAME.toLowerCase(Locale.ENGLISH);
public static final String WS_EXTENSIONS_HEADER_NAME =
"Sec-WebSocket-Extensions";
public static final boolean STRICT_SPEC_COMPLIANCE =
Boolean.getBoolean(
"org.apache.tomcat.websocket.STRICT_SPEC_COMPLIANCE");
public static final List<Extension> INSTALLED_EXTENSIONS;
static {
List<Extension> installed = new ArrayList<Extension>(1);
installed.add(new WsExtension("permessage-deflate"));
INSTALLED_EXTENSIONS = Collections.unmodifiableList(installed);
}
private Constants() {
// Hide default constructor
}
}
|
