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| -rw-r--r-- | src/java/nginx/unit/websocket/Constants.java | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/java/nginx/unit/websocket/Constants.java b/src/java/nginx/unit/websocket/Constants.java new file mode 100644 index 00000000..38b22fe0 --- /dev/null +++ b/src/java/nginx/unit/websocket/Constants.java @@ -0,0 +1,158 @@ +/* + * 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 nginx.unit.websocket; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +import javax.websocket.Extension; + +/** + * Internal implementation constants. + */ +public class Constants { + + // 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 = Integer.getInteger( + "nginx.unit.websocket.DEFAULT_BUFFER_SIZE", 8 * 1024) + .intValue(); + + // Client connection + /** + * Property name to set to configure the value that is passed to + * {@link javax.net.ssl.SSLEngine#setEnabledProtocols(String[])}. The value + * should be a comma separated string. + */ + public static final String SSL_PROTOCOLS_PROPERTY = + "nginx.unit.websocket.SSL_PROTOCOLS"; + public static final String SSL_TRUSTSTORE_PROPERTY = + "nginx.unit.websocket.SSL_TRUSTSTORE"; + public static final String SSL_TRUSTSTORE_PWD_PROPERTY = + "nginx.unit.websocket.SSL_TRUSTSTORE_PWD"; + public static final String SSL_TRUSTSTORE_PWD_DEFAULT = "changeit"; + /** + * Property name to set to configure used SSLContext. The value should be an + * instance of SSLContext. If this property is present, the SSL_TRUSTSTORE* + * properties are ignored. + */ + public static final String SSL_CONTEXT_PROPERTY = + "nginx.unit.websocket.SSL_CONTEXT"; + /** + * Property name to set to configure the timeout (in milliseconds) when + * establishing a WebSocket connection to server. The default is + * {@link #IO_TIMEOUT_MS_DEFAULT}. + */ + public static final String IO_TIMEOUT_MS_PROPERTY = + "nginx.unit.websocket.IO_TIMEOUT_MS"; + public static final long IO_TIMEOUT_MS_DEFAULT = 5000; + + // RFC 2068 recommended a limit of 5 + // Most browsers have a default limit of 20 + public static final String MAX_REDIRECTIONS_PROPERTY = + "nginx.unit.websocket.MAX_REDIRECTIONS"; + public static final int MAX_REDIRECTIONS_DEFAULT = 20; + + // HTTP upgrade header names and values + 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 ORIGIN_HEADER_NAME = "Origin"; + public static final String CONNECTION_HEADER_NAME = "Connection"; + public static final String CONNECTION_HEADER_VALUE = "upgrade"; + public static final String LOCATION_HEADER_NAME = "Location"; + public static final String AUTHORIZATION_HEADER_NAME = "Authorization"; + public static final String WWW_AUTHENTICATE_HEADER_NAME = "WWW-Authenticate"; + 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_EXTENSIONS_HEADER_NAME = "Sec-WebSocket-Extensions"; + + /// HTTP redirection status codes + public static final int MULTIPLE_CHOICES = 300; + public static final int MOVED_PERMANENTLY = 301; + public static final int FOUND = 302; + public static final int SEE_OTHER = 303; + public static final int USE_PROXY = 305; + public static final int TEMPORARY_REDIRECT = 307; + + // Configuration for Origin header in client + static final String DEFAULT_ORIGIN_HEADER_VALUE = + System.getProperty("nginx.unit.websocket.DEFAULT_ORIGIN_HEADER_VALUE"); + + // Configuration for blocking sends + public static final String BLOCKING_SEND_TIMEOUT_PROPERTY = + "nginx.unit.websocket.BLOCKING_SEND_TIMEOUT"; + // Milliseconds so this is 20 seconds + public static final long DEFAULT_BLOCKING_SEND_TIMEOUT = 20 * 1000; + + // Configuration for background processing checks intervals + static final int DEFAULT_PROCESS_PERIOD = Integer.getInteger( + "nginx.unit.websocket.DEFAULT_PROCESS_PERIOD", 10) + .intValue(); + + public static final String WS_AUTHENTICATION_USER_NAME = "nginx.unit.websocket.WS_AUTHENTICATION_USER_NAME"; + public static final String WS_AUTHENTICATION_PASSWORD = "nginx.unit.websocket.WS_AUTHENTICATION_PASSWORD"; + + /* Configuration for extensions + * Note: These options are primarily present to enable this implementation + * to pass compliance tests. They are expected to be removed once + * the WebSocket API includes a mechanism for adding custom extensions + * and disabling built-in extensions. + */ + static final boolean DISABLE_BUILTIN_EXTENSIONS = + Boolean.getBoolean("nginx.unit.websocket.DISABLE_BUILTIN_EXTENSIONS"); + static final boolean ALLOW_UNSUPPORTED_EXTENSIONS = + Boolean.getBoolean("nginx.unit.websocket.ALLOW_UNSUPPORTED_EXTENSIONS"); + + // Configuration for stream behavior + static final boolean STREAMS_DROP_EMPTY_MESSAGES = + Boolean.getBoolean("nginx.unit.websocket.STREAMS_DROP_EMPTY_MESSAGES"); + + public static final boolean STRICT_SPEC_COMPLIANCE = + Boolean.getBoolean("nginx.unit.websocket.STRICT_SPEC_COMPLIANCE"); + + public static final List<Extension> INSTALLED_EXTENSIONS; + + static { + if (DISABLE_BUILTIN_EXTENSIONS) { + INSTALLED_EXTENSIONS = Collections.unmodifiableList(new ArrayList<Extension>()); + } else { + List<Extension> installed = new ArrayList<>(1); + installed.add(new WsExtension("permessage-deflate")); + INSTALLED_EXTENSIONS = Collections.unmodifiableList(installed); + } + } + + private Constants() { + // Hide default constructor + } +} |