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  /*
   * 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.catalina.websocket;

Constants for this Java package.
 
 public class Constants {
     public static final String Package = "org.apache.catalina.websocket";
 
     public static final String INBOUND_ATTRIBUTE = "websocket.inbound";
 
     // 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;
 
     // Status Codes
     // Definitions as per RFC 6455 (http://tools.ietf.org/html/rfc6455)
     
1000 indicates a normal closure, meaning whatever purpose the connection was established for has been fulfilled.
 
     public static final int STATUS_CLOSE_NORMAL = 1000;

    
1001 indicates that an endpoint is "going away", such as a server going down, or a browser having navigated away from a page.
 
     public static final int STATUS_SHUTDOWN = 1001;

    
1002 indicates that an endpoint is terminating the connection due to a protocol error.
 
     public static final int STATUS_PROTOCOL_ERROR = 1002;

    
1003 indicates that an endpoint is terminating the connection because it has received a type of data it cannot accept (e.g. an endpoint that understands only text data MAY send this if it receives a binary message).
 
     public static final int STATUS_UNEXPECTED_DATA_TYPE = 1003;
 
     // 1004 is reserved. The specific meaning might be defined in the future.
 
    
1005 is a reserved value and MUST NOT be set as a status code in a Close control frame by an endpoint. It is designated for use in applications expecting a status code to indicate that no status code was actually present.
 
     public static final int STATUS_CODE_MISSING = 1005;

    
1006 is a reserved value and MUST NOT be set as a status code in a Close control frame by an endpoint. It is designated for use in applications expecting a status code to indicate that the connection was closed abnormally, e.g. without sending or receiving a Close control frame.
 
     public static final int STATUS_CLOSED_UNEXPECTEDLY = 1006;

    
1007 indicates that an endpoint is terminating the connection because it has received data within a message that was not consistent with the type of the message (e.g., non-UTF-8 [RFC3629] data within a text message).
 
     public static final int STATUS_BAD_DATA = 1007;

    
1008 indicates that an endpoint is terminating the connection because it has received a message that violates its policy. This is a generic status code that can be returned when there is no other more suitable status code (e.g. 1003 or 1009), or if there is a need to hide specific details about the policy.
 
     public static final int STATUS_POLICY_VIOLATION = 1008;

    
1009 indicates that an endpoint is terminating the connection because it has received a message which is too big for it to process.
    public static final int STATUS_MESSAGE_TOO_LARGE = 1009;

    
1010 indicates that an endpoint (client) is terminating the connection because it has expected the server to negotiate one or more extension, but the server didn't return them in the response message of the WebSocket handshake. The list of extensions which are needed SHOULD appear in the /reason/ part of the Close frame. Note that this status code is not used by the server, because it can fail the WebSocket handshake instead.
    public static final int STATUS_REQUIRED_EXTENSION = 1010;

    
1011 indicates that a server is terminating the connection because it encountered an unexpected condition that prevented it from fulfilling the request.
    public static final int STATUS_UNEXPECTED_CONDITION = 1011;
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