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1   /*
2    * Copyright 2014 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty.handler.codec.http.websocketx.extensions;
17  
18  /**
19   * Created once the handshake phase is done.
20   */
21  public interface WebSocketExtension {
22  
23      int RSV1 = 0x04;
24      int RSV2 = 0x02;
25      int RSV3 = 0x01;
26  
27      /**
28       * @return the reserved bit value to ensure that no other extension should interfere.
29       */
30      int rsv();
31  
32      /**
33       * @return create the extension encoder.
34       */
35      WebSocketExtensionEncoder newExtensionEncoder();
36  
37      /**
38       * @return create the extension decoder.
39       */
40      WebSocketExtensionDecoder newExtensionDecoder();
41  
42  }