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1   /*
2    * Copyright 2012 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;
17  
18  /**
19   * The default {@link HttpMessage} implementation.
20   */
21  public abstract class DefaultHttpMessage extends DefaultHttpObject implements HttpMessage {
22  
23      private HttpVersion version;
24      private final HttpHeaders headers;
25  
26      /**
27       * Creates a new instance.
28       */
29      protected DefaultHttpMessage(final HttpVersion version) {
30          this(version, true);
31      }
32  
33      protected DefaultHttpMessage(final HttpVersion version, boolean validate) {
34          if (version == null) {
35              throw new NullPointerException("version");
36          }
37          this.version = version;
38          headers = new DefaultHttpHeaders(validate);
39      }
40  
41      @Override
42      public HttpHeaders headers() {
43          return headers;
44      }
45  
46      @Override
47      public HttpVersion getProtocolVersion() {
48          return version;
49      }
50  
51      @Override
52      public HttpMessage setProtocolVersion(HttpVersion version) {
53          if (version == null) {
54              throw new NullPointerException("version");
55          }
56          this.version = version;
57          return this;
58      }
59  }