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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    *   https://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  import io.netty.util.internal.ObjectUtil;
19  
20  import static io.netty.handler.codec.http.DefaultHttpHeadersFactory.headersFactory;
21  import static io.netty.util.internal.ObjectUtil.checkNotNull;
22  
23  /**
24   * The default {@link HttpResponse} implementation.
25   */
26  public class DefaultHttpResponse extends DefaultHttpMessage implements HttpResponse {
27  
28      private HttpResponseStatus status;
29  
30      /**
31       * Creates a new instance.
32       *
33       * @param version the HTTP version of this response
34       * @param status  the status of this response
35       */
36      public DefaultHttpResponse(HttpVersion version, HttpResponseStatus status) {
37          this(version, status, headersFactory());
38      }
39  
40      /**
41       * Creates a new instance.
42       *
43       * @param version           the HTTP version of this response
44       * @param status            the status of this response
45       * @param validateHeaders   validate the header names and values when adding them to the {@link HttpHeaders}
46       * @deprecated Use the {@link #DefaultHttpResponse(HttpVersion, HttpResponseStatus, HttpHeadersFactory)} constructor
47       * instead.
48       */
49      @Deprecated
50      public DefaultHttpResponse(HttpVersion version, HttpResponseStatus status, boolean validateHeaders) {
51          this(version, status, headersFactory().withValidation(validateHeaders));
52      }
53  
54      /**
55       * Creates a new instance.
56       *
57       * @param version           the HTTP version of this response
58       * @param status            the status of this response
59       * @param validateHeaders   validate the header names and values when adding them to the {@link HttpHeaders}
60       * @param singleFieldHeaders {@code true} to check and enforce that headers with the same name are appended
61       * to the same entry and comma separated.
62       * See <a href="https://tools.ietf.org/html/rfc7230#section-3.2.2">RFC 7230, 3.2.2</a>.
63       * {@code false} to allow multiple header entries with the same name to
64       * coexist.
65       * @deprecated Use the {@link #DefaultHttpResponse(HttpVersion, HttpResponseStatus, HttpHeadersFactory)} constructor
66       * instead.
67       */
68      @Deprecated
69      public DefaultHttpResponse(HttpVersion version, HttpResponseStatus status, boolean validateHeaders,
70                                 boolean singleFieldHeaders) {
71          this(version, status, headersFactory().withValidation(validateHeaders)
72                  .withCombiningHeaders(singleFieldHeaders));
73      }
74  
75      /**
76       * Creates a new instance.
77       *
78       * @param version           the HTTP version of this response
79       * @param status            the status of this response
80       * @param headersFactory    the {@link HttpHeadersFactory} used to create the headers for this HTTP Response.
81       * The recommended default is {@link DefaultHttpHeadersFactory#headersFactory()}.
82       */
83      public DefaultHttpResponse(HttpVersion version, HttpResponseStatus status, HttpHeadersFactory headersFactory) {
84          this(version, status, headersFactory.newHeaders());
85      }
86  
87      /**
88       * Creates a new instance.
89       *
90       * @param version           the HTTP version of this response
91       * @param status            the status of this response
92       * @param headers           the headers for this HTTP Response
93       */
94      public DefaultHttpResponse(HttpVersion version, HttpResponseStatus status, HttpHeaders headers) {
95          super(version, headers);
96          this.status = checkNotNull(status, "status");
97      }
98  
99      @Override
100     @Deprecated
101     public HttpResponseStatus getStatus() {
102         return status();
103     }
104 
105     @Override
106     public HttpResponseStatus status() {
107         return status;
108     }
109 
110     @Override
111     public HttpResponse setStatus(HttpResponseStatus status) {
112         this.status = ObjectUtil.checkNotNull(status, "status");
113         return this;
114     }
115 
116     @Override
117     public HttpResponse setProtocolVersion(HttpVersion version) {
118         super.setProtocolVersion(version);
119         return this;
120     }
121 
122     @Override
123     public String toString() {
124         return HttpMessageUtil.appendResponse(new StringBuilder(256), this).toString();
125     }
126 
127     @Override
128     public int hashCode() {
129         int result = 1;
130         result = 31 * result + status.hashCode();
131         result = 31 * result + super.hashCode();
132         return result;
133     }
134 
135     @Override
136     public boolean equals(Object o) {
137         if (!(o instanceof DefaultHttpResponse)) {
138             return false;
139         }
140 
141         DefaultHttpResponse other = (DefaultHttpResponse) o;
142 
143         return status.equals(other.status()) && super.equals(o);
144     }
145 }