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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.hc.core5.http2.protocol;
29  
30  import java.io.IOException;
31  
32  import org.apache.hc.core5.annotation.Contract;
33  import org.apache.hc.core5.annotation.ThreadingBehavior;
34  import org.apache.hc.core5.http.EntityDetails;
35  import org.apache.hc.core5.http.HttpException;
36  import org.apache.hc.core5.http.HttpRequest;
37  import org.apache.hc.core5.http.Method;
38  import org.apache.hc.core5.http.ProtocolException;
39  import org.apache.hc.core5.http.ProtocolVersion;
40  import org.apache.hc.core5.http.message.MessageSupport;
41  import org.apache.hc.core5.http.protocol.HttpContext;
42  import org.apache.hc.core5.http.protocol.RequestContent;
43  import org.apache.hc.core5.util.Args;
44  
45  /**
46   * HTTP/2 compatible extension of {@link RequestContent}.
47   *
48   * @since 5.0
49   */
50  @Contract(threading = ThreadingBehavior.IMMUTABLE)
51  public class H2RequestContent extends RequestContent {
52  
53      public H2RequestContent() {
54          super();
55      }
56  
57      public H2RequestContent(final boolean overwrite) {
58          super(overwrite);
59      }
60  
61      @Override
62      public void process(
63              final HttpRequest request,
64              final EntityDetails entity,
65              final HttpContext context) throws HttpException, IOException {
66          Args.notNull(context, "HTTP context");
67          final ProtocolVersion ver = context.getProtocolVersion();
68          if (ver.getMajor() < 2) {
69              super.process(request, entity, context);
70          } else if (entity != null) {
71              final String method = request.getMethod();
72              if (Method.TRACE.isSame(method)) {
73                  throw new ProtocolException("TRACE request may not enclose an entity");
74              }
75              MessageSupport.addContentTypeHeader(request, entity);
76              MessageSupport.addContentEncodingHeader(request, entity);
77              MessageSupport.addTrailerHeader(request, entity);
78          }
79      }
80  }