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 * <p>
48 * This interceptor is essential for the HTTP protocol conformance and
49 * the correct operation of the client-side message processing pipeline.
50 * </p>
51 *
52 * @since 5.0
53 */
54 @Contract(threading = ThreadingBehavior.IMMUTABLE)
55 public class H2RequestContent extends RequestContent {
56
57 /**
58 * Singleton instance.
59 *
60 * @since 5.2
61 */
62 public static final H2RequestContent INSTANCE = new H2RequestContent();
63
64 public H2RequestContent() {
65 super();
66 }
67
68 public H2RequestContent(final boolean overwrite) {
69 super(overwrite);
70 }
71
72 @Override
73 public void process(
74 final HttpRequest request,
75 final EntityDetails entity,
76 final HttpContext context) throws HttpException, IOException {
77 Args.notNull(context, "HTTP context");
78 final ProtocolVersion ver = context.getProtocolVersion();
79 if (ver.getMajor() < 2) {
80 super.process(request, entity, context);
81 } else if (entity != null) {
82 final String method = request.getMethod();
83 if (Method.TRACE.isSame(method)) {
84 throw new ProtocolException("TRACE request may not enclose an entity");
85 }
86 MessageSupport.addContentTypeHeader(request, entity);
87 MessageSupport.addContentEncodingHeader(request, entity);
88 MessageSupport.addTrailerHeader(request, entity);
89
90 // Check for OPTIONS request with content but no Content-Type header
91 validateOptionsContentType(request);
92 }
93 }
94 }