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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.ProtocolVersion;
38  import org.apache.hc.core5.http.protocol.HttpContext;
39  import org.apache.hc.core5.http.protocol.RequestTargetHost;
40  import org.apache.hc.core5.util.Args;
41  
42  /**
43   * HTTP/2 compatible extension of {@link RequestTargetHost}.
44   *
45   * @since 5.0
46   */
47  @Contract(threading = ThreadingBehavior.IMMUTABLE)
48  public class H2RequestTargetHost extends RequestTargetHost {
49  
50      @Override
51      public void process(
52              final HttpRequest request,
53              final EntityDetails entity,
54              final HttpContext context) throws HttpException, IOException {
55          Args.notNull(context, "HTTP context");
56          final ProtocolVersion ver = context.getProtocolVersion();
57          if (ver.getMajor() < 2) {
58              super.process(request, entity, context);
59          }
60      }
61  
62  }