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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  package org.apache.http.impl.conn;
28  
29  import org.apache.http.HttpHost;
30  import org.apache.http.annotation.Contract;
31  import org.apache.http.annotation.ThreadingBehavior;
32  import org.apache.http.conn.SchemePortResolver;
33  import org.apache.http.conn.UnsupportedSchemeException;
34  import org.apache.http.util.Args;
35  
36  /**
37   * Default {@link SchemePortResolver}.
38   *
39   * @since 4.3
40   */
41  @Contract(threading = ThreadingBehavior.IMMUTABLE)
42  public class DefaultSchemePortResolver implements SchemePortResolver {
43  
44      public static final DefaultSchemePortResolver INSTANCE = new DefaultSchemePortResolver();
45  
46      @Override
47      public int resolve(final HttpHost host) throws UnsupportedSchemeException {
48          Args.notNull(host, "HTTP host");
49          final int port = host.getPort();
50          if (port > 0) {
51              return port;
52          }
53          final String name = host.getSchemeName();
54          if (name.equalsIgnoreCase("http")) {
55              return 80;
56          } else if (name.equalsIgnoreCase("https")) {
57              return 443;
58          } else {
59              throw new UnsupportedSchemeException(name + " protocol is not supported");
60          }
61      }
62  
63  }