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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.reactor;
29  
30  import java.net.SocketAddress;
31  import java.util.concurrent.Future;
32  
33  import org.apache.hc.core5.concurrent.FutureCallback;
34  import org.apache.hc.core5.net.NamedEndpoint;
35  import org.apache.hc.core5.util.Args;
36  import org.apache.hc.core5.util.Timeout;
37  
38  abstract class AbstractIOReactorBase implements ConnectionInitiator, IOReactorService {
39  
40      @Override
41      public final Future<IOSession> connect(
42              final NamedEndpoint remoteEndpoint,
43              final SocketAddress remoteAddress,
44              final SocketAddress localAddress,
45              final Timeout timeout,
46              final Object attachment,
47              final FutureCallback<IOSession> callback) throws IOReactorShutdownException {
48          Args.notNull(remoteEndpoint, "Remote endpoint");
49          if (getStatus().compareTo(IOReactorStatus.ACTIVE) > 0) {
50              throw new IOReactorShutdownException("I/O reactor has been shut down");
51          }
52          try {
53              return getWorkerSelector().next().connect(remoteEndpoint, remoteAddress, localAddress, timeout, attachment, callback);
54          } catch (final IOReactorShutdownException ex) {
55              initiateShutdown();
56              throw ex;
57          }
58      }
59  
60      abstract IOWorkers.Selector getWorkerSelector();
61  
62  }