View Javadoc

1   /*
2    * Copyright 2012 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package org.jboss.netty.channel.socket.nio;
17  
18  import static org.jboss.netty.channel.Channels.*;
19  
20  import java.io.IOException;
21  import java.nio.channels.SocketChannel;
22  
23  import org.jboss.netty.channel.ChannelException;
24  import org.jboss.netty.channel.ChannelFactory;
25  import org.jboss.netty.channel.ChannelFuture;
26  import org.jboss.netty.channel.ChannelPipeline;
27  import org.jboss.netty.channel.ChannelSink;
28  import org.jboss.netty.logging.InternalLogger;
29  import org.jboss.netty.logging.InternalLoggerFactory;
30  
31  final class NioClientSocketChannel extends NioSocketChannel {
32  
33      private static final InternalLogger logger =
34          InternalLoggerFactory.getInstance(NioClientSocketChannel.class);
35  
36      private static SocketChannel newSocket() {
37          SocketChannel socket;
38          try {
39              socket = SocketChannel.open();
40          } catch (IOException e) {
41              throw new ChannelException("Failed to open a socket.", e);
42          }
43  
44          boolean success = false;
45          try {
46              socket.configureBlocking(false);
47              success = true;
48          } catch (IOException e) {
49              throw new ChannelException("Failed to enter non-blocking mode.", e);
50          } finally {
51              if (!success) {
52                  try {
53                      socket.close();
54                  } catch (IOException e) {
55                      if (logger.isWarnEnabled()) {
56                          logger.warn(
57                                  "Failed to close a partially initialized socket.",
58                                  e);
59                      }
60  
61                  }
62              }
63          }
64  
65          return socket;
66      }
67  
68      volatile ChannelFuture connectFuture;
69      volatile boolean boundManually;
70  
71      // Does not need to be volatile as it's accessed by only one thread.
72      long connectDeadlineNanos;
73  
74      NioClientSocketChannel(
75              ChannelFactory factory, ChannelPipeline pipeline,
76              ChannelSink sink, NioWorker worker) {
77  
78          super(null, factory, pipeline, sink, newSocket(), worker);
79          fireChannelOpen(this);
80      }
81  }