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    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.net.InetSocketAddress;
    22  import java.nio.channels.Selector;
    23  import java.nio.channels.ServerSocketChannel;
    24  import java.util.concurrent.locks.Lock;
    25  import java.util.concurrent.locks.ReentrantLock;
    26
    27  import org.jboss.netty.channel.AbstractServerChannel;
    28  import org.jboss.netty.channel.ChannelException;
    29  import org.jboss.netty.channel.ChannelFactory;
    30  import org.jboss.netty.channel.ChannelPipeline;
    31  import org.jboss.netty.channel.ChannelSink;
    32  import org.jboss.netty.channel.socket.DefaultServerSocketChannelConfig;
    33  import org.jboss.netty.channel.socket.ServerSocketChannelConfig;
    34  import org.jboss.netty.logging.InternalLogger;
    35  import org.jboss.netty.logging.InternalLoggerFactory;
    36
    37  class NioServerSocketChannel extends AbstractServerChannel
    38                               implements org.jboss.netty.channel.socket.ServerSocketChannel {
    39
    40      private static final InternalLogger logger =
    41          InternalLoggerFactory.getInstance(NioServerSocketChannel.class);
    42
    43      final ServerSocketChannel socket;
    44      final Lock shutdownLock = new ReentrantLock();
    45      volatile Selector selector;
    46      private final ServerSocketChannelConfig config;
    47
    48      NioServerSocketChannel(
    49              ChannelFactory factory,
    50              ChannelPipeline pipeline,
    51              ChannelSink sink) {
    52
    53          super(factory, pipeline, sink);
    54
    55          try {
    56              socket = ServerSocketChannel.open();
    57          } catch (IOException e) {
    58              throw new ChannelException(
    59                      "Failed to open a server socket.", e);
    60          }
    61
    62          try {
    63              socket.configureBlocking(false);
    64          } catch (IOException e) {
    65              try {
    66                  socket.close();
    67              } catch (IOException e2) {
    68                  if (logger.isWarnEnabled()) {
    69                      logger.warn(
    70                              "Failed to close a partially initialized socket.", e2);
    71                  }
    72
    73              }
    74
    75              throw new ChannelException("Failed to enter non-blocking mode.", e);
    76          }
    77
    78          config = new DefaultServerSocketChannelConfig(socket.socket());
    79
    80          fireChannelOpen(this);
    81      }
    82
    83      public ServerSocketChannelConfig getConfig() {
    84          return config;
    85      }
    86
    87      public InetSocketAddress getLocalAddress() {
    88          return (InetSocketAddress) socket.socket().getLocalSocketAddress();
    89      }
    90
    91      public InetSocketAddress getRemoteAddress() {
    92          return null;
    93      }
    94
    95      public boolean isBound() {
    96          return isOpen() && socket.socket().isBound();
    97      }
    98
    99      @Override
    100     protected boolean setClosed() {
    101         return super.setClosed();
    102     }
    103 }