/*
    * Copyright 2009 Red Hat, Inc.
    *
    * Red Hat licenses this file to you under the Apache License, version 2.0
    * (the "License"); you may not use this file except in compliance with the
    * License.  You may obtain a copy of the License at:
    *
    *    http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  package org.jboss.netty.channel.socket.nio;
  
  import static org.jboss.netty.channel.Channels.*;
  
  import java.io.IOException;
  import java.nio.channels.SocketChannel;
  
  import org.jboss.netty.channel.ChannelException;
  import org.jboss.netty.channel.ChannelFactory;
  import org.jboss.netty.channel.ChannelFuture;
  import org.jboss.netty.channel.ChannelPipeline;
  import org.jboss.netty.channel.ChannelSink;
  import org.jboss.netty.logging.InternalLogger;
  import org.jboss.netty.logging.InternalLoggerFactory;
  
  /**
   *
   * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
   * @author <a href="http://gleamynode.net/">Trustin Lee</a>
   *
   * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
   *
   */
  final class NioClientSocketChannel extends NioSocketChannel {
  
      private static final InternalLogger logger =
          InternalLoggerFactory.getInstance(NioClientSocketChannel.class);
  
      private static SocketChannel newSocket() {
          SocketChannel socket;
          try {
              socket = SocketChannel.open();
          } catch (IOException e) {
              throw new ChannelException("Failed to open a socket.", e);
          }
  
          boolean success = false;
          try {
              socket.configureBlocking(false);
              success = true;
          } catch (IOException e) {
              throw new ChannelException("Failed to enter non-blocking mode.", e);
          } finally {
              if (!success) {
                  try {
                      socket.close();
                  } catch (IOException e) {
                      logger.warn(
                              "Failed to close a partially initialized socket.",
                              e);
                  }
              }
          }
  
          return socket;
      }
  
      volatile ChannelFuture connectFuture;
      volatile boolean boundManually;
  
      // Does not need to be volatile as it's accessed by only one thread.
      long connectDeadlineNanos;
  
      NioClientSocketChannel(
              ChannelFactory factory, ChannelPipeline pipeline,
              ChannelSink sink, NioWorker worker) {
  
          super(null, factory, pipeline, sink, newSocket(), worker);
          fireChannelOpen(this);
      }
  }