Package com.caucho.vfs

Source Code of com.caucho.vfs.QServerSocketWrapper

/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT.  See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
*   Free SoftwareFoundation, Inc.
*   59 Temple Place, Suite 330
*   Boston, MA 02111-1307  USA
*
* @author Scott Ferguson
*/

package com.caucho.vfs;

import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.spi.SelectorProvider;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
* Abstract socket to handle both normal sockets and bin/resin sockets.
*/
public class QServerSocketWrapper extends QServerSocket {
  private static final Logger log
    = Logger.getLogger(QServerSocketWrapper.class.getName());
 
  private ServerSocket _ss;
  private boolean _tcpNoDelay = true;
  private int _connectionSocketTimeout = 65000;
 
  public QServerSocketWrapper()
  {
  }

  public QServerSocketWrapper(ServerSocket ss)
  {
    init(ss);
  }

  public void init(ServerSocket ss)
  {
    _ss = ss;
  }

  public void setTcpNoDelay(boolean delay)
  {
    _tcpNoDelay = delay;
  }

  public boolean getTcpNoDelay()
  {
    return _tcpNoDelay;
  }

  public void setConnectionSocketTimeout(int socketTimeout)
  {
    _connectionSocketTimeout = socketTimeout;
  }
 
  /**
   * Accepts a new socket.
   */
  public boolean accept(QSocket qSocket)
    throws IOException
  {
    QSocketWrapper s = (QSocketWrapper) qSocket;

    Socket socket = _ss.accept();

    if (socket == null)
      return false;

    // XXX:
    if (_tcpNoDelay)
      socket.setTcpNoDelay(true);

    if (_connectionSocketTimeout > 0)
      socket.setSoTimeout(_connectionSocketTimeout);

    s.init(socket);

    return true;
  }
 
  /**
   * Creates a new socket object.
   */
  public QSocket createSocket()
    throws IOException
  {
    return new QSocketWrapper();
  }

  public InetAddress getLocalAddress()
  {
    return _ss.getInetAddress();
  }

  public int getLocalPort()
  {
    return _ss.getLocalPort();
  }

  public Selector getSelector()
  {
    try {
      ServerSocketChannel channel = _ss.getChannel();

      if (channel == null)
        return null;
     
      SelectorProvider provider = channel.provider();

      if (provider != null)
        return provider.openSelector();
      else
        return null;
    } catch (Throwable e) {
      log.log(Level.WARNING, e.toString(), e);
      return null;
    }
  }

  /**
   * Closes the underlying socket.
   */
  public void close()
    throws IOException
  {
    ServerSocket ss = _ss;
    _ss = ss;

    if (ss != null) {
      try {
        ss.close();
      } catch (Exception e) {
      }
    }
  }
 
  public String toString()
  {
    return "ServerSocketWrapper[" + getLocalAddress() + ":" + getLocalPort() + "]";
  }
}
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