libjava/java/nio/channels/ServerSocketChannel.java

   1 /* ServerSocketChannel.java --
   2    Copyright (C) 2002 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package java.nio.channels;
  40
  41 import java.nio.channels.spi.AbstractSelectableChannel;
  42 import java.nio.channels.spi.SelectorProvider;
  43 import java.io.IOException;
  44 import java.net.ServerSocket;
  45
  46 /**
  47  * @author Michael Koch
  48  * @since 1.4
  49  */
  50 public abstract class ServerSocketChannel
  51   extends AbstractSelectableChannel
  52 {
  53   /**
  54    * Initializes this channel.
  55    */
  56   protected ServerSocketChannel (SelectorProvider provider)
  57   {
  58     super (provider);
  59   }
  60
  61   /**
  62    * Accepts a connection made to this channel's socket.
  63    *
  64    * @exception IOException If an error occurs
  65    * @exception AsynchronousCloseException If another thread closes this
  66    * channel while the accept operation is in progress.
  67    * @exception ClosedByInterruptException If another thread interrupts the
  68    * current thread while the accept operation is in progress, thereby closing
  69    * the channel and setting the current thread's interrupt status.
  70    * @exception ClosedChannelException If the channel is closed.
  71    * @exception NotYetBoundException If the channel's socket is not yet bound.
  72    * @exception SecurityException If a security manager has been installed and
  73    * it does not permit access to the remote endpoint of the new connection.
  74    */
  75   public abstract SocketChannel accept () throws IOException;
  76
  77   /**
  78    * Retrieves the channels socket.
  79    */
  80   public abstract ServerSocket socket ();
  81
  82   /**
  83    * Opens a server socket channel.
  84    *
  85    * @exception IOException If an error occurs
  86    */
  87   public static ServerSocketChannel open () throws IOException
  88   {
  89     return SelectorProvider.provider ().openServerSocketChannel ();
  90   }
  91
  92   /**
  93    * Retrieves the valid operations for this channel.
  94    */
  95   public final int validOps ()
  96   {
  97     return SelectionKey.OP_ACCEPT;
  98   }
  99 }