001 /* ServerSocketChannel.java -- 002 Copyright (C) 2002 Free Software Foundation, Inc. 003 004 This file is part of GNU Classpath. 005 006 GNU Classpath is free software; you can redistribute it and/or modify 007 it under the terms of the GNU General Public License as published by 008 the Free Software Foundation; either version 2, or (at your option) 009 any later version. 010 011 GNU Classpath is distributed in the hope that it will be useful, but 012 WITHOUT ANY WARRANTY; without even the implied warranty of 013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 General Public License for more details. 015 016 You should have received a copy of the GNU General Public License 017 along with GNU Classpath; see the file COPYING. If not, write to the 018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 019 02110-1301 USA. 020 021 Linking this library statically or dynamically with other modules is 022 making a combined work based on this library. Thus, the terms and 023 conditions of the GNU General Public License cover the whole 024 combination. 025 026 As a special exception, the copyright holders of this library give you 027 permission to link this library with independent modules to produce an 028 executable, regardless of the license terms of these independent 029 modules, and to copy and distribute the resulting executable under 030 terms of your choice, provided that you also meet, for each linked 031 independent module, the terms and conditions of the license of that 032 module. An independent module is a module which is not derived from 033 or based on this library. If you modify this library, you may extend 034 this exception to your version of the library, but you are not 035 obligated to do so. If you do not wish to do so, delete this 036 exception statement from your version. */ 037 038 package java.nio.channels; 039 040 import java.io.IOException; 041 import java.net.ServerSocket; 042 import java.nio.channels.spi.AbstractSelectableChannel; 043 import java.nio.channels.spi.SelectorProvider; 044 045 046 /** 047 * @author Michael Koch 048 * @since 1.4 049 */ 050 public abstract class ServerSocketChannel extends AbstractSelectableChannel 051 { 052 /** 053 * Initializes this channel. 054 */ 055 protected ServerSocketChannel(SelectorProvider provider) 056 { 057 super(provider); 058 } 059 060 /** 061 * Accepts a connection made to this channel's socket. 062 * 063 * @exception IOException If an error occurs 064 * @exception AsynchronousCloseException If another thread closes this 065 * channel while the accept operation is in progress. 066 * @exception ClosedByInterruptException If another thread interrupts the 067 * current thread while the accept operation is in progress, thereby closing 068 * the channel and setting the current thread's interrupt status. 069 * @exception ClosedChannelException If the channel is closed. 070 * @exception NotYetBoundException If the channel's socket is not yet bound. 071 * @exception SecurityException If a security manager has been installed and 072 * it does not permit access to the remote endpoint of the new connection. 073 */ 074 public abstract SocketChannel accept() throws IOException; 075 076 /** 077 * Retrieves the channels socket. 078 */ 079 public abstract ServerSocket socket(); 080 081 /** 082 * Opens a server socket channel. 083 * 084 * @exception IOException If an error occurs 085 */ 086 public static ServerSocketChannel open() throws IOException 087 { 088 return SelectorProvider.provider().openServerSocketChannel(); 089 } 090 091 /** 092 * Retrieves the valid operations for this channel. 093 */ 094 public final int validOps() 095 { 096 return SelectionKey.OP_ACCEPT; 097 } 098 }