--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/nio/channels/ServerSocketChannel.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2000-2001 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package java.nio.channels;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.SocketAddress;
+import java.nio.channels.spi.*;
+
+
+/**
+ * A selectable channel for stream-oriented listening sockets.
+ *
+ * <p> Server-socket channels are not a complete abstraction of listening
+ * network sockets. Binding and the manipulation of socket options must be
+ * done through an associated {@link java.net.ServerSocket} object obtained by
+ * invoking the {@link #socket() socket} method. It is not possible to create
+ * a channel for an arbitrary, pre-existing server socket, nor is it possible
+ * to specify the {@link java.net.SocketImpl} object to be used by a server
+ * socket associated with a server-socket channel.
+ *
+ * <p> A server-socket channel is created by invoking the {@link #open() open}
+ * method of this class. A newly-created server-socket channel is open but not
+ * yet bound. An attempt to invoke the {@link #accept() accept} method of an
+ * unbound server-socket channel will cause a {@link NotYetBoundException} to
+ * be thrown. A server-socket channel can be bound by invoking one of the
+ * {@link java.net.ServerSocket#bind(java.net.SocketAddress,int) bind} methods
+ * of an associated server socket.
+ *
+ * <p> Server-socket channels are safe for use by multiple concurrent threads.
+ * </p>
+ *
+ *
+ * @author Mark Reinhold
+ * @author JSR-51 Expert Group
+ * @since 1.4
+ */
+
+public abstract class ServerSocketChannel
+ extends AbstractSelectableChannel
+{
+
+ /**
+ * Initializes a new instance of this class.
+ */
+ protected ServerSocketChannel(SelectorProvider provider) {
+ super(provider);
+ }
+
+ /**
+ * Opens a server-socket channel.
+ *
+ * <p> The new channel is created by invoking the {@link
+ * java.nio.channels.spi.SelectorProvider#openServerSocketChannel
+ * openServerSocketChannel} method of the system-wide default {@link
+ * java.nio.channels.spi.SelectorProvider} object.
+ *
+ * <p> The new channel's socket is initially unbound; it must be bound to a
+ * specific address via one of its socket's {@link
+ * java.net.ServerSocket#bind(SocketAddress) bind} methods before
+ * connections can be accepted. </p>
+ *
+ * @return A new socket channel
+ *
+ * @throws IOException
+ * If an I/O error occurs
+ */
+ public static ServerSocketChannel open() throws IOException {
+ return SelectorProvider.provider().openServerSocketChannel();
+ }
+
+ /**
+ * Returns an operation set identifying this channel's supported
+ * operations.
+ *
+ * <p> Server-socket channels only support the accepting of new
+ * connections, so this method returns {@link SelectionKey#OP_ACCEPT}.
+ * </p>
+ *
+ * @return The valid-operation set
+ */
+ public final int validOps() {
+ return SelectionKey.OP_ACCEPT;
+ }
+
+
+ // -- ServerSocket-specific operations --
+
+ /**
+ * Retrieves a server socket associated with this channel.
+ *
+ * <p> The returned object will not declare any public methods that are not
+ * declared in the {@link java.net.ServerSocket} class. </p>
+ *
+ * @return A server socket associated with this channel
+ */
+ public abstract ServerSocket socket();
+
+ /**
+ * Accepts a connection made to this channel's socket.
+ *
+ * <p> If this channel is in non-blocking mode then this method will
+ * immediately return <tt>null</tt> if there are no pending connections.
+ * Otherwise it will block indefinitely until a new connection is available
+ * or an I/O error occurs.
+ *
+ * <p> The socket channel returned by this method, if any, will be in
+ * blocking mode regardless of the blocking mode of this channel.
+ *
+ * <p> This method performs exactly the same security checks as the {@link
+ * java.net.ServerSocket#accept accept} method of the {@link
+ * java.net.ServerSocket} class. That is, if a security manager has been
+ * installed then for each new connection this method verifies that the
+ * address and port number of the connection's remote endpoint are
+ * permitted by the security manager's {@link
+ * java.lang.SecurityManager#checkAccept checkAccept} method. </p>
+ *
+ * @return The socket channel for the new connection,
+ * or <tt>null</tt> if this channel is in non-blocking mode
+ * and no connection is available to be accepted
+ *
+ * @throws ClosedChannelException
+ * If this channel is closed
+ *
+ * @throws AsynchronousCloseException
+ * If another thread closes this channel
+ * while the accept operation is in progress
+ *
+ * @throws ClosedByInterruptException
+ * If another thread interrupts the current thread
+ * while the accept operation is in progress, thereby
+ * closing the channel and setting the current thread's
+ * interrupt status
+ *
+ * @throws NotYetBoundException
+ * If this channel's socket has not yet been bound
+ *
+ * @throws SecurityException
+ * If a security manager has been installed
+ * and it does not permit access to the remote endpoint
+ * of the new connection
+ *
+ * @throws IOException
+ * If some other I/O error occurs
+ */
+ public abstract SocketChannel accept() throws IOException;
+
+}