2362N/A * Copyright (c) 2000, 2009, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A * A selectable channel for stream-oriented listening sockets. 524N/A * <p> A server-socket channel is created by invoking the {@link #open() open} 524N/A * method of this class. It is not possible to create a channel for an arbitrary, 524N/A * pre-existing {@link ServerSocket}. A newly-created server-socket channel is 524N/A * open but not yet bound. An attempt to invoke the {@link #accept() accept} 524N/A * method of an unbound server-socket channel will cause a {@link NotYetBoundException} 524N/A * to be thrown. A server-socket channel can be bound by invoking one of the 524N/A * {@link #bind(java.net.SocketAddress,int) bind} methods defined by this class. 524N/A * <p> Socket options are configured using the {@link #setOption(SocketOption,Object) 524N/A * setOption} method. Server-socket channels support the following options: 4216N/A * <td> {@link java.net.StandardSocketOptions#SO_RCVBUF SO_RCVBUF} </td> 524N/A * <td> The size of the socket receive buffer </td> 4216N/A * <td> {@link java.net.StandardSocketOptions#SO_REUSEADDR SO_REUSEADDR} </td> 524N/A * <td> Re-use address </td> 524N/A * Additional (implementation specific) options may also be supported. 0N/A * <p> Server-socket channels are safe for use by multiple concurrent threads. 0N/A * @author Mark Reinhold 0N/A * @author JSR-51 Expert Group 0N/A * Initializes a new instance of this class. 0N/A * Opens a server-socket channel. 0N/A * <p> The new channel is created by invoking the {@link 0N/A * java.nio.channels.spi.SelectorProvider#openServerSocketChannel 0N/A * openServerSocketChannel} method of the system-wide default {@link 0N/A * java.nio.channels.spi.SelectorProvider} object. 0N/A * <p> The new channel's socket is initially unbound; it must be bound to a 0N/A * specific address via one of its socket's {@link 0N/A * java.net.ServerSocket#bind(SocketAddress) bind} methods before 0N/A * connections can be accepted. </p> 0N/A * @return A new socket channel 0N/A * @throws IOException 0N/A * If an I/O error occurs 0N/A * Returns an operation set identifying this channel's supported 0N/A * <p> Server-socket channels only support the accepting of new 0N/A * connections, so this method returns {@link SelectionKey#OP_ACCEPT}. 0N/A * @return The valid-operation set 0N/A // -- ServerSocket-specific operations -- 524N/A * Binds the channel's socket to a local address and configures the socket 524N/A * to listen for connections. 524N/A * <p> An invocation of this method is equivalent to the following: 524N/A * The local address to bind the socket, or {@code null} to bind 524N/A * to an automatically assigned socket address 524N/A * @throws AlreadyBoundException {@inheritDoc} 524N/A * @throws UnsupportedAddressTypeException {@inheritDoc} 524N/A * @throws ClosedChannelException {@inheritDoc} 524N/A * @throws IOException {@inheritDoc} 524N/A * @throws SecurityException 524N/A * If a security manager has been installed and its {@link 524N/A * SecurityManager#checkListen checkListen} method denies the 524N/A * Binds the channel's socket to a local address and configures the socket to 524N/A * listen for connections. 524N/A * <p> This method is used to establish an association between the socket and 524N/A * a local address. Once an association is established then the socket remains 524N/A * bound until the channel is closed. 524N/A * <p> The {@code backlog} parameter is the maximum number of pending 524N/A * connections on the socket. Its exact semantics are implementation specific. 524N/A * In particular, an implementation may impose a maximum length or may choose 524N/A * to ignore the parameter altogther. If the {@code backlog} parameter has 524N/A * the value {@code 0}, or a negative value, then an implementation specific 524N/A * The address to bind the socket, or {@code null} to bind to an 524N/A * automatically assigned socket address 524N/A * The maximum number of pending connections 524N/A * @throws AlreadyBoundException 524N/A * If the socket is already bound 524N/A * @throws UnsupportedAddressTypeException 524N/A * If the type of the given address is not supported 524N/A * @throws ClosedChannelException 524N/A * If this channel is closed 524N/A * If some other I/O error occurs 524N/A * @throws SecurityException 524N/A * If a security manager has been installed and its {@link 524N/A * SecurityManager#checkListen checkListen} method denies the 893N/A * @throws UnsupportedOperationException {@inheritDoc} 524N/A * @throws IllegalArgumentException {@inheritDoc} 524N/A * @throws ClosedChannelException {@inheritDoc} 524N/A * @throws IOException {@inheritDoc} 0N/A * Retrieves a server socket associated with this channel. 0N/A * <p> The returned object will not declare any public methods that are not 0N/A * declared in the {@link java.net.ServerSocket} class. </p> 0N/A * @return A server socket associated with this channel 0N/A * Accepts a connection made to this channel's socket. 0N/A * <p> If this channel is in non-blocking mode then this method will 0N/A * immediately return <tt>null</tt> if there are no pending connections. 0N/A * Otherwise it will block indefinitely until a new connection is available 0N/A * or an I/O error occurs. 0N/A * <p> The socket channel returned by this method, if any, will be in 0N/A * blocking mode regardless of the blocking mode of this channel. 0N/A * <p> This method performs exactly the same security checks as the {@link 0N/A * java.net.ServerSocket#accept accept} method of the {@link 0N/A * java.net.ServerSocket} class. That is, if a security manager has been 0N/A * installed then for each new connection this method verifies that the 0N/A * address and port number of the connection's remote endpoint are 0N/A * permitted by the security manager's {@link 0N/A * java.lang.SecurityManager#checkAccept checkAccept} method. </p> 0N/A * @return The socket channel for the new connection, 0N/A * or <tt>null</tt> if this channel is in non-blocking mode 0N/A * and no connection is available to be accepted 0N/A * @throws ClosedChannelException 0N/A * If this channel is closed 0N/A * @throws AsynchronousCloseException 0N/A * If another thread closes this channel 0N/A * while the accept operation is in progress 0N/A * @throws ClosedByInterruptException 0N/A * If another thread interrupts the current thread 0N/A * while the accept operation is in progress, thereby 0N/A * closing the channel and setting the current thread's 0N/A * @throws NotYetBoundException 0N/A * If this channel's socket has not yet been bound 0N/A * @throws SecurityException 0N/A * If a security manager has been installed 0N/A * and it does not permit access to the remote endpoint 0N/A * of the new connection 0N/A * @throws IOException 0N/A * If some other I/O error occurs