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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [java/] [net/] [SocketOptions.java] - Blame information for rev 771

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1 771 jeremybenn 
/* SocketOptions.java -- Implements options for sockets (duh!)
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   Copyright (C) 1998, 1999, 2000, 2001,
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                 2002, 2003 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING.  If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library.  Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module.  An independent module is a module which is not derived from
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or based on this library.  If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so.  If you do not wish to do so, delete this
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exception statement from your version. */
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package java.net;
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/**
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 * Written using on-line Java Platform 1.2 API Specification.
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 * Status:  Believed complete and correct.
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 */
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/**
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 * This interface is used by <code>SocketImpl</code> and
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 * <code>DatagramSocketImpl</code> to implement options
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 * on sockets.
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 *
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 * @since 1.2
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 *
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 * @author Aaron M. Renn (arenn@urbanophile.com)
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 * @author Warren Levy (warrenl@cygnus.com)
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 * @status should be completely JDK 1.4 compatible
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 */
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public interface SocketOptions
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{
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  /**
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   * Option id for the SO_KEEPALIVE value
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   * @since 1.3
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   */
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  int SO_KEEPALIVE = 0x8;
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  /**
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   * Option id for the SO_LINGER value
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   */
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  int SO_LINGER = 0x80; // 128
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  /**
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   * Option id for the SO_TIMEOUT value
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   */
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  int SO_TIMEOUT = 0x1006; // 4102
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  /**
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   * Retrieve the local address to which the socket is bound.
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   */
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  int SO_BINDADDR = 0x0F; // 15
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  /**
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   * Option id for the send buffer size
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   * @since 1.2
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   */
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  int SO_SNDBUF = 0x1001; // 4097
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  /**
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   * Option id for the receive buffer size
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   * @since 1.2
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   */
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  int SO_RCVBUF = 0x1002; // 4098
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  /**
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   * Sets the SO_REUSEADDR parameter on a socket
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   */
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  int SO_REUSEADDR = 0x04; // 4
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  /**
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   * Sets SO_BROADCAST for a socket
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   * @since 1.4
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   */
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  int SO_BROADCAST = 0x20; // 32
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  /**
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   * Sets SO_OOBINLINE for a socket
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   * @since 1.4
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   */
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  int SO_OOBINLINE = 0x1003; // 4099
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  /**
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   * Option id for the TCP_NODELAY value
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   */
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  int TCP_NODELAY = 0x01; // 1
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  /**
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   * Options id for the IP_MULTICAST_IF value
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   */
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  int IP_MULTICAST_IF = 0x10; // 16
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  /**
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   * same as above
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   * @since 1.4
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   */
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  int IP_MULTICAST_IF2 = 0x1F; // 31
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  /**
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   * This option enables or disables local loopback of multicast datagrams.
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   * @since 1.4
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   */
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  int IP_MULTICAST_LOOP = 0x12; // 18
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  /**
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   * This option sets the type-of-service or traffic class field in the
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   * IP header for a TCP or UDP socket.
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   * @since 1.4
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   */
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  int IP_TOS = 0x03; // 3
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  /**
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   * Sets the specified option on a socket to the passed in object.  For
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   * options that take an integer argument, the passed in object is an
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   * <code>Integer</code>.  For options that are set to on or off, the
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   * value passed will be a <code>Boolean</code>.   The <code>optionId</code>
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   * parameter is one of the defined constants in this interface.
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   *
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   * @param optionId The identifier of the option
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   * @param val The value to set the option to
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   *
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   * @exception SocketException If an error occurs
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   */
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  void setOption(int optionId, Object val) throws SocketException;
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  /**
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   * Returns the current setting of the specified option.  The
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   * <code>Object</code> returned will be an <code>Integer</code> for options
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   * that have integer values.  For options that are set to on or off, a
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   * <code>Boolean</code> will be returned.   The <code>optionId</code>
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   * parameter is one of the defined constants in this interface.
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   *
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   * @param optionId The option identifier
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   *
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   * @return The current value of the option
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   *
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   * @exception SocketException If an error occurs
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   */
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  Object getOption(int optionId) throws SocketException;
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} // interface SocketOptions

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