Initial revision
From-SVN: r102074
This commit is contained in:
Tom Tromey
parent
6f4434b39b
commit
f911ba985a
4557 changed files with 1000262 additions and 0 deletions
248
libjava/classpath/java/nio/channels/SocketChannel.java
Normal file
248
libjava/classpath/java/nio/channels/SocketChannel.java
Normal file
|
|
@ -0,0 +1,248 @@
|
|||
/* SocketChannel.java --
|
||||
Copyright (C) 2002, 2004 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GNU Classpath.
|
||||
|
||||
GNU Classpath is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
GNU Classpath 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 for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
02110-1301 USA.
|
||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
combination.
|
||||
|
||||
As a special exception, the copyright holders of this library give you
|
||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
|
||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
independent module, the terms and conditions of the license of that
|
||||
module. An independent module is a module which is not derived from
|
||||
or based on this library. If you modify this library, you may extend
|
||||
this exception to your version of the library, but you are not
|
||||
obligated to do so. If you do not wish to do so, delete this
|
||||
exception statement from your version. */
|
||||
|
||||
|
||||
package java.nio.channels;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.net.Socket;
|
||||
import java.net.SocketAddress;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.channels.spi.AbstractSelectableChannel;
|
||||
import java.nio.channels.spi.SelectorProvider;
|
||||
|
||||
/**
|
||||
* @author Michael Koch (konqueror@gmx.de)
|
||||
* @since 1.4
|
||||
*/
|
||||
public abstract class SocketChannel extends AbstractSelectableChannel
|
||||
implements ByteChannel, ScatteringByteChannel, GatheringByteChannel
|
||||
{
|
||||
/**
|
||||
* Initializes this socket channel.
|
||||
*/
|
||||
protected SocketChannel(SelectorProvider provider)
|
||||
{
|
||||
super(provider);
|
||||
}
|
||||
|
||||
/**
|
||||
* Opens a socket channel.
|
||||
*
|
||||
* @return the new <code>SocketChannel</code> object
|
||||
*
|
||||
* @exception IOException If an error occurs
|
||||
*/
|
||||
public static SocketChannel open() throws IOException
|
||||
{
|
||||
return SelectorProvider.provider().openSocketChannel();
|
||||
}
|
||||
|
||||
/**
|
||||
* Opens a channel and connects it to a remote address.
|
||||
*
|
||||
* @return the new <code>SocketChannel</code> object
|
||||
*
|
||||
* @exception AsynchronousCloseException If this channel is already connected.
|
||||
* @exception ClosedByInterruptException If another thread interrupts the
|
||||
* current thread while the connect operation is in progress, thereby closing
|
||||
* the channel and setting the current thread's interrupt status.
|
||||
* @exception IOException If an error occurs
|
||||
* @exception SecurityException If a security manager has been installed and
|
||||
* it does not permit access to the given remote endpoint.
|
||||
* @exception UnresolvedAddressException If the given remote address is not
|
||||
* fully resolved.
|
||||
* @exception UnsupportedAddressTypeException If the type of the given remote
|
||||
* address is not supported.
|
||||
*/
|
||||
public static SocketChannel open(SocketAddress remote)
|
||||
throws IOException
|
||||
{
|
||||
SocketChannel ch = open();
|
||||
ch.connect(remote);
|
||||
return ch;
|
||||
}
|
||||
|
||||
/**
|
||||
* Reads data from the channel.
|
||||
*
|
||||
* @return the number of bytes read, zero is valid too, -1 if end of stream
|
||||
* is reached
|
||||
*
|
||||
* @exception IOException If an error occurs
|
||||
* @exception NotYetConnectedException If this channel is not yet connected.
|
||||
*/
|
||||
public final long read(ByteBuffer[] dsts) throws IOException
|
||||
{
|
||||
long b = 0;
|
||||
|
||||
for (int i = 0; i < dsts.length; i++)
|
||||
b += read(dsts[i]);
|
||||
|
||||
return b;
|
||||
}
|
||||
|
||||
/**
|
||||
* Writes data to the channel.
|
||||
*
|
||||
* @return the number of bytes written, zero is valid too
|
||||
*
|
||||
* @exception IOException If an error occurs
|
||||
* @exception NotYetConnectedException If this channel is not yet connected.
|
||||
*/
|
||||
public final long write(ByteBuffer[] dsts) throws IOException
|
||||
{
|
||||
long b = 0;
|
||||
|
||||
for (int i = 0; i < dsts.length; i++)
|
||||
b += write(dsts[i]);
|
||||
|
||||
return b;
|
||||
}
|
||||
|
||||
/**
|
||||
* Retrieves the valid operations for this channel.
|
||||
*
|
||||
* @return the valid operations
|
||||
*/
|
||||
public final int validOps()
|
||||
{
|
||||
return SelectionKey.OP_CONNECT | SelectionKey.OP_READ
|
||||
| SelectionKey.OP_WRITE;
|
||||
}
|
||||
|
||||
/**
|
||||
* Reads data from the channel.
|
||||
*
|
||||
* @return the number of bytes read, zero is valid too, -1 if end of stream
|
||||
* is reached
|
||||
*
|
||||
* @exception IOException If an error occurs
|
||||
* @exception NotYetConnectedException If this channel is not yet connected.
|
||||
*/
|
||||
public abstract int read(ByteBuffer dst) throws IOException;
|
||||
|
||||
/**
|
||||
* Connects the channel's socket to the remote address.
|
||||
*
|
||||
* @return <code>true</code> if the channel got successfully connected,
|
||||
* <code>false</code> if the channel is in non-blocking mode and connection
|
||||
* operation is still in progress.
|
||||
*
|
||||
* @exception AlreadyConnectedException If this channel is already connected.
|
||||
* @exception AsynchronousCloseException If this channel is already connected.
|
||||
* @exception ClosedByInterruptException If another thread interrupts the
|
||||
* current thread while the connect operation is in progress, thereby closing
|
||||
* the channel and setting the current thread's interrupt status.
|
||||
* @exception ClosedChannelException If this channel is closed.
|
||||
* @exception ConnectionPendingException If a non-blocking connection
|
||||
* operation is already in progress on this channel.
|
||||
* @exception IOException If an error occurs
|
||||
* @exception SecurityException If a security manager has been installed and
|
||||
* it does not permit access to the given remote endpoint.
|
||||
* @exception UnresolvedAddressException If the given remote address is not
|
||||
* fully resolved.
|
||||
* @exception UnsupportedAddressTypeException If the type of the given remote
|
||||
* address is not supported.
|
||||
*/
|
||||
public abstract boolean connect(SocketAddress remote)
|
||||
throws IOException;
|
||||
|
||||
/**
|
||||
* Finishes the process of connecting a socket channel.
|
||||
*
|
||||
* @exception AsynchronousCloseException If this channel is already connected.
|
||||
* @exception ClosedByInterruptException If another thread interrupts the
|
||||
* current thread while the connect operation is in progress, thereby closing
|
||||
* the channel and setting the current thread's interrupt status.
|
||||
* @exception ClosedChannelException If this channel is closed.
|
||||
* @exception IOException If an error occurs
|
||||
* @exception NoConnectionPendingException If this channel is not connected
|
||||
* and a connection operation has not been initiated.
|
||||
*/
|
||||
public abstract boolean finishConnect() throws IOException;
|
||||
|
||||
/**
|
||||
* Tells whether or not the channel's socket is connected.
|
||||
*/
|
||||
public abstract boolean isConnected();
|
||||
|
||||
/**
|
||||
* Tells whether or not a connection operation is in progress on this channel.
|
||||
*/
|
||||
public abstract boolean isConnectionPending();
|
||||
|
||||
/**
|
||||
* Reads data from the channel.
|
||||
*
|
||||
* @return the number of bytes read, zero is valid too, -1 if end of stream
|
||||
* is reached
|
||||
*
|
||||
* @exception IOException If an error occurs
|
||||
* @exception NotYetConnectedException If this channel is not yet connected.
|
||||
*/
|
||||
public abstract long read(ByteBuffer[] dsts, int offset, int length)
|
||||
throws IOException;
|
||||
|
||||
/**
|
||||
* Retrieves the channel's socket.
|
||||
*
|
||||
* @return the socket
|
||||
*/
|
||||
public abstract Socket socket();
|
||||
|
||||
/**
|
||||
* Writes data to the channel.
|
||||
*
|
||||
* @return the number of bytes written, zero is valid too
|
||||
*
|
||||
* @exception IOException If an error occurs
|
||||
* @exception NotYetConnectedException If this channel is not yet connected.
|
||||
*/
|
||||
public abstract int write(ByteBuffer src) throws IOException;
|
||||
|
||||
/**
|
||||
* Writes data to the channel.
|
||||
*
|
||||
* @return the number of bytes written, zero is valid too
|
||||
*
|
||||
* @exception IOException If an error occurs
|
||||
* @exception NotYetConnectedException If this channel is not yet connected.
|
||||
*/
|
||||
public abstract long write(ByteBuffer[] srcs, int offset, int length)
|
||||
throws IOException;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue