| /* SocketChannelImpl.java -- |
| Copyright (C) 2002, 2003, 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 gnu.java.nio; |
| |
| import gnu.java.net.PlainSocketImpl; |
| import gnu.java.net.VMPlainSocketImpl; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.net.InetSocketAddress; |
| import java.net.Socket; |
| import java.net.SocketAddress; |
| import java.net.SocketException; |
| import java.net.SocketTimeoutException; |
| import java.nio.ByteBuffer; |
| import java.nio.ReadOnlyBufferException; |
| import java.nio.channels.AlreadyConnectedException; |
| import java.nio.channels.ClosedChannelException; |
| import java.nio.channels.ConnectionPendingException; |
| import java.nio.channels.NoConnectionPendingException; |
| import java.nio.channels.NotYetConnectedException; |
| import java.nio.channels.SelectionKey; |
| import java.nio.channels.Selector; |
| import java.nio.channels.SocketChannel; |
| import java.nio.channels.UnresolvedAddressException; |
| import java.nio.channels.UnsupportedAddressTypeException; |
| import java.nio.channels.spi.SelectorProvider; |
| |
| public final class SocketChannelImpl extends SocketChannel |
| implements VMChannelOwner |
| { |
| private VMChannel channel; |
| //private PlainSocketImpl impl; |
| private NIOSocket socket; |
| private boolean connectionPending; |
| private boolean connected; |
| private InetSocketAddress connectAddress; |
| |
| public SocketChannelImpl(boolean create) throws IOException |
| { |
| // XXX consider adding security check; this is used by |
| // PlainSocketImpl. |
| this(new SelectorProviderImpl(), create); |
| } |
| |
| public SocketChannelImpl(VMChannel channel) throws IOException |
| { |
| this(new SelectorProviderImpl(), channel, false); |
| } |
| |
| SocketChannelImpl(SelectorProvider provider) throws IOException |
| { |
| this(provider, true); |
| } |
| |
| SocketChannelImpl(SelectorProvider provider, boolean create) |
| throws IOException |
| { |
| this(provider, new VMChannel(), create); |
| } |
| |
| SocketChannelImpl(SelectorProvider provider, VMChannel channel, boolean create) |
| throws IOException |
| { |
| super (provider); |
| this.channel = channel; |
| if (create) |
| channel.initSocket(true); |
| socket = new NIOSocket(this); |
| configureBlocking(true); |
| } |
| |
| /*SocketChannelImpl (SelectorProvider provider, |
| NIOSocket socket) |
| throws IOException |
| { |
| super (provider); |
| this.impl = socket.getPlainSocketImpl(); |
| this.socket = socket; |
| }*/ |
| |
| public void finalizer() |
| { |
| if (isConnected()) |
| { |
| try |
| { |
| close (); |
| } |
| catch (Exception e) |
| { |
| } |
| } |
| } |
| |
| //PlainSocketImpl getPlainSocketImpl() |
| //{ |
| // return null; // XXX |
| //} |
| |
| protected void implCloseSelectableChannel() throws IOException |
| { |
| channel.close(); |
| } |
| |
| protected void implConfigureBlocking (boolean blocking) throws IOException |
| { |
| channel.setBlocking(blocking); |
| } |
| |
| public boolean connect (SocketAddress remote) throws IOException |
| { |
| return connect(remote, 0); |
| } |
| |
| public boolean connect (SocketAddress remote, int timeout) throws IOException |
| { |
| if (!isOpen()) |
| throw new ClosedChannelException(); |
| |
| if (isConnected()) |
| throw new AlreadyConnectedException(); |
| |
| if (connectionPending) |
| throw new ConnectionPendingException(); |
| |
| if (!(remote instanceof InetSocketAddress)) |
| throw new UnsupportedAddressTypeException(); |
| |
| connectAddress = (InetSocketAddress) remote; |
| |
| if (connectAddress.isUnresolved()) |
| throw new UnresolvedAddressException(); |
| |
| connected = channel.connect(connectAddress, timeout); |
| connectionPending = !connected; |
| return connected; |
| } |
| |
| public boolean finishConnect() |
| throws IOException |
| { |
| if (!isOpen()) |
| throw new ClosedChannelException(); |
| |
| InetSocketAddress remote = channel.getPeerAddress(); |
| if (remote != null) |
| { |
| connectionPending = false; |
| return true; |
| } |
| |
| if (!connectionPending) |
| throw new NoConnectionPendingException(); |
| |
| return false; |
| } |
| |
| public boolean isConnected() |
| { |
| // Wait until finishConnect is called before transitioning to |
| // connected. |
| if (connectionPending) |
| return false; |
| try |
| { |
| InetSocketAddress remote = channel.getPeerAddress(); |
| return remote != null; |
| } |
| catch (IOException ioe) |
| { |
| ioe.printStackTrace(System.out); |
| return false; |
| } |
| } |
| |
| public boolean isConnectionPending () |
| { |
| return connectionPending; |
| } |
| |
| public Socket socket () |
| { |
| return socket; |
| } |
| |
| public int read(ByteBuffer dst) throws IOException |
| { |
| if (!isConnected()) |
| throw new NotYetConnectedException(); |
| |
| return channel.read(dst); |
| } |
| |
| public long read (ByteBuffer[] dsts, int offset, int length) |
| throws IOException |
| { |
| if (!isConnected()) |
| throw new NotYetConnectedException(); |
| |
| if ((offset < 0) |
| || (offset > dsts.length) |
| || (length < 0) |
| || (length > (dsts.length - offset))) |
| throw new IndexOutOfBoundsException(); |
| |
| return channel.readScattering(dsts, offset, length); |
| } |
| |
| public int write(ByteBuffer src) throws IOException |
| { |
| if (!isConnected()) |
| throw new NotYetConnectedException(); |
| |
| return channel.write(src); |
| } |
| |
| public long write(ByteBuffer[] srcs, int offset, int length) |
| throws IOException |
| { |
| if (!isConnected()) |
| throw new NotYetConnectedException(); |
| |
| if ((offset < 0) |
| || (offset > srcs.length) |
| || (length < 0) |
| || (length > (srcs.length - offset))) |
| throw new IndexOutOfBoundsException(); |
| |
| return channel.writeGathering(srcs, offset, length); |
| } |
| |
| public VMChannel getVMChannel() |
| { |
| // XXX security check? |
| return channel; |
| } |
| } |