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/*
* Copyright (c) 2000, 2008, Oracle and/or its affiliates. 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.nio.ch;
import java.io.*;
import java.net.*;
import java.nio.channels.*;
// Make a server-socket channel look like a server socket.
//
// The methods in this class are defined in exactly the same order as in
// java.net.ServerSocket so as to simplify tracking future changes to that
// class.
//
public class ServerSocketAdaptor // package-private
extends ServerSocket
{
// The channel being adapted
private final ServerSocketChannelImpl ssc;
// Timeout "option" value for accepts
private volatile int timeout = 0;
public static ServerSocket create(ServerSocketChannelImpl ssc) {
try {
return new ServerSocketAdaptor(ssc);
} catch (IOException x) {
throw new Error(x);
}
}
// ## super will create a useless impl
private ServerSocketAdaptor(ServerSocketChannelImpl ssc)
throws IOException
{
this.ssc = ssc;
}
public void bind(SocketAddress local) throws IOException {
bind(local, 50);
}
public void bind(SocketAddress local, int backlog) throws IOException {
if (local == null)
local = new InetSocketAddress(0);
try {
ssc.bind(local, backlog);
} catch (Exception x) {
Net.translateException(x);
}
}
public InetAddress getInetAddress() {
if (!ssc.isBound())
return null;
return Net.asInetSocketAddress(ssc.localAddress()).getAddress();
}
public int getLocalPort() {
if (!ssc.isBound())
return -1;
return Net.asInetSocketAddress(ssc.localAddress()).getPort();
}
public Socket accept() throws IOException {
synchronized (ssc.blockingLock()) {
if (!ssc.isBound())
throw new IllegalBlockingModeException();
try {
if (timeout == 0) {
SocketChannel sc = ssc.accept();
if (sc == null && !ssc.isBlocking())
throw new IllegalBlockingModeException();
return sc.socket();
}
// Implement timeout with a selector
SelectionKey sk = null;
Selector sel = null;
ssc.configureBlocking(false);
try {
SocketChannel sc;
if ((sc = ssc.accept()) != null)
return sc.socket();
sel = Util.getTemporarySelector(ssc);
sk = ssc.register(sel, SelectionKey.OP_ACCEPT);
long to = timeout;
for (;;) {
if (!ssc.isOpen())
throw new ClosedChannelException();
long st = System.currentTimeMillis();
int ns = sel.select(to);
if (ns > 0 &&
sk.isAcceptable() && ((sc = ssc.accept()) != null))
return sc.socket();
sel.selectedKeys().remove(sk);
to -= System.currentTimeMillis() - st;
if (to <= 0)
throw new SocketTimeoutException();
}
} finally {
if (sk != null)
sk.cancel();
if (ssc.isOpen())
ssc.configureBlocking(true);
if (sel != null)
Util.releaseTemporarySelector(sel);
}
} catch (Exception x) {
Net.translateException(x);
assert false;
return null; // Never happens
}
}
}
public void close() throws IOException {
ssc.close();
}
public ServerSocketChannel getChannel() {
return ssc;
}
public boolean isBound() {
return ssc.isBound();
}
public boolean isClosed() {
return !ssc.isOpen();
}
public void setSoTimeout(int timeout) throws SocketException {
this.timeout = timeout;
}
public int getSoTimeout() throws SocketException {
return timeout;
}
public void setReuseAddress(boolean on) throws SocketException {
try {
ssc.setOption(StandardSocketOption.SO_REUSEADDR, on);
} catch (IOException x) {
Net.translateToSocketException(x);
}
}
public boolean getReuseAddress() throws SocketException {
try {
return ssc.getOption(StandardSocketOption.SO_REUSEADDR).booleanValue();
} catch (IOException x) {
Net.translateToSocketException(x);
return false; // Never happens
}
}
public String toString() {
if (!isBound())
return "ServerSocket[unbound]";
return "ServerSocket[addr=" + getInetAddress() +
// ",port=" + getPort() +
",localport=" + getLocalPort() + "]";
}
public void setReceiveBufferSize(int size) throws SocketException {
// size 0 valid for ServerSocketChannel, invalid for ServerSocket
if (size <= 0)
throw new IllegalArgumentException("size cannot be 0 or negative");
try {
ssc.setOption(StandardSocketOption.SO_RCVBUF, size);
} catch (IOException x) {
Net.translateToSocketException(x);
}
}
public int getReceiveBufferSize() throws SocketException {
try {
return ssc.getOption(StandardSocketOption.SO_RCVBUF).intValue();
} catch (IOException x) {
Net.translateToSocketException(x);
return -1; // Never happens
}
}
}
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