/*
* Copyright (c) 2000, 2006, 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.lang.ref.*;
import java.net.*;
import java.nio.*;
import java.nio.channels.*;
import java.security.AccessController;
import java.security.PrivilegedExceptionAction;
import java.util.*;
// Make a socket channel look like a socket.
//
// The only aspects of java.net.Socket-hood that we don't attempt to emulate
// here are the interrupted-I/O exceptions (which our Solaris implementations
// attempt to support) and the sending of urgent data. Otherwise an adapted
// socket should look enough like a real java.net.Socket to fool most of the
// developers most of the time, right down to the exception message strings.
//
// The methods in this class are defined in exactly the same order as in
// java.net.Socket so as to simplify tracking future changes to that class.
//
public class SocketAdaptor
extends Socket
{
// The channel being adapted
private final SocketChannelImpl sc;
// Option adaptor object, created on demand
private volatile OptionAdaptor opts = null;
// Timeout "option" value for reads
private volatile int timeout = 0;
// Traffic-class/Type-of-service
private volatile int trafficClass = 0;
// ## super will create a useless impl
private SocketAdaptor(SocketChannelImpl sc) {
this.sc = sc;
}
public static Socket create(SocketChannelImpl sc) {
return new SocketAdaptor(sc);
}
public SocketChannel getChannel() {
return sc;
}
// Override this method just to protect against changes in the superclass
//
public void connect(SocketAddress remote) throws IOException {
connect(remote, 0);
}
public void connect(SocketAddress remote, int timeout) throws IOException {
if (remote == null)
throw new IllegalArgumentException("connect: The address can't be null");
if (timeout < 0)
throw new IllegalArgumentException("connect: timeout can't be negative");
synchronized (sc.blockingLock()) {
if (!sc.isBlocking())
throw new IllegalBlockingModeException();
try {
if (timeout == 0) {
sc.connect(remote);
return;
}
// Implement timeout with a selector
SelectionKey sk = null;
Selector sel = null;
sc.configureBlocking(false);
try {
if (sc.connect(remote))
return;
sel = Util.getTemporarySelector(sc);
sk = sc.register(sel, SelectionKey.OP_CONNECT);
long to = timeout;
for (;;) {
if (!sc.isOpen())
throw new ClosedChannelException();
long st = System.currentTimeMillis();
int ns = sel.select(to);
if (ns > 0 &&
sk.isConnectable() && sc.finishConnect())
break;
sel.selectedKeys().remove(sk);
to -= System.currentTimeMillis() - st;
if (to <= 0) {
try {
sc.close();
} catch (IOException x) { }
throw new SocketTimeoutException();
}
}
} finally {
if (sk != null)
sk.cancel();
if (sc.isOpen())
sc.configureBlocking(true);
if (sel != null)
Util.releaseTemporarySelector(sel);
}
} catch (Exception x) {
Net.translateException(x, true);
}
}
}
public void bind(SocketAddress local) throws IOException {
try {
if (local == null)
local = new InetSocketAddress(0);
sc.bind(local);
} catch (Exception x) {
Net.translateException(x);
}
}
public InetAddress getInetAddress() {
if (!sc.isConnected())
return null;
return Net.asInetSocketAddress(sc.remoteAddress()).getAddress();
}
public InetAddress getLocalAddress() {
if (!sc.isBound())
return new InetSocketAddress(0).getAddress();
return Net.asInetSocketAddress(sc.localAddress()).getAddress();
}
public int getPort() {
if (!sc.isConnected())
return 0;
return Net.asInetSocketAddress(sc.remoteAddress()).getPort();
}
public int getLocalPort() {
if (!sc.isBound())
return -1;
return Net.asInetSocketAddress(sc.localAddress()).getPort();
}
private class SocketInputStream
extends ChannelInputStream
{
private SocketInputStream() {
super(sc);
}
protected int read(ByteBuffer bb)
throws IOException
{
synchronized (sc.blockingLock()) {
if (!sc.isBlocking())
throw new IllegalBlockingModeException();
if (timeout == 0)
return sc.read(bb);
// Implement timeout with a selector
SelectionKey sk = null;
Selector sel = null;
sc.configureBlocking(false);
try {
int n;
if ((n = sc.read(bb)) != 0)
return n;
sel = Util.getTemporarySelector(sc);
sk = sc.register(sel, SelectionKey.OP_READ);
long to = timeout;
for (;;) {
if (!sc.isOpen())
throw new ClosedChannelException();
long st = System.currentTimeMillis();
int ns = sel.select(to);
if (ns > 0 && sk.isReadable()) {
if ((n = sc.read(bb)) != 0)
return n;
}
sel.selectedKeys().remove(sk);
to -= System.currentTimeMillis() - st;
if (to <= 0)
throw new SocketTimeoutException();
}
} finally {
if (sk != null)
sk.cancel();
if (sc.isOpen())
sc.configureBlocking(true);
if (sel != null)
Util.releaseTemporarySelector(sel);
}
}
}
}
private InputStream socketInputStream = null;
public InputStream getInputStream() throws IOException {
if (!sc.isOpen())
throw new SocketException("Socket is closed");
if (!sc.isConnected())
throw new SocketException("Socket is not connected");
if (!sc.isInputOpen())
throw new SocketException("Socket input is shutdown");
if (socketInputStream == null) {
try {
socketInputStream = (InputStream)AccessController.doPrivileged(
new PrivilegedExceptionAction() {
public Object run() throws IOException {
return new SocketInputStream();
}
});
} catch (java.security.PrivilegedActionException e) {
throw (IOException)e.getException();
}
}
return socketInputStream;
}
public OutputStream getOutputStream() throws IOException {
if (!sc.isOpen())
throw new SocketException("Socket is closed");
if (!sc.isConnected())
throw new SocketException("Socket is not connected");
if (!sc.isOutputOpen())
throw new SocketException("Socket output is shutdown");
OutputStream os = null;
try {
os = (OutputStream)
AccessController.doPrivileged(new PrivilegedExceptionAction() {
public Object run() throws IOException {
return Channels.newOutputStream(sc);
}
});
} catch (java.security.PrivilegedActionException e) {
throw (IOException)e.getException();
}
return os;
}
private OptionAdaptor opts() {
if (opts == null)
opts = new OptionAdaptor(sc);
return opts;
}
public void setTcpNoDelay(boolean on) throws SocketException {
opts().setTcpNoDelay(on);
}
public boolean getTcpNoDelay() throws SocketException {
return opts().getTcpNoDelay();
}
public void setSoLinger(boolean on, int linger) throws SocketException {
opts().setSoLinger(on, linger);
}
public int getSoLinger() throws SocketException {
return opts().getSoLinger();
}
public void sendUrgentData(int data) throws IOException {
throw new SocketException("Urgent data not supported");
}
public void setOOBInline(boolean on) throws SocketException {
opts().setOOBInline(on);
}
public boolean getOOBInline() throws SocketException {
return opts().getOOBInline();
}
public void setSoTimeout(int timeout) throws SocketException {
if (timeout < 0)
throw new IllegalArgumentException("timeout can't be negative");
this.timeout = timeout;
}
public int getSoTimeout() throws SocketException {
return timeout;
}
public void setSendBufferSize(int size) throws SocketException {
opts().setSendBufferSize(size);
}
public int getSendBufferSize() throws SocketException {
return opts().getSendBufferSize();
}
public void setReceiveBufferSize(int size) throws SocketException {
opts().setReceiveBufferSize(size);
}
public int getReceiveBufferSize() throws SocketException {
return opts().getReceiveBufferSize();
}
public void setKeepAlive(boolean on) throws SocketException {
opts().setKeepAlive(on);
}
public boolean getKeepAlive() throws SocketException {
return opts().getKeepAlive();
}
public void setTrafficClass(int tc) throws SocketException {
opts().setTrafficClass(tc);
trafficClass = tc;
}
public int getTrafficClass() throws SocketException {
int tc = opts().getTrafficClass();
if (tc < 0) {
tc = trafficClass;
}
return tc;
}
public void setReuseAddress(boolean on) throws SocketException {
opts().setReuseAddress(on);
}
public boolean getReuseAddress() throws SocketException {
return opts().getReuseAddress();
}
public void close() throws IOException {
try {
sc.close();
} catch (Exception x) {
Net.translateToSocketException(x);
}
}
public void shutdownInput() throws IOException {
try {
sc.shutdownInput();
} catch (Exception x) {
Net.translateException(x);
}
}
public void shutdownOutput() throws IOException {
try {
sc.shutdownOutput();
} catch (Exception x) {
Net.translateException(x);
}
}
public String toString() {
if (sc.isConnected())
return "Socket[addr=" + getInetAddress() +
",port=" + getPort() +
",localport=" + getLocalPort() + "]";
return "Socket[unconnected]";
}
public boolean isConnected() {
return sc.isConnected();
}
public boolean isBound() {
return sc.isBound();
}
public boolean isClosed() {
return !sc.isOpen();
}
public boolean isInputShutdown() {
return !sc.isInputOpen();
}
public boolean isOutputShutdown() {
return !sc.isOutputOpen();
}
}