| /* |
| * Copyright (c) 2007, 2016, 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 java.net; |
| |
| import java.io.*; |
| import java.security.PrivilegedAction; |
| |
| /* |
| * This class PlainSocketImpl simply delegates to the appropriate real |
| * SocketImpl. We do this because PlainSocketImpl is already extended |
| * by SocksSocketImpl. |
| * <p> |
| * There are two possibilities for the real SocketImpl, |
| * TwoStacksPlainSocketImpl or DualStackPlainSocketImpl. We use |
| * DualStackPlainSocketImpl on systems that have a dual stack |
| * TCP implementation. Otherwise we create an instance of |
| * TwoStacksPlainSocketImpl and delegate to it. |
| * |
| * @author Chris Hegarty |
| */ |
| |
| class PlainSocketImpl extends AbstractPlainSocketImpl |
| { |
| private AbstractPlainSocketImpl impl; |
| |
| /* the windows version. */ |
| private static float version; |
| |
| /* java.net.preferIPv4Stack */ |
| private static boolean preferIPv4Stack = false; |
| |
| /* If the version supports a dual stack TCP implementation */ |
| private static boolean useDualStackImpl = false; |
| |
| /* sun.net.useExclusiveBind */ |
| private static String exclBindProp; |
| |
| /* True if exclusive binding is on for Windows */ |
| private static boolean exclusiveBind = true; |
| |
| static { |
| java.security.AccessController.doPrivileged( new PrivilegedAction<Object>() { |
| public Object run() { |
| version = 0; |
| try { |
| version = Float.parseFloat(System.getProperties().getProperty("os.version")); |
| preferIPv4Stack = Boolean.parseBoolean( |
| System.getProperties().getProperty("java.net.preferIPv4Stack")); |
| exclBindProp = System.getProperty("sun.net.useExclusiveBind"); |
| } catch (NumberFormatException e ) { |
| assert false : e; |
| } |
| return null; // nothing to return |
| } }); |
| |
| // (version >= 6.0) implies Vista or greater. |
| if (version >= 6.0 && !preferIPv4Stack) { |
| useDualStackImpl = true; |
| } |
| |
| if (exclBindProp != null) { |
| // sun.net.useExclusiveBind is true |
| exclusiveBind = exclBindProp.length() == 0 ? true |
| : Boolean.parseBoolean(exclBindProp); |
| } else if (version < 6.0) { |
| exclusiveBind = false; |
| } |
| } |
| |
| /** |
| * Constructs an empty instance. |
| */ |
| PlainSocketImpl() { |
| if (useDualStackImpl) { |
| impl = new DualStackPlainSocketImpl(exclusiveBind); |
| } else { |
| impl = new TwoStacksPlainSocketImpl(exclusiveBind); |
| } |
| } |
| |
| /** |
| * Constructs an instance with the given file descriptor. |
| */ |
| PlainSocketImpl(FileDescriptor fd) { |
| if (useDualStackImpl) { |
| impl = new DualStackPlainSocketImpl(fd, exclusiveBind); |
| } else { |
| impl = new TwoStacksPlainSocketImpl(fd, exclusiveBind); |
| } |
| } |
| |
| // Override methods in SocketImpl that access impl's fields. |
| |
| protected FileDescriptor getFileDescriptor() { |
| return impl.getFileDescriptor(); |
| } |
| |
| protected InetAddress getInetAddress() { |
| return impl.getInetAddress(); |
| } |
| |
| protected int getPort() { |
| return impl.getPort(); |
| } |
| |
| protected int getLocalPort() { |
| return impl.getLocalPort(); |
| } |
| |
| void setSocket(Socket soc) { |
| impl.setSocket(soc); |
| } |
| |
| Socket getSocket() { |
| return impl.getSocket(); |
| } |
| |
| void setServerSocket(ServerSocket soc) { |
| impl.setServerSocket(soc); |
| } |
| |
| ServerSocket getServerSocket() { |
| return impl.getServerSocket(); |
| } |
| |
| public String toString() { |
| return impl.toString(); |
| } |
| |
| // Override methods in AbstractPlainSocketImpl that access impl's fields. |
| |
| protected synchronized void create(boolean stream) throws IOException { |
| impl.create(stream); |
| |
| // set fd to delegate's fd to be compatible with older releases |
| this.fd = impl.fd; |
| } |
| |
| protected void connect(String host, int port) |
| throws UnknownHostException, IOException |
| { |
| impl.connect(host, port); |
| } |
| |
| protected void connect(InetAddress address, int port) throws IOException { |
| impl.connect(address, port); |
| } |
| |
| protected void connect(SocketAddress address, int timeout) throws IOException { |
| impl.connect(address, timeout); |
| } |
| |
| public void setOption(int opt, Object val) throws SocketException { |
| if (opt == SocketOptions.SO_REUSEPORT) { |
| // SO_REUSEPORT is not supported on Windows. |
| throw new UnsupportedOperationException("unsupported option"); |
| } |
| impl.setOption(opt, val); |
| } |
| |
| public Object getOption(int opt) throws SocketException { |
| if (opt == SocketOptions.SO_REUSEPORT) { |
| // SO_REUSEPORT is not supported on Windows. |
| throw new UnsupportedOperationException("unsupported option"); |
| } |
| return impl.getOption(opt); |
| } |
| |
| synchronized void doConnect(InetAddress address, int port, int timeout) throws IOException { |
| impl.doConnect(address, port, timeout); |
| } |
| |
| protected synchronized void bind(InetAddress address, int lport) |
| throws IOException |
| { |
| impl.bind(address, lport); |
| } |
| |
| protected synchronized void accept(SocketImpl s) throws IOException { |
| if (s instanceof PlainSocketImpl) { |
| // pass in the real impl not the wrapper. |
| SocketImpl delegate = ((PlainSocketImpl)s).impl; |
| delegate.address = new InetAddress(); |
| delegate.fd = new FileDescriptor(); |
| impl.accept(delegate); |
| // set fd to delegate's fd to be compatible with older releases |
| s.fd = delegate.fd; |
| } else { |
| impl.accept(s); |
| } |
| } |
| |
| void setFileDescriptor(FileDescriptor fd) { |
| impl.setFileDescriptor(fd); |
| } |
| |
| void setAddress(InetAddress address) { |
| impl.setAddress(address); |
| } |
| |
| void setPort(int port) { |
| impl.setPort(port); |
| } |
| |
| void setLocalPort(int localPort) { |
| impl.setLocalPort(localPort); |
| } |
| |
| protected synchronized InputStream getInputStream() throws IOException { |
| return impl.getInputStream(); |
| } |
| |
| void setInputStream(SocketInputStream in) { |
| impl.setInputStream(in); |
| } |
| |
| protected synchronized OutputStream getOutputStream() throws IOException { |
| return impl.getOutputStream(); |
| } |
| |
| protected void close() throws IOException { |
| try { |
| impl.close(); |
| } finally { |
| // set fd to delegate's fd to be compatible with older releases |
| this.fd = null; |
| } |
| } |
| |
| void reset() throws IOException { |
| try { |
| impl.reset(); |
| } finally { |
| // set fd to delegate's fd to be compatible with older releases |
| this.fd = null; |
| } |
| } |
| |
| protected void shutdownInput() throws IOException { |
| impl.shutdownInput(); |
| } |
| |
| protected void shutdownOutput() throws IOException { |
| impl.shutdownOutput(); |
| } |
| |
| protected void sendUrgentData(int data) throws IOException { |
| impl.sendUrgentData(data); |
| } |
| |
| FileDescriptor acquireFD() { |
| return impl.acquireFD(); |
| } |
| |
| void releaseFD() { |
| impl.releaseFD(); |
| } |
| |
| public boolean isConnectionReset() { |
| return impl.isConnectionReset(); |
| } |
| |
| public boolean isConnectionResetPending() { |
| return impl.isConnectionResetPending(); |
| } |
| |
| public void setConnectionReset() { |
| impl.setConnectionReset(); |
| } |
| |
| public void setConnectionResetPending() { |
| impl.setConnectionResetPending(); |
| } |
| |
| public boolean isClosedOrPending() { |
| return impl.isClosedOrPending(); |
| } |
| |
| public int getTimeout() { |
| return impl.getTimeout(); |
| } |
| |
| // Override methods in AbstractPlainSocketImpl that need to be implemented. |
| |
| void socketCreate(boolean isServer) throws IOException { |
| impl.socketCreate(isServer); |
| } |
| |
| void socketConnect(InetAddress address, int port, int timeout) |
| throws IOException { |
| impl.socketConnect(address, port, timeout); |
| } |
| |
| void socketBind(InetAddress address, int port) |
| throws IOException { |
| impl.socketBind(address, port); |
| } |
| |
| void socketListen(int count) throws IOException { |
| impl.socketListen(count); |
| } |
| |
| void socketAccept(SocketImpl s) throws IOException { |
| impl.socketAccept(s); |
| } |
| |
| int socketAvailable() throws IOException { |
| return impl.socketAvailable(); |
| } |
| |
| void socketClose0(boolean useDeferredClose) throws IOException { |
| impl.socketClose0(useDeferredClose); |
| } |
| |
| void socketShutdown(int howto) throws IOException { |
| impl.socketShutdown(howto); |
| } |
| |
| void socketSetOption(int cmd, boolean on, Object value) |
| throws SocketException { |
| if (cmd == SocketOptions.SO_REUSEPORT) { |
| // SO_REUSEPORT is not supported on Windows. |
| throw new UnsupportedOperationException("unsupported option"); |
| } |
| impl.socketSetOption(cmd, on, value); |
| } |
| |
| int socketGetOption(int opt, Object iaContainerObj) throws SocketException { |
| if (opt == SocketOptions.SO_REUSEPORT) { |
| // SO_REUSEPORT is not supported on Windows. |
| throw new UnsupportedOperationException("unsupported option"); |
| } |
| return impl.socketGetOption(opt, iaContainerObj); |
| } |
| |
| void socketSendUrgentData(int data) throws IOException { |
| impl.socketSendUrgentData(data); |
| } |
| |
| static boolean isReusePortAvailable() { |
| // SO_REUSEPORT is not supported on Windows. |
| return false; |
| } |
| } |