J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | package java.net; |
| 26 | |
| 27 | import java.io.*; |
| 28 | import java.security.PrivilegedAction; |
| 29 | |
| 30 | /* |
| 31 | * This class PlainSocketImpl simply delegates to the appropriate real |
| 32 | * SocketImpl. We do this because PlainSocketImpl is already extended |
| 33 | * by SocksSocketImpl. |
| 34 | * <p> |
| 35 | * There are two possibilities for the real SocketImpl, |
| 36 | * TwoStacksPlainSocketImpl or DualStackPlainSocketImpl. We use |
| 37 | * DualStackPlainSocketImpl on systems that have a dual stack |
| 38 | * TCP implementation. Otherwise we create an instance of |
| 39 | * TwoStacksPlainSocketImpl and delegate to it. |
| 40 | * |
| 41 | * @author Chris Hegarty |
| 42 | */ |
| 43 | |
| 44 | class PlainSocketImpl extends AbstractPlainSocketImpl |
| 45 | { |
| 46 | private AbstractPlainSocketImpl impl; |
| 47 | |
| 48 | /* the windows version. */ |
| 49 | private static float version; |
| 50 | |
| 51 | /* java.net.preferIPv4Stack */ |
| 52 | private static boolean preferIPv4Stack = false; |
| 53 | |
| 54 | /* If the version supports a dual stack TCP implementation */ |
| 55 | private static boolean useDualStackImpl = false; |
| 56 | |
| 57 | static { |
| 58 | java.security.AccessController.doPrivileged( new PrivilegedAction<Object>() { |
| 59 | public Object run() { |
| 60 | version = 0; |
| 61 | try { |
| 62 | version = Float.parseFloat(System.getProperties().getProperty("os.version")); |
| 63 | preferIPv4Stack = Boolean.parseBoolean( |
| 64 | System.getProperties().getProperty("java.net.preferIPv4Stack")); |
| 65 | } catch (NumberFormatException e ) { |
| 66 | assert false : e; |
| 67 | } |
| 68 | return null; // nothing to return |
| 69 | } }); |
| 70 | |
| 71 | // (version >= 6.0) implies Vista or greater. |
| 72 | if (version >= 6.0 && !preferIPv4Stack) { |
| 73 | useDualStackImpl = true; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Constructs an empty instance. |
| 79 | */ |
| 80 | PlainSocketImpl() { |
| 81 | if (useDualStackImpl) { |
| 82 | impl = new DualStackPlainSocketImpl(); |
| 83 | } else { |
| 84 | impl = new TwoStacksPlainSocketImpl(); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Constructs an instance with the given file descriptor. |
| 90 | */ |
| 91 | PlainSocketImpl(FileDescriptor fd) { |
| 92 | if (useDualStackImpl) { |
| 93 | impl = new DualStackPlainSocketImpl(fd); |
| 94 | } else { |
| 95 | impl = new TwoStacksPlainSocketImpl(fd); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | // Override methods in SocketImpl that access impl's fields. |
| 100 | |
| 101 | protected FileDescriptor getFileDescriptor() { |
| 102 | return impl.getFileDescriptor(); |
| 103 | } |
| 104 | |
| 105 | protected InetAddress getInetAddress() { |
| 106 | return impl.getInetAddress(); |
| 107 | } |
| 108 | |
| 109 | protected int getPort() { |
| 110 | return impl.getPort(); |
| 111 | } |
| 112 | |
| 113 | protected int getLocalPort() { |
| 114 | return impl.getLocalPort(); |
| 115 | } |
| 116 | |
| 117 | void setSocket(Socket soc) { |
| 118 | impl.setSocket(soc); |
| 119 | } |
| 120 | |
| 121 | Socket getSocket() { |
| 122 | return impl.getSocket(); |
| 123 | } |
| 124 | |
| 125 | void setServerSocket(ServerSocket soc) { |
| 126 | impl.setServerSocket(soc); |
| 127 | } |
| 128 | |
| 129 | ServerSocket getServerSocket() { |
| 130 | return impl.getServerSocket(); |
| 131 | } |
| 132 | |
| 133 | public String toString() { |
| 134 | return impl.toString(); |
| 135 | } |
| 136 | |
| 137 | // Override methods in AbstractPlainSocketImpl that access impl's fields. |
| 138 | |
| 139 | protected synchronized void create(boolean stream) throws IOException { |
| 140 | impl.create(stream); |
| 141 | } |
| 142 | |
| 143 | protected void connect(String host, int port) |
| 144 | throws UnknownHostException, IOException |
| 145 | { |
| 146 | impl.connect(host, port); |
| 147 | } |
| 148 | |
| 149 | protected void connect(InetAddress address, int port) throws IOException { |
| 150 | impl.connect(address, port); |
| 151 | } |
| 152 | |
| 153 | protected void connect(SocketAddress address, int timeout) throws IOException { |
| 154 | impl.connect(address, timeout); |
| 155 | } |
| 156 | |
| 157 | public void setOption(int opt, Object val) throws SocketException { |
| 158 | impl.setOption(opt, val); |
| 159 | } |
| 160 | |
| 161 | public Object getOption(int opt) throws SocketException { |
| 162 | return impl.getOption(opt); |
| 163 | } |
| 164 | |
| 165 | synchronized void doConnect(InetAddress address, int port, int timeout) throws IOException { |
| 166 | impl.doConnect(address, port, timeout); |
| 167 | } |
| 168 | |
| 169 | protected synchronized void bind(InetAddress address, int lport) |
| 170 | throws IOException |
| 171 | { |
| 172 | impl.bind(address, lport); |
| 173 | } |
| 174 | |
| 175 | protected synchronized void accept(SocketImpl s) throws IOException { |
| 176 | // pass in the real impl not the wrapper. |
| 177 | ((PlainSocketImpl)s).impl.address = new InetAddress(); |
| 178 | ((PlainSocketImpl)s).impl.fd = new FileDescriptor(); |
| 179 | impl.accept(((PlainSocketImpl)s).impl); |
| 180 | } |
| 181 | |
| 182 | void setFileDescriptor(FileDescriptor fd) { |
| 183 | impl.setFileDescriptor(fd); |
| 184 | } |
| 185 | |
| 186 | void setAddress(InetAddress address) { |
| 187 | impl.setAddress(address); |
| 188 | } |
| 189 | |
| 190 | void setPort(int port) { |
| 191 | impl.setPort(port); |
| 192 | } |
| 193 | |
| 194 | void setLocalPort(int localPort) { |
| 195 | impl.setLocalPort(localPort); |
| 196 | } |
| 197 | |
| 198 | protected synchronized InputStream getInputStream() throws IOException { |
| 199 | return impl.getInputStream(); |
| 200 | } |
| 201 | |
| 202 | void setInputStream(SocketInputStream in) { |
| 203 | impl.setInputStream(in); |
| 204 | } |
| 205 | |
| 206 | protected synchronized OutputStream getOutputStream() throws IOException { |
| 207 | return impl.getOutputStream(); |
| 208 | } |
| 209 | |
| 210 | protected void close() throws IOException { |
| 211 | impl.close(); |
| 212 | } |
| 213 | |
| 214 | void reset() throws IOException { |
| 215 | impl.reset(); |
| 216 | } |
| 217 | |
| 218 | protected void shutdownInput() throws IOException { |
| 219 | impl.shutdownInput(); |
| 220 | } |
| 221 | |
| 222 | protected void shutdownOutput() throws IOException { |
| 223 | impl.shutdownOutput(); |
| 224 | } |
| 225 | |
| 226 | protected void sendUrgentData(int data) throws IOException { |
| 227 | impl.sendUrgentData(data); |
| 228 | } |
| 229 | |
| 230 | FileDescriptor acquireFD() { |
| 231 | return impl.acquireFD(); |
| 232 | } |
| 233 | |
| 234 | void releaseFD() { |
| 235 | impl.releaseFD(); |
| 236 | } |
| 237 | |
| 238 | public boolean isConnectionReset() { |
| 239 | return impl.isConnectionReset(); |
| 240 | } |
| 241 | |
| 242 | public boolean isConnectionResetPending() { |
| 243 | return impl.isConnectionResetPending(); |
| 244 | } |
| 245 | |
| 246 | public void setConnectionReset() { |
| 247 | impl.setConnectionReset(); |
| 248 | } |
| 249 | |
| 250 | public void setConnectionResetPending() { |
| 251 | impl.setConnectionResetPending(); |
| 252 | } |
| 253 | |
| 254 | public boolean isClosedOrPending() { |
| 255 | return impl.isClosedOrPending(); |
| 256 | } |
| 257 | |
| 258 | public int getTimeout() { |
| 259 | return impl.getTimeout(); |
| 260 | } |
| 261 | |
| 262 | // Override methods in AbstractPlainSocketImpl that need to be implemented. |
| 263 | |
| 264 | void socketCreate(boolean isServer) throws IOException { |
| 265 | impl.socketCreate(isServer); |
| 266 | } |
| 267 | |
| 268 | void socketConnect(InetAddress address, int port, int timeout) |
| 269 | throws IOException { |
| 270 | impl.socketConnect(address, port, timeout); |
| 271 | } |
| 272 | |
| 273 | void socketBind(InetAddress address, int port) |
| 274 | throws IOException { |
| 275 | impl.socketBind(address, port); |
| 276 | } |
| 277 | |
| 278 | void socketListen(int count) throws IOException { |
| 279 | impl.socketListen(count); |
| 280 | } |
| 281 | |
| 282 | void socketAccept(SocketImpl s) throws IOException { |
| 283 | impl.socketAccept(s); |
| 284 | } |
| 285 | |
| 286 | int socketAvailable() throws IOException { |
| 287 | return impl.socketAvailable(); |
| 288 | } |
| 289 | |
| 290 | void socketClose0(boolean useDeferredClose) throws IOException { |
| 291 | impl.socketClose0(useDeferredClose); |
| 292 | } |
| 293 | |
| 294 | void socketShutdown(int howto) throws IOException { |
| 295 | impl.socketShutdown(howto); |
| 296 | } |
| 297 | |
| 298 | void socketSetOption(int cmd, boolean on, Object value) |
| 299 | throws SocketException { |
| 300 | socketSetOption(cmd, on, value); |
| 301 | } |
| 302 | |
| 303 | int socketGetOption(int opt, Object iaContainerObj) throws SocketException { |
| 304 | return impl.socketGetOption(opt, iaContainerObj); |
| 305 | } |
| 306 | |
| 307 | int socketGetOption1(int opt, Object iaContainerObj, FileDescriptor fd) |
| 308 | throws SocketException { |
| 309 | return impl.socketGetOption1(opt, iaContainerObj, fd); |
| 310 | } |
| 311 | |
| 312 | void socketSendUrgentData(int data) throws IOException { |
| 313 | impl.socketSendUrgentData(data); |
| 314 | } |
| 315 | } |