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| 1 | /* | ||
| 2 | * Copyright (c) 2000, 2010, Oracle and/or its affiliates. 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.nio.ch; | ||
| 27 | |||
| 28 | import java.io.*; | ||
| 29 | import java.lang.ref.*; | ||
| 30 | import java.net.*; | ||
| 31 | import java.nio.*; | ||
| 32 | import java.nio.channels.*; | ||
| 33 | import java.security.AccessController; | ||
| 34 | import java.security.PrivilegedExceptionAction; | ||
| 35 | import java.util.*; | ||
| 36 | |||
| 37 | |||
| 38 | // Make a socket channel look like a socket. | ||
| 39 | // | ||
| 40 | // The only aspects of java.net.Socket-hood that we don't attempt to emulate | ||
| 41 | // here are the interrupted-I/O exceptions (which our Solaris implementations | ||
| 42 | // attempt to support) and the sending of urgent data. Otherwise an adapted | ||
| 43 | // socket should look enough like a real java.net.Socket to fool most of the | ||
| 44 | // developers most of the time, right down to the exception message strings. | ||
| 45 | // | ||
| 46 | // The methods in this class are defined in exactly the same order as in | ||
| 47 | // java.net.Socket so as to simplify tracking future changes to that class. | ||
| 48 | // | ||
| 49 | |||
| 50 | public class SocketAdaptor | ||
| 51 | extends Socket | ||
| 52 | { | ||
| 53 | |||
| 54 | // The channel being adapted | ||
| 55 | private final SocketChannelImpl sc; | ||
| 56 | |||
| 57 | // Timeout "option" value for reads | ||
| 58 | private volatile int timeout = 0; | ||
| 59 | |||
| 60 | // ## super will create a useless impl | ||
| 61 | private SocketAdaptor(SocketChannelImpl sc) { | ||
| 62 | this.sc = sc; | ||
| 63 | } | ||
| 64 | |||
| 65 | public static Socket create(SocketChannelImpl sc) { | ||
| 66 | return new SocketAdaptor(sc); | ||
| 67 | } | ||
| 68 | |||
| 69 | public SocketChannel getChannel() { | ||
| 70 | return sc; | ||
| 71 | } | ||
| 72 | |||
| 73 | // Override this method just to protect against changes in the superclass | ||
| 74 | // | ||
| 75 | public void connect(SocketAddress remote) throws IOException { | ||
| 76 | connect(remote, 0); | ||
| 77 | } | ||
| 78 | |||
| 79 | public void connect(SocketAddress remote, int timeout) throws IOException { | ||
| 80 | if (remote == null) | ||
| 81 | throw new IllegalArgumentException("connect: The address can't be null"); | ||
| 82 | if (timeout < 0) | ||
| 83 | throw new IllegalArgumentException("connect: timeout can't be negative"); | ||
| 84 | |||
| 85 | synchronized (sc.blockingLock()) { | ||
| 86 | if (!sc.isBlocking()) | ||
| 87 | throw new IllegalBlockingModeException(); | ||
| 88 | |||
| 89 | try { | ||
| 90 | |||
| 91 | if (timeout == 0) { | ||
| 92 | sc.connect(remote); | ||
| 93 | return; | ||
| 94 | } | ||
| 95 | |||
| 96 | // Implement timeout with a selector | ||
| 97 | SelectionKey sk = null; | ||
| 98 | Selector sel = null; | ||
| 99 | sc.configureBlocking(false); | ||
| 100 | try { | ||
| 101 | if (sc.connect(remote)) | ||
| 102 | return; | ||
| 103 | sel = Util.getTemporarySelector(sc); | ||
| 104 | sk = sc.register(sel, SelectionKey.OP_CONNECT); | ||
| 105 | long to = timeout; | ||
| 106 | for (;;) { | ||
| 107 | if (!sc.isOpen()) | ||
| 108 | throw new ClosedChannelException(); | ||
| 109 | long st = System.currentTimeMillis(); | ||
| 110 | int ns = sel.select(to); | ||
| 111 | if (ns > 0 && | ||
| 112 | sk.isConnectable() && sc.finishConnect()) | ||
| 113 | break; | ||
| 114 | sel.selectedKeys().remove(sk); | ||
| 115 | to -= System.currentTimeMillis() - st; | ||
| 116 | if (to <= 0) { | ||
| 117 | try { | ||
| 118 | sc.close(); | ||
| 119 | } catch (IOException x) { } | ||
| 120 | throw new SocketTimeoutException(); | ||
| 121 | } | ||
| 122 | } | ||
| 123 | } finally { | ||
| 124 | if (sk != null) | ||
| 125 | sk.cancel(); | ||
| 126 | if (sc.isOpen()) | ||
| 127 | sc.configureBlocking(true); | ||
| 128 | if (sel != null) | ||
| 129 | Util.releaseTemporarySelector(sel); | ||
| 130 | } | ||
| 131 | |||
| 132 | } catch (Exception x) { | ||
| 133 | Net.translateException(x, true); | ||
| 134 | } | ||
| 135 | } | ||
| 136 | |||
| 137 | } | ||
| 138 | |||
| 139 | public void bind(SocketAddress local) throws IOException { | ||
| 140 | try { | ||
| 141 | sc.bind(local); | ||
| 142 | } catch (Exception x) { | ||
| 143 | Net.translateException(x); | ||
| 144 | } | ||
| 145 | } | ||
| 146 | |||
| 147 | public InetAddress getInetAddress() { | ||
| 148 | SocketAddress remote = sc.remoteAddress(); | ||
| 149 | if (remote == null) { | ||
| 150 | return null; | ||
| 151 | } else { | ||
| 152 | return ((InetSocketAddress)remote).getAddress(); | ||
| 153 | } | ||
| 154 | } | ||
| 155 | |||
| 156 | public InetAddress getLocalAddress() { | ||
| 157 | if (sc.isOpen()) { | ||
| 158 | SocketAddress local = sc.localAddress(); | ||
| 159 | if (local != null) | ||
| 160 | return ((InetSocketAddress)local).getAddress(); | ||
| 161 | } | ||
| 162 | return new InetSocketAddress(0).getAddress(); | ||
| 163 | } | ||
| 164 | |||
| 165 | public int getPort() { | ||
| 166 | SocketAddress remote = sc.remoteAddress(); | ||
| 167 | if (remote == null) { | ||
| 168 | return 0; | ||
| 169 | } else { | ||
| 170 | return ((InetSocketAddress)remote).getPort(); | ||
| 171 | } | ||
| 172 | } | ||
| 173 | |||
| 174 | public int getLocalPort() { | ||
| 175 | SocketAddress local = sc.localAddress(); | ||
| 176 | if (local == null) { | ||
| 177 | return -1; | ||
| 178 | } else { | ||
| 179 | return ((InetSocketAddress)local).getPort(); | ||
| 180 | } | ||
| 181 | } | ||
| 182 | |||
| 183 | private class SocketInputStream | ||
| 184 | extends ChannelInputStream | ||
| 185 | { | ||
| 186 | private SocketInputStream() { | ||
| 187 | super(sc); | ||
| 188 | } | ||
| 189 | |||
| 190 | protected int read(ByteBuffer bb) | ||
| 191 | throws IOException | ||
| 192 | { | ||
| 193 | synchronized (sc.blockingLock()) { | ||
| 194 | if (!sc.isBlocking()) | ||
| 195 | throw new IllegalBlockingModeException(); | ||
| 196 | if (timeout == 0) | ||
| 197 | return sc.read(bb); | ||
| 198 | |||
| 199 | // Implement timeout with a selector | ||
| 200 | SelectionKey sk = null; | ||
| 201 | Selector sel = null; | ||
| 202 | sc.configureBlocking(false); | ||
| 203 | try { | ||
| 204 | int n; | ||
| 205 | if ((n = sc.read(bb)) != 0) | ||
| 206 | return n; | ||
| 207 | sel = Util.getTemporarySelector(sc); | ||
| 208 | sk = sc.register(sel, SelectionKey.OP_READ); | ||
| 209 | long to = timeout; | ||
| 210 | for (;;) { | ||
| 211 | if (!sc.isOpen()) | ||
| 212 | throw new ClosedChannelException(); | ||
| 213 | long st = System.currentTimeMillis(); | ||
| 214 | int ns = sel.select(to); | ||
| 215 | if (ns > 0 && sk.isReadable()) { | ||
| 216 | if ((n = sc.read(bb)) != 0) | ||
| 217 | return n; | ||
| 218 | } | ||
| 219 | sel.selectedKeys().remove(sk); | ||
| 220 | to -= System.currentTimeMillis() - st; | ||
| 221 | if (to <= 0) | ||
| 222 | throw new SocketTimeoutException(); | ||
| 223 | } | ||
| 224 | } finally { | ||
| 225 | if (sk != null) | ||
| 226 | sk.cancel(); | ||
| 227 | if (sc.isOpen()) | ||
| 228 | sc.configureBlocking(true); | ||
| 229 | if (sel != null) | ||
| 230 | Util.releaseTemporarySelector(sel); | ||
| 231 | } | ||
| 232 | |||
| 233 | } | ||
| 234 | } | ||
| 235 | } | ||
| 236 | |||
| 237 | private InputStream socketInputStream = null; | ||
| 238 | |||
| 239 | public InputStream getInputStream() throws IOException { | ||
| 240 | if (!sc.isOpen()) | ||
| 241 | throw new SocketException("Socket is closed"); | ||
| 242 | if (!sc.isConnected()) | ||
| 243 | throw new SocketException("Socket is not connected"); | ||
| 244 | if (!sc.isInputOpen()) | ||
| 245 | throw new SocketException("Socket input is shutdown"); | ||
| 246 | if (socketInputStream == null) { | ||
| 247 | try { | ||
| 248 | socketInputStream = AccessController.doPrivileged( | ||
| 249 | new PrivilegedExceptionAction<InputStream>() { | ||
| 250 | public InputStream run() throws IOException { | ||
| 251 | return new SocketInputStream(); | ||
| 252 | } | ||
| 253 | }); | ||
| 254 | } catch (java.security.PrivilegedActionException e) { | ||
| 255 | throw (IOException)e.getException(); | ||
| 256 | } | ||
| 257 | } | ||
| 258 | return socketInputStream; | ||
| 259 | } | ||
| 260 | |||
| 261 | public OutputStream getOutputStream() throws IOException { | ||
| 262 | if (!sc.isOpen()) | ||
| 263 | throw new SocketException("Socket is closed"); | ||
| 264 | if (!sc.isConnected()) | ||
| 265 | throw new SocketException("Socket is not connected"); | ||
| 266 | if (!sc.isOutputOpen()) | ||
| 267 | throw new SocketException("Socket output is shutdown"); | ||
| 268 | OutputStream os = null; | ||
| 269 | try { | ||
| 270 | os = AccessController.doPrivileged( | ||
| 271 | new PrivilegedExceptionAction<OutputStream>() { | ||
| 272 | public OutputStream run() throws IOException { | ||
| 273 | return Channels.newOutputStream(sc); | ||
| 274 | } | ||
| 275 | }); | ||
| 276 | } catch (java.security.PrivilegedActionException e) { | ||
| 277 | throw (IOException)e.getException(); | ||
| 278 | } | ||
| 279 | return os; | ||
| 280 | } | ||
| 281 | |||
| 282 | private void setBooleanOption(SocketOption<Boolean> name, boolean value) | ||
| 283 | throws SocketException | ||
| 284 | { | ||
| 285 | try { | ||
| 286 | sc.setOption(name, value); | ||
| 287 | } catch (IOException x) { | ||
| 288 | Net.translateToSocketException(x); | ||
| 289 | } | ||
| 290 | } | ||
| 291 | |||
| 292 | private void setIntOption(SocketOption<Integer> name, int value) | ||
| 293 | throws SocketException | ||
| 294 | { | ||
| 295 | try { | ||
| 296 | sc.setOption(name, value); | ||
| 297 | } catch (IOException x) { | ||
| 298 | Net.translateToSocketException(x); | ||
| 299 | } | ||
| 300 | } | ||
| 301 | |||
| 302 | private boolean getBooleanOption(SocketOption<Boolean> name) throws SocketException { | ||
| 303 | try { | ||
| 304 | return sc.getOption(name).booleanValue(); | ||
| 305 | } catch (IOException x) { | ||
| 306 | Net.translateToSocketException(x); | ||
| 307 | return false; // keep compiler happy | ||
| 308 | } | ||
| 309 | } | ||
| 310 | |||
| 311 | private int getIntOption(SocketOption<Integer> name) throws SocketException { | ||
| 312 | try { | ||
| 313 | return sc.getOption(name).intValue(); | ||
| 314 | } catch (IOException x) { | ||
| 315 | Net.translateToSocketException(x); | ||
| 316 | return -1; // keep compiler happy | ||
| 317 | } | ||
| 318 | } | ||
| 319 | |||
| 320 | public void setTcpNoDelay(boolean on) throws SocketException { | ||
| 321 | setBooleanOption(StandardSocketOptions.TCP_NODELAY, on); | ||
| 322 | } | ||
| 323 | |||
| 324 | public boolean getTcpNoDelay() throws SocketException { | ||
| 325 | return getBooleanOption(StandardSocketOptions.TCP_NODELAY); | ||
| 326 | } | ||
| 327 | |||
| 328 | public void setSoLinger(boolean on, int linger) throws SocketException { | ||
| 329 | if (!on) | ||
| 330 | linger = -1; | ||
| 331 | setIntOption(StandardSocketOptions.SO_LINGER, linger); | ||
| 332 | } | ||
| 333 | |||
| 334 | public int getSoLinger() throws SocketException { | ||
| 335 | return getIntOption(StandardSocketOptions.SO_LINGER); | ||
| 336 | } | ||
| 337 | |||
| 338 | public void sendUrgentData(int data) throws IOException { | ||
| 339 | synchronized (sc.blockingLock()) { | ||
| 340 | if (!sc.isBlocking()) | ||
| 341 | throw new IllegalBlockingModeException(); | ||
| 342 | int n = sc.sendOutOfBandData((byte)data); | ||
| 343 | assert n == 1; | ||
| 344 | } | ||
| 345 | } | ||
| 346 | |||
| 347 | public void setOOBInline(boolean on) throws SocketException { | ||
| 348 | setBooleanOption(ExtendedSocketOption.SO_OOBINLINE, on); | ||
| 349 | } | ||
| 350 | |||
| 351 | public boolean getOOBInline() throws SocketException { | ||
| 352 | return getBooleanOption(ExtendedSocketOption.SO_OOBINLINE); | ||
| 353 | } | ||
| 354 | |||
| 355 | public void setSoTimeout(int timeout) throws SocketException { | ||
| 356 | if (timeout < 0) | ||
| 357 | throw new IllegalArgumentException("timeout can't be negative"); | ||
| 358 | this.timeout = timeout; | ||
| 359 | } | ||
| 360 | |||
| 361 | public int getSoTimeout() throws SocketException { | ||
| 362 | return timeout; | ||
| 363 | } | ||
| 364 | |||
| 365 | public void setSendBufferSize(int size) throws SocketException { | ||
| 366 | // size 0 valid for SocketChannel, invalid for Socket | ||
| 367 | if (size <= 0) | ||
| 368 | throw new IllegalArgumentException("Invalid send size"); | ||
| 369 | setIntOption(StandardSocketOptions.SO_SNDBUF, size); | ||
| 370 | } | ||
| 371 | |||
| 372 | public int getSendBufferSize() throws SocketException { | ||
| 373 | return getIntOption(StandardSocketOptions.SO_SNDBUF); | ||
| 374 | } | ||
| 375 | |||
| 376 | public void setReceiveBufferSize(int size) throws SocketException { | ||
| 377 | // size 0 valid for SocketChannel, invalid for Socket | ||
| 378 | if (size <= 0) | ||
| 379 | throw new IllegalArgumentException("Invalid receive size"); | ||
| 380 | setIntOption(StandardSocketOptions.SO_RCVBUF, size); | ||
| 381 | } | ||
| 382 | |||
| 383 | public int getReceiveBufferSize() throws SocketException { | ||
| 384 | return getIntOption(StandardSocketOptions.SO_RCVBUF); | ||
| 385 | } | ||
| 386 | |||
| 387 | public void setKeepAlive(boolean on) throws SocketException { | ||
| 388 | setBooleanOption(StandardSocketOptions.SO_KEEPALIVE, on); | ||
| 389 | } | ||
| 390 | |||
| 391 | public boolean getKeepAlive() throws SocketException { | ||
| 392 | return getBooleanOption(StandardSocketOptions.SO_KEEPALIVE); | ||
| 393 | } | ||
| 394 | |||
| 395 | public void setTrafficClass(int tc) throws SocketException { | ||
| 396 | setIntOption(StandardSocketOptions.IP_TOS, tc); | ||
| 397 | } | ||
| 398 | |||
| 399 | public int getTrafficClass() throws SocketException { | ||
| 400 | return getIntOption(StandardSocketOptions.IP_TOS); | ||
| 401 | } | ||
| 402 | |||
| 403 | public void setReuseAddress(boolean on) throws SocketException { | ||
| 404 | setBooleanOption(StandardSocketOptions.SO_REUSEADDR, on); | ||
| 405 | } | ||
| 406 | |||
| 407 | public boolean getReuseAddress() throws SocketException { | ||
| 408 | return getBooleanOption(StandardSocketOptions.SO_REUSEADDR); | ||
| 409 | } | ||
| 410 | |||
| 411 | public void close() throws IOException { | ||
| 412 | sc.close(); | ||
| 413 | } | ||
| 414 | |||
| 415 | public void shutdownInput() throws IOException { | ||
| 416 | try { | ||
| 417 | sc.shutdownInput(); | ||
| 418 | } catch (Exception x) { | ||
| 419 | Net.translateException(x); | ||
| 420 | } | ||
| 421 | } | ||
| 422 | |||
| 423 | public void shutdownOutput() throws IOException { | ||
| 424 | try { | ||
| 425 | sc.shutdownOutput(); | ||
| 426 | } catch (Exception x) { | ||
| 427 | Net.translateException(x); | ||
| 428 | } | ||
| 429 | } | ||
| 430 | |||
| 431 | public String toString() { | ||
| 432 | if (sc.isConnected()) | ||
| 433 | return "Socket[addr=" + getInetAddress() + | ||
| 434 | ",port=" + getPort() + | ||
| 435 | ",localport=" + getLocalPort() + "]"; | ||
| 436 | return "Socket[unconnected]"; | ||
| 437 | } | ||
| 438 | |||
| 439 | public boolean isConnected() { | ||
| 440 | return sc.isConnected(); | ||
| 441 | } | ||
| 442 | |||
| 443 | public boolean isBound() { | ||
| 444 | return sc.localAddress() != null; | ||
| 445 | } | ||
| 446 | |||
| 447 | public boolean isClosed() { | ||
| 448 | return !sc.isOpen(); | ||
| 449 | } | ||
| 450 | |||
| 451 | public boolean isInputShutdown() { | ||
| 452 | return !sc.isInputOpen(); | ||
| 453 | } | ||
| 454 | |||
| 455 | public boolean isOutputShutdown() { | ||
| 456 | return !sc.isOutputOpen(); | ||
| 457 | } | ||
| 458 | |||
| 459 | } | ||