J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1995-2007 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 | |
| 26 | package java.net; |
| 27 | |
| 28 | import java.io.IOException; |
| 29 | import java.io.InputStream; |
| 30 | import java.io.OutputStream; |
| 31 | import java.io.InterruptedIOException; |
| 32 | import java.io.FileDescriptor; |
| 33 | import java.io.ByteArrayOutputStream; |
| 34 | |
| 35 | import sun.net.ConnectionResetException; |
| 36 | |
| 37 | /** |
| 38 | * Default Socket Implementation. This implementation does |
| 39 | * not implement any security checks. |
| 40 | * Note this class should <b>NOT</b> be public. |
| 41 | * |
| 42 | * @author Steven B. Byrne |
| 43 | */ |
| 44 | abstract class AbstractPlainSocketImpl extends SocketImpl |
| 45 | { |
| 46 | /* instance variable for SO_TIMEOUT */ |
| 47 | int timeout; // timeout in millisec |
| 48 | // traffic class |
| 49 | private int trafficClass; |
| 50 | |
| 51 | private boolean shut_rd = false; |
| 52 | private boolean shut_wr = false; |
| 53 | |
| 54 | private SocketInputStream socketInputStream = null; |
| 55 | |
| 56 | /* number of threads using the FileDescriptor */ |
| 57 | protected int fdUseCount = 0; |
| 58 | |
| 59 | /* lock when increment/decrementing fdUseCount */ |
| 60 | protected Object fdLock = new Object(); |
| 61 | |
| 62 | /* indicates a close is pending on the file descriptor */ |
| 63 | protected boolean closePending = false; |
| 64 | |
| 65 | /* indicates connection reset state */ |
| 66 | private int CONNECTION_NOT_RESET = 0; |
| 67 | private int CONNECTION_RESET_PENDING = 1; |
| 68 | private int CONNECTION_RESET = 2; |
| 69 | private int resetState; |
| 70 | private Object resetLock = new Object(); |
| 71 | |
| 72 | /** |
| 73 | * Load net library into runtime. |
| 74 | */ |
| 75 | static { |
| 76 | java.security.AccessController.doPrivileged( |
| 77 | new sun.security.action.LoadLibraryAction("net")); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Creates a socket with a boolean that specifies whether this |
| 82 | * is a stream socket (true) or an unconnected UDP socket (false). |
| 83 | */ |
| 84 | protected synchronized void create(boolean stream) throws IOException { |
| 85 | fd = new FileDescriptor(); |
| 86 | socketCreate(stream); |
| 87 | if (socket != null) |
| 88 | socket.setCreated(); |
| 89 | if (serverSocket != null) |
| 90 | serverSocket.setCreated(); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Creates a socket and connects it to the specified port on |
| 95 | * the specified host. |
| 96 | * @param host the specified host |
| 97 | * @param port the specified port |
| 98 | */ |
| 99 | protected void connect(String host, int port) |
| 100 | throws UnknownHostException, IOException |
| 101 | { |
| 102 | IOException pending = null; |
| 103 | try { |
| 104 | InetAddress address = InetAddress.getByName(host); |
| 105 | this.port = port; |
| 106 | this.address = address; |
| 107 | |
| 108 | try { |
| 109 | connectToAddress(address, port, timeout); |
| 110 | return; |
| 111 | } catch (IOException e) { |
| 112 | pending = e; |
| 113 | } |
| 114 | } catch (UnknownHostException e) { |
| 115 | pending = e; |
| 116 | } |
| 117 | |
| 118 | // everything failed |
| 119 | close(); |
| 120 | throw pending; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Creates a socket and connects it to the specified address on |
| 125 | * the specified port. |
| 126 | * @param address the address |
| 127 | * @param port the specified port |
| 128 | */ |
| 129 | protected void connect(InetAddress address, int port) throws IOException { |
| 130 | this.port = port; |
| 131 | this.address = address; |
| 132 | |
| 133 | try { |
| 134 | connectToAddress(address, port, timeout); |
| 135 | return; |
| 136 | } catch (IOException e) { |
| 137 | // everything failed |
| 138 | close(); |
| 139 | throw e; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Creates a socket and connects it to the specified address on |
| 145 | * the specified port. |
| 146 | * @param address the address |
| 147 | * @param timeout the timeout value in milliseconds, or zero for no timeout. |
| 148 | * @throws IOException if connection fails |
| 149 | * @throws IllegalArgumentException if address is null or is a |
| 150 | * SocketAddress subclass not supported by this socket |
| 151 | * @since 1.4 |
| 152 | */ |
| 153 | protected void connect(SocketAddress address, int timeout) throws IOException { |
| 154 | if (address == null || !(address instanceof InetSocketAddress)) |
| 155 | throw new IllegalArgumentException("unsupported address type"); |
| 156 | InetSocketAddress addr = (InetSocketAddress) address; |
| 157 | if (addr.isUnresolved()) |
| 158 | throw new UnknownHostException(addr.getHostName()); |
| 159 | this.port = addr.getPort(); |
| 160 | this.address = addr.getAddress(); |
| 161 | |
| 162 | try { |
| 163 | connectToAddress(this.address, port, timeout); |
| 164 | return; |
| 165 | } catch (IOException e) { |
| 166 | // everything failed |
| 167 | close(); |
| 168 | throw e; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | private void connectToAddress(InetAddress address, int port, int timeout) throws IOException { |
| 173 | if (address.isAnyLocalAddress()) { |
| 174 | doConnect(InetAddress.getLocalHost(), port, timeout); |
| 175 | } else { |
| 176 | doConnect(address, port, timeout); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | public void setOption(int opt, Object val) throws SocketException { |
| 181 | if (isClosedOrPending()) { |
| 182 | throw new SocketException("Socket Closed"); |
| 183 | } |
| 184 | boolean on = true; |
| 185 | switch (opt) { |
| 186 | /* check type safety b4 going native. These should never |
| 187 | * fail, since only java.Socket* has access to |
| 188 | * PlainSocketImpl.setOption(). |
| 189 | */ |
| 190 | case SO_LINGER: |
| 191 | if (val == null || (!(val instanceof Integer) && !(val instanceof Boolean))) |
| 192 | throw new SocketException("Bad parameter for option"); |
| 193 | if (val instanceof Boolean) { |
| 194 | /* true only if disabling - enabling should be Integer */ |
| 195 | on = false; |
| 196 | } |
| 197 | break; |
| 198 | case SO_TIMEOUT: |
| 199 | if (val == null || (!(val instanceof Integer))) |
| 200 | throw new SocketException("Bad parameter for SO_TIMEOUT"); |
| 201 | int tmp = ((Integer) val).intValue(); |
| 202 | if (tmp < 0) |
| 203 | throw new IllegalArgumentException("timeout < 0"); |
| 204 | timeout = tmp; |
| 205 | break; |
| 206 | case IP_TOS: |
| 207 | if (val == null || !(val instanceof Integer)) { |
| 208 | throw new SocketException("bad argument for IP_TOS"); |
| 209 | } |
| 210 | trafficClass = ((Integer)val).intValue(); |
| 211 | break; |
| 212 | case SO_BINDADDR: |
| 213 | throw new SocketException("Cannot re-bind socket"); |
| 214 | case TCP_NODELAY: |
| 215 | if (val == null || !(val instanceof Boolean)) |
| 216 | throw new SocketException("bad parameter for TCP_NODELAY"); |
| 217 | on = ((Boolean)val).booleanValue(); |
| 218 | break; |
| 219 | case SO_SNDBUF: |
| 220 | case SO_RCVBUF: |
| 221 | if (val == null || !(val instanceof Integer) || |
| 222 | !(((Integer)val).intValue() > 0)) { |
| 223 | throw new SocketException("bad parameter for SO_SNDBUF " + |
| 224 | "or SO_RCVBUF"); |
| 225 | } |
| 226 | break; |
| 227 | case SO_KEEPALIVE: |
| 228 | if (val == null || !(val instanceof Boolean)) |
| 229 | throw new SocketException("bad parameter for SO_KEEPALIVE"); |
| 230 | on = ((Boolean)val).booleanValue(); |
| 231 | break; |
| 232 | case SO_OOBINLINE: |
| 233 | if (val == null || !(val instanceof Boolean)) |
| 234 | throw new SocketException("bad parameter for SO_OOBINLINE"); |
| 235 | on = ((Boolean)val).booleanValue(); |
| 236 | break; |
| 237 | case SO_REUSEADDR: |
| 238 | if (val == null || !(val instanceof Boolean)) |
| 239 | throw new SocketException("bad parameter for SO_REUSEADDR"); |
| 240 | on = ((Boolean)val).booleanValue(); |
| 241 | break; |
| 242 | default: |
| 243 | throw new SocketException("unrecognized TCP option: " + opt); |
| 244 | } |
| 245 | socketSetOption(opt, on, val); |
| 246 | } |
| 247 | public Object getOption(int opt) throws SocketException { |
| 248 | if (isClosedOrPending()) { |
| 249 | throw new SocketException("Socket Closed"); |
| 250 | } |
| 251 | if (opt == SO_TIMEOUT) { |
| 252 | return new Integer(timeout); |
| 253 | } |
| 254 | int ret = 0; |
| 255 | /* |
| 256 | * The native socketGetOption() knows about 3 options. |
| 257 | * The 32 bit value it returns will be interpreted according |
| 258 | * to what we're asking. A return of -1 means it understands |
| 259 | * the option but its turned off. It will raise a SocketException |
| 260 | * if "opt" isn't one it understands. |
| 261 | */ |
| 262 | |
| 263 | switch (opt) { |
| 264 | case TCP_NODELAY: |
| 265 | ret = socketGetOption(opt, null); |
| 266 | return Boolean.valueOf(ret != -1); |
| 267 | case SO_OOBINLINE: |
| 268 | ret = socketGetOption(opt, null); |
| 269 | return Boolean.valueOf(ret != -1); |
| 270 | case SO_LINGER: |
| 271 | ret = socketGetOption(opt, null); |
| 272 | return (ret == -1) ? Boolean.FALSE: (Object)(new Integer(ret)); |
| 273 | case SO_REUSEADDR: |
| 274 | ret = socketGetOption(opt, null); |
| 275 | return Boolean.valueOf(ret != -1); |
| 276 | case SO_BINDADDR: |
| 277 | InetAddressContainer in = new InetAddressContainer(); |
| 278 | ret = socketGetOption(opt, in); |
| 279 | return in.addr; |
| 280 | case SO_SNDBUF: |
| 281 | case SO_RCVBUF: |
| 282 | ret = socketGetOption(opt, null); |
| 283 | return new Integer(ret); |
| 284 | case IP_TOS: |
| 285 | ret = socketGetOption(opt, null); |
| 286 | if (ret == -1) { // ipv6 tos |
| 287 | return new Integer(trafficClass); |
| 288 | } else { |
| 289 | return new Integer(ret); |
| 290 | } |
| 291 | case SO_KEEPALIVE: |
| 292 | ret = socketGetOption(opt, null); |
| 293 | return Boolean.valueOf(ret != -1); |
| 294 | // should never get here |
| 295 | default: |
| 296 | return null; |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | /** |
| 301 | * The workhorse of the connection operation. Tries several times to |
| 302 | * establish a connection to the given <host, port>. If unsuccessful, |
| 303 | * throws an IOException indicating what went wrong. |
| 304 | */ |
| 305 | |
| 306 | synchronized void doConnect(InetAddress address, int port, int timeout) throws IOException { |
| 307 | try { |
| 308 | FileDescriptor fd = acquireFD(); |
| 309 | try { |
| 310 | socketConnect(address, port, timeout); |
| 311 | // If we have a ref. to the Socket, then sets the flags |
| 312 | // created, bound & connected to true. |
| 313 | // This is normally done in Socket.connect() but some |
| 314 | // subclasses of Socket may call impl.connect() directly! |
| 315 | if (socket != null) { |
| 316 | socket.setBound(); |
| 317 | socket.setConnected(); |
| 318 | } |
| 319 | } finally { |
| 320 | releaseFD(); |
| 321 | } |
| 322 | } catch (IOException e) { |
| 323 | close(); |
| 324 | throw e; |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * Binds the socket to the specified address of the specified local port. |
| 330 | * @param address the address |
| 331 | * @param port the port |
| 332 | */ |
| 333 | protected synchronized void bind(InetAddress address, int lport) |
| 334 | throws IOException |
| 335 | { |
| 336 | socketBind(address, lport); |
| 337 | if (socket != null) |
| 338 | socket.setBound(); |
| 339 | if (serverSocket != null) |
| 340 | serverSocket.setBound(); |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * Listens, for a specified amount of time, for connections. |
| 345 | * @param count the amount of time to listen for connections |
| 346 | */ |
| 347 | protected synchronized void listen(int count) throws IOException { |
| 348 | socketListen(count); |
| 349 | } |
| 350 | |
| 351 | /** |
| 352 | * Accepts connections. |
| 353 | * @param s the connection |
| 354 | */ |
| 355 | protected void accept(SocketImpl s) throws IOException { |
| 356 | FileDescriptor fd = acquireFD(); |
| 357 | try { |
| 358 | socketAccept(s); |
| 359 | } finally { |
| 360 | releaseFD(); |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Gets an InputStream for this socket. |
| 366 | */ |
| 367 | protected synchronized InputStream getInputStream() throws IOException { |
| 368 | if (isClosedOrPending()) { |
| 369 | throw new IOException("Socket Closed"); |
| 370 | } |
| 371 | if (shut_rd) { |
| 372 | throw new IOException("Socket input is shutdown"); |
| 373 | } |
| 374 | if (socketInputStream == null) { |
| 375 | socketInputStream = new SocketInputStream(this); |
| 376 | } |
| 377 | return socketInputStream; |
| 378 | } |
| 379 | |
| 380 | void setInputStream(SocketInputStream in) { |
| 381 | socketInputStream = in; |
| 382 | } |
| 383 | |
| 384 | /** |
| 385 | * Gets an OutputStream for this socket. |
| 386 | */ |
| 387 | protected synchronized OutputStream getOutputStream() throws IOException { |
| 388 | if (isClosedOrPending()) { |
| 389 | throw new IOException("Socket Closed"); |
| 390 | } |
| 391 | if (shut_wr) { |
| 392 | throw new IOException("Socket output is shutdown"); |
| 393 | } |
| 394 | return new SocketOutputStream(this); |
| 395 | } |
| 396 | |
| 397 | void setFileDescriptor(FileDescriptor fd) { |
| 398 | this.fd = fd; |
| 399 | } |
| 400 | |
| 401 | void setAddress(InetAddress address) { |
| 402 | this.address = address; |
| 403 | } |
| 404 | |
| 405 | void setPort(int port) { |
| 406 | this.port = port; |
| 407 | } |
| 408 | |
| 409 | void setLocalPort(int localport) { |
| 410 | this.localport = localport; |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Returns the number of bytes that can be read without blocking. |
| 415 | */ |
| 416 | protected synchronized int available() throws IOException { |
| 417 | if (isClosedOrPending()) { |
| 418 | throw new IOException("Stream closed."); |
| 419 | } |
| 420 | |
| 421 | /* |
| 422 | * If connection has been reset then return 0 to indicate |
| 423 | * there are no buffered bytes. |
| 424 | */ |
| 425 | if (isConnectionReset()) { |
| 426 | return 0; |
| 427 | } |
| 428 | |
| 429 | /* |
| 430 | * If no bytes available and we were previously notified |
| 431 | * of a connection reset then we move to the reset state. |
| 432 | * |
| 433 | * If are notified of a connection reset then check |
| 434 | * again if there are bytes buffered on the socket. |
| 435 | */ |
| 436 | int n = 0; |
| 437 | try { |
| 438 | n = socketAvailable(); |
| 439 | if (n == 0 && isConnectionResetPending()) { |
| 440 | setConnectionReset(); |
| 441 | } |
| 442 | } catch (ConnectionResetException exc1) { |
| 443 | setConnectionResetPending(); |
| 444 | try { |
| 445 | n = socketAvailable(); |
| 446 | if (n == 0) { |
| 447 | setConnectionReset(); |
| 448 | } |
| 449 | } catch (ConnectionResetException exc2) { |
| 450 | } |
| 451 | } |
| 452 | return n; |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * Closes the socket. |
| 457 | */ |
| 458 | protected void close() throws IOException { |
| 459 | synchronized(fdLock) { |
| 460 | if (fd != null) { |
| 461 | if (fdUseCount == 0) { |
| 462 | if (closePending) { |
| 463 | return; |
| 464 | } |
| 465 | closePending = true; |
| 466 | /* |
| 467 | * We close the FileDescriptor in two-steps - first the |
| 468 | * "pre-close" which closes the socket but doesn't |
| 469 | * release the underlying file descriptor. This operation |
| 470 | * may be lengthy due to untransmitted data and a long |
| 471 | * linger interval. Once the pre-close is done we do the |
| 472 | * actual socket to release the fd. |
| 473 | */ |
| 474 | try { |
| 475 | socketPreClose(); |
| 476 | } finally { |
| 477 | socketClose(); |
| 478 | } |
| 479 | fd = null; |
| 480 | return; |
| 481 | } else { |
| 482 | /* |
| 483 | * If a thread has acquired the fd and a close |
| 484 | * isn't pending then use a deferred close. |
| 485 | * Also decrement fdUseCount to signal the last |
| 486 | * thread that releases the fd to close it. |
| 487 | */ |
| 488 | if (!closePending) { |
| 489 | closePending = true; |
| 490 | fdUseCount--; |
| 491 | socketPreClose(); |
| 492 | } |
| 493 | } |
| 494 | } |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | void reset() throws IOException { |
| 499 | if (fd != null) { |
| 500 | socketClose(); |
| 501 | } |
| 502 | fd = null; |
| 503 | super.reset(); |
| 504 | } |
| 505 | |
| 506 | |
| 507 | /** |
| 508 | * Shutdown read-half of the socket connection; |
| 509 | */ |
| 510 | protected void shutdownInput() throws IOException { |
| 511 | if (fd != null) { |
| 512 | socketShutdown(SHUT_RD); |
| 513 | if (socketInputStream != null) { |
| 514 | socketInputStream.setEOF(true); |
| 515 | } |
| 516 | shut_rd = true; |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * Shutdown write-half of the socket connection; |
| 522 | */ |
| 523 | protected void shutdownOutput() throws IOException { |
| 524 | if (fd != null) { |
| 525 | socketShutdown(SHUT_WR); |
| 526 | shut_wr = true; |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | protected boolean supportsUrgentData () { |
| 531 | return true; |
| 532 | } |
| 533 | |
| 534 | protected void sendUrgentData (int data) throws IOException { |
| 535 | if (fd == null) { |
| 536 | throw new IOException("Socket Closed"); |
| 537 | } |
| 538 | socketSendUrgentData (data); |
| 539 | } |
| 540 | |
| 541 | /** |
| 542 | * Cleans up if the user forgets to close it. |
| 543 | */ |
| 544 | protected void finalize() throws IOException { |
| 545 | close(); |
| 546 | } |
| 547 | |
| 548 | |
| 549 | /* |
| 550 | * "Acquires" and returns the FileDescriptor for this impl |
| 551 | * |
| 552 | * A corresponding releaseFD is required to "release" the |
| 553 | * FileDescriptor. |
| 554 | */ |
| 555 | FileDescriptor acquireFD() { |
| 556 | synchronized (fdLock) { |
| 557 | fdUseCount++; |
| 558 | return fd; |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | /* |
| 563 | * "Release" the FileDescriptor for this impl. |
| 564 | * |
| 565 | * If the use count goes to -1 then the socket is closed. |
| 566 | */ |
| 567 | void releaseFD() { |
| 568 | synchronized (fdLock) { |
| 569 | fdUseCount--; |
| 570 | if (fdUseCount == -1) { |
| 571 | if (fd != null) { |
| 572 | try { |
| 573 | socketClose(); |
| 574 | } catch (IOException e) { |
| 575 | } finally { |
| 576 | fd = null; |
| 577 | } |
| 578 | } |
| 579 | } |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | public boolean isConnectionReset() { |
| 584 | synchronized (resetLock) { |
| 585 | return (resetState == CONNECTION_RESET); |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | public boolean isConnectionResetPending() { |
| 590 | synchronized (resetLock) { |
| 591 | return (resetState == CONNECTION_RESET_PENDING); |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | public void setConnectionReset() { |
| 596 | synchronized (resetLock) { |
| 597 | resetState = CONNECTION_RESET; |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | public void setConnectionResetPending() { |
| 602 | synchronized (resetLock) { |
| 603 | if (resetState == CONNECTION_NOT_RESET) { |
| 604 | resetState = CONNECTION_RESET_PENDING; |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | } |
| 609 | |
| 610 | /* |
| 611 | * Return true if already closed or close is pending |
| 612 | */ |
| 613 | public boolean isClosedOrPending() { |
| 614 | /* |
| 615 | * Lock on fdLock to ensure that we wait if a |
| 616 | * close is in progress. |
| 617 | */ |
| 618 | synchronized (fdLock) { |
| 619 | if (closePending || (fd == null)) { |
| 620 | return true; |
| 621 | } else { |
| 622 | return false; |
| 623 | } |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | /* |
| 628 | * Return the current value of SO_TIMEOUT |
| 629 | */ |
| 630 | public int getTimeout() { |
| 631 | return timeout; |
| 632 | } |
| 633 | |
| 634 | /* |
| 635 | * "Pre-close" a socket by dup'ing the file descriptor - this enables |
| 636 | * the socket to be closed without releasing the file descriptor. |
| 637 | */ |
| 638 | private void socketPreClose() throws IOException { |
| 639 | socketClose0(true); |
| 640 | } |
| 641 | |
| 642 | /* |
| 643 | * Close the socket (and release the file descriptor). |
| 644 | */ |
| 645 | protected void socketClose() throws IOException { |
| 646 | socketClose0(false); |
| 647 | } |
| 648 | |
| 649 | abstract void socketCreate(boolean isServer) throws IOException; |
| 650 | abstract void socketConnect(InetAddress address, int port, int timeout) |
| 651 | throws IOException; |
| 652 | abstract void socketBind(InetAddress address, int port) |
| 653 | throws IOException; |
| 654 | abstract void socketListen(int count) |
| 655 | throws IOException; |
| 656 | abstract void socketAccept(SocketImpl s) |
| 657 | throws IOException; |
| 658 | abstract int socketAvailable() |
| 659 | throws IOException; |
| 660 | abstract void socketClose0(boolean useDeferredClose) |
| 661 | throws IOException; |
| 662 | abstract void socketShutdown(int howto) |
| 663 | throws IOException; |
| 664 | abstract void socketSetOption(int cmd, boolean on, Object value) |
| 665 | throws SocketException; |
| 666 | abstract int socketGetOption(int opt, Object iaContainerObj) throws SocketException; |
| 667 | abstract int socketGetOption1(int opt, Object iaContainerObj, FileDescriptor fd) throws SocketException; |
| 668 | abstract void socketSendUrgentData(int data) |
| 669 | throws IOException; |
| 670 | |
| 671 | public final static int SHUT_RD = 0; |
| 672 | public final static int SHUT_WR = 1; |
| 673 | } |
| 674 | |
| 675 | class InetAddressContainer { |
| 676 | InetAddress addr; |
| 677 | } |