author | alanb |
Sun, 27 Oct 2019 12:13:51 +0000 | |
changeset 58808 | 9261ad32cba9 |
parent 55102 | 59567035d279 |
permissions | -rw-r--r-- |
55102 | 1 |
/* |
2 |
* Copyright (c) 2019, 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.FileDescriptor; |
|
29 |
import java.io.IOException; |
|
30 |
import java.io.InputStream; |
|
31 |
import java.io.OutputStream; |
|
32 |
import java.io.UncheckedIOException; |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
33 |
import java.lang.ref.Cleaner.Cleanable; |
55102 | 34 |
import java.net.InetAddress; |
35 |
import java.net.InetSocketAddress; |
|
36 |
import java.net.ProtocolFamily; |
|
37 |
import java.net.SocketAddress; |
|
38 |
import java.net.SocketException; |
|
39 |
import java.net.SocketImpl; |
|
40 |
import java.net.SocketOption; |
|
41 |
import java.net.SocketTimeoutException; |
|
42 |
import java.net.StandardProtocolFamily; |
|
43 |
import java.net.StandardSocketOptions; |
|
44 |
import java.net.UnknownHostException; |
|
45 |
import java.nio.ByteBuffer; |
|
46 |
import java.util.Collections; |
|
47 |
import java.util.HashSet; |
|
48 |
import java.util.Objects; |
|
49 |
import java.util.Set; |
|
50 |
import java.util.concurrent.TimeUnit; |
|
51 |
import java.util.concurrent.locks.ReentrantLock; |
|
52 |
||
53 |
import jdk.internal.ref.CleanerFactory; |
|
54 |
import sun.net.ConnectionResetException; |
|
55 |
import sun.net.NetHooks; |
|
56 |
import sun.net.PlatformSocketImpl; |
|
57 |
import sun.net.ResourceManager; |
|
58 |
import sun.net.ext.ExtendedSocketOptions; |
|
59 |
import sun.net.util.SocketExceptions; |
|
60 |
||
61 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
|
62 |
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
|
63 |
||
64 |
/** |
|
65 |
* NIO based SocketImpl. |
|
66 |
* |
|
67 |
* This implementation attempts to be compatible with legacy PlainSocketImpl, |
|
68 |
* including behavior and exceptions that are not specified by SocketImpl. |
|
69 |
* |
|
70 |
* The underlying socket used by this SocketImpl is initially configured |
|
71 |
* blocking. If the connect method is used to establish a connection with a |
|
72 |
* timeout then the socket is configured non-blocking for the connect attempt, |
|
73 |
* and then restored to blocking mode when the connection is established. |
|
74 |
* If the accept or read methods are used with a timeout then the socket is |
|
75 |
* configured non-blocking and is never restored. When in non-blocking mode, |
|
76 |
* operations that don't complete immediately will poll the socket and preserve |
|
77 |
* the semantics of blocking operations. |
|
78 |
*/ |
|
79 |
||
80 |
public final class NioSocketImpl extends SocketImpl implements PlatformSocketImpl { |
|
81 |
private static final NativeDispatcher nd = new SocketDispatcher(); |
|
82 |
||
83 |
// The maximum number of bytes to read/write per syscall to avoid needing |
|
84 |
// a huge buffer from the temporary buffer cache |
|
85 |
private static final int MAX_BUFFER_SIZE = 128 * 1024; |
|
86 |
||
87 |
// true if this is a SocketImpl for a ServerSocket |
|
88 |
private final boolean server; |
|
89 |
||
90 |
// Lock held when reading (also used when accepting or connecting) |
|
91 |
private final ReentrantLock readLock = new ReentrantLock(); |
|
92 |
||
93 |
// Lock held when writing |
|
94 |
private final ReentrantLock writeLock = new ReentrantLock(); |
|
95 |
||
96 |
// The stateLock for read/changing state |
|
97 |
private final Object stateLock = new Object(); |
|
98 |
private static final int ST_NEW = 0; |
|
99 |
private static final int ST_UNCONNECTED = 1; |
|
100 |
private static final int ST_CONNECTING = 2; |
|
101 |
private static final int ST_CONNECTED = 3; |
|
102 |
private static final int ST_CLOSING = 4; |
|
103 |
private static final int ST_CLOSED = 5; |
|
104 |
private volatile int state; // need stateLock to change |
|
105 |
||
106 |
// set by SocketImpl.create, protected by stateLock |
|
107 |
private boolean stream; |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
108 |
private Cleanable cleaner; |
55102 | 109 |
|
110 |
// set to true when the socket is in non-blocking mode |
|
111 |
private volatile boolean nonBlocking; |
|
112 |
||
113 |
// used by connect/read/write/accept, protected by stateLock |
|
114 |
private long readerThread; |
|
115 |
private long writerThread; |
|
116 |
||
117 |
// used when SO_REUSEADDR is emulated, protected by stateLock |
|
118 |
private boolean isReuseAddress; |
|
119 |
||
120 |
// read or accept timeout in millis |
|
121 |
private volatile int timeout; |
|
122 |
||
123 |
// flags to indicate if the connection is shutdown for input and output |
|
124 |
private volatile boolean isInputClosed; |
|
125 |
private volatile boolean isOutputClosed; |
|
126 |
||
127 |
// used by read to emulate legacy behavior, protected by readLock |
|
128 |
private boolean readEOF; |
|
129 |
private boolean connectionReset; |
|
130 |
||
131 |
/** |
|
132 |
* Creates an instance of this SocketImpl. |
|
133 |
* @param server true if this is a SocketImpl for a ServerSocket |
|
134 |
*/ |
|
135 |
public NioSocketImpl(boolean server) { |
|
136 |
this.server = server; |
|
137 |
} |
|
138 |
||
139 |
/** |
|
140 |
* Returns true if the socket is open. |
|
141 |
*/ |
|
142 |
private boolean isOpen() { |
|
143 |
return state < ST_CLOSING; |
|
144 |
} |
|
145 |
||
146 |
/** |
|
147 |
* Throws SocketException if the socket is not open. |
|
148 |
*/ |
|
149 |
private void ensureOpen() throws SocketException { |
|
150 |
int state = this.state; |
|
151 |
if (state == ST_NEW) |
|
152 |
throw new SocketException("Socket not created"); |
|
153 |
if (state >= ST_CLOSING) |
|
154 |
throw new SocketException("Socket closed"); |
|
155 |
} |
|
156 |
||
157 |
/** |
|
158 |
* Throws SocketException if the socket is not open and connected. |
|
159 |
*/ |
|
160 |
private void ensureOpenAndConnected() throws SocketException { |
|
161 |
int state = this.state; |
|
162 |
if (state < ST_CONNECTED) |
|
163 |
throw new SocketException("Not connected"); |
|
164 |
if (state > ST_CONNECTED) |
|
165 |
throw new SocketException("Socket closed"); |
|
166 |
} |
|
167 |
||
168 |
/** |
|
169 |
* Disables the current thread for scheduling purposes until the socket is |
|
170 |
* ready for I/O, or is asynchronously closed, for up to the specified |
|
171 |
* waiting time. |
|
172 |
* @throws IOException if an I/O error occurs |
|
173 |
*/ |
|
174 |
private void park(FileDescriptor fd, int event, long nanos) throws IOException { |
|
175 |
long millis; |
|
176 |
if (nanos == 0) { |
|
177 |
millis = -1; |
|
178 |
} else { |
|
179 |
millis = NANOSECONDS.toMillis(nanos); |
|
180 |
} |
|
181 |
Net.poll(fd, event, millis); |
|
182 |
} |
|
183 |
||
184 |
/** |
|
185 |
* Disables the current thread for scheduling purposes until the socket is |
|
186 |
* ready for I/O or is asynchronously closed. |
|
187 |
* @throws IOException if an I/O error occurs |
|
188 |
*/ |
|
189 |
private void park(FileDescriptor fd, int event) throws IOException { |
|
190 |
park(fd, event, 0); |
|
191 |
} |
|
192 |
||
193 |
/** |
|
194 |
* Configures the socket to blocking mode. This method is a no-op if the |
|
195 |
* socket is already in blocking mode. |
|
196 |
* @throws IOException if closed or there is an I/O error changing the mode |
|
197 |
*/ |
|
198 |
private void configureBlocking(FileDescriptor fd) throws IOException { |
|
199 |
assert readLock.isHeldByCurrentThread(); |
|
200 |
if (nonBlocking) { |
|
201 |
synchronized (stateLock) { |
|
202 |
ensureOpen(); |
|
203 |
IOUtil.configureBlocking(fd, true); |
|
204 |
nonBlocking = false; |
|
205 |
} |
|
206 |
} |
|
207 |
} |
|
208 |
||
209 |
/** |
|
210 |
* Configures the socket to non-blocking mode. This method is a no-op if the |
|
211 |
* socket is already in non-blocking mode. |
|
212 |
* @throws IOException if closed or there is an I/O error changing the mode |
|
213 |
*/ |
|
214 |
private void configureNonBlocking(FileDescriptor fd) throws IOException { |
|
215 |
assert readLock.isHeldByCurrentThread(); |
|
216 |
if (!nonBlocking) { |
|
217 |
synchronized (stateLock) { |
|
218 |
ensureOpen(); |
|
219 |
IOUtil.configureBlocking(fd, false); |
|
220 |
nonBlocking = true; |
|
221 |
} |
|
222 |
} |
|
223 |
} |
|
224 |
||
225 |
/** |
|
226 |
* Marks the beginning of a read operation that might block. |
|
227 |
* @throws SocketException if the socket is closed or not connected |
|
228 |
*/ |
|
229 |
private FileDescriptor beginRead() throws SocketException { |
|
230 |
synchronized (stateLock) { |
|
231 |
ensureOpenAndConnected(); |
|
232 |
readerThread = NativeThread.current(); |
|
233 |
return fd; |
|
234 |
} |
|
235 |
} |
|
236 |
||
237 |
/** |
|
238 |
* Marks the end of a read operation that may have blocked. |
|
239 |
* @throws SocketException is the socket is closed |
|
240 |
*/ |
|
241 |
private void endRead(boolean completed) throws SocketException { |
|
242 |
synchronized (stateLock) { |
|
243 |
readerThread = 0; |
|
244 |
int state = this.state; |
|
245 |
if (state == ST_CLOSING) |
|
246 |
tryFinishClose(); |
|
247 |
if (!completed && state >= ST_CLOSING) |
|
248 |
throw new SocketException("Socket closed"); |
|
249 |
} |
|
250 |
} |
|
251 |
||
252 |
/** |
|
253 |
* Attempts to read bytes from the socket into the given byte array. |
|
254 |
*/ |
|
255 |
private int tryRead(FileDescriptor fd, byte[] b, int off, int len) |
|
256 |
throws IOException |
|
257 |
{ |
|
258 |
ByteBuffer dst = Util.getTemporaryDirectBuffer(len); |
|
259 |
assert dst.position() == 0; |
|
260 |
try { |
|
261 |
int n = nd.read(fd, ((DirectBuffer)dst).address(), len); |
|
262 |
if (n > 0) { |
|
263 |
dst.get(b, off, n); |
|
264 |
} |
|
265 |
return n; |
|
266 |
} finally { |
|
267 |
Util.offerFirstTemporaryDirectBuffer(dst); |
|
268 |
} |
|
269 |
} |
|
270 |
||
271 |
/** |
|
272 |
* Reads bytes from the socket into the given byte array with a timeout. |
|
273 |
* @throws SocketTimeoutException if the read timeout elapses |
|
274 |
*/ |
|
275 |
private int timedRead(FileDescriptor fd, byte[] b, int off, int len, long nanos) |
|
276 |
throws IOException |
|
277 |
{ |
|
278 |
long startNanos = System.nanoTime(); |
|
279 |
int n = tryRead(fd, b, off, len); |
|
280 |
while (n == IOStatus.UNAVAILABLE && isOpen()) { |
|
281 |
long remainingNanos = nanos - (System.nanoTime() - startNanos); |
|
282 |
if (remainingNanos <= 0) { |
|
283 |
throw new SocketTimeoutException("Read timed out"); |
|
284 |
} |
|
285 |
park(fd, Net.POLLIN, remainingNanos); |
|
286 |
n = tryRead(fd, b, off, len); |
|
287 |
} |
|
288 |
return n; |
|
289 |
} |
|
290 |
||
291 |
/** |
|
292 |
* Reads bytes from the socket into the given byte array. |
|
293 |
* @return the number of bytes read or -1 at EOF |
|
294 |
* @throws SocketException if the socket is closed or a socket I/O error occurs |
|
295 |
* @throws SocketTimeoutException if the read timeout elapses |
|
296 |
*/ |
|
297 |
private int implRead(byte[] b, int off, int len) throws IOException { |
|
298 |
int n = 0; |
|
299 |
FileDescriptor fd = beginRead(); |
|
300 |
try { |
|
301 |
if (connectionReset) |
|
302 |
throw new SocketException("Connection reset"); |
|
303 |
if (isInputClosed) |
|
304 |
return -1; |
|
305 |
int timeout = this.timeout; |
|
306 |
if (timeout > 0) { |
|
307 |
// read with timeout |
|
308 |
configureNonBlocking(fd); |
|
309 |
n = timedRead(fd, b, off, len, MILLISECONDS.toNanos(timeout)); |
|
310 |
} else { |
|
311 |
// read, no timeout |
|
312 |
n = tryRead(fd, b, off, len); |
|
313 |
while (IOStatus.okayToRetry(n) && isOpen()) { |
|
314 |
park(fd, Net.POLLIN); |
|
315 |
n = tryRead(fd, b, off, len); |
|
316 |
} |
|
317 |
} |
|
318 |
return n; |
|
319 |
} catch (SocketTimeoutException e) { |
|
320 |
throw e; |
|
321 |
} catch (ConnectionResetException e) { |
|
322 |
connectionReset = true; |
|
323 |
throw new SocketException("Connection reset"); |
|
324 |
} catch (IOException ioe) { |
|
325 |
throw new SocketException(ioe.getMessage()); |
|
326 |
} finally { |
|
327 |
endRead(n > 0); |
|
328 |
} |
|
329 |
} |
|
330 |
||
331 |
/** |
|
332 |
* Reads bytes from the socket into the given byte array. |
|
333 |
* @return the number of bytes read or -1 at EOF |
|
334 |
* @throws IndexOutOfBoundsException if the bound checks fail |
|
335 |
* @throws SocketException if the socket is closed or a socket I/O error occurs |
|
336 |
* @throws SocketTimeoutException if the read timeout elapses |
|
337 |
*/ |
|
338 |
private int read(byte[] b, int off, int len) throws IOException { |
|
339 |
Objects.checkFromIndexSize(off, len, b.length); |
|
340 |
if (len == 0) { |
|
341 |
return 0; |
|
342 |
} else { |
|
343 |
readLock.lock(); |
|
344 |
try { |
|
345 |
// emulate legacy behavior to return -1, even if socket is closed |
|
346 |
if (readEOF) |
|
347 |
return -1; |
|
348 |
// read up to MAX_BUFFER_SIZE bytes |
|
349 |
int size = Math.min(len, MAX_BUFFER_SIZE); |
|
350 |
int n = implRead(b, off, size); |
|
351 |
if (n == -1) |
|
352 |
readEOF = true; |
|
353 |
return n; |
|
354 |
} finally { |
|
355 |
readLock.unlock(); |
|
356 |
} |
|
357 |
} |
|
358 |
} |
|
359 |
||
360 |
/** |
|
361 |
* Marks the beginning of a write operation that might block. |
|
362 |
* @throws SocketException if the socket is closed or not connected |
|
363 |
*/ |
|
364 |
private FileDescriptor beginWrite() throws SocketException { |
|
365 |
synchronized (stateLock) { |
|
366 |
ensureOpenAndConnected(); |
|
367 |
writerThread = NativeThread.current(); |
|
368 |
return fd; |
|
369 |
} |
|
370 |
} |
|
371 |
||
372 |
/** |
|
373 |
* Marks the end of a write operation that may have blocked. |
|
374 |
* @throws SocketException is the socket is closed |
|
375 |
*/ |
|
376 |
private void endWrite(boolean completed) throws SocketException { |
|
377 |
synchronized (stateLock) { |
|
378 |
writerThread = 0; |
|
379 |
int state = this.state; |
|
380 |
if (state == ST_CLOSING) |
|
381 |
tryFinishClose(); |
|
382 |
if (!completed && state >= ST_CLOSING) |
|
383 |
throw new SocketException("Socket closed"); |
|
384 |
} |
|
385 |
} |
|
386 |
||
387 |
/** |
|
388 |
* Attempts to write a sequence of bytes to the socket from the given |
|
389 |
* byte array. |
|
390 |
*/ |
|
391 |
private int tryWrite(FileDescriptor fd, byte[] b, int off, int len) |
|
392 |
throws IOException |
|
393 |
{ |
|
394 |
ByteBuffer src = Util.getTemporaryDirectBuffer(len); |
|
395 |
assert src.position() == 0; |
|
396 |
try { |
|
397 |
src.put(b, off, len); |
|
398 |
return nd.write(fd, ((DirectBuffer)src).address(), len); |
|
399 |
} finally { |
|
400 |
Util.offerFirstTemporaryDirectBuffer(src); |
|
401 |
} |
|
402 |
} |
|
403 |
||
404 |
/** |
|
405 |
* Writes a sequence of bytes to the socket from the given byte array. |
|
406 |
* @return the number of bytes written |
|
407 |
* @throws SocketException if the socket is closed or a socket I/O error occurs |
|
408 |
*/ |
|
409 |
private int implWrite(byte[] b, int off, int len) throws IOException { |
|
410 |
int n = 0; |
|
411 |
FileDescriptor fd = beginWrite(); |
|
412 |
try { |
|
413 |
n = tryWrite(fd, b, off, len); |
|
414 |
while (IOStatus.okayToRetry(n) && isOpen()) { |
|
415 |
park(fd, Net.POLLOUT); |
|
416 |
n = tryWrite(fd, b, off, len); |
|
417 |
} |
|
418 |
return n; |
|
419 |
} catch (IOException ioe) { |
|
420 |
throw new SocketException(ioe.getMessage()); |
|
421 |
} finally { |
|
422 |
endWrite(n > 0); |
|
423 |
} |
|
424 |
} |
|
425 |
||
426 |
/** |
|
427 |
* Writes a sequence of bytes to the socket from the given byte array. |
|
428 |
* @throws SocketException if the socket is closed or a socket I/O error occurs |
|
429 |
*/ |
|
430 |
private void write(byte[] b, int off, int len) throws IOException { |
|
431 |
Objects.checkFromIndexSize(off, len, b.length); |
|
432 |
if (len > 0) { |
|
433 |
writeLock.lock(); |
|
434 |
try { |
|
435 |
int pos = off; |
|
436 |
int end = off + len; |
|
437 |
while (pos < end) { |
|
438 |
// write up to MAX_BUFFER_SIZE bytes |
|
439 |
int size = Math.min((end - pos), MAX_BUFFER_SIZE); |
|
440 |
int n = implWrite(b, pos, size); |
|
441 |
pos += n; |
|
442 |
} |
|
443 |
} finally { |
|
444 |
writeLock.unlock(); |
|
445 |
} |
|
446 |
} |
|
447 |
} |
|
448 |
||
449 |
/** |
|
450 |
* Creates the socket. |
|
451 |
* @param stream {@code true} for a streams socket |
|
452 |
*/ |
|
453 |
@Override |
|
454 |
protected void create(boolean stream) throws IOException { |
|
455 |
synchronized (stateLock) { |
|
456 |
if (state != ST_NEW) |
|
457 |
throw new IOException("Already created"); |
|
458 |
if (!stream) |
|
459 |
ResourceManager.beforeUdpCreate(); |
|
460 |
FileDescriptor fd; |
|
461 |
try { |
|
462 |
if (server) { |
|
463 |
assert stream; |
|
464 |
fd = Net.serverSocket(true); |
|
465 |
} else { |
|
466 |
fd = Net.socket(stream); |
|
467 |
} |
|
468 |
} catch (IOException ioe) { |
|
469 |
if (!stream) |
|
470 |
ResourceManager.afterUdpClose(); |
|
471 |
throw ioe; |
|
472 |
} |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
473 |
Runnable closer = closerFor(fd, stream); |
55102 | 474 |
this.fd = fd; |
475 |
this.stream = stream; |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
476 |
this.cleaner = CleanerFactory.cleaner().register(this, closer); |
55102 | 477 |
this.state = ST_UNCONNECTED; |
478 |
} |
|
479 |
} |
|
480 |
||
481 |
/** |
|
482 |
* Marks the beginning of a connect operation that might block. |
|
483 |
* @throws SocketException if the socket is closed or already connected |
|
484 |
*/ |
|
485 |
private FileDescriptor beginConnect(InetAddress address, int port) |
|
486 |
throws IOException |
|
487 |
{ |
|
488 |
synchronized (stateLock) { |
|
489 |
int state = this.state; |
|
490 |
if (state != ST_UNCONNECTED) { |
|
491 |
if (state == ST_NEW) |
|
492 |
throw new SocketException("Not created"); |
|
493 |
if (state == ST_CONNECTING) |
|
494 |
throw new SocketException("Connection in progress"); |
|
495 |
if (state == ST_CONNECTED) |
|
496 |
throw new SocketException("Already connected"); |
|
497 |
if (state >= ST_CLOSING) |
|
498 |
throw new SocketException("Socket closed"); |
|
499 |
assert false; |
|
500 |
} |
|
501 |
this.state = ST_CONNECTING; |
|
502 |
||
503 |
// invoke beforeTcpConnect hook if not already bound |
|
504 |
if (localport == 0) { |
|
505 |
NetHooks.beforeTcpConnect(fd, address, port); |
|
506 |
} |
|
507 |
||
508 |
// save the remote address/port |
|
509 |
this.address = address; |
|
510 |
this.port = port; |
|
511 |
||
512 |
readerThread = NativeThread.current(); |
|
513 |
return fd; |
|
514 |
} |
|
515 |
} |
|
516 |
||
517 |
/** |
|
518 |
* Marks the end of a connect operation that may have blocked. |
|
519 |
* @throws SocketException is the socket is closed |
|
520 |
*/ |
|
521 |
private void endConnect(FileDescriptor fd, boolean completed) throws IOException { |
|
522 |
synchronized (stateLock) { |
|
523 |
readerThread = 0; |
|
524 |
int state = this.state; |
|
525 |
if (state == ST_CLOSING) |
|
526 |
tryFinishClose(); |
|
527 |
if (completed && state == ST_CONNECTING) { |
|
528 |
this.state = ST_CONNECTED; |
|
529 |
localport = Net.localAddress(fd).getPort(); |
|
530 |
} else if (!completed && state >= ST_CLOSING) { |
|
531 |
throw new SocketException("Socket closed"); |
|
532 |
} |
|
533 |
} |
|
534 |
} |
|
535 |
||
536 |
/** |
|
537 |
* Waits for a connection attempt to finish with a timeout |
|
538 |
* @throws SocketTimeoutException if the connect timeout elapses |
|
539 |
*/ |
|
540 |
private boolean timedFinishConnect(FileDescriptor fd, long nanos) throws IOException { |
|
541 |
long startNanos = System.nanoTime(); |
|
542 |
boolean polled = Net.pollConnectNow(fd); |
|
543 |
while (!polled && isOpen()) { |
|
544 |
long remainingNanos = nanos - (System.nanoTime() - startNanos); |
|
545 |
if (remainingNanos <= 0) { |
|
546 |
throw new SocketTimeoutException("Connect timed out"); |
|
547 |
} |
|
548 |
park(fd, Net.POLLOUT, remainingNanos); |
|
549 |
polled = Net.pollConnectNow(fd); |
|
550 |
} |
|
551 |
return polled && isOpen(); |
|
552 |
} |
|
553 |
||
554 |
/** |
|
555 |
* Attempts to establish a connection to the given socket address with a |
|
556 |
* timeout. Closes the socket if connection cannot be established. |
|
557 |
* @throws IOException if the address is not a resolved InetSocketAddress or |
|
558 |
* the connection cannot be established |
|
559 |
*/ |
|
560 |
@Override |
|
561 |
protected void connect(SocketAddress remote, int millis) throws IOException { |
|
562 |
// SocketImpl connect only specifies IOException |
|
563 |
if (!(remote instanceof InetSocketAddress)) |
|
564 |
throw new IOException("Unsupported address type"); |
|
565 |
InetSocketAddress isa = (InetSocketAddress) remote; |
|
566 |
if (isa.isUnresolved()) { |
|
567 |
throw new UnknownHostException(isa.getHostName()); |
|
568 |
} |
|
569 |
||
570 |
InetAddress address = isa.getAddress(); |
|
571 |
if (address.isAnyLocalAddress()) |
|
572 |
address = InetAddress.getLocalHost(); |
|
573 |
int port = isa.getPort(); |
|
574 |
||
575 |
ReentrantLock connectLock = readLock; |
|
576 |
try { |
|
577 |
connectLock.lock(); |
|
578 |
try { |
|
579 |
boolean connected = false; |
|
580 |
FileDescriptor fd = beginConnect(address, port); |
|
581 |
try { |
|
582 |
||
583 |
// configure socket to non-blocking mode when there is a timeout |
|
584 |
if (millis > 0) { |
|
585 |
configureNonBlocking(fd); |
|
586 |
} |
|
587 |
||
588 |
int n = Net.connect(fd, address, port); |
|
589 |
if (n > 0) { |
|
590 |
// connection established |
|
591 |
connected = true; |
|
592 |
} else { |
|
593 |
assert IOStatus.okayToRetry(n); |
|
594 |
if (millis > 0) { |
|
595 |
// finish connect with timeout |
|
596 |
long nanos = MILLISECONDS.toNanos(millis); |
|
597 |
connected = timedFinishConnect(fd, nanos); |
|
598 |
} else { |
|
599 |
// finish connect, no timeout |
|
600 |
boolean polled = false; |
|
601 |
while (!polled && isOpen()) { |
|
602 |
park(fd, Net.POLLOUT); |
|
603 |
polled = Net.pollConnectNow(fd); |
|
604 |
} |
|
605 |
connected = polled && isOpen(); |
|
606 |
} |
|
607 |
} |
|
608 |
||
609 |
// restore socket to blocking mode |
|
610 |
if (connected && millis > 0) { |
|
611 |
configureBlocking(fd); |
|
612 |
} |
|
613 |
||
614 |
} finally { |
|
615 |
endConnect(fd, connected); |
|
616 |
} |
|
617 |
} finally { |
|
618 |
connectLock.unlock(); |
|
619 |
} |
|
620 |
} catch (IOException ioe) { |
|
621 |
close(); |
|
622 |
throw SocketExceptions.of(ioe, isa); |
|
623 |
} |
|
624 |
} |
|
625 |
||
626 |
@Override |
|
627 |
protected void connect(String host, int port) throws IOException { |
|
628 |
connect(new InetSocketAddress(host, port), 0); |
|
629 |
} |
|
630 |
||
631 |
@Override |
|
632 |
protected void connect(InetAddress address, int port) throws IOException { |
|
633 |
connect(new InetSocketAddress(address, port), 0); |
|
634 |
} |
|
635 |
||
636 |
@Override |
|
637 |
protected void bind(InetAddress host, int port) throws IOException { |
|
638 |
synchronized (stateLock) { |
|
639 |
ensureOpen(); |
|
640 |
if (localport != 0) |
|
641 |
throw new SocketException("Already bound"); |
|
642 |
NetHooks.beforeTcpBind(fd, host, port); |
|
643 |
Net.bind(fd, host, port); |
|
644 |
// set the address field to the given host address to keep |
|
645 |
// compatibility with PlainSocketImpl. When binding to 0.0.0.0 |
|
646 |
// then the actual local address will be ::0 when IPv6 is enabled. |
|
647 |
address = host; |
|
648 |
localport = Net.localAddress(fd).getPort(); |
|
649 |
} |
|
650 |
} |
|
651 |
||
652 |
@Override |
|
653 |
protected void listen(int backlog) throws IOException { |
|
654 |
synchronized (stateLock) { |
|
655 |
ensureOpen(); |
|
656 |
if (localport == 0) |
|
657 |
throw new SocketException("Not bound"); |
|
658 |
Net.listen(fd, backlog < 1 ? 50 : backlog); |
|
659 |
} |
|
660 |
} |
|
661 |
||
662 |
/** |
|
663 |
* Marks the beginning of an accept operation that might block. |
|
664 |
* @throws SocketException if the socket is closed |
|
665 |
*/ |
|
666 |
private FileDescriptor beginAccept() throws SocketException { |
|
667 |
synchronized (stateLock) { |
|
668 |
ensureOpen(); |
|
669 |
if (!stream) |
|
670 |
throw new SocketException("Not a stream socket"); |
|
671 |
if (localport == 0) |
|
672 |
throw new SocketException("Not bound"); |
|
673 |
readerThread = NativeThread.current(); |
|
674 |
return fd; |
|
675 |
} |
|
676 |
} |
|
677 |
||
678 |
/** |
|
679 |
* Marks the end of an accept operation that may have blocked. |
|
680 |
* @throws SocketException is the socket is closed |
|
681 |
*/ |
|
682 |
private void endAccept(boolean completed) throws SocketException { |
|
683 |
synchronized (stateLock) { |
|
684 |
int state = this.state; |
|
685 |
readerThread = 0; |
|
686 |
if (state == ST_CLOSING) |
|
687 |
tryFinishClose(); |
|
688 |
if (!completed && state >= ST_CLOSING) |
|
689 |
throw new SocketException("Socket closed"); |
|
690 |
} |
|
691 |
} |
|
692 |
||
693 |
/** |
|
694 |
* Accepts a new connection with a timeout. |
|
695 |
* @throws SocketTimeoutException if the accept timeout elapses |
|
696 |
*/ |
|
697 |
private int timedAccept(FileDescriptor fd, |
|
698 |
FileDescriptor newfd, |
|
699 |
InetSocketAddress[] isaa, |
|
700 |
long nanos) |
|
701 |
throws IOException |
|
702 |
{ |
|
703 |
long startNanos = System.nanoTime(); |
|
704 |
int n = Net.accept(fd, newfd, isaa); |
|
705 |
while (n == IOStatus.UNAVAILABLE && isOpen()) { |
|
706 |
long remainingNanos = nanos - (System.nanoTime() - startNanos); |
|
707 |
if (remainingNanos <= 0) { |
|
708 |
throw new SocketTimeoutException("Accept timed out"); |
|
709 |
} |
|
710 |
park(fd, Net.POLLIN, remainingNanos); |
|
711 |
n = Net.accept(fd, newfd, isaa); |
|
712 |
} |
|
713 |
return n; |
|
714 |
} |
|
715 |
||
716 |
/** |
|
717 |
* Accepts a new connection so that the given SocketImpl is connected to |
|
718 |
* the peer. The SocketImpl must be a newly created NioSocketImpl. |
|
719 |
*/ |
|
720 |
@Override |
|
721 |
protected void accept(SocketImpl si) throws IOException { |
|
722 |
NioSocketImpl nsi = (NioSocketImpl) si; |
|
723 |
if (nsi.state != ST_NEW) |
|
724 |
throw new SocketException("Not a newly created SocketImpl"); |
|
725 |
||
726 |
FileDescriptor newfd = new FileDescriptor(); |
|
727 |
InetSocketAddress[] isaa = new InetSocketAddress[1]; |
|
728 |
||
729 |
// acquire the lock, adjusting the timeout for cases where several |
|
730 |
// threads are accepting connections and there is a timeout set |
|
731 |
ReentrantLock acceptLock = readLock; |
|
732 |
int timeout = this.timeout; |
|
733 |
long remainingNanos = 0; |
|
734 |
if (timeout > 0) { |
|
735 |
remainingNanos = tryLock(acceptLock, timeout, MILLISECONDS); |
|
736 |
if (remainingNanos <= 0) { |
|
737 |
assert !acceptLock.isHeldByCurrentThread(); |
|
738 |
throw new SocketTimeoutException("Accept timed out"); |
|
739 |
} |
|
740 |
} else { |
|
741 |
acceptLock.lock(); |
|
742 |
} |
|
743 |
||
744 |
// accept a connection |
|
745 |
try { |
|
746 |
int n = 0; |
|
747 |
FileDescriptor fd = beginAccept(); |
|
748 |
try { |
|
749 |
if (remainingNanos > 0) { |
|
750 |
// accept with timeout |
|
751 |
configureNonBlocking(fd); |
|
752 |
n = timedAccept(fd, newfd, isaa, remainingNanos); |
|
753 |
} else { |
|
754 |
// accept, no timeout |
|
755 |
n = Net.accept(fd, newfd, isaa); |
|
756 |
while (IOStatus.okayToRetry(n) && isOpen()) { |
|
757 |
park(fd, Net.POLLIN); |
|
758 |
n = Net.accept(fd, newfd, isaa); |
|
759 |
} |
|
760 |
} |
|
761 |
} finally { |
|
762 |
endAccept(n > 0); |
|
763 |
assert IOStatus.check(n); |
|
764 |
} |
|
765 |
} finally { |
|
766 |
acceptLock.unlock(); |
|
767 |
} |
|
768 |
||
769 |
// get local address and configure accepted socket to blocking mode |
|
770 |
InetSocketAddress localAddress; |
|
771 |
try { |
|
772 |
localAddress = Net.localAddress(newfd); |
|
773 |
IOUtil.configureBlocking(newfd, true); |
|
774 |
} catch (IOException ioe) { |
|
775 |
nd.close(newfd); |
|
776 |
throw ioe; |
|
777 |
} |
|
778 |
||
779 |
// set the fields |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
780 |
Runnable closer = closerFor(newfd, true); |
55102 | 781 |
synchronized (nsi.stateLock) { |
782 |
nsi.fd = newfd; |
|
783 |
nsi.stream = true; |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
784 |
nsi.cleaner = CleanerFactory.cleaner().register(nsi, closer); |
55102 | 785 |
nsi.localport = localAddress.getPort(); |
786 |
nsi.address = isaa[0].getAddress(); |
|
787 |
nsi.port = isaa[0].getPort(); |
|
788 |
nsi.state = ST_CONNECTED; |
|
789 |
} |
|
790 |
} |
|
791 |
||
792 |
@Override |
|
793 |
protected InputStream getInputStream() { |
|
794 |
return new InputStream() { |
|
795 |
@Override |
|
796 |
public int read() throws IOException { |
|
797 |
byte[] a = new byte[1]; |
|
798 |
int n = read(a, 0, 1); |
|
799 |
return (n > 0) ? (a[0] & 0xff) : -1; |
|
800 |
} |
|
801 |
@Override |
|
802 |
public int read(byte[] b, int off, int len) throws IOException { |
|
803 |
return NioSocketImpl.this.read(b, off, len); |
|
804 |
} |
|
805 |
@Override |
|
806 |
public int available() throws IOException { |
|
807 |
return NioSocketImpl.this.available(); |
|
808 |
} |
|
809 |
@Override |
|
810 |
public void close() throws IOException { |
|
811 |
NioSocketImpl.this.close(); |
|
812 |
} |
|
813 |
}; |
|
814 |
} |
|
815 |
||
816 |
@Override |
|
817 |
protected OutputStream getOutputStream() { |
|
818 |
return new OutputStream() { |
|
819 |
@Override |
|
820 |
public void write(int b) throws IOException { |
|
821 |
byte[] a = new byte[]{(byte) b}; |
|
822 |
write(a, 0, 1); |
|
823 |
} |
|
824 |
@Override |
|
825 |
public void write(byte[] b, int off, int len) throws IOException { |
|
826 |
NioSocketImpl.this.write(b, off, len); |
|
827 |
} |
|
828 |
@Override |
|
829 |
public void close() throws IOException { |
|
830 |
NioSocketImpl.this.close(); |
|
831 |
} |
|
832 |
}; |
|
833 |
} |
|
834 |
||
835 |
@Override |
|
836 |
protected int available() throws IOException { |
|
837 |
synchronized (stateLock) { |
|
838 |
ensureOpenAndConnected(); |
|
839 |
if (isInputClosed) { |
|
840 |
return 0; |
|
841 |
} else { |
|
842 |
return Net.available(fd); |
|
843 |
} |
|
844 |
} |
|
845 |
} |
|
846 |
||
847 |
/** |
|
848 |
* Closes the socket if there are no I/O operations in progress. |
|
849 |
*/ |
|
850 |
private boolean tryClose() throws IOException { |
|
851 |
assert Thread.holdsLock(stateLock) && state == ST_CLOSING; |
|
852 |
if (readerThread == 0 && writerThread == 0) { |
|
853 |
try { |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
854 |
cleaner.clean(); |
55102 | 855 |
} catch (UncheckedIOException ioe) { |
856 |
throw ioe.getCause(); |
|
857 |
} finally { |
|
858 |
state = ST_CLOSED; |
|
859 |
} |
|
860 |
return true; |
|
861 |
} else { |
|
862 |
return false; |
|
863 |
} |
|
864 |
} |
|
865 |
||
866 |
/** |
|
867 |
* Invokes tryClose to attempt to close the socket. |
|
868 |
* |
|
869 |
* This method is used for deferred closing by I/O operations. |
|
870 |
*/ |
|
871 |
private void tryFinishClose() { |
|
872 |
try { |
|
873 |
tryClose(); |
|
874 |
} catch (IOException ignore) { } |
|
875 |
} |
|
876 |
||
877 |
/** |
|
878 |
* Closes the socket. If there are I/O operations in progress then the |
|
879 |
* socket is pre-closed and the threads are signalled. The socket will be |
|
880 |
* closed when the last I/O operation aborts. |
|
881 |
*/ |
|
882 |
@Override |
|
883 |
protected void close() throws IOException { |
|
884 |
synchronized (stateLock) { |
|
885 |
int state = this.state; |
|
886 |
if (state >= ST_CLOSING) |
|
887 |
return; |
|
888 |
if (state == ST_NEW) { |
|
889 |
// stillborn |
|
890 |
this.state = ST_CLOSED; |
|
891 |
return; |
|
892 |
} |
|
893 |
this.state = ST_CLOSING; |
|
894 |
||
895 |
// shutdown output when linger interval not set to 0 |
|
896 |
try { |
|
897 |
var SO_LINGER = StandardSocketOptions.SO_LINGER; |
|
898 |
if ((int) Net.getSocketOption(fd, SO_LINGER) != 0) { |
|
899 |
Net.shutdown(fd, Net.SHUT_WR); |
|
900 |
} |
|
901 |
} catch (IOException ignore) { } |
|
902 |
||
903 |
// attempt to close the socket. If there are I/O operations in progress |
|
904 |
// then the socket is pre-closed and the thread(s) signalled. The |
|
905 |
// last thread will close the file descriptor. |
|
906 |
if (!tryClose()) { |
|
907 |
nd.preClose(fd); |
|
908 |
long reader = readerThread; |
|
909 |
if (reader != 0) |
|
910 |
NativeThread.signal(reader); |
|
911 |
long writer = writerThread; |
|
912 |
if (writer != 0) |
|
913 |
NativeThread.signal(writer); |
|
914 |
} |
|
915 |
} |
|
916 |
} |
|
917 |
||
918 |
// the socket options supported by client and server sockets |
|
919 |
private static volatile Set<SocketOption<?>> clientSocketOptions; |
|
920 |
private static volatile Set<SocketOption<?>> serverSocketOptions; |
|
921 |
||
922 |
@Override |
|
923 |
protected Set<SocketOption<?>> supportedOptions() { |
|
924 |
Set<SocketOption<?>> options = (server) ? serverSocketOptions : clientSocketOptions; |
|
925 |
if (options == null) { |
|
926 |
options = new HashSet<>(); |
|
927 |
options.add(StandardSocketOptions.SO_RCVBUF); |
|
928 |
options.add(StandardSocketOptions.SO_REUSEADDR); |
|
929 |
if (server) { |
|
930 |
// IP_TOS added for server socket to maintain compatibility |
|
931 |
options.add(StandardSocketOptions.IP_TOS); |
|
932 |
options.addAll(ExtendedSocketOptions.serverSocketOptions()); |
|
933 |
} else { |
|
934 |
options.add(StandardSocketOptions.IP_TOS); |
|
935 |
options.add(StandardSocketOptions.SO_KEEPALIVE); |
|
936 |
options.add(StandardSocketOptions.SO_SNDBUF); |
|
937 |
options.add(StandardSocketOptions.SO_LINGER); |
|
938 |
options.add(StandardSocketOptions.TCP_NODELAY); |
|
939 |
options.addAll(ExtendedSocketOptions.clientSocketOptions()); |
|
940 |
} |
|
941 |
if (Net.isReusePortAvailable()) |
|
942 |
options.add(StandardSocketOptions.SO_REUSEPORT); |
|
943 |
options = Collections.unmodifiableSet(options); |
|
944 |
if (server) { |
|
945 |
serverSocketOptions = options; |
|
946 |
} else { |
|
947 |
clientSocketOptions = options; |
|
948 |
} |
|
949 |
} |
|
950 |
return options; |
|
951 |
} |
|
952 |
||
953 |
@Override |
|
954 |
protected <T> void setOption(SocketOption<T> opt, T value) throws IOException { |
|
955 |
if (!supportedOptions().contains(opt)) |
|
956 |
throw new UnsupportedOperationException("'" + opt + "' not supported"); |
|
957 |
if (!opt.type().isInstance(value)) |
|
958 |
throw new IllegalArgumentException("Invalid value '" + value + "'"); |
|
959 |
synchronized (stateLock) { |
|
960 |
ensureOpen(); |
|
961 |
if (opt == StandardSocketOptions.IP_TOS) { |
|
962 |
// maps to IP_TOS or IPV6_TCLASS |
|
963 |
Net.setSocketOption(fd, family(), opt, value); |
|
964 |
} else if (opt == StandardSocketOptions.SO_REUSEADDR) { |
|
965 |
boolean b = (boolean) value; |
|
966 |
if (Net.useExclusiveBind()) { |
|
967 |
isReuseAddress = b; |
|
968 |
} else { |
|
969 |
Net.setSocketOption(fd, opt, b); |
|
970 |
} |
|
971 |
} else { |
|
972 |
// option does not need special handling |
|
973 |
Net.setSocketOption(fd, opt, value); |
|
974 |
} |
|
975 |
} |
|
976 |
} |
|
977 |
||
978 |
@SuppressWarnings("unchecked") |
|
979 |
protected <T> T getOption(SocketOption<T> opt) throws IOException { |
|
980 |
if (!supportedOptions().contains(opt)) |
|
981 |
throw new UnsupportedOperationException("'" + opt + "' not supported"); |
|
982 |
synchronized (stateLock) { |
|
983 |
ensureOpen(); |
|
984 |
if (opt == StandardSocketOptions.IP_TOS) { |
|
985 |
return (T) Net.getSocketOption(fd, family(), opt); |
|
986 |
} else if (opt == StandardSocketOptions.SO_REUSEADDR) { |
|
987 |
if (Net.useExclusiveBind()) { |
|
988 |
return (T) Boolean.valueOf(isReuseAddress); |
|
989 |
} else { |
|
990 |
return (T) Net.getSocketOption(fd, opt); |
|
991 |
} |
|
992 |
} else { |
|
993 |
// option does not need special handling |
|
994 |
return (T) Net.getSocketOption(fd, opt); |
|
995 |
} |
|
996 |
} |
|
997 |
} |
|
998 |
||
999 |
private boolean booleanValue(Object value, String desc) throws SocketException { |
|
1000 |
if (!(value instanceof Boolean)) |
|
1001 |
throw new SocketException("Bad value for " + desc); |
|
1002 |
return (boolean) value; |
|
1003 |
} |
|
1004 |
||
1005 |
private int intValue(Object value, String desc) throws SocketException { |
|
1006 |
if (!(value instanceof Integer)) |
|
1007 |
throw new SocketException("Bad value for " + desc); |
|
1008 |
return (int) value; |
|
1009 |
} |
|
1010 |
||
1011 |
@Override |
|
1012 |
public void setOption(int opt, Object value) throws SocketException { |
|
1013 |
synchronized (stateLock) { |
|
1014 |
ensureOpen(); |
|
1015 |
try { |
|
1016 |
switch (opt) { |
|
1017 |
case SO_LINGER: { |
|
1018 |
// the value is "false" to disable, or linger interval to enable |
|
1019 |
int i; |
|
1020 |
if (value instanceof Boolean && ((boolean) value) == false) { |
|
1021 |
i = -1; |
|
1022 |
} else { |
|
1023 |
i = intValue(value, "SO_LINGER"); |
|
1024 |
} |
|
1025 |
Net.setSocketOption(fd, StandardSocketOptions.SO_LINGER, i); |
|
1026 |
break; |
|
1027 |
} |
|
1028 |
case SO_TIMEOUT: { |
|
1029 |
int i = intValue(value, "SO_TIMEOUT"); |
|
1030 |
if (i < 0) |
|
1031 |
throw new IllegalArgumentException("timeout < 0"); |
|
1032 |
timeout = i; |
|
1033 |
break; |
|
1034 |
} |
|
1035 |
case IP_TOS: { |
|
1036 |
int i = intValue(value, "IP_TOS"); |
|
1037 |
Net.setSocketOption(fd, family(), StandardSocketOptions.IP_TOS, i); |
|
1038 |
break; |
|
1039 |
} |
|
1040 |
case TCP_NODELAY: { |
|
1041 |
boolean b = booleanValue(value, "TCP_NODELAY"); |
|
1042 |
Net.setSocketOption(fd, StandardSocketOptions.TCP_NODELAY, b); |
|
1043 |
break; |
|
1044 |
} |
|
1045 |
case SO_SNDBUF: { |
|
1046 |
int i = intValue(value, "SO_SNDBUF"); |
|
1047 |
if (i <= 0) |
|
1048 |
throw new SocketException("SO_SNDBUF <= 0"); |
|
1049 |
Net.setSocketOption(fd, StandardSocketOptions.SO_SNDBUF, i); |
|
1050 |
break; |
|
1051 |
} |
|
1052 |
case SO_RCVBUF: { |
|
1053 |
int i = intValue(value, "SO_RCVBUF"); |
|
1054 |
if (i <= 0) |
|
1055 |
throw new SocketException("SO_RCVBUF <= 0"); |
|
1056 |
Net.setSocketOption(fd, StandardSocketOptions.SO_RCVBUF, i); |
|
1057 |
break; |
|
1058 |
} |
|
1059 |
case SO_KEEPALIVE: { |
|
1060 |
boolean b = booleanValue(value, "SO_KEEPALIVE"); |
|
1061 |
Net.setSocketOption(fd, StandardSocketOptions.SO_KEEPALIVE, b); |
|
1062 |
break; |
|
1063 |
} |
|
1064 |
case SO_OOBINLINE: { |
|
1065 |
boolean b = booleanValue(value, "SO_OOBINLINE"); |
|
1066 |
Net.setSocketOption(fd, ExtendedSocketOption.SO_OOBINLINE, b); |
|
1067 |
break; |
|
1068 |
} |
|
1069 |
case SO_REUSEADDR: { |
|
1070 |
boolean b = booleanValue(value, "SO_REUSEADDR"); |
|
1071 |
if (Net.useExclusiveBind()) { |
|
1072 |
isReuseAddress = b; |
|
1073 |
} else { |
|
1074 |
Net.setSocketOption(fd, StandardSocketOptions.SO_REUSEADDR, b); |
|
1075 |
} |
|
1076 |
break; |
|
1077 |
} |
|
1078 |
case SO_REUSEPORT: { |
|
1079 |
if (!Net.isReusePortAvailable()) |
|
1080 |
throw new SocketException("SO_REUSEPORT not supported"); |
|
1081 |
boolean b = booleanValue(value, "SO_REUSEPORT"); |
|
1082 |
Net.setSocketOption(fd, StandardSocketOptions.SO_REUSEPORT, b); |
|
1083 |
break; |
|
1084 |
} |
|
1085 |
default: |
|
1086 |
throw new SocketException("Unknown option " + opt); |
|
1087 |
} |
|
1088 |
} catch (SocketException e) { |
|
1089 |
throw e; |
|
1090 |
} catch (IllegalArgumentException | IOException e) { |
|
1091 |
throw new SocketException(e.getMessage()); |
|
1092 |
} |
|
1093 |
} |
|
1094 |
} |
|
1095 |
||
1096 |
@Override |
|
1097 |
public Object getOption(int opt) throws SocketException { |
|
1098 |
synchronized (stateLock) { |
|
1099 |
ensureOpen(); |
|
1100 |
try { |
|
1101 |
switch (opt) { |
|
1102 |
case SO_TIMEOUT: |
|
1103 |
return timeout; |
|
1104 |
case TCP_NODELAY: |
|
1105 |
return Net.getSocketOption(fd, StandardSocketOptions.TCP_NODELAY); |
|
1106 |
case SO_OOBINLINE: |
|
1107 |
return Net.getSocketOption(fd, ExtendedSocketOption.SO_OOBINLINE); |
|
1108 |
case SO_LINGER: { |
|
1109 |
// return "false" when disabled, linger interval when enabled |
|
1110 |
int i = (int) Net.getSocketOption(fd, StandardSocketOptions.SO_LINGER); |
|
1111 |
if (i == -1) { |
|
1112 |
return Boolean.FALSE; |
|
1113 |
} else { |
|
1114 |
return i; |
|
1115 |
} |
|
1116 |
} |
|
1117 |
case SO_REUSEADDR: |
|
1118 |
if (Net.useExclusiveBind()) { |
|
1119 |
return isReuseAddress; |
|
1120 |
} else { |
|
1121 |
return Net.getSocketOption(fd, StandardSocketOptions.SO_REUSEADDR); |
|
1122 |
} |
|
1123 |
case SO_BINDADDR: |
|
1124 |
return Net.localAddress(fd).getAddress(); |
|
1125 |
case SO_SNDBUF: |
|
1126 |
return Net.getSocketOption(fd, StandardSocketOptions.SO_SNDBUF); |
|
1127 |
case SO_RCVBUF: |
|
1128 |
return Net.getSocketOption(fd, StandardSocketOptions.SO_RCVBUF); |
|
1129 |
case IP_TOS: |
|
1130 |
return Net.getSocketOption(fd, family(), StandardSocketOptions.IP_TOS); |
|
1131 |
case SO_KEEPALIVE: |
|
1132 |
return Net.getSocketOption(fd, StandardSocketOptions.SO_KEEPALIVE); |
|
1133 |
case SO_REUSEPORT: |
|
1134 |
if (!Net.isReusePortAvailable()) |
|
1135 |
throw new SocketException("SO_REUSEPORT not supported"); |
|
1136 |
return Net.getSocketOption(fd, StandardSocketOptions.SO_REUSEPORT); |
|
1137 |
default: |
|
1138 |
throw new SocketException("Unknown option " + opt); |
|
1139 |
} |
|
1140 |
} catch (SocketException e) { |
|
1141 |
throw e; |
|
1142 |
} catch (IllegalArgumentException | IOException e) { |
|
1143 |
throw new SocketException(e.getMessage()); |
|
1144 |
} |
|
1145 |
} |
|
1146 |
} |
|
1147 |
||
1148 |
@Override |
|
1149 |
protected void shutdownInput() throws IOException { |
|
1150 |
synchronized (stateLock) { |
|
1151 |
ensureOpenAndConnected(); |
|
1152 |
if (!isInputClosed) { |
|
1153 |
Net.shutdown(fd, Net.SHUT_RD); |
|
1154 |
isInputClosed = true; |
|
1155 |
} |
|
1156 |
} |
|
1157 |
} |
|
1158 |
||
1159 |
@Override |
|
1160 |
protected void shutdownOutput() throws IOException { |
|
1161 |
synchronized (stateLock) { |
|
1162 |
ensureOpenAndConnected(); |
|
1163 |
if (!isOutputClosed) { |
|
1164 |
Net.shutdown(fd, Net.SHUT_WR); |
|
1165 |
isOutputClosed = true; |
|
1166 |
} |
|
1167 |
} |
|
1168 |
} |
|
1169 |
||
1170 |
@Override |
|
1171 |
protected boolean supportsUrgentData() { |
|
1172 |
return true; |
|
1173 |
} |
|
1174 |
||
1175 |
@Override |
|
1176 |
protected void sendUrgentData(int data) throws IOException { |
|
1177 |
writeLock.lock(); |
|
1178 |
try { |
|
1179 |
int n = 0; |
|
1180 |
FileDescriptor fd = beginWrite(); |
|
1181 |
try { |
|
1182 |
do { |
|
1183 |
n = Net.sendOOB(fd, (byte) data); |
|
1184 |
} while (n == IOStatus.INTERRUPTED && isOpen()); |
|
1185 |
if (n == IOStatus.UNAVAILABLE) { |
|
1186 |
throw new SocketException("No buffer space available"); |
|
1187 |
} |
|
1188 |
} finally { |
|
1189 |
endWrite(n > 0); |
|
1190 |
} |
|
1191 |
} finally { |
|
1192 |
writeLock.unlock(); |
|
1193 |
} |
|
1194 |
} |
|
1195 |
||
1196 |
/** |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1197 |
* Returns an action to close the given file descriptor. |
55102 | 1198 |
*/ |
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1199 |
private static Runnable closerFor(FileDescriptor fd, boolean stream) { |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1200 |
if (stream) { |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1201 |
return () -> { |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1202 |
try { |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1203 |
nd.close(fd); |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1204 |
} catch (IOException ioe) { |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1205 |
throw new UncheckedIOException(ioe); |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1206 |
} |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1207 |
}; |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1208 |
} else { |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1209 |
return () -> { |
55102 | 1210 |
try { |
1211 |
nd.close(fd); |
|
1212 |
} catch (IOException ioe) { |
|
1213 |
throw new UncheckedIOException(ioe); |
|
1214 |
} finally { |
|
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1215 |
// decrement |
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1216 |
ResourceManager.afterUdpClose(); |
55102 | 1217 |
} |
58808
9261ad32cba9
8212132: (dc) Remove DatagramChannelImpl finalize method
alanb
parents:
55102
diff
changeset
|
1218 |
}; |
55102 | 1219 |
} |
1220 |
} |
|
1221 |
||
1222 |
/** |
|
1223 |
* Attempts to acquire the given lock within the given waiting time. |
|
1224 |
* @return the remaining time in nanoseconds when the lock is acquired, zero |
|
1225 |
* or less if the lock was not acquired before the timeout expired |
|
1226 |
*/ |
|
1227 |
private static long tryLock(ReentrantLock lock, long timeout, TimeUnit unit) { |
|
1228 |
assert timeout > 0; |
|
1229 |
boolean interrupted = false; |
|
1230 |
long nanos = NANOSECONDS.convert(timeout, unit); |
|
1231 |
long remainingNanos = nanos; |
|
1232 |
long startNanos = System.nanoTime(); |
|
1233 |
boolean acquired = false; |
|
1234 |
while (!acquired && (remainingNanos > 0)) { |
|
1235 |
try { |
|
1236 |
acquired = lock.tryLock(remainingNanos, NANOSECONDS); |
|
1237 |
} catch (InterruptedException e) { |
|
1238 |
interrupted = true; |
|
1239 |
} |
|
1240 |
remainingNanos = nanos - (System.nanoTime() - startNanos); |
|
1241 |
} |
|
1242 |
if (acquired && remainingNanos <= 0L) |
|
1243 |
lock.unlock(); // release lock if timeout has expired |
|
1244 |
if (interrupted) |
|
1245 |
Thread.currentThread().interrupt(); |
|
1246 |
return remainingNanos; |
|
1247 |
} |
|
1248 |
||
1249 |
/** |
|
1250 |
* Returns the socket protocol family. |
|
1251 |
*/ |
|
1252 |
private static ProtocolFamily family() { |
|
1253 |
if (Net.isIPv6Available()) { |
|
1254 |
return StandardProtocolFamily.INET6; |
|
1255 |
} else { |
|
1256 |
return StandardProtocolFamily.INET; |
|
1257 |
} |
|
1258 |
} |
|
1259 |
} |