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| 1 /* | |
| 2 * Licensed to the Apache Software Foundation (ASF) under one or more | |
| 3 * contributor license agreements. See the NOTICE file distributed with | |
| 4 * this work for additional information regarding copyright ownership. | |
| 5 * The ASF licenses this file to You under the Apache License, Version 2.0 | |
| 6 * (the "License"); you may not use this file except in compliance with | |
| 7 * the License. You may obtain a copy of the License at | |
| 8 * | |
| 9 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 * | |
| 11 * Unless required by applicable law or agreed to in writing, software | |
| 12 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 * See the License for the specific language governing permissions and | |
| 15 * limitations under the License. | |
| 16 */ | |
| 17 package org.apache.tomcat.jni.socket; | |
| 18 | |
| 19 import java.io.IOException; | |
| 20 import java.net.InetSocketAddress; | |
| 21 import java.util.ArrayList; | |
| 22 import java.util.HashMap; | |
| 23 import java.util.List; | |
| 24 import java.util.Map; | |
| 25 import java.util.concurrent.BlockingQueue; | |
| 26 import java.util.concurrent.Executor; | |
| 27 import java.util.concurrent.ExecutorService; | |
| 28 import java.util.concurrent.Executors; | |
| 29 import java.util.concurrent.LinkedBlockingQueue; | |
| 30 import java.util.concurrent.RejectedExecutionHandler; | |
| 31 import java.util.concurrent.ThreadFactory; | |
| 32 import java.util.concurrent.ThreadPoolExecutor; | |
| 33 import java.util.concurrent.TimeUnit; | |
| 34 import java.util.concurrent.atomic.AtomicBoolean; | |
| 35 import java.util.concurrent.atomic.AtomicInteger; | |
| 36 import java.util.concurrent.atomic.AtomicLong; | |
| 37 import java.util.logging.Level; | |
| 38 import java.util.logging.Logger; | |
| 39 | |
| 40 import org.apache.tomcat.jni.Address; | |
| 41 import org.apache.tomcat.jni.Error; | |
| 42 import org.apache.tomcat.jni.Library; | |
| 43 import org.apache.tomcat.jni.OS; | |
| 44 import org.apache.tomcat.jni.Poll; | |
| 45 import org.apache.tomcat.jni.Pool; | |
| 46 import org.apache.tomcat.jni.SSL; | |
| 47 import org.apache.tomcat.jni.SSLContext; | |
| 48 import org.apache.tomcat.jni.SSLExt; | |
| 49 import org.apache.tomcat.jni.Socket; | |
| 50 import org.apache.tomcat.jni.Status; | |
| 51 | |
| 52 public class AprSocketContext { | |
| 53 /** | |
| 54 * Called when a chunk of data is sent or received. This is very low | |
| 55 * level, used mostly for debugging or stats. | |
| 56 */ | |
| 57 public static interface RawDataHandler { | |
| 58 public void rawData(AprSocket ch, boolean input, byte[] data, int pos, | |
| 59 int len, int requested, boolean closed); | |
| 60 } | |
| 61 | |
| 62 /** | |
| 63 * Called in SSL mode after the handshake is completed. | |
| 64 * | |
| 65 * @see AprSocketContext#customVerification(TlsCertVerifier) | |
| 66 */ | |
| 67 public static interface TlsCertVerifier { | |
| 68 public void handshakeDone(AprSocket ch); | |
| 69 } | |
| 70 | |
| 71 /** | |
| 72 * Delegates loading of persistent info about a host - public certs, | |
| 73 * tickets, config, persistent info etc. | |
| 74 */ | |
| 75 public static interface HostInfoLoader { | |
| 76 public HostInfo getHostInfo(String name, int port, boolean ssl); | |
| 77 } | |
| 78 | |
| 79 private static final Logger log = Logger.getLogger("AprSocketCtx"); | |
| 80 | |
| 81 // If interrupt() or thread-safe poll update are not supported - the | |
| 82 // poll updates will happen after the poll() timeout. | |
| 83 // The poll timeout with interrupt/thread safe updates can be much higher/ | |
| 84 private static final int FALLBACK_POLL_TIME = 2000; | |
| 85 | |
| 86 // It seems to send the ticket, get server helo / ChangeCipherSpec, but than | |
| 87 // SSL3_GET_RECORD:decryption failed or bad record mac in s3_pkt.c:480: | |
| 88 // Either bug in openssl, or some combination of ciphers - needs more debugg
ing. | |
| 89 // ( this can save a roundtrip and CPU on TLS handshake ) | |
| 90 boolean USE_TICKETS = false; | |
| 91 | |
| 92 private final AprSocket END = new AprSocket(this); | |
| 93 | |
| 94 private static final AtomicInteger contextNumber = new AtomicInteger(); | |
| 95 private int contextId; | |
| 96 | |
| 97 private final AtomicInteger threadNumber = new AtomicInteger(); | |
| 98 | |
| 99 /** | |
| 100 * For now - single acceptor thread per connector. | |
| 101 */ | |
| 102 private AcceptorThread acceptor; | |
| 103 private AcceptorDispatchThread acceptorDispatch; | |
| 104 | |
| 105 // APR/JNI is thread safe | |
| 106 private boolean threadSafe = true; | |
| 107 | |
| 108 /** | |
| 109 * Pollers. | |
| 110 */ | |
| 111 private final List<AprPoller> pollers = new ArrayList<>(); | |
| 112 | |
| 113 // Set on all accepted or connected sockets. | |
| 114 // TODO: add the other properties | |
| 115 boolean tcpNoDelay = true; | |
| 116 | |
| 117 protected boolean running = true; | |
| 118 | |
| 119 protected boolean sslMode; | |
| 120 | |
| 121 // onSocket() will be called in accept thread. | |
| 122 // If false: use executor ( but that may choke the acceptor thread ) | |
| 123 private boolean nonBlockingAccept = false; | |
| 124 | |
| 125 private final BlockingQueue<AprSocket> acceptedQueue = | |
| 126 new LinkedBlockingQueue<>(); | |
| 127 | |
| 128 /** | |
| 129 * Root APR memory pool. | |
| 130 */ | |
| 131 private long rootPool = 0; | |
| 132 | |
| 133 /** | |
| 134 * SSL context. | |
| 135 */ | |
| 136 private volatile long sslCtx = 0; | |
| 137 | |
| 138 TlsCertVerifier tlsCertVerifier; | |
| 139 | |
| 140 // | |
| 141 final int connectTimeout = 20000; | |
| 142 final int defaultTimeout = 100000; | |
| 143 // TODO: Use this | |
| 144 final int keepAliveTimeout = 20000; | |
| 145 | |
| 146 final AtomicInteger open = new AtomicInteger(); | |
| 147 | |
| 148 /** | |
| 149 * Poll interval, in microseconds. If the platform doesn't support | |
| 150 * poll interrupt - it'll take this time to stop the poller. | |
| 151 * | |
| 152 */ | |
| 153 private int pollTime = 5 * 1000000; | |
| 154 | |
| 155 private HostInfoLoader hostInfoLoader; | |
| 156 | |
| 157 final RawDataHandler rawDataHandler = null; | |
| 158 | |
| 159 // TODO: do we need this here ? | |
| 160 private final Map<String, HostInfo> hosts = new HashMap<>(); | |
| 161 | |
| 162 private String certFile; | |
| 163 private String keyFile; | |
| 164 | |
| 165 private byte[] spdyNPN; | |
| 166 | |
| 167 private byte[] ticketKey; | |
| 168 | |
| 169 // For resolving DNS ( i.e. connect ), callbacks | |
| 170 private ExecutorService threadPool; | |
| 171 | |
| 172 // Separate executor for connect/handshakes | |
| 173 final ExecutorService connectExecutor; | |
| 174 | |
| 175 final boolean debugSSL = false; | |
| 176 private boolean debugPoll = false; | |
| 177 | |
| 178 private boolean deferAccept = false; | |
| 179 | |
| 180 private int backlog = 100; | |
| 181 | |
| 182 private boolean useSendfile; | |
| 183 | |
| 184 private int sslProtocol = SSL.SSL_PROTOCOL_TLSV1 | SSL.SSL_PROTOCOL_TLSV1_1
| SSL.SSL_PROTOCOL_TLSV1_2; | |
| 185 | |
| 186 /** | |
| 187 * Max time spent in a callback ( will be longer for blocking ) | |
| 188 */ | |
| 189 final AtomicLong maxHandlerTime = new AtomicLong(); | |
| 190 final AtomicLong totalHandlerTime = new AtomicLong(); | |
| 191 final AtomicLong handlerCount = new AtomicLong(); | |
| 192 | |
| 193 /** | |
| 194 * Total connections handled ( accepted or connected ). | |
| 195 */ | |
| 196 private final AtomicInteger connectionsCount = new AtomicInteger(); | |
| 197 | |
| 198 | |
| 199 public AprSocketContext() { | |
| 200 connectExecutor =new ThreadPoolExecutor(0, 64, 5, TimeUnit.SECONDS, | |
| 201 new LinkedBlockingQueue<Runnable>(), new RejectedExecutionHandle
r() { | |
| 202 @Override | |
| 203 public void rejectedExecution(Runnable r, | |
| 204 java.util.concurrent.ThreadPoolExecutor executor) { | |
| 205 AprSocket s = (AprSocket) r; | |
| 206 log.severe("Rejecting " + s); | |
| 207 s.reset(); | |
| 208 } | |
| 209 }); | |
| 210 contextId = contextNumber.incrementAndGet(); | |
| 211 } | |
| 212 | |
| 213 /** | |
| 214 * Poller thread count. | |
| 215 */ | |
| 216 private int pollerThreadCount = 4; | |
| 217 public void setPollerThreadCount(int pollerThreadCount) { this.pollerThreadC
ount = pollerThreadCount; } | |
| 218 public int getPollerThreadCount() { return pollerThreadCount; } | |
| 219 | |
| 220 // to test the limits - default should be lower | |
| 221 private int maxConnections = 64 * 1024; | |
| 222 public void setMaxconnections(int maxCon) { | |
| 223 this.maxConnections = maxCon; | |
| 224 } | |
| 225 | |
| 226 public void setBacklog(int backlog) { if (backlog > 0) this.backlog = backlo
g; } | |
| 227 public int getBacklog() { return backlog; } | |
| 228 | |
| 229 /** | |
| 230 * Defer accept. | |
| 231 */ | |
| 232 public void setDeferAccept(boolean deferAccept) { this.deferAccept = deferAc
cept; } | |
| 233 public boolean getDeferAccept() { return deferAccept; } | |
| 234 | |
| 235 /** | |
| 236 * For client: | |
| 237 * - ClientHello will include the npn extension ( the ID == 0x3374) | |
| 238 * - if ServerHello includes a list of protocols - select one | |
| 239 * - send it after ChangeCipherSpec and before Finish | |
| 240 * | |
| 241 * For server: | |
| 242 * - if ClientHello includes the npn extension | |
| 243 * -- will send this string as list of supported protocols in ServerHello | |
| 244 * - read the selection before Finish. | |
| 245 * @param npn | |
| 246 */ | |
| 247 public void setNpn(String npn) { | |
| 248 byte[] data = npn.getBytes(); | |
| 249 byte[] npnB = new byte[data.length + 2]; | |
| 250 | |
| 251 System.arraycopy(data, 0, npnB, 1, data.length); | |
| 252 npnB[0] = (byte) data.length; | |
| 253 npnB[npnB.length - 1] = 0; | |
| 254 spdyNPN = npnB; | |
| 255 | |
| 256 } | |
| 257 | |
| 258 public void setNpn(byte[] data) { | |
| 259 spdyNPN = data; | |
| 260 } | |
| 261 | |
| 262 public void setHostLoader(HostInfoLoader handler) { | |
| 263 this.hostInfoLoader = handler; | |
| 264 } | |
| 265 | |
| 266 public boolean isServer() { | |
| 267 return acceptor != null; | |
| 268 } | |
| 269 | |
| 270 protected Executor getExecutor() { | |
| 271 if (threadPool == null) { | |
| 272 threadPool = Executors.newCachedThreadPool(new ThreadFactory( ) { | |
| 273 @Override | |
| 274 public Thread newThread(Runnable r) { | |
| 275 Thread t = new Thread(r, "AprThread-" + contextId + "-" + | |
| 276 threadNumber.incrementAndGet()); | |
| 277 t.setDaemon(true); | |
| 278 return t; | |
| 279 } | |
| 280 }); | |
| 281 } | |
| 282 return threadPool; | |
| 283 } | |
| 284 | |
| 285 /** | |
| 286 * All accepted/connected sockets will start handshake automatically. | |
| 287 */ | |
| 288 public AprSocketContext setTls() { | |
| 289 this.sslMode = true; | |
| 290 return this; | |
| 291 } | |
| 292 | |
| 293 public void setTcpNoDelay(boolean b) { | |
| 294 tcpNoDelay = b; | |
| 295 } | |
| 296 | |
| 297 public void setSslProtocol(String protocol) { | |
| 298 protocol = protocol.trim(); | |
| 299 if ("SSLv2".equalsIgnoreCase(protocol)) { | |
| 300 sslProtocol = SSL.SSL_PROTOCOL_SSLV2; | |
| 301 } else if ("SSLv3".equalsIgnoreCase(protocol)) { | |
| 302 sslProtocol = SSL.SSL_PROTOCOL_SSLV3; | |
| 303 } else if ("TLSv1".equalsIgnoreCase(protocol)) { | |
| 304 sslProtocol = SSL.SSL_PROTOCOL_TLSV1; | |
| 305 } else if ("TLSv1.1".equalsIgnoreCase(protocol)) { | |
| 306 sslProtocol = SSL.SSL_PROTOCOL_TLSV1_1; | |
| 307 } else if ("TLSv1.2".equalsIgnoreCase(protocol)) { | |
| 308 sslProtocol = SSL.SSL_PROTOCOL_TLSV1_2; | |
| 309 } else if ("all".equalsIgnoreCase(protocol)) { | |
| 310 sslProtocol = SSL.SSL_PROTOCOL_ALL; | |
| 311 } | |
| 312 } | |
| 313 | |
| 314 public void setTicketKey(byte[] key48Bytes) { | |
| 315 if(key48Bytes.length != 48) { | |
| 316 throw new RuntimeException("Key must be 48 bytes"); | |
| 317 } | |
| 318 this.ticketKey = key48Bytes; | |
| 319 } | |
| 320 | |
| 321 public void customVerification(TlsCertVerifier verifier) { | |
| 322 tlsCertVerifier = verifier; | |
| 323 } | |
| 324 | |
| 325 // TODO: should have a separate method for switching to tls later. | |
| 326 /** | |
| 327 * Set certificate, will also enable TLS mode. | |
| 328 */ | |
| 329 public AprSocketContext setKeys(String certPemFile, String keyDerFile) { | |
| 330 this.sslMode = true; | |
| 331 setTls(); | |
| 332 certFile = certPemFile; | |
| 333 keyFile = keyDerFile; | |
| 334 return this; | |
| 335 } | |
| 336 | |
| 337 /** | |
| 338 * SSL cipher suite. | |
| 339 */ | |
| 340 private String SSLCipherSuite = "ALL"; | |
| 341 public String getSSLCipherSuite() { return SSLCipherSuite; } | |
| 342 public void setSSLCipherSuite(String SSLCipherSuite) { this.SSLCipherSuite =
SSLCipherSuite; } | |
| 343 | |
| 344 /** | |
| 345 * Override or use hostInfoLoader to implement persistent/memcache storage. | |
| 346 */ | |
| 347 public HostInfo getHostInfo(String host, int port, boolean ssl) { | |
| 348 if (hostInfoLoader != null) { | |
| 349 return hostInfoLoader.getHostInfo(host, port, ssl); | |
| 350 } | |
| 351 // Use local cache | |
| 352 String key = host + ":" + port; | |
| 353 HostInfo pi = hosts.get(key); | |
| 354 if (pi != null) { | |
| 355 return pi; | |
| 356 } | |
| 357 pi = new HostInfo(host, port, ssl); | |
| 358 hosts.put(key, pi); | |
| 359 return pi; | |
| 360 } | |
| 361 | |
| 362 protected void rawData(AprSocket ch, boolean inp, byte[] data, int pos, | |
| 363 int len, int requested, boolean closed) { | |
| 364 if (rawDataHandler != null) { | |
| 365 rawDataHandler.rawData(ch, inp, data, pos, len, requested, closed); | |
| 366 } | |
| 367 } | |
| 368 | |
| 369 public void listen(final int port) throws IOException { | |
| 370 if (acceptor != null) { | |
| 371 throw new IOException("Already accepting on " + acceptor.port); | |
| 372 } | |
| 373 if (sslMode && certFile == null) { | |
| 374 throw new IOException("Missing certificates for server"); | |
| 375 } | |
| 376 if (sslMode || !nonBlockingAccept) { | |
| 377 acceptorDispatch = new AcceptorDispatchThread(); | |
| 378 acceptorDispatch.setName("AprAcceptorDispatch-" + port); | |
| 379 acceptorDispatch.start(); | |
| 380 } | |
| 381 | |
| 382 acceptor = new AcceptorThread(port); | |
| 383 acceptor.prepare(); | |
| 384 acceptor.setName("AprAcceptor-" + port); | |
| 385 acceptor.start(); | |
| 386 | |
| 387 | |
| 388 } | |
| 389 | |
| 390 /** | |
| 391 * Get a socket for connectiong to host:port. | |
| 392 */ | |
| 393 public AprSocket socket(String host, int port, boolean ssl) { | |
| 394 HostInfo hi = getHostInfo(host, port, ssl); | |
| 395 return socket(hi); | |
| 396 } | |
| 397 | |
| 398 public AprSocket socket(HostInfo hi) { | |
| 399 AprSocket sock = newSocket(this); | |
| 400 sock.setHost(hi); | |
| 401 return sock; | |
| 402 } | |
| 403 | |
| 404 public AprSocket socket(long socket) { | |
| 405 AprSocket sock = newSocket(this); | |
| 406 // Tomcat doesn't set this | |
| 407 SSLExt.sslSetMode(socket, SSLExt.SSL_MODE_ENABLE_PARTIAL_WRITE | | |
| 408 SSLExt.SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER); | |
| 409 sock.setStatus(AprSocket.ACCEPTED); | |
| 410 sock.socket = socket; | |
| 411 return sock; | |
| 412 } | |
| 413 | |
| 414 | |
| 415 void destroySocket(AprSocket socket) { | |
| 416 // TODO: does it need to be done in io thread ? | |
| 417 synchronized (socket) { | |
| 418 if (socket.socket != 0) { | |
| 419 long s = socket.socket; | |
| 420 socket.socket = 0; | |
| 421 log.info("DESTROY: " + Long.toHexString(s)); | |
| 422 Socket.destroy(s); | |
| 423 } | |
| 424 } | |
| 425 } | |
| 426 | |
| 427 protected void connectBlocking(AprSocket apr) throws IOException { | |
| 428 try { | |
| 429 if (!running) { | |
| 430 throw new IOException("Stopped"); | |
| 431 } | |
| 432 HostInfo hi = apr.getHost(); | |
| 433 | |
| 434 long clientSockP; | |
| 435 synchronized (pollers) { | |
| 436 long socketpool = Pool.create(getRootPool()); | |
| 437 | |
| 438 int family = Socket.APR_INET; | |
| 439 | |
| 440 clientSockP = Socket.create(family, | |
| 441 Socket.SOCK_STREAM, | |
| 442 Socket.APR_PROTO_TCP, socketpool); // or rootPool ? | |
| 443 } | |
| 444 Socket.timeoutSet(clientSockP, connectTimeout * 1000); | |
| 445 if (OS.IS_UNIX) { | |
| 446 Socket.optSet(clientSockP, Socket.APR_SO_REUSEADDR, 1); | |
| 447 } | |
| 448 | |
| 449 Socket.optSet(clientSockP, Socket.APR_SO_KEEPALIVE, 1); | |
| 450 | |
| 451 // Blocking | |
| 452 // TODO: use socket pool | |
| 453 // TODO: cache it ( and TTL ) in hi | |
| 454 long inetAddress = Address.info(hi.host, Socket.APR_INET, | |
| 455 hi.port, 0, rootPool); | |
| 456 // this may take a long time - stop/destroy must wait | |
| 457 // at least connect timeout | |
| 458 int rc = Socket.connect(clientSockP, inetAddress); | |
| 459 | |
| 460 if (rc != 0) { | |
| 461 synchronized (pollers) { | |
| 462 Socket.close(clientSockP); | |
| 463 Socket.destroy(clientSockP); | |
| 464 } | |
| 465 /////Pool.destroy(socketpool); | |
| 466 throw new IOException("Socket.connect(): " + rc + " " + Error.st
rerror(rc) + " " + connectTimeout); | |
| 467 } | |
| 468 if (!running) { | |
| 469 throw new IOException("Stopped"); | |
| 470 } | |
| 471 | |
| 472 connectionsCount.incrementAndGet(); | |
| 473 if (tcpNoDelay) { | |
| 474 Socket.optSet(clientSockP, Socket.APR_TCP_NODELAY, 1); | |
| 475 } | |
| 476 | |
| 477 Socket.timeoutSet(clientSockP, defaultTimeout * 1000); | |
| 478 | |
| 479 apr.socket = clientSockP; | |
| 480 | |
| 481 apr.afterConnect(); | |
| 482 } catch (IOException e) { | |
| 483 apr.reset(); | |
| 484 throw e; | |
| 485 } catch (Throwable e) { | |
| 486 apr.reset(); | |
| 487 e.printStackTrace(); | |
| 488 throw new IOException(e); | |
| 489 } | |
| 490 } | |
| 491 | |
| 492 AprSocket newSocket(AprSocketContext context) { | |
| 493 return new AprSocket(context); | |
| 494 } | |
| 495 | |
| 496 /** | |
| 497 * To clean the pools - we could track if all channels are | |
| 498 * closed, but this seems simpler and safer. | |
| 499 */ | |
| 500 @Override | |
| 501 protected void finalize() throws Throwable { | |
| 502 if (rootPool != 0) { | |
| 503 log.warning(this + " GC without stop()"); | |
| 504 try { | |
| 505 stop(); | |
| 506 } catch (Exception e) { | |
| 507 //TODO Auto-generated catch block | |
| 508 e.printStackTrace(); | |
| 509 } | |
| 510 } | |
| 511 super.finalize(); | |
| 512 } | |
| 513 | |
| 514 | |
| 515 public void stop() { | |
| 516 synchronized (pollers) { | |
| 517 if (!running) { | |
| 518 return; | |
| 519 } | |
| 520 running = false; | |
| 521 } | |
| 522 | |
| 523 if (rootPool != 0) { | |
| 524 if (acceptor != null) { | |
| 525 try { | |
| 526 acceptor.unblock(); | |
| 527 acceptor.join(); | |
| 528 } catch (InterruptedException e) { | |
| 529 e.printStackTrace(); | |
| 530 } | |
| 531 } | |
| 532 if (acceptorDispatch != null) { | |
| 533 acceptedQueue.add(END); | |
| 534 try { | |
| 535 acceptorDispatch.join(); | |
| 536 } catch (InterruptedException e) { | |
| 537 e.printStackTrace(); | |
| 538 } | |
| 539 } | |
| 540 if (threadPool != null) { | |
| 541 threadPool.shutdownNow(); | |
| 542 } | |
| 543 | |
| 544 log.info("Stopping pollers " + contextId); | |
| 545 | |
| 546 while (true) { | |
| 547 AprPoller a; | |
| 548 synchronized (pollers) { | |
| 549 if (pollers.size() == 0) { | |
| 550 break; | |
| 551 } | |
| 552 a = pollers.remove(0); | |
| 553 } | |
| 554 a.interruptPoll(); | |
| 555 try { | |
| 556 a.join(); | |
| 557 log.info("Poller " + a.id + " done "); | |
| 558 } catch (InterruptedException e) { | |
| 559 e.printStackTrace(); | |
| 560 } | |
| 561 } | |
| 562 } | |
| 563 } | |
| 564 | |
| 565 | |
| 566 // Called when the last poller has been destroyed. | |
| 567 void destroy() { | |
| 568 synchronized (pollers) { | |
| 569 if (pollers.size() != 0) { | |
| 570 return; | |
| 571 } | |
| 572 | |
| 573 if (rootPool == 0) { | |
| 574 return; | |
| 575 } | |
| 576 log.info("Destroy root pool " + rootPool); | |
| 577 //Pool.destroy(rootPool); | |
| 578 //rootPool = 0; | |
| 579 } | |
| 580 } | |
| 581 | |
| 582 private static IOException noApr; | |
| 583 static { | |
| 584 | |
| 585 try { | |
| 586 Library.initialize(null); | |
| 587 SSL.initialize(null); | |
| 588 } catch (Exception e) { | |
| 589 noApr = new IOException("APR not present", e); | |
| 590 } | |
| 591 | |
| 592 } | |
| 593 | |
| 594 private long getRootPool() throws IOException { | |
| 595 if (rootPool == 0) { | |
| 596 if (noApr != null) { | |
| 597 throw noApr; | |
| 598 } | |
| 599 // Create the root APR memory pool | |
| 600 rootPool = Pool.create(0); | |
| 601 | |
| 602 // Adjust poller sizes | |
| 603 if ((OS.IS_WIN32 || OS.IS_WIN64) && (maxConnections > 1024)) { | |
| 604 // The maximum per poller to get reasonable performance is 1024 | |
| 605 pollerThreadCount = maxConnections / 1024; | |
| 606 // Adjust poller size so that it won't reach the limit | |
| 607 maxConnections = maxConnections - (maxConnections % 1024); | |
| 608 } | |
| 609 } | |
| 610 return rootPool; | |
| 611 } | |
| 612 | |
| 613 long getSslCtx() throws Exception { | |
| 614 if (sslCtx == 0) { | |
| 615 synchronized (AprSocketContext.class) { | |
| 616 if (sslCtx == 0) { | |
| 617 boolean serverMode = acceptor != null; | |
| 618 sslCtx = SSLContext.make(getRootPool(), | |
| 619 sslProtocol, | |
| 620 serverMode ? SSL.SSL_MODE_SERVER : SSL.SSL_MODE_CLIE
NT); | |
| 621 | |
| 622 | |
| 623 // SSL.SSL_OP_NO_SSLv3 | |
| 624 int opts = SSL.SSL_OP_NO_SSLv2 | | |
| 625 SSL.SSL_OP_SINGLE_DH_USE; | |
| 626 | |
| 627 if (!USE_TICKETS || serverMode && ticketKey == null) { | |
| 628 opts |= SSL.SSL_OP_NO_TICKET; | |
| 629 } | |
| 630 | |
| 631 SSLContext.setOptions(sslCtx, opts); | |
| 632 // Set revocation | |
| 633 // SSLContext.setCARevocation(sslContext, SSLCARevoca
tionFile, SSLCARevocationPath); | |
| 634 | |
| 635 // Client certificate verification - maybe make it option | |
| 636 try { | |
| 637 SSLContext.setCipherSuite(sslCtx, SSLCipherSuite); | |
| 638 | |
| 639 | |
| 640 if (serverMode) { | |
| 641 if (ticketKey != null) { | |
| 642 //SSLExt.setTicketKeys(sslCtx, ticketKey, ticket
Key.length); | |
| 643 } | |
| 644 if (certFile != null) { | |
| 645 boolean rc = SSLContext.setCertificate(sslCtx, | |
| 646 certFile, | |
| 647 keyFile, null, SSL.SSL_AIDX_DSA); | |
| 648 if (!rc) { | |
| 649 throw new IOException("Can't set keys"); | |
| 650 } | |
| 651 } | |
| 652 SSLContext.setVerify(sslCtx, SSL.SSL_CVERIFY_NONE, 1
0); | |
| 653 | |
| 654 if (spdyNPN != null) { | |
| 655 SSLExt.setNPN(sslCtx, spdyNPN, spdyNPN.length); | |
| 656 } | |
| 657 } else { | |
| 658 if (tlsCertVerifier != null) { | |
| 659 // NONE ? | |
| 660 SSLContext.setVerify(sslCtx, | |
| 661 SSL.SSL_CVERIFY_NONE, 10); | |
| 662 } else { | |
| 663 SSLContext.setCACertificate(sslCtx, | |
| 664 "/etc/ssl/certs/ca-certificates.crt", | |
| 665 "/etc/ssl/certs"); | |
| 666 SSLContext.setVerify(sslCtx, | |
| 667 SSL.SSL_CVERIFY_REQUIRE, 10); | |
| 668 } | |
| 669 | |
| 670 if (spdyNPN != null) { | |
| 671 SSLExt.setNPN(sslCtx, spdyNPN, spdyNPN.length); | |
| 672 } | |
| 673 } | |
| 674 } catch (IOException e) { | |
| 675 throw e; | |
| 676 } catch (Exception e) { | |
| 677 throw new IOException(e); | |
| 678 } | |
| 679 } | |
| 680 // TODO: try release buffers | |
| 681 } | |
| 682 } | |
| 683 return sslCtx; | |
| 684 } | |
| 685 | |
| 686 void findPollerAndAdd(AprSocket ch) throws IOException { | |
| 687 if (ch.poller != null) { | |
| 688 ch.poller.requestUpdate(ch); | |
| 689 return; | |
| 690 } | |
| 691 assignPoller(ch); | |
| 692 } | |
| 693 | |
| 694 void assignPoller(AprSocket ch) throws IOException { | |
| 695 AprPoller target = null; | |
| 696 synchronized (pollers) { | |
| 697 // Make sure we have min number of pollers | |
| 698 int needPollers = pollerThreadCount - pollers.size(); | |
| 699 if (needPollers > 0) { | |
| 700 for (int i = needPollers; i > 0; i--) { | |
| 701 pollers.add(allocatePoller()); | |
| 702 } | |
| 703 } | |
| 704 int max = 0; | |
| 705 for (AprPoller poller: pollers) { | |
| 706 int rem = poller.remaining(); | |
| 707 if (rem > max) { | |
| 708 target = poller; | |
| 709 max = rem; | |
| 710 } | |
| 711 } | |
| 712 } | |
| 713 if (target != null && target.add(ch)) { | |
| 714 return; | |
| 715 } | |
| 716 | |
| 717 // can't be added - add a new poller | |
| 718 synchronized (pollers) { | |
| 719 AprPoller poller = allocatePoller(); | |
| 720 poller.add(ch); | |
| 721 pollers.add(poller); | |
| 722 } | |
| 723 } | |
| 724 | |
| 725 /** | |
| 726 * Called on each accepted socket (for servers) or after connection (client) | |
| 727 * after handshake. | |
| 728 */ | |
| 729 protected void onSocket(@SuppressWarnings("unused") AprSocket s) { | |
| 730 // Defaults to NO-OP. Parameter is used by sub-classes. | |
| 731 } | |
| 732 | |
| 733 private class AcceptorThread extends Thread { | |
| 734 private final int port; | |
| 735 private long serverSockPool = 0; | |
| 736 private long serverSock = 0; | |
| 737 | |
| 738 private long inetAddress; | |
| 739 | |
| 740 AcceptorThread(int port) { | |
| 741 this.port = port; | |
| 742 setDaemon(true); | |
| 743 } | |
| 744 | |
| 745 void prepare() throws IOException { | |
| 746 try { | |
| 747 // Create the pool for the server socket | |
| 748 serverSockPool = Pool.create(getRootPool()); | |
| 749 | |
| 750 int family = Socket.APR_INET; | |
| 751 inetAddress = | |
| 752 Address.info(null, family, port, 0, serverSockPool); | |
| 753 | |
| 754 // Create the APR server socket | |
| 755 serverSock = Socket.create(family, | |
| 756 Socket.SOCK_STREAM, | |
| 757 Socket.APR_PROTO_TCP, serverSockPool); | |
| 758 | |
| 759 if (OS.IS_UNIX) { | |
| 760 Socket.optSet(serverSock, Socket.APR_SO_REUSEADDR, 1); | |
| 761 } | |
| 762 // Deal with the firewalls that tend to drop the inactive socket
s | |
| 763 Socket.optSet(serverSock, Socket.APR_SO_KEEPALIVE, 1); | |
| 764 // Bind the server socket | |
| 765 int ret = Socket.bind(serverSock, inetAddress); | |
| 766 if (ret != 0) { | |
| 767 throw new IOException("Socket.bind " + ret + " " + | |
| 768 Error.strerror(ret) + " port=" + port); | |
| 769 } | |
| 770 // Start listening on the server socket | |
| 771 ret = Socket.listen(serverSock, backlog ); | |
| 772 if (ret != 0) { | |
| 773 throw new IOException("endpoint.init.listen" | |
| 774 + ret + " " + Error.strerror(ret)); | |
| 775 } | |
| 776 if (OS.IS_WIN32 || OS.IS_WIN64) { | |
| 777 // On Windows set the reuseaddr flag after the bind/listen | |
| 778 Socket.optSet(serverSock, Socket.APR_SO_REUSEADDR, 1); | |
| 779 } | |
| 780 | |
| 781 // Sendfile usage on systems which don't support it cause major
problems | |
| 782 if (useSendfile && !Library.APR_HAS_SENDFILE) { | |
| 783 useSendfile = false; | |
| 784 } | |
| 785 | |
| 786 // Delay accepting of new connections until data is available | |
| 787 // Only Linux kernels 2.4 + have that implemented | |
| 788 // on other platforms this call is noop and will return APR_ENOT
IMPL. | |
| 789 if (deferAccept) { | |
| 790 if (Socket.optSet(serverSock, Socket.APR_TCP_DEFER_ACCEPT, 1
) == Status.APR_ENOTIMPL) { | |
| 791 deferAccept = false; | |
| 792 } | |
| 793 } | |
| 794 } catch (Throwable t) { | |
| 795 throw new IOException(t); | |
| 796 } | |
| 797 } | |
| 798 | |
| 799 void unblock() { | |
| 800 try (java.net.Socket sock = new java.net.Socket()) { | |
| 801 // Easiest ( maybe safest ) way to interrupt accept | |
| 802 // we could have it in non-blocking mode, etc | |
| 803 sock.connect(new InetSocketAddress("127.0.0.1", port)); | |
| 804 } catch (Exception ex) { | |
| 805 // ignore - the acceptor may have shut down by itself. | |
| 806 } | |
| 807 } | |
| 808 | |
| 809 @Override | |
| 810 public void run() { | |
| 811 while (running) { | |
| 812 try { | |
| 813 // each socket has a pool. | |
| 814 final AprSocket ch = newSocket(AprSocketContext.this); | |
| 815 ch.setStatus(AprSocket.ACCEPTED); | |
| 816 | |
| 817 ch.socket = Socket.accept(serverSock); | |
| 818 if (!running) { | |
| 819 break; | |
| 820 } | |
| 821 connectionsCount.incrementAndGet(); | |
| 822 if (connectionsCount.get() % 1000 == 0) { | |
| 823 System.err.println("Accepted: " + connectionsCount.get()
); | |
| 824 } | |
| 825 | |
| 826 if (nonBlockingAccept && !sslMode) { | |
| 827 ch.setStatus(AprSocket.CONNECTED); | |
| 828 // TODO: SSL really needs a thread. | |
| 829 onSocket(ch); | |
| 830 } else { | |
| 831 acceptedQueue.add(ch); | |
| 832 } | |
| 833 } catch (Throwable e) { | |
| 834 e.printStackTrace(); | |
| 835 } | |
| 836 } | |
| 837 Socket.close(serverSock); | |
| 838 } | |
| 839 } | |
| 840 | |
| 841 private class AcceptorDispatchThread extends Thread { | |
| 842 | |
| 843 AcceptorDispatchThread() { | |
| 844 setDaemon(true); | |
| 845 } | |
| 846 | |
| 847 @Override | |
| 848 public void run() { | |
| 849 while(running) { | |
| 850 try { | |
| 851 AprSocket ch = acceptedQueue.take(); | |
| 852 if (ch == END) { | |
| 853 return; | |
| 854 } | |
| 855 connectExecutor.execute(ch); | |
| 856 } catch (InterruptedException e) { | |
| 857 } | |
| 858 } | |
| 859 } | |
| 860 } | |
| 861 | |
| 862 /** | |
| 863 * Create the poller. With some versions of APR, the maximum poller size wil
l | |
| 864 * be 62 (recompiling APR is necessary to remove this limitation). | |
| 865 * @throws IOException | |
| 866 */ | |
| 867 AprPoller allocatePoller() throws IOException { | |
| 868 long pool = Pool.create(getRootPool()); | |
| 869 int size = maxConnections / pollerThreadCount; | |
| 870 | |
| 871 long serverPollset = allocatePoller(size, pool); | |
| 872 | |
| 873 if (serverPollset == 0 && size > 1024) { | |
| 874 log.severe("Falling back to 1024-sized poll, won't scale"); | |
| 875 size = 1024; | |
| 876 serverPollset = allocatePoller(size, pool); | |
| 877 } | |
| 878 if (serverPollset == 0) { | |
| 879 log.severe("Falling back to 62-sized poll, won't scale"); | |
| 880 size = 62; | |
| 881 serverPollset = allocatePoller(size, pool); | |
| 882 } | |
| 883 | |
| 884 AprPoller res = new AprPoller(); | |
| 885 res.pool = pool; | |
| 886 res.serverPollset = serverPollset; | |
| 887 res.desc = new long[size * 2]; | |
| 888 res.size = size; | |
| 889 res.id = contextId++; | |
| 890 res.setDaemon(true); | |
| 891 res.setName("AprPoller-" + res.id); | |
| 892 res.start(); | |
| 893 if (debugPoll && !sizeLogged) { | |
| 894 sizeLogged = true; | |
| 895 log.info("Poller size " + (res.desc.length / 2)); | |
| 896 } | |
| 897 return res; | |
| 898 } | |
| 899 | |
| 900 // Removed the 'thread safe' updates for now, to simplify the code | |
| 901 // last test shows a small improvement, can switch later. | |
| 902 private static boolean sizeLogged = false; | |
| 903 | |
| 904 protected long allocatePoller(int size, long pool) { | |
| 905 int flag = threadSafe ? Poll.APR_POLLSET_THREADSAFE: 0; | |
| 906 for (int i = 0; i < 2; i++) { | |
| 907 try { | |
| 908 // timeout must be -1 - or ttl will take effect, strange result
s. | |
| 909 return Poll.create(size, pool, flag, -1); | |
| 910 } catch (Error e) { | |
| 911 e.printStackTrace(); | |
| 912 if (Status.APR_STATUS_IS_EINVAL(e.getError())) { | |
| 913 log.info(" endpoint.poll.limitedpollsize " + size); | |
| 914 return 0; | |
| 915 } else if (Status.APR_STATUS_IS_ENOTIMPL(e.getError())) { | |
| 916 // thread safe not supported | |
| 917 log.severe("THREAD SAFE NOT SUPPORTED" + e); | |
| 918 threadSafe = false; | |
| 919 // try again without the flags | |
| 920 continue; | |
| 921 } else { | |
| 922 log.severe("endpoint.poll.initfail" + e); | |
| 923 return 0; | |
| 924 } | |
| 925 } | |
| 926 } | |
| 927 log.severe("Unexpected ENOTIMPL with flag==0"); | |
| 928 return 0; | |
| 929 } | |
| 930 | |
| 931 class AprPoller extends Thread { | |
| 932 | |
| 933 private int id; | |
| 934 private int size; | |
| 935 private long serverPollset = 0; | |
| 936 private long pool = 0; | |
| 937 private long[] desc; | |
| 938 | |
| 939 private long lastPoll; | |
| 940 private long lastPollTime; | |
| 941 private final AtomicBoolean inPoll = new AtomicBoolean(false); | |
| 942 | |
| 943 // Should be replaced with socket data. | |
| 944 // used only to lookup by socket | |
| 945 private final Map<Long, AprSocket> channels = new HashMap<>(); | |
| 946 | |
| 947 // Active + pending, must be < desc.length / 2 | |
| 948 // The channel will also have poller=this when active or pending | |
| 949 // How many sockets have poller == this | |
| 950 private final AtomicInteger keepAliveCount = new AtomicInteger(); | |
| 951 // Tracks desc, how many sockets are actively polled | |
| 952 private final AtomicInteger polledCount = new AtomicInteger(); | |
| 953 | |
| 954 private final AtomicInteger pollCount = new AtomicInteger(); | |
| 955 | |
| 956 private final List<AprSocket> updates = new ArrayList<>(); | |
| 957 | |
| 958 @Override | |
| 959 public void run() { | |
| 960 if (!running) { | |
| 961 return; | |
| 962 } | |
| 963 if (debugPoll) { | |
| 964 log.info("Starting poller " + id + " " + (isServer() ? "SRV ": "
CLI ")); | |
| 965 } | |
| 966 long t0 = System.currentTimeMillis(); | |
| 967 while (running) { | |
| 968 try { | |
| 969 updates(); | |
| 970 | |
| 971 // Pool for the specified interval. Remove signaled sockets | |
| 972 synchronized (this) { | |
| 973 inPoll.set(true); | |
| 974 } | |
| 975 // if updates are added after updates and poll - interrupt w
ill have still | |
| 976 // work | |
| 977 | |
| 978 int rv = Poll.poll(serverPollset, pollTime, desc, true); | |
| 979 synchronized (this) { | |
| 980 inPoll.set(false); | |
| 981 if (!running) { | |
| 982 break; | |
| 983 } | |
| 984 } | |
| 985 | |
| 986 pollCount.incrementAndGet(); | |
| 987 lastPoll = System.currentTimeMillis(); | |
| 988 lastPollTime = lastPoll - t0; | |
| 989 | |
| 990 if (rv > 0) { | |
| 991 if (debugPoll) { | |
| 992 log.info(" Poll() id=" + id + " rv=" + rv + " keepAl
iveCount=" + keepAliveCount + | |
| 993 " polled = " + polledCount.get() | |
| 994 + " time=" + lastPollTime); | |
| 995 } | |
| 996 polledCount.addAndGet(-rv); | |
| 997 for (int pollIdx = 0; pollIdx < rv; pollIdx++) { | |
| 998 long sock = desc[pollIdx * 2 + 1]; | |
| 999 AprSocket ch; | |
| 1000 boolean blocking = false; | |
| 1001 | |
| 1002 synchronized (channels) { | |
| 1003 ch = channels.get(Long.valueOf(sock)); | |
| 1004 if (ch != null) { | |
| 1005 blocking = ch.isBlocking(); | |
| 1006 } else { | |
| 1007 log.severe("Polled socket not found !!!!!" +
Long.toHexString(sock)); | |
| 1008 // TODO: destroy/close the raw socket | |
| 1009 continue; | |
| 1010 } | |
| 1011 } | |
| 1012 // was removed from polling | |
| 1013 ch.clearStatus(AprSocket.POLL); | |
| 1014 | |
| 1015 // We just removed it ( see last param to poll()). | |
| 1016 // Check for failed sockets and hand this socket off
to a worker | |
| 1017 long mask = desc[pollIdx * 2]; | |
| 1018 | |
| 1019 boolean err = ((mask & Poll.APR_POLLERR) == Poll.APR
_POLLERR); | |
| 1020 boolean nval = ((mask & Poll.APR_POLLNVAL) != 0); | |
| 1021 if (err || nval) { | |
| 1022 System.err.println("ERR " + err + " NVAL " + nva
l); | |
| 1023 } | |
| 1024 | |
| 1025 boolean out = (mask & Poll.APR_POLLOUT) == Poll.APR_
POLLOUT; | |
| 1026 boolean in = (mask & Poll.APR_POLLIN) == Poll.APR_PO
LLIN; | |
| 1027 if (debugPoll) { | |
| 1028 log.info(" Poll channel: " + Long.toHexString(ma
sk) + | |
| 1029 (out ? " OUT" :"") + | |
| 1030 (in ? " IN": "") + | |
| 1031 (err ? " ERR" : "") + | |
| 1032 " Ch: " + ch); | |
| 1033 } | |
| 1034 | |
| 1035 // will be set again in process(), if all read/write
is done | |
| 1036 ch.clearStatus(AprSocket.POLLOUT); | |
| 1037 ch.clearStatus(AprSocket.POLLIN); | |
| 1038 | |
| 1039 // try to send if needed | |
| 1040 if (blocking) { | |
| 1041 synchronized (ch) { | |
| 1042 ch.notifyAll(); | |
| 1043 } | |
| 1044 getExecutor().execute(ch); | |
| 1045 } else { | |
| 1046 ((AprSocketContext.NonBlockingPollHandler) ch.ha
ndler).process(ch, in, out, false); | |
| 1047 | |
| 1048 // Update polling for the channel (in IO thread,
safe) | |
| 1049 updateIOThread(ch); | |
| 1050 } | |
| 1051 } | |
| 1052 } else if (rv < 0) { | |
| 1053 int errn = -rv; | |
| 1054 if (errn == Status.TIMEUP) { | |
| 1055 // to or interrupt | |
| 1056 // if (debugPoll) { | |
| 1057 // log.info(" Poll() timeup" + " keepAliveCount="
+ keepAliveCount + | |
| 1058 // " polled = " + polledCount.get() | |
| 1059 // + " time=" + lastPollTime); | |
| 1060 // } | |
| 1061 } else if (errn == Status.EINTR) { | |
| 1062 // interrupt - no need to log | |
| 1063 } else { | |
| 1064 if (debugPoll) { | |
| 1065 log.info(" Poll() rv=" + rv + " keepAliveCount="
+ keepAliveCount + | |
| 1066 " polled = " + polledCount.get() | |
| 1067 + " time=" + lastPollTime); | |
| 1068 } | |
| 1069 /* Any non timeup or interrupted error is critical *
/ | |
| 1070 if (errn > Status.APR_OS_START_USERERR) { | |
| 1071 errn -= Status.APR_OS_START_USERERR; | |
| 1072 } | |
| 1073 log.severe("endpoint.poll.fail " + errn + " " + Erro
r.strerror(errn)); | |
| 1074 // Handle poll critical failure | |
| 1075 synchronized (this) { | |
| 1076 destroyPoller(); // will close all sockets | |
| 1077 } | |
| 1078 continue; | |
| 1079 } | |
| 1080 } | |
| 1081 // TODO: timeouts | |
| 1082 } catch (Throwable t) { | |
| 1083 log.log(Level.SEVERE, "endpoint.poll.error", t); | |
| 1084 } | |
| 1085 | |
| 1086 } | |
| 1087 if (!running) { | |
| 1088 destroyPoller(); | |
| 1089 } | |
| 1090 } | |
| 1091 | |
| 1092 /** | |
| 1093 * Destroy the poller. | |
| 1094 */ | |
| 1095 protected void destroyPoller() { | |
| 1096 synchronized (pollers) { | |
| 1097 pollers.remove(this); | |
| 1098 } | |
| 1099 log.info("Poller stopped after cnt=" + | |
| 1100 pollCount.get() + | |
| 1101 " sockets=" + channels.size() + | |
| 1102 " lastPoll=" + lastPoll); | |
| 1103 | |
| 1104 // Close all sockets | |
| 1105 synchronized (this) { | |
| 1106 if (serverPollset == 0) { | |
| 1107 return; | |
| 1108 } | |
| 1109 | |
| 1110 // for (AprSocket ch: channels.values()) { | |
| 1111 // ch.poller = null; | |
| 1112 // ch.reset(); | |
| 1113 // } | |
| 1114 keepAliveCount.set(0); | |
| 1115 log.warning("Destroy pollset"); | |
| 1116 //serverPollset = 0; | |
| 1117 } | |
| 1118 Pool.destroy(pool); | |
| 1119 pool = 0; | |
| 1120 synchronized (pollers) { | |
| 1121 // Now we can destroy the root pool | |
| 1122 if (pollers.size() == 0 && !running) { | |
| 1123 log.info("Destroy server context"); | |
| 1124 // AprSocketContext.this.destroy(); | |
| 1125 } | |
| 1126 } | |
| 1127 } | |
| 1128 | |
| 1129 /** | |
| 1130 * Called only in poller thread, only used if not thread safe | |
| 1131 * @throws IOException | |
| 1132 */ | |
| 1133 protected void updates() throws IOException { | |
| 1134 synchronized (this) { | |
| 1135 for (AprSocket up: updates) { | |
| 1136 updateIOThread(up); | |
| 1137 } | |
| 1138 updates.clear(); | |
| 1139 } | |
| 1140 } | |
| 1141 | |
| 1142 void interruptPoll() { | |
| 1143 try { | |
| 1144 int rc = Status.APR_SUCCESS; | |
| 1145 synchronized (this) { | |
| 1146 if (serverPollset != 0) { | |
| 1147 rc = Poll.interrupt(serverPollset); | |
| 1148 } else { | |
| 1149 log.severe("Interrupt with closed pollset"); | |
| 1150 } | |
| 1151 } | |
| 1152 if (rc != Status.APR_SUCCESS) { | |
| 1153 log.severe("Failed interrupt and not thread safe"); | |
| 1154 } | |
| 1155 } catch (Throwable t) { | |
| 1156 t.printStackTrace(); | |
| 1157 if (pollTime > FALLBACK_POLL_TIME) { | |
| 1158 pollTime = FALLBACK_POLL_TIME; | |
| 1159 } | |
| 1160 } | |
| 1161 } | |
| 1162 | |
| 1163 | |
| 1164 int remaining() { | |
| 1165 synchronized (channels) { | |
| 1166 return (desc.length - channels.size() * 2); | |
| 1167 } | |
| 1168 } | |
| 1169 | |
| 1170 | |
| 1171 | |
| 1172 /** | |
| 1173 * Called from any thread, return true if we could add it | |
| 1174 * to pending. | |
| 1175 */ | |
| 1176 boolean add(AprSocket ch) throws IOException { | |
| 1177 synchronized (this) { | |
| 1178 if (!running) { | |
| 1179 return false; | |
| 1180 } | |
| 1181 if (keepAliveCount.get() >= size) { | |
| 1182 return false; | |
| 1183 } | |
| 1184 keepAliveCount.incrementAndGet(); | |
| 1185 ch.poller = this; | |
| 1186 } | |
| 1187 | |
| 1188 requestUpdate(ch); | |
| 1189 | |
| 1190 return true; | |
| 1191 } | |
| 1192 | |
| 1193 /** | |
| 1194 * May be called outside of IOThread. | |
| 1195 */ | |
| 1196 protected void requestUpdate(AprSocket ch) throws IOException { | |
| 1197 synchronized (this) { | |
| 1198 if (!running) { | |
| 1199 return; | |
| 1200 } | |
| 1201 } | |
| 1202 if (isPollerThread()) { | |
| 1203 updateIOThread(ch); | |
| 1204 } else { | |
| 1205 synchronized (this) { | |
| 1206 if (!updates.contains(ch)) { | |
| 1207 updates.add(ch); | |
| 1208 } | |
| 1209 interruptPoll(); | |
| 1210 } | |
| 1211 if (debugPoll) { | |
| 1212 log.info("Poll: requestUpdate " + id + " " + ch); | |
| 1213 } | |
| 1214 } | |
| 1215 } | |
| 1216 | |
| 1217 private void updateIOThread(AprSocket ch) throws IOException { | |
| 1218 if (!running || ch.socket == 0) { | |
| 1219 return; | |
| 1220 } | |
| 1221 // called from IO thread, either in 'updates' or after | |
| 1222 // poll. | |
| 1223 //synchronized (ch) | |
| 1224 boolean polling = ch.checkPreConnect(AprSocket.POLL); | |
| 1225 | |
| 1226 int requested = ch.requestedPolling(); | |
| 1227 if (requested == 0) { | |
| 1228 if (polling) { | |
| 1229 removeSafe(ch); | |
| 1230 } | |
| 1231 if (ch.isClosed()) { | |
| 1232 synchronized (channels) { | |
| 1233 ch.poller = null; | |
| 1234 channels.remove(Long.valueOf(ch.socket)); | |
| 1235 } | |
| 1236 keepAliveCount.decrementAndGet(); | |
| 1237 ch.reset(); | |
| 1238 } | |
| 1239 } else { | |
| 1240 if (polling) { | |
| 1241 removeSafe(ch); | |
| 1242 } | |
| 1243 // will close if error | |
| 1244 pollAdd(ch, requested); | |
| 1245 } | |
| 1246 if (debugPoll) { | |
| 1247 log.info("Poll: updated=" + id + " " + ch); | |
| 1248 } | |
| 1249 } | |
| 1250 | |
| 1251 /** | |
| 1252 * Called only from IO thread | |
| 1253 */ | |
| 1254 private void pollAdd(AprSocket up, int req) throws IOException { | |
| 1255 boolean failed = false; | |
| 1256 int rv; | |
| 1257 synchronized (channels) { | |
| 1258 if (up.isClosed()) { | |
| 1259 return; | |
| 1260 } | |
| 1261 rv = Poll.add(serverPollset, up.socket, req); | |
| 1262 if (rv != Status.APR_SUCCESS) { | |
| 1263 up.poller = null; | |
| 1264 keepAliveCount.decrementAndGet(); | |
| 1265 failed = true; | |
| 1266 } else { | |
| 1267 polledCount.incrementAndGet(); | |
| 1268 channels.put(Long.valueOf(up.socket), up); | |
| 1269 up.setStatus(AprSocket.POLL); | |
| 1270 } | |
| 1271 } | |
| 1272 if (failed) { | |
| 1273 up.reset(); | |
| 1274 throw new IOException("poll add error " + rv + " " + up + " " +
Error.strerror(rv)); | |
| 1275 } | |
| 1276 } | |
| 1277 | |
| 1278 /** | |
| 1279 * Called only from IO thread. Remove from Poll and channels, | |
| 1280 * set POLL bit to false. | |
| 1281 */ | |
| 1282 private void removeSafe(AprSocket up) { | |
| 1283 int rv = Status.APR_EGENERAL; | |
| 1284 if (running && serverPollset != 0 && up.socket != 0 | |
| 1285 && !up.isClosed()) { | |
| 1286 rv = Poll.remove(serverPollset, up.socket); | |
| 1287 } | |
| 1288 up.clearStatus(AprSocket.POLL); | |
| 1289 | |
| 1290 if (rv != Status.APR_SUCCESS) { | |
| 1291 log.severe("poll remove error " + Error.strerror(rv) + " " + up
); | |
| 1292 } else { | |
| 1293 polledCount.decrementAndGet(); | |
| 1294 } | |
| 1295 } | |
| 1296 | |
| 1297 | |
| 1298 public boolean isPollerThread() { | |
| 1299 return Thread.currentThread() == this; | |
| 1300 } | |
| 1301 | |
| 1302 } | |
| 1303 | |
| 1304 /** | |
| 1305 * Callback for poll events, will be invoked in a thread pool. | |
| 1306 * | |
| 1307 */ | |
| 1308 public static interface BlockingPollHandler { | |
| 1309 | |
| 1310 /** | |
| 1311 * Called when the socket has been polled for in, out or closed. | |
| 1312 * | |
| 1313 * | |
| 1314 */ | |
| 1315 public void process(AprSocket ch, boolean in, boolean out, boolean close
); | |
| 1316 | |
| 1317 | |
| 1318 /** | |
| 1319 * Called just before the socket is destroyed | |
| 1320 */ | |
| 1321 public void closed(AprSocket ch); | |
| 1322 } | |
| 1323 | |
| 1324 /** | |
| 1325 * Additional callbacks for non-blocking. | |
| 1326 * This can be much faster - but it's harder to code, should be used only | |
| 1327 * for low-level protocol implementation, proxies, etc. | |
| 1328 * | |
| 1329 * The model is restricted in many ways to avoid complexity and bugs: | |
| 1330 * | |
| 1331 * - read can only happen in the IO thread associated with the poller | |
| 1332 * - user doesn't control poll interest - it is set automatically based | |
| 1333 * on read/write results | |
| 1334 * - it is only possible to suspend read, for TCP flow control - also | |
| 1335 * only from the IO thread. Resume can happen from any thread. | |
| 1336 * - it is also possible to call write() from any thread | |
| 1337 */ | |
| 1338 public static interface NonBlockingPollHandler extends BlockingPollHandler { | |
| 1339 | |
| 1340 /** | |
| 1341 * Called after connection is established, in a thread pool. | |
| 1342 * Process will be called next. | |
| 1343 */ | |
| 1344 public void connected(AprSocket ch); | |
| 1345 | |
| 1346 /** | |
| 1347 * Before close, if an exception happens. | |
| 1348 */ | |
| 1349 public void error(AprSocket ch, Throwable t); | |
| 1350 } | |
| 1351 | |
| 1352 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2842333002:
Updated netty-tcnative to version 2.0.0.Final (Closed)
