| /* |
| * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.internal.net.http; |
| |
| import java.io.IOException; |
| import java.net.ConnectException; |
| import java.net.InetSocketAddress; |
| import java.net.StandardSocketOptions; |
| import java.nio.channels.SelectableChannel; |
| import java.nio.channels.SelectionKey; |
| import java.nio.channels.SocketChannel; |
| import java.security.AccessController; |
| import java.security.PrivilegedActionException; |
| import java.security.PrivilegedExceptionAction; |
| import java.time.Duration; |
| import java.util.concurrent.CompletableFuture; |
| import jdk.internal.net.http.common.FlowTube; |
| import jdk.internal.net.http.common.Log; |
| import jdk.internal.net.http.common.MinimalFuture; |
| import jdk.internal.net.http.common.Utils; |
| |
| /** |
| * Plain raw TCP connection direct to destination. |
| * The connection operates in asynchronous non-blocking mode. |
| * All reads and writes are done non-blocking. |
| */ |
| class PlainHttpConnection extends HttpConnection { |
| |
| private final Object reading = new Object(); |
| protected final SocketChannel chan; |
| private final SocketTube tube; // need SocketTube to call signalClosed(). |
| private final PlainHttpPublisher writePublisher = new PlainHttpPublisher(reading); |
| private volatile boolean connected; |
| private boolean closed; |
| private volatile ConnectTimerEvent connectTimerEvent; // may be null |
| |
| // should be volatile to provide proper synchronization(visibility) action |
| |
| /** |
| * Returns a ConnectTimerEvent iff there is a connect timeout duration, |
| * otherwise null. |
| */ |
| private ConnectTimerEvent newConnectTimer(Exchange<?> exchange, |
| CompletableFuture<Void> cf) { |
| Duration duration = exchange.remainingConnectTimeout().orElse(null); |
| if (duration != null) { |
| ConnectTimerEvent cte = new ConnectTimerEvent(duration, exchange, cf); |
| return cte; |
| } |
| return null; |
| } |
| |
| final class ConnectTimerEvent extends TimeoutEvent { |
| private final CompletableFuture<Void> cf; |
| private final Exchange<?> exchange; |
| |
| ConnectTimerEvent(Duration duration, |
| Exchange<?> exchange, |
| CompletableFuture<Void> cf) { |
| super(duration); |
| this.exchange = exchange; |
| this.cf = cf; |
| } |
| |
| @Override |
| public void handle() { |
| if (debug.on()) { |
| debug.log("HTTP connect timed out"); |
| } |
| ConnectException ce = new ConnectException("HTTP connect timed out"); |
| exchange.multi.cancel(ce); |
| client().theExecutor().execute(() -> cf.completeExceptionally(ce)); |
| } |
| |
| @Override |
| public String toString() { |
| return "ConnectTimerEvent, " + super.toString(); |
| } |
| } |
| |
| final class ConnectEvent extends AsyncEvent { |
| private final CompletableFuture<Void> cf; |
| |
| ConnectEvent(CompletableFuture<Void> cf) { |
| this.cf = cf; |
| } |
| |
| @Override |
| public SelectableChannel channel() { |
| return chan; |
| } |
| |
| @Override |
| public int interestOps() { |
| return SelectionKey.OP_CONNECT; |
| } |
| |
| @Override |
| public void handle() { |
| try { |
| assert !connected : "Already connected"; |
| assert !chan.isBlocking() : "Unexpected blocking channel"; |
| if (debug.on()) |
| debug.log("ConnectEvent: finishing connect"); |
| boolean finished = chan.finishConnect(); |
| assert finished : "Expected channel to be connected"; |
| if (debug.on()) |
| debug.log("ConnectEvent: connect finished: %s Local addr: %s", |
| finished, chan.getLocalAddress()); |
| // complete async since the event runs on the SelectorManager thread |
| cf.completeAsync(() -> null, client().theExecutor()); |
| } catch (Throwable e) { |
| Throwable t = Utils.toConnectException(e); |
| client().theExecutor().execute( () -> cf.completeExceptionally(t)); |
| close(); |
| } |
| } |
| |
| @Override |
| public void abort(IOException ioe) { |
| client().theExecutor().execute( () -> cf.completeExceptionally(ioe)); |
| close(); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Void> connectAsync(Exchange<?> exchange) { |
| CompletableFuture<Void> cf = new MinimalFuture<>(); |
| try { |
| assert !connected : "Already connected"; |
| assert !chan.isBlocking() : "Unexpected blocking channel"; |
| boolean finished; |
| |
| connectTimerEvent = newConnectTimer(exchange, cf); |
| if (connectTimerEvent != null) { |
| if (debug.on()) |
| debug.log("registering connect timer: " + connectTimerEvent); |
| client().registerTimer(connectTimerEvent); |
| } |
| |
| PrivilegedExceptionAction<Boolean> pa = |
| () -> chan.connect(Utils.resolveAddress(address)); |
| try { |
| finished = AccessController.doPrivileged(pa); |
| } catch (PrivilegedActionException e) { |
| throw e.getCause(); |
| } |
| if (finished) { |
| if (debug.on()) debug.log("connect finished without blocking"); |
| cf.complete(null); |
| } else { |
| if (debug.on()) debug.log("registering connect event"); |
| client().registerEvent(new ConnectEvent(cf)); |
| } |
| } catch (Throwable throwable) { |
| cf.completeExceptionally(Utils.toConnectException(throwable)); |
| try { |
| close(); |
| } catch (Exception x) { |
| if (debug.on()) |
| debug.log("Failed to close channel after unsuccessful connect"); |
| } |
| } |
| return cf; |
| } |
| |
| @Override |
| public CompletableFuture<Void> finishConnect() { |
| assert connected == false; |
| if (debug.on()) debug.log("finishConnect, setting connected=true"); |
| connected = true; |
| if (connectTimerEvent != null) |
| client().cancelTimer(connectTimerEvent); |
| return MinimalFuture.completedFuture(null); |
| } |
| |
| @Override |
| SocketChannel channel() { |
| return chan; |
| } |
| |
| @Override |
| final FlowTube getConnectionFlow() { |
| return tube; |
| } |
| |
| PlainHttpConnection(InetSocketAddress addr, HttpClientImpl client) { |
| super(addr, client); |
| try { |
| this.chan = SocketChannel.open(); |
| chan.configureBlocking(false); |
| trySetReceiveBufferSize(client.getReceiveBufferSize()); |
| if (debug.on()) { |
| int bufsize = getInitialBufferSize(); |
| debug.log("Initial receive buffer size is: %d", bufsize); |
| } |
| chan.setOption(StandardSocketOptions.TCP_NODELAY, true); |
| // wrap the channel in a Tube for async reading and writing |
| tube = new SocketTube(client(), chan, Utils::getBuffer); |
| } catch (IOException e) { |
| throw new InternalError(e); |
| } |
| } |
| |
| private int getInitialBufferSize() { |
| try { |
| return chan.getOption(StandardSocketOptions.SO_RCVBUF); |
| } catch(IOException x) { |
| if (debug.on()) |
| debug.log("Failed to get initial receive buffer size on %s", chan); |
| } |
| return 0; |
| } |
| |
| private void trySetReceiveBufferSize(int bufsize) { |
| try { |
| if (bufsize > 0) { |
| chan.setOption(StandardSocketOptions.SO_RCVBUF, bufsize); |
| } |
| } catch(IOException x) { |
| if (debug.on()) |
| debug.log("Failed to set receive buffer size to %d on %s", |
| bufsize, chan); |
| } |
| } |
| |
| @Override |
| HttpPublisher publisher() { return writePublisher; } |
| |
| |
| @Override |
| public String toString() { |
| return "PlainHttpConnection: " + super.toString(); |
| } |
| |
| /** |
| * Closes this connection |
| */ |
| @Override |
| public void close() { |
| synchronized (this) { |
| if (closed) { |
| return; |
| } |
| closed = true; |
| } |
| try { |
| Log.logTrace("Closing: " + toString()); |
| if (debug.on()) |
| debug.log("Closing channel: " + client().debugInterestOps(chan)); |
| if (connectTimerEvent != null) |
| client().cancelTimer(connectTimerEvent); |
| chan.close(); |
| tube.signalClosed(); |
| } catch (IOException e) { |
| Log.logTrace("Closing resulted in " + e); |
| } |
| } |
| |
| |
| @Override |
| ConnectionPool.CacheKey cacheKey() { |
| return new ConnectionPool.CacheKey(address, null); |
| } |
| |
| @Override |
| synchronized boolean connected() { |
| return connected; |
| } |
| |
| |
| @Override |
| boolean isSecure() { |
| return false; |
| } |
| |
| @Override |
| boolean isProxied() { |
| return false; |
| } |
| |
| } |