| /* |
| * Copyright (c) 2015, 2016, 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.incubator.http; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.net.URI; |
| import java.util.Base64; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import jdk.incubator.http.internal.common.Utils; |
| import jdk.incubator.http.internal.frame.SettingsFrame; |
| import static jdk.incubator.http.internal.frame.SettingsFrame.INITIAL_WINDOW_SIZE; |
| import static jdk.incubator.http.internal.frame.SettingsFrame.ENABLE_PUSH; |
| import static jdk.incubator.http.internal.frame.SettingsFrame.HEADER_TABLE_SIZE; |
| import static jdk.incubator.http.internal.frame.SettingsFrame.MAX_CONCURRENT_STREAMS; |
| import static jdk.incubator.http.internal.frame.SettingsFrame.MAX_FRAME_SIZE; |
| |
| /** |
| * Http2 specific aspects of HttpClientImpl |
| */ |
| class Http2ClientImpl { |
| |
| private final HttpClientImpl client; |
| |
| Http2ClientImpl(HttpClientImpl client) { |
| this.client = client; |
| } |
| |
| /* Map key is "scheme:host:port" */ |
| private final Map<String,Http2Connection> connections = new ConcurrentHashMap<>(); |
| |
| private final Set<String> opening = Collections.synchronizedSet(new HashSet<>()); |
| |
| boolean haveConnectionFor(URI uri, InetSocketAddress proxy) { |
| return connections.containsKey(Http2Connection.keyFor(uri,proxy)); |
| } |
| |
| /** |
| * If a https request then blocks and waits until a connection is opened. |
| * Returns null if the request is 'http' as a different (upgrade) |
| * mechanism is used. |
| * |
| * Only one connection per destination is created. Blocks when opening |
| * connection, or when waiting for connection to be opened. |
| * First thread opens the connection and notifies the others when done. |
| * |
| * If the request is secure (https) then we open the connection here. |
| * If not, then the more complicated upgrade from 1.1 to 2 happens (not here) |
| * In latter case, when the Http2Connection is connected, putConnection() must |
| * be called to store it. |
| */ |
| Http2Connection getConnectionFor(HttpRequestImpl req) |
| throws IOException, InterruptedException { |
| URI uri = req.uri(); |
| InetSocketAddress proxy = req.proxy(client); |
| String key = Http2Connection.keyFor(uri, proxy); |
| Http2Connection connection = connections.get(key); |
| if (connection != null) { // fast path if connection already exists |
| return connection; |
| } |
| synchronized (opening) { |
| while ((connection = connections.get(key)) == null) { |
| if (!req.secure()) { |
| return null; |
| } |
| if (!opening.contains(key)) { |
| opening.add(key); |
| break; |
| } else { |
| opening.wait(); |
| } |
| } |
| } |
| if (connection != null) { |
| return connection; |
| } |
| // we are opening the connection here blocking until it is done. |
| try { |
| connection = new Http2Connection(req, this); |
| } catch (Throwable t) { |
| synchronized (opening) { |
| opening.remove(key); |
| opening.notifyAll(); |
| } |
| throw t; |
| } |
| synchronized (opening) { |
| connections.put(key, connection); |
| opening.remove(key); |
| opening.notifyAll(); |
| } |
| return connection; |
| } |
| |
| |
| /* |
| * TODO: If there isn't a connection to the same destination, then |
| * store it. If there is already a connection, then close it |
| */ |
| void putConnection(Http2Connection c) { |
| connections.put(c.key(), c); |
| } |
| |
| void deleteConnection(Http2Connection c) { |
| connections.remove(c.key()); |
| } |
| |
| HttpClientImpl client() { |
| return client; |
| } |
| |
| /** Returns the client settings as a base64 (url) encoded string */ |
| String getSettingsString() { |
| SettingsFrame sf = getClientSettings(); |
| byte[] settings = sf.toByteArray(); // without the header |
| Base64.Encoder encoder = Base64.getUrlEncoder() |
| .withoutPadding(); |
| return encoder.encodeToString(settings); |
| } |
| |
| private static final int K = 1024; |
| |
| SettingsFrame getClientSettings() { |
| SettingsFrame frame = new SettingsFrame(); |
| frame.setParameter(HEADER_TABLE_SIZE, Utils.getIntegerNetProperty( |
| "jdk.httpclient.hpack.maxheadertablesize", 16 * K)); |
| frame.setParameter(ENABLE_PUSH, Utils.getIntegerNetProperty( |
| "jdk.httpclient.enablepush", 1)); |
| frame.setParameter(MAX_CONCURRENT_STREAMS, Utils.getIntegerNetProperty( |
| "jdk.httpclient.maxstreams", 16)); |
| frame.setParameter(INITIAL_WINDOW_SIZE, Utils.getIntegerNetProperty( |
| "jdk.httpclient.windowsize", 64 * K - 1)); |
| frame.setParameter(MAX_FRAME_SIZE, Utils.getIntegerNetProperty( |
| "jdk.httpclient.maxframesize", 16 * K)); |
| return frame; |
| } |
| } |