src/java.net.http/share/classes/java/net/http/internal/AbstractAsyncSSLConnection.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.net.http/share/classes/java/net/http/internal/AbstractAsyncSSLConnection.java Wed Feb 07 14:17:24 2018 +0000
@@ -0,0 +1,188 @@
+/*
+ * Copyright (c) 2015, 2018, 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 java.net.http.internal;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.nio.ByteBuffer;
+import java.nio.channels.SocketChannel;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import javax.net.ssl.SNIHostName;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.SSLEngineResult;
+import javax.net.ssl.SSLParameters;
+
+import java.net.http.internal.common.SSLTube;
+import java.net.http.internal.common.Log;
+import java.net.http.internal.common.Utils;
+
+
+/**
+ * Asynchronous version of SSLConnection.
+ *
+ * There are two concrete implementations of this class: AsyncSSLConnection
+ * and AsyncSSLTunnelConnection.
+ * This abstraction is useful when downgrading from HTTP/2 to HTTP/1.1 over
+ * an SSL connection. See ExchangeImpl::get in the case where an ALPNException
+ * is thrown.
+ *
+ * Note: An AsyncSSLConnection wraps a PlainHttpConnection, while an
+ * AsyncSSLTunnelConnection wraps a PlainTunnelingConnection.
+ * If both these wrapped classes where made to inherit from a
+ * common abstraction then it might be possible to merge
+ * AsyncSSLConnection and AsyncSSLTunnelConnection back into
+ * a single class - and simply use different factory methods to
+ * create different wrappees, but this is left up for further cleanup.
+ *
+ */
+abstract class AbstractAsyncSSLConnection extends HttpConnection
+{
+ protected final SSLEngine engine;
+ protected final String serverName;
+ protected final SSLParameters sslParameters;
+
+ AbstractAsyncSSLConnection(InetSocketAddress addr,
+ HttpClientImpl client,
+ String serverName,
+ String[] alpn) {
+ super(addr, client);
+ this.serverName = serverName;
+ SSLContext context = client.theSSLContext();
+ sslParameters = createSSLParameters(client, serverName, alpn);
+ Log.logParams(sslParameters);
+ engine = createEngine(context, sslParameters);
+ }
+
+ abstract HttpConnection plainConnection();
+ abstract SSLTube getConnectionFlow();
+
+ final CompletableFuture<String> getALPN() {
+ assert connected();
+ return getConnectionFlow().getALPN();
+ }
+
+ final SSLEngine getEngine() { return engine; }
+
+ private static SSLParameters createSSLParameters(HttpClientImpl client,
+ String serverName,
+ String[] alpn) {
+ SSLParameters sslp = client.sslParameters();
+ SSLParameters sslParameters = Utils.copySSLParameters(sslp);
+ if (alpn != null) {
+ Log.logSSL("AbstractAsyncSSLConnection: Setting application protocols: {0}",
+ Arrays.toString(alpn));
+ sslParameters.setApplicationProtocols(alpn);
+ } else {
+ Log.logSSL("AbstractAsyncSSLConnection: no applications set!");
+ }
+ if (serverName != null) {
+ sslParameters.setServerNames(List.of(new SNIHostName(serverName)));
+ }
+ return sslParameters;
+ }
+
+ private static SSLEngine createEngine(SSLContext context,
+ SSLParameters sslParameters) {
+ SSLEngine engine = context.createSSLEngine();
+ engine.setUseClientMode(true);
+ engine.setSSLParameters(sslParameters);
+ return engine;
+ }
+
+ @Override
+ final boolean isSecure() {
+ return true;
+ }
+
+ // Support for WebSocket/RawChannelImpl which unfortunately
+ // still depends on synchronous read/writes.
+ // It should be removed when RawChannelImpl moves to using asynchronous APIs.
+ static final class SSLConnectionChannel extends DetachedConnectionChannel {
+ final DetachedConnectionChannel delegate;
+ final SSLDelegate sslDelegate;
+ SSLConnectionChannel(DetachedConnectionChannel delegate, SSLDelegate sslDelegate) {
+ this.delegate = delegate;
+ this.sslDelegate = sslDelegate;
+ }
+
+ SocketChannel channel() {
+ return delegate.channel();
+ }
+
+ @Override
+ ByteBuffer read() throws IOException {
+ SSLDelegate.WrapperResult r = sslDelegate.recvData(ByteBuffer.allocate(8192));
+ // TODO: check for closure
+ int n = r.result.bytesProduced();
+ if (n > 0) {
+ return r.buf;
+ } else if (n == 0) {
+ return Utils.EMPTY_BYTEBUFFER;
+ } else {
+ return null;
+ }
+ }
+ @Override
+ long write(ByteBuffer[] buffers, int start, int number) throws IOException {
+ long l = SSLDelegate.countBytes(buffers, start, number);
+ SSLDelegate.WrapperResult r = sslDelegate.sendData(buffers, start, number);
+ if (r.result.getStatus() == SSLEngineResult.Status.CLOSED) {
+ if (l > 0) {
+ throw new IOException("SSLHttpConnection closed");
+ }
+ }
+ return l;
+ }
+ @Override
+ public void shutdownInput() throws IOException {
+ delegate.shutdownInput();
+ }
+ @Override
+ public void shutdownOutput() throws IOException {
+ delegate.shutdownOutput();
+ }
+ @Override
+ public void close() {
+ delegate.close();
+ }
+ }
+
+ // Support for WebSocket/RawChannelImpl which unfortunately
+ // still depends on synchronous read/writes.
+ // It should be removed when RawChannelImpl moves to using asynchronous APIs.
+ @Override
+ DetachedConnectionChannel detachChannel() {
+ assert client() != null;
+ DetachedConnectionChannel detachedChannel = plainConnection().detachChannel();
+ SSLDelegate sslDelegate = new SSLDelegate(engine,
+ detachedChannel.channel());
+ return new SSLConnectionChannel(detachedChannel, sslDelegate);
+ }
+
+}