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/*
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* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.net.http;
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import java.io.IOException;
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import java.net.InetSocketAddress;
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import java.nio.ByteBuffer;
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import java.nio.channels.SocketChannel;
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import java.security.AccessControlContext;
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import java.util.concurrent.CompletableFuture;
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/**
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* A plain text socket tunnel through a proxy. Uses "CONNECT" but does not
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* encrypt. Used by WebSockets. Subclassed in SSLTunnelConnection for encryption.
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*/
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class PlainTunnelingConnection extends HttpConnection {
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final PlainHttpConnection delegate;
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protected final InetSocketAddress proxyAddr;
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private volatile boolean connected;
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private final AccessControlContext acc;
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@Override
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public CompletableFuture<Void> connectAsync() {
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return delegate.connectAsync()
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.thenCompose((Void v) -> {
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HttpRequestImpl req = new HttpRequestImpl(client, "CONNECT", address);
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Exchange connectExchange = new Exchange(req, acc);
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return connectExchange
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.responseAsyncImpl(delegate)
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.thenCompose((HttpResponse r) -> {
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CompletableFuture<Void> cf = new CompletableFuture<>();
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if (r.statusCode() != 200) {
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cf.completeExceptionally(new IOException("Tunnel failed"));
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} else {
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connected = true;
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cf.complete(null);
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}
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return cf;
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});
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});
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}
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@Override
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public void connect() throws IOException, InterruptedException {
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delegate.connect();
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HttpRequestImpl req = new HttpRequestImpl(client, "CONNECT", address);
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Exchange connectExchange = new Exchange(req, acc);
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HttpResponse r = connectExchange.responseImpl(delegate);
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if (r.statusCode() != 200) {
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throw new IOException("Tunnel failed");
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}
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connected = true;
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}
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@Override
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boolean connected() {
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return connected;
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}
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protected PlainTunnelingConnection(InetSocketAddress addr,
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InetSocketAddress proxy,
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HttpClientImpl client,
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AccessControlContext acc) {
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super(addr, client);
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this.proxyAddr = proxy;
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this.acc = acc;
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delegate = new PlainHttpConnection(proxy, client);
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}
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@Override
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SocketChannel channel() {
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return delegate.channel();
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}
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@Override
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ConnectionPool.CacheKey cacheKey() {
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return new ConnectionPool.CacheKey(null, proxyAddr);
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}
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@Override
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long write(ByteBuffer[] buffers, int start, int number) throws IOException {
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return delegate.write(buffers, start, number);
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}
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@Override
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long write(ByteBuffer buffer) throws IOException {
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return delegate.write(buffer);
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}
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@Override
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void close() {
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delegate.close();
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connected = false;
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}
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@Override
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protected ByteBuffer readImpl(int length) throws IOException {
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return delegate.readImpl(length);
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}
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@Override
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CompletableFuture<Void> whenReceivingResponse() {
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return delegate.whenReceivingResponse();
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}
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@Override
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protected int readImpl(ByteBuffer buffer) throws IOException {
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return delegate.readImpl(buffer);
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}
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@Override
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boolean isSecure() {
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return false;
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}
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@Override
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boolean isProxied() {
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return true;
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}
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}
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