src/java.net.http/share/classes/jdk/internal/net/http/PlainTunnelingConnection.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/PlainTunnelingConnection.java Wed Feb 07 21:45:37 2018 +0000
@@ -0,0 +1,166 @@
+/*
+ * 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 jdk.internal.net.http;
+
+import java.io.IOException;
+import java.lang.System.Logger.Level;
+import java.net.InetSocketAddress;
+import java.nio.ByteBuffer;
+import java.nio.channels.SocketChannel;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Function;
+import java.net.http.HttpHeaders;
+import jdk.internal.net.http.common.FlowTube;
+import jdk.internal.net.http.common.MinimalFuture;
+import static java.net.http.HttpResponse.BodyHandler.discard;
+
+/**
+ * A plain text socket tunnel through a proxy. Uses "CONNECT" but does not
+ * encrypt. Used by WebSocket, as well as HTTP over SSL + Proxy.
+ * Wrapped in SSLTunnelConnection or AsyncSSLTunnelConnection for encryption.
+ */
+final class PlainTunnelingConnection extends HttpConnection {
+
+ final PlainHttpConnection delegate;
+ final HttpHeaders proxyHeaders;
+ final InetSocketAddress proxyAddr;
+ private volatile boolean connected;
+
+ protected PlainTunnelingConnection(InetSocketAddress addr,
+ InetSocketAddress proxy,
+ HttpClientImpl client,
+ HttpHeaders proxyHeaders) {
+ super(addr, client);
+ this.proxyAddr = proxy;
+ this.proxyHeaders = proxyHeaders;
+ delegate = new PlainHttpConnection(proxy, client);
+ }
+
+ @Override
+ public CompletableFuture<Void> connectAsync() {
+ debug.log(Level.DEBUG, "Connecting plain connection");
+ return delegate.connectAsync()
+ .thenCompose((Void v) -> {
+ debug.log(Level.DEBUG, "sending HTTP/1.1 CONNECT");
+ HttpClientImpl client = client();
+ assert client != null;
+ HttpRequestImpl req = new HttpRequestImpl("CONNECT", address, proxyHeaders);
+ MultiExchange<Void> mulEx = new MultiExchange<>(null, req,
+ client, discard(), null, null);
+ Exchange<Void> connectExchange = new Exchange<>(req, mulEx);
+
+ return connectExchange
+ .responseAsyncImpl(delegate)
+ .thenCompose((Response resp) -> {
+ CompletableFuture<Void> cf = new MinimalFuture<>();
+ debug.log(Level.DEBUG, "got response: %d", resp.statusCode());
+ if (resp.statusCode() == 407) {
+ return connectExchange.ignoreBody().handle((r,t) -> {
+ // close delegate after reading body: we won't
+ // be reusing that connection anyway.
+ delegate.close();
+ ProxyAuthenticationRequired authenticationRequired =
+ new ProxyAuthenticationRequired(resp);
+ cf.completeExceptionally(authenticationRequired);
+ return cf;
+ }).thenCompose(Function.identity());
+ } else if (resp.statusCode() != 200) {
+ delegate.close();
+ cf.completeExceptionally(new IOException(
+ "Tunnel failed, got: "+ resp.statusCode()));
+ } else {
+ // get the initial/remaining bytes
+ ByteBuffer b = ((Http1Exchange<?>)connectExchange.exchImpl).drainLeftOverBytes();
+ int remaining = b.remaining();
+ assert remaining == 0: "Unexpected remaining: " + remaining;
+ connected = true;
+ cf.complete(null);
+ }
+ return cf;
+ });
+ });
+ }
+
+ @Override
+ boolean isTunnel() { return true; }
+
+ @Override
+ HttpPublisher publisher() { return delegate.publisher(); }
+
+ @Override
+ boolean connected() {
+ return connected;
+ }
+
+ @Override
+ SocketChannel channel() {
+ return delegate.channel();
+ }
+
+ @Override
+ FlowTube getConnectionFlow() {
+ return delegate.getConnectionFlow();
+ }
+
+ @Override
+ ConnectionPool.CacheKey cacheKey() {
+ return new ConnectionPool.CacheKey(null, proxyAddr);
+ }
+
+ @Override
+ public void close() {
+ delegate.close();
+ connected = false;
+ }
+
+ @Override
+ void shutdownInput() throws IOException {
+ delegate.shutdownInput();
+ }
+
+ @Override
+ void shutdownOutput() throws IOException {
+ delegate.shutdownOutput();
+ }
+
+ @Override
+ boolean isSecure() {
+ return false;
+ }
+
+ @Override
+ boolean isProxied() {
+ 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.
+ @Override
+ DetachedConnectionChannel detachChannel() {
+ return delegate.detachChannel();
+ }
+}