branch | http-client-branch |
changeset 56089 | 42208b2f224e |
parent 56082 | 1da51fab3032 |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/java.net.http/share/classes/java/net/http/internal/PlainTunnelingConnection.java Wed Feb 07 14:17:24 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 java.net.http.internal; + +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 java.net.http.internal.common.FlowTube; +import java.net.http.internal.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(); + } +}