1 /* 2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package java.net.http; 26 27 import java.io.IOException; 28 import java.net.InetSocketAddress; 29 import java.nio.ByteBuffer; 30 import java.nio.channels.SocketChannel; 31 import java.security.AccessControlContext; 32 import java.util.concurrent.CompletableFuture; 33 34 /** 35 * A plain text socket tunnel through a proxy. Uses "CONNECT" but does not 36 * encrypt. Used by WebSockets. Subclassed in SSLTunnelConnection for encryption. 37 */ 38 class PlainTunnelingConnection extends HttpConnection { 39 40 final PlainHttpConnection delegate; 41 protected final InetSocketAddress proxyAddr; 42 private volatile boolean connected; 43 private final AccessControlContext acc; 44 45 @Override 46 public CompletableFuture<Void> connectAsync() { 47 return delegate.connectAsync() 48 .thenCompose((Void v) -> { 49 HttpRequestImpl req = new HttpRequestImpl(client, "CONNECT", address); 50 Exchange connectExchange = new Exchange(req, acc); 51 return connectExchange 52 .responseAsyncImpl(delegate) 53 .thenCompose((HttpResponse r) -> { 54 CompletableFuture<Void> cf = new CompletableFuture<>(); 55 if (r.statusCode() != 200) { 56 cf.completeExceptionally(new IOException("Tunnel failed")); 57 } else { 58 connected = true; 59 cf.complete(null); 60 } 61 return cf; 62 }); 63 }); 64 } 65 66 @Override 67 public void connect() throws IOException, InterruptedException { 68 delegate.connect(); 69 HttpRequestImpl req = new HttpRequestImpl(client, "CONNECT", address); 70 Exchange connectExchange = new Exchange(req, acc); 71 HttpResponse r = connectExchange.responseImpl(delegate); 72 if (r.statusCode() != 200) { 73 throw new IOException("Tunnel failed"); 74 } 75 connected = true; 76 } 77 78 @Override 79 boolean connected() { 80 return connected; 81 } 82 83 protected PlainTunnelingConnection(InetSocketAddress addr, 84 InetSocketAddress proxy, 85 HttpClientImpl client, 86 AccessControlContext acc) { 87 super(addr, client); 88 this.proxyAddr = proxy; 89 this.acc = acc; 90 delegate = new PlainHttpConnection(proxy, client); 91 } 92 93 @Override 94 SocketChannel channel() { 95 return delegate.channel(); 96 } 97 98 @Override 99 ConnectionPool.CacheKey cacheKey() { 100 return new ConnectionPool.CacheKey(null, proxyAddr); 101 } 102 103 @Override 104 long write(ByteBuffer[] buffers, int start, int number) throws IOException { 105 return delegate.write(buffers, start, number); 106 } 107 108 @Override 109 long write(ByteBuffer buffer) throws IOException { 110 return delegate.write(buffer); 111 } 112 113 @Override 114 public void close() { 115 delegate.close(); 116 connected = false; 117 } 118 119 @Override 120 protected ByteBuffer readImpl(int length) throws IOException { 121 return delegate.readImpl(length); 122 } 123 124 @Override 125 CompletableFuture<Void> whenReceivingResponse() { 126 return delegate.whenReceivingResponse(); 127 } 128 129 @Override 130 protected int readImpl(ByteBuffer buffer) throws IOException { 131 return delegate.readImpl(buffer); 132 } 133 134 @Override 135 boolean isSecure() { 136 return false; 137 } 138 139 @Override 140 boolean isProxied() { 141 return true; 142 } 143 }