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 26 package java.net.http; 27 28 import java.io.IOException; 29 import java.net.InetSocketAddress; 30 import java.nio.ByteBuffer; 31 import java.nio.channels.SocketChannel; 32 import java.security.AccessControlContext; 33 import java.util.concurrent.CompletableFuture; 34 35 /** 36 * A plain text socket tunnel through a proxy. Uses "CONNECT" but does not 37 * encrypt. Used by WebSockets. Subclassed in SSLTunnelConnection for encryption. 38 */ 39 class PlainTunnelingConnection extends HttpConnection { 40 41 final PlainHttpConnection delegate; 42 protected final InetSocketAddress proxyAddr; 43 private volatile boolean connected; 44 private final AccessControlContext acc; 45 46 @Override 47 public CompletableFuture<Void> connectAsync() { 48 return delegate.connectAsync() 49 .thenCompose((Void v) -> { 50 HttpRequestImpl req = new HttpRequestImpl(client, "CONNECT", address); 51 Exchange connectExchange = new Exchange(req, acc); 52 return connectExchange 53 .responseAsyncImpl(delegate) 54 .thenCompose((HttpResponse r) -> { 55 CompletableFuture<Void> cf = new CompletableFuture<>(); 56 if (r.statusCode() != 200) { 57 cf.completeExceptionally(new IOException("Tunnel failed")); 58 } else { 59 connected = true; 60 cf.complete(null); 61 } 62 return cf; 63 }); 64 }); 65 } 66 67 @Override 68 public void connect() throws IOException, InterruptedException { 69 delegate.connect(); 70 HttpRequestImpl req = new HttpRequestImpl(client, "CONNECT", address); 71 Exchange connectExchange = new Exchange(req, acc); 72 HttpResponse r = connectExchange.responseImpl(delegate); 73 if (r.statusCode() != 200) { 74 throw new IOException("Tunnel failed"); 75 } 76 connected = true; 77 } 78 79 @Override 80 boolean connected() { 81 return connected; 82 } 83 84 protected PlainTunnelingConnection(InetSocketAddress addr, 85 InetSocketAddress proxy, 86 HttpClientImpl client, 87 AccessControlContext acc) { 88 super(addr, client); 89 this.proxyAddr = proxy; 90 this.acc = acc; 91 delegate = new PlainHttpConnection(proxy, client); 92 } 93 94 @Override 95 SocketChannel channel() { 96 return delegate.channel(); 97 } 98 99 @Override 100 ConnectionPool.CacheKey cacheKey() { 101 return new ConnectionPool.CacheKey(null, proxyAddr); 102 } 103 104 @Override 105 long write(ByteBuffer[] buffers, int start, int number) throws IOException { 106 return delegate.write(buffers, start, number); 107 } 108 109 @Override 110 long write(ByteBuffer buffer) throws IOException { 111 return delegate.write(buffer); 112 } 113 114 @Override 115 public void close() { 116 delegate.close(); 117 connected = false; 118 } 119 120 @Override 121 protected ByteBuffer readImpl(int length) throws IOException { 122 return delegate.readImpl(length); 123 } 124 125 @Override 126 CompletableFuture<Void> whenReceivingResponse() { 127 return delegate.whenReceivingResponse(); 128 } 129 130 @Override 131 protected int readImpl(ByteBuffer buffer) throws IOException { 132 return delegate.readImpl(buffer); 133 } 134 135 @Override 136 boolean isSecure() { 137 return false; 138 } 139 140 @Override 141 boolean isProxied() { 142 return true; 143 } 144 }