| /* |
| * Copyright (c) 2015, 2020, 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.net.InetSocketAddress; |
| import java.net.http.HttpTimeoutException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.SocketChannel; |
| import java.time.Duration; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.CompletionException; |
| 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.BodyHandlers.discarding; |
| |
| /** |
| * 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(Exchange<?> exchange) { |
| if (debug.on()) debug.log("Connecting plain connection"); |
| return delegate.connectAsync(exchange) |
| .thenCompose(unused -> delegate.finishConnect()) |
| .thenCompose((Void v) -> { |
| if (debug.on()) debug.log("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, discarding(), null, null); |
| Exchange<Void> connectExchange = mulEx.getExchange(); |
| |
| return connectExchange |
| .responseAsyncImpl(delegate) |
| .thenCompose((Response resp) -> { |
| CompletableFuture<Void> cf = new MinimalFuture<>(); |
| if (debug.on()) debug.log("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; |
| cf.complete(null); |
| } |
| return cf; |
| }) |
| .handle((result, ex) -> { |
| if (ex == null) { |
| return MinimalFuture.completedFuture(result); |
| } else { |
| if (debug.on()) |
| debug.log("tunnel failed with \"%s\"", ex.toString()); |
| Throwable t = ex; |
| if (t instanceof CompletionException) |
| t = t.getCause(); |
| if (t instanceof HttpTimeoutException) { |
| String msg = "proxy tunneling CONNECT request timed out"; |
| t = new HttpTimeoutException(msg); |
| t.initCause(ex); |
| } |
| return MinimalFuture.<Void>failedFuture(t); |
| } |
| }) |
| .thenCompose(Function.identity()); |
| }); |
| } |
| |
| public CompletableFuture<Void> finishConnect() { |
| connected = true; |
| return MinimalFuture.completedFuture(null); |
| } |
| |
| @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 |
| boolean isSecure() { |
| return false; |
| } |
| |
| @Override |
| boolean isProxied() { |
| return true; |
| } |
| |
| @Override |
| InetSocketAddress proxy() { |
| return proxyAddr; |
| } |
| } |