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Java example source code file (HttpConnectSocketImpl.java)
The HttpConnectSocketImpl.java Java example source code/* * Copyright (c) 2010, 2013, 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; import java.io.IOException; import java.lang.reflect.Field; import java.lang.reflect.Method; import java.util.HashMap; import java.util.Map; import java.util.Set; /** * Basic SocketImpl that relies on the internal HTTP protocol handler * implementation to perform the HTTP tunneling and authentication. The * sockets impl is swapped out and replaced with the socket from the HTTP * handler after the tunnel is successfully setup. * * @since 1.8 */ /*package*/ class HttpConnectSocketImpl extends PlainSocketImpl { private static final String httpURLClazzStr = "sun.net.www.protocol.http.HttpURLConnection"; private static final String netClientClazzStr = "sun.net.NetworkClient"; private static final String doTunnelingStr = "doTunneling"; private static final Field httpField; private static final Field serverSocketField; private static final Method doTunneling; private final String server; private InetSocketAddress external_address; private HashMap<Integer, Object> optionsMap = new HashMap<>(); static { try { Class<?> httpClazz = Class.forName(httpURLClazzStr, true, null); httpField = httpClazz.getDeclaredField("http"); doTunneling = httpClazz.getDeclaredMethod(doTunnelingStr); Class<?> netClientClazz = Class.forName(netClientClazzStr, true, null); serverSocketField = netClientClazz.getDeclaredField("serverSocket"); java.security.AccessController.doPrivileged( new java.security.PrivilegedAction<Void>() { public Void run() { httpField.setAccessible(true); serverSocketField.setAccessible(true); return null; } }); } catch (ReflectiveOperationException x) { throw new InternalError("Should not reach here", x); } } HttpConnectSocketImpl(String server, int port) { this.server = server; this.port = port; } HttpConnectSocketImpl(Proxy proxy) { SocketAddress a = proxy.address(); if ( !(a instanceof InetSocketAddress) ) throw new IllegalArgumentException("Unsupported address type"); InetSocketAddress ad = (InetSocketAddress) a; server = ad.getHostString(); port = ad.getPort(); } @Override protected void connect(SocketAddress endpoint, int timeout) throws IOException { if (endpoint == null || !(endpoint instanceof InetSocketAddress)) throw new IllegalArgumentException("Unsupported address type"); final InetSocketAddress epoint = (InetSocketAddress)endpoint; final String destHost = epoint.isUnresolved() ? epoint.getHostName() : epoint.getAddress().getHostAddress(); final int destPort = epoint.getPort(); SecurityManager security = System.getSecurityManager(); if (security != null) security.checkConnect(destHost, destPort); // Connect to the HTTP proxy server String urlString = "http://" + destHost + ":" + destPort; Socket httpSocket = privilegedDoTunnel(urlString, timeout); // Success! external_address = epoint; // close the original socket impl and release its descriptor close(); // update the Sockets impl to the impl from the http Socket AbstractPlainSocketImpl psi = (AbstractPlainSocketImpl) httpSocket.impl; this.getSocket().impl = psi; // best effort is made to try and reset options previously set Set<Map.Entry Other Java examples (source code examples)Here is a short list of links related to this Java HttpConnectSocketImpl.java source code file: |
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