| /* |
| * 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 6370908 |
| * @summary Add support for HTTP_CONNECT proxy in Socket class |
| * @modules java.base/sun.net.www |
| */ |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.PrintWriter; |
| import static java.lang.System.out; |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.net.Proxy; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import sun.net.www.MessageHeader; |
| |
| public class HttpProxy { |
| final String proxyHost; |
| final int proxyPort; |
| static final int SO_TIMEOUT = 15000; |
| |
| public static void main(String[] args) throws Exception { |
| String host; |
| int port; |
| if (args.length == 0) { |
| // Start internal proxy |
| ConnectProxyTunnelServer proxy = new ConnectProxyTunnelServer(); |
| proxy.start(); |
| host = "localhost"; |
| port = proxy.getLocalPort(); |
| out.println("Running with internal proxy: " + host + ":" + port); |
| } else if (args.length == 2) { |
| host = args[0]; |
| port = Integer.valueOf(args[1]); |
| out.println("Running against specified proxy server: " + host + ":" + port); |
| } else { |
| System.err.println("Usage: java HttpProxy [<proxy host> <proxy port>]"); |
| return; |
| } |
| |
| HttpProxy p = new HttpProxy(host, port); |
| p.test(); |
| } |
| |
| public HttpProxy(String proxyHost, int proxyPort) { |
| this.proxyHost = proxyHost; |
| this.proxyPort = proxyPort; |
| } |
| |
| void test() throws Exception { |
| InetSocketAddress proxyAddress = new InetSocketAddress(proxyHost, proxyPort); |
| Proxy httpProxy = new Proxy(Proxy.Type.HTTP, proxyAddress); |
| |
| try (ServerSocket ss = new ServerSocket(0); |
| Socket sock = new Socket(httpProxy)) { |
| sock.setSoTimeout(SO_TIMEOUT); |
| sock.setTcpNoDelay(false); |
| |
| InetSocketAddress externalAddress = |
| new InetSocketAddress(InetAddress.getLocalHost(), ss.getLocalPort()); |
| |
| out.println("Trying to connect to server socket on " + externalAddress); |
| sock.connect(externalAddress); |
| try (Socket externalSock = ss.accept()) { |
| // perform some simple checks |
| check(sock.isBound(), "Socket is not bound"); |
| check(sock.isConnected(), "Socket is not connected"); |
| check(!sock.isClosed(), "Socket should not be closed"); |
| check(sock.getSoTimeout() == SO_TIMEOUT, |
| "Socket should have a previously set timeout"); |
| check(sock.getTcpNoDelay() == false, "NODELAY should be false"); |
| |
| simpleDataExchange(sock, externalSock); |
| } |
| } |
| } |
| |
| static void check(boolean condition, String message) { |
| if (!condition) out.println(message); |
| } |
| |
| static Exception unexpected(Exception e) { |
| out.println("Unexcepted Exception: " + e); |
| e.printStackTrace(); |
| return e; |
| } |
| |
| // performs a simple exchange of data between the two sockets |
| // and throws an exception if there is any problem. |
| void simpleDataExchange(Socket s1, Socket s2) throws Exception { |
| try (final InputStream i1 = s1.getInputStream(); |
| final InputStream i2 = s2.getInputStream(); |
| final OutputStream o1 = s1.getOutputStream(); |
| final OutputStream o2 = s2.getOutputStream()) { |
| startSimpleWriter("simpleWriter1", o1, 100); |
| startSimpleWriter("simpleWriter2", o2, 200); |
| simpleRead(i2, 100); |
| simpleRead(i1, 200); |
| } |
| } |
| |
| void startSimpleWriter(String threadName, final OutputStream os, final int start) { |
| (new Thread(new Runnable() { |
| public void run() { |
| try { simpleWrite(os, start); } |
| catch (Exception e) {unexpected(e); } |
| }}, threadName)).start(); |
| } |
| |
| void simpleWrite(OutputStream os, int start) throws Exception { |
| byte b[] = new byte[2]; |
| for (int i=start; i<start+100; i++) { |
| b[0] = (byte) (i / 256); |
| b[1] = (byte) (i % 256); |
| os.write(b); |
| } |
| } |
| |
| void simpleRead(InputStream is, int start) throws Exception { |
| byte b[] = new byte [2]; |
| for (int i=start; i<start+100; i++) { |
| int x = is.read(b); |
| if (x == 1) |
| x += is.read(b,1,1); |
| if (x!=2) |
| throw new Exception("read error"); |
| int r = bytes(b[0], b[1]); |
| if (r != i) |
| throw new Exception("read " + r + " expected " +i); |
| } |
| } |
| |
| int bytes(byte b1, byte b2) { |
| int i1 = (int)b1 & 0xFF; |
| int i2 = (int)b2 & 0xFF; |
| return i1 * 256 + i2; |
| } |
| |
| static class ConnectProxyTunnelServer extends Thread { |
| |
| private final ServerSocket ss; |
| |
| public ConnectProxyTunnelServer() throws IOException { |
| ss = new ServerSocket(0); |
| } |
| |
| @Override |
| public void run() { |
| try (Socket clientSocket = ss.accept()) { |
| processRequest(clientSocket); |
| } catch (Exception e) { |
| out.println("Proxy Failed: " + e); |
| e.printStackTrace(); |
| } finally { |
| try { ss.close(); } catch (IOException x) { unexpected(x); } |
| } |
| } |
| |
| /** |
| * Returns the port on which the proxy is accepting connections. |
| */ |
| public int getLocalPort() { |
| return ss.getLocalPort(); |
| } |
| |
| /* |
| * Processes the CONNECT request |
| */ |
| private void processRequest(Socket clientSocket) throws Exception { |
| MessageHeader mheader = new MessageHeader(clientSocket.getInputStream()); |
| String statusLine = mheader.getValue(0); |
| |
| if (!statusLine.startsWith("CONNECT")) { |
| out.println("proxy server: processes only " |
| + "CONNECT method requests, recieved: " |
| + statusLine); |
| return; |
| } |
| |
| // retrieve the host and port info from the status-line |
| InetSocketAddress serverAddr = getConnectInfo(statusLine); |
| |
| //open socket to the server |
| try (Socket serverSocket = new Socket(serverAddr.getAddress(), |
| serverAddr.getPort())) { |
| Forwarder clientFW = new Forwarder(clientSocket.getInputStream(), |
| serverSocket.getOutputStream()); |
| Thread clientForwarderThread = new Thread(clientFW, "ClientForwarder"); |
| clientForwarderThread.start(); |
| send200(clientSocket); |
| Forwarder serverFW = new Forwarder(serverSocket.getInputStream(), |
| clientSocket.getOutputStream()); |
| serverFW.run(); |
| clientForwarderThread.join(); |
| } |
| } |
| |
| private void send200(Socket clientSocket) throws IOException { |
| OutputStream out = clientSocket.getOutputStream(); |
| PrintWriter pout = new PrintWriter(out); |
| |
| pout.println("HTTP/1.1 200 OK"); |
| pout.println(); |
| pout.flush(); |
| } |
| |
| /* |
| * This method retrieves the hostname and port of the tunnel destination |
| * from the request line. |
| * @param connectStr |
| * of the form: <i>CONNECT server-name:server-port HTTP/1.x</i> |
| */ |
| static InetSocketAddress getConnectInfo(String connectStr) |
| throws Exception |
| { |
| try { |
| int starti = connectStr.indexOf(' '); |
| int endi = connectStr.lastIndexOf(' '); |
| String connectInfo = connectStr.substring(starti+1, endi).trim(); |
| // retrieve server name and port |
| endi = connectInfo.indexOf(':'); |
| String name = connectInfo.substring(0, endi); |
| int port = Integer.parseInt(connectInfo.substring(endi+1)); |
| return new InetSocketAddress(name, port); |
| } catch (Exception e) { |
| out.println("Proxy recieved a request: " + connectStr); |
| throw unexpected(e); |
| } |
| } |
| } |
| |
| /* Reads from the given InputStream and writes to the given OutputStream */ |
| static class Forwarder implements Runnable |
| { |
| private final InputStream in; |
| private final OutputStream os; |
| |
| Forwarder(InputStream in, OutputStream os) { |
| this.in = in; |
| this.os = os; |
| } |
| |
| @Override |
| public void run() { |
| try { |
| byte[] ba = new byte[1024]; |
| int count; |
| while ((count = in.read(ba)) != -1) { |
| os.write(ba, 0, count); |
| } |
| } catch (IOException e) { |
| unexpected(e); |
| } |
| } |
| } |
| } |