| /* |
| * Copyright (c) 2005, 2016, 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 6299712 7150552 |
| * @modules jdk.httpserver |
| * @run main/othervm B6299712 |
| * @summary NullPointerException in sun.net.www.protocol.http.HttpURLConnection.followRedirect |
| */ |
| |
| import com.sun.net.httpserver.HttpExchange; |
| import com.sun.net.httpserver.HttpHandler; |
| import com.sun.net.httpserver.HttpServer; |
| import java.net.*; |
| import java.io.*; |
| import java.util.*; |
| |
| /* |
| * Test Description: |
| * - main thread is run as a http client |
| * - another thread runs an http server, which redirects calls to "/" to |
| * "/redirect" and returns '200 OK' for the successive call |
| * - a global ResponseCache instance is installed, which returns DeployCacheResponse |
| * for urls that end with "/redirect", i.e. the url redirected to by our simple http server, |
| * and null for other urls. |
| * - the whole result is that the first call will be served by our simple |
| * http server and is redirected to "/redirect". The successive call will be done |
| * automatically by HttpURLConnection, which will be served by DeployCacheResponse. |
| * The NPE will be thrown on the second round if the bug is there. |
| */ |
| public class B6299712 { |
| static HttpServer server; |
| |
| public static void main(String[] args) throws Exception { |
| ResponseCache.setDefault(new DeployCacheHandler()); |
| startHttpServer(); |
| |
| makeHttpCall(); |
| } |
| |
| public static void startHttpServer() throws IOException { |
| server = HttpServer.create(new InetSocketAddress(0), 0); |
| server.createContext("/", new DefaultHandler()); |
| server.createContext("/redirect", new RedirectHandler()); |
| server.start(); |
| } |
| |
| public static void makeHttpCall() throws IOException { |
| try { |
| System.out.println("http server listen on: " |
| + server.getAddress().getPort()); |
| URL url = new URL("http", |
| InetAddress.getLocalHost().getHostAddress(), |
| server.getAddress().getPort(), "/"); |
| HttpURLConnection uc = (HttpURLConnection)url.openConnection(); |
| if (uc.getResponseCode() != 200) |
| throw new RuntimeException("Expected Response Code was 200," |
| + "received: " + uc.getResponseCode()); |
| uc.disconnect(); |
| } finally { |
| server.stop(0); |
| } |
| } |
| |
| static class RedirectHandler implements HttpHandler { |
| |
| @Override |
| public void handle(HttpExchange exchange) throws IOException { |
| exchange.sendResponseHeaders(200, -1); |
| exchange.close(); |
| } |
| |
| } |
| |
| static class DefaultHandler implements HttpHandler { |
| |
| @Override |
| public void handle(HttpExchange exchange) throws IOException { |
| exchange.getResponseHeaders().add("Location", "/redirect"); |
| exchange.sendResponseHeaders(302, -1); |
| exchange.close(); |
| } |
| |
| } |
| |
| static class DeployCacheHandler extends java.net.ResponseCache { |
| |
| public synchronized CacheResponse get(final URI uri, String rqstMethod, |
| Map<String, List<String>> requestHeaders) throws IOException |
| { |
| System.out.println("get!!!: " + uri); |
| if (!uri.toString().endsWith("redirect")) { |
| return null; |
| } |
| System.out.println("Serving request from cache"); |
| return new DeployCacheResponse(new EmptyInputStream(), |
| new HashMap<String, List<String>>()); |
| } |
| |
| public synchronized CacheRequest put(URI uri, URLConnection conn) |
| throws IOException |
| { |
| URL url = uri.toURL(); |
| return new DeployCacheRequest(url, conn); |
| |
| } |
| } |
| |
| static class DeployCacheRequest extends java.net.CacheRequest { |
| |
| private URL _url; |
| private URLConnection _conn; |
| |
| DeployCacheRequest(URL url, URLConnection conn) { |
| _url = url; |
| _conn = conn; |
| } |
| |
| public void abort() { |
| |
| } |
| |
| public OutputStream getBody() throws IOException { |
| |
| return null; |
| } |
| } |
| |
| static class DeployCacheResponse extends java.net.CacheResponse { |
| protected InputStream is; |
| protected Map<String, List<String>> headers; |
| |
| DeployCacheResponse(InputStream is, Map<String, List<String>> headers) { |
| this.is = is; |
| this.headers = headers; |
| } |
| |
| public InputStream getBody() throws IOException { |
| return is; |
| } |
| |
| public Map<String, List<String>> getHeaders() throws IOException { |
| List<String> val = new ArrayList<>(); |
| val.add("HTTP/1.1 200 OK"); |
| headers.put(null, val); |
| return headers; |
| } |
| } |
| |
| static class EmptyInputStream extends InputStream { |
| |
| public int read() throws IOException { |
| return -1; |
| } |
| } |
| } |