/*
* Copyright (c) 2005, 2012, 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
* @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;
}
}
}