/*
* Copyright (c) 2005, 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
* @library ../../httptest/
* @build HttpCallback HttpServer ClosedChannelList HttpTransaction
* @run main/othervm B6299712
* @summary NullPointerException in sun.net.www.protocol.http.HttpURLConnection.followRedirect
*/
import java.net.*;
import java.io.*;
import java.util.*;
/*
* Test Description:
* - main thread run as a http client
* - another thread runs a http server, which redirect the first call to "/redirect"
* and return '200 OK' for the successive call
* - a global ResponseCache instance is installed, which return DeployCacheResponse
* for url ends with "/redirect", i.e. the url redirected to by our simple http server,
* and null for other url.
* - 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 SimpleHttpTransaction httpTrans;
static HttpServer server;
public static void main(String[] args) throws Exception {
ResponseCache.setDefault(new DeployCacheHandler());
startHttpServer();
makeHttpCall();
}
public static void startHttpServer() {
try {
httpTrans = new SimpleHttpTransaction();
server = new HttpServer(httpTrans, 1, 10, 0);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void makeHttpCall() {
try {
System.out.println("http server listen on: " + server.getLocalPort());
URL url = new URL("http" , InetAddress.getLocalHost().getHostAddress(),
server.getLocalPort(), "/");
HttpURLConnection uc = (HttpURLConnection)url.openConnection();
System.out.println(uc.getResponseCode());
} catch (IOException e) {
e.printStackTrace();
} finally {
server.terminate();
}
}
}
class SimpleHttpTransaction implements HttpCallback {
/*
* Our http server which simply redirect first call
*/
public void request(HttpTransaction trans) {
try {
String path = trans.getRequestURI().getPath();
if (path.equals("/")) {
// the first call, redirect it
String location = "/redirect";
trans.addResponseHeader("Location", location);
trans.sendResponse(302, "Moved Temporarily");
} else {
// the second call
trans.sendResponse(200, "OK");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
class DeployCacheHandler extends java.net.ResponseCache {
private boolean inCacheHandler = false;
private boolean _downloading = false;
public synchronized CacheResponse get(final URI uri, String rqstMethod,
Map requestHeaders) throws IOException {
System.out.println("get!!!: " + uri);
try {
if (!uri.toString().endsWith("redirect")) {
return null;
}
} catch (Exception e) {
e.printStackTrace();
}
return new DeployCacheResponse(new EmptyInputStream(), new HashMap());
}
public synchronized CacheRequest put(URI uri, URLConnection conn)
throws IOException {
URL url = uri.toURL();
return new DeployCacheRequest(url, conn);
}
}
class DeployCacheRequest extends java.net.CacheRequest {
private URL _url;
private URLConnection _conn;
private boolean _downloading = false;
DeployCacheRequest(URL url, URLConnection conn) {
_url = url;
_conn = conn;
}
public void abort() {
}
public OutputStream getBody() throws IOException {
return null;
}
}
class DeployCacheResponse extends java.net.CacheResponse {
protected InputStream is;
protected Map headers;
DeployCacheResponse(InputStream is, Map headers) {
this.is = is;
this.headers = headers;
}
public InputStream getBody() throws IOException {
return is;
}
public Map getHeaders() throws IOException {
return headers;
}
}
class EmptyInputStream extends InputStream {
public EmptyInputStream() {
}
public int read()
throws IOException {
return -1;
}
}