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/*
* Copyright (c) 2002, 2019, 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 4533243 8263364
* @summary Closing a keep alive stream should not give NullPointerException and should accept a connection from a
* client only from this test
* @library /test/lib
* @run main/othervm/timeout=30 KeepAliveStreamCloseWithWrongContentLength
*/
import java.net.*;
import java.io.*;
import jdk.test.lib.net.URIBuilder;
import java.nio.ByteBuffer;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
public class KeepAliveStreamCloseWithWrongContentLength {
private final static String path = "/KeepAliveStreamCloseWithWrongContentLength";
private final static String getRequest1stLine = "GET %s".formatted(path);
static class XServer extends Thread implements AutoCloseable {
final ServerSocket serverSocket;
volatile Socket clientSocket;
XServer (InetAddress address) throws IOException {
ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();
ServerSocket serversocket = serverSocketChannel.socket();
serversocket.bind(new InetSocketAddress(address, 0));
this.serverSocket = serversocket;
}
public int getLocalPort() {
return serverSocket.getLocalPort();
}
public void run() {
try {
ByteArrayOutputStream clientBytes;
clientSocket = null;
// in a concurrent test environment it can happen that other rouge clients connect to this server
// so we need to identify and connect only to the client from this test
// if the rouge client sends as least bytes as there is in getRequest1stLine it will be discarded and
// the test should proceed otherwise it should timeout on readNBytes below
do {
if (clientSocket != null) {
final String client = "%s:%d".formatted(
clientSocket.getInetAddress().getHostAddress(),
clientSocket.getPort()
);
try {
clientSocket.close();
}
catch (IOException ioe) {
ioe.printStackTrace();
}
finally {
System.err.println("rogue client (%s) connection attempt, ignoring".formatted(client));
}
}
clientSocket = serverSocket.accept();
// read HTTP request from client
clientBytes = new ByteArrayOutputStream();
clientBytes.write(clientSocket.getInputStream().readNBytes(getRequest1stLine.getBytes().length));
}
while(!getRequest1stLine.equals(clientBytes.toString()));
}
catch (Exception e) {
e.printStackTrace();
}
try {
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(clientSocket.getOutputStream());
outputStreamWriter.write("HTTP/1.0 200 OK\n");
// Note: The client expects 10 bytes.
outputStreamWriter.write("Content-Length: 10\n");
outputStreamWriter.write("Content-Type: text/html\n");
// Note: If this line is missing, everything works fine.
outputStreamWriter.write("Connection: Keep-Alive\n");
outputStreamWriter.write("\n");
// Note: The (buggy) server only sends 9 bytes.
outputStreamWriter.write("123456789");
outputStreamWriter.flush();
clientSocket.getChannel().shutdownOutput();
}
catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void close() throws Exception {
final var clientSocket = this.clientSocket;
try {
long drained = drain(clientSocket.getChannel());
System.err.printf("Server drained %d bytes from the channel%n", drained);
} catch (Exception x) {
System.err.println("Server failed to drain client socket: " + x);
x.printStackTrace();
}
serverSocket.close();
}
}
static long drain(SocketChannel channel) throws IOException {
if (!channel.isOpen()) return 0;
System.err.println("Not reading server: draining socket");
var blocking = channel.isBlocking();
if (blocking) channel.configureBlocking(false);
long count = 0;
try {
ByteBuffer buffer = ByteBuffer.allocateDirect(8 * 1024);
int read;
while ((read = channel.read(buffer)) > 0) {
count += read;
buffer.clear();
}
return count;
} finally {
if (blocking != channel.isBlocking()) {
channel.configureBlocking(blocking);
}
}
}
public static void main (String[] args) throws Exception {
final InetAddress loopback = InetAddress.getLoopbackAddress();
try (XServer server = new XServer(loopback)) {
server.start();
URL url = URIBuilder.newBuilder()
.scheme("http")
.loopback()
.path(path)
.port(server.getLocalPort())
.toURL();
HttpURLConnection urlc = (HttpURLConnection)url.openConnection(Proxy.NO_PROXY);
InputStream is = urlc.getInputStream();
int c = 0;
while (c != -1) {
try {
c=is.read();
System.out.println("client reads: "+c);
} catch (IOException ioe) {
is.read ();
break;
}
}
is.close();
}
}
}
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