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/*
* Copyright (c) 2020, 2023, 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
* @summary Test that HTTP connections can be interrupted
* @library /test/lib
* @compile InterruptHttp.java
* @run main/othervm InterruptHttp
*/
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.net.URL;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicReference;
import jdk.test.lib.net.URIBuilder;
public class InterruptHttp {
public static void main(String[] args) throws Exception {
try (Server server = new Server().start()) {
AtomicReference<Exception> exception = new AtomicReference<>();
// http://host:port/hello
URL url = URIBuilder.newBuilder()
.scheme("http")
.loopback()
.port(server.port())
.path("/hello")
.toURL();
// start thread to connect to server
Thread thread = Thread.ofVirtual().start(() -> {
try {
try (InputStream in = url.openStream()) { }
} catch (Exception e) {
exception.set(e);
}
});
// give time for thread to block waiting for HTTP server
while (server.connectionCount() == 0) {
Thread.sleep(100);
}
thread.interrupt();
thread.join();
// HTTP request should fail with a SocketException
Exception e = exception.get();
if (!(e instanceof SocketException))
throw new RuntimeException("Expected SocketException, got: " + e);
// server should have accepted one connection
if (server.connectionCount() != 1)
throw new RuntimeException("Expected 1 HTTP connection");
}
}
/**
* Simple server that accepts connections but does not reply.
*/
static class Server implements Closeable {
private final ServerSocket listener;
private final List<Socket> connections = new CopyOnWriteArrayList<>();
Server() throws IOException {
InetAddress lb = InetAddress.getLoopbackAddress();
listener = new ServerSocket(0, -1, lb);
}
Server start() {
Thread.ofVirtual().start(this::run);
return this;
}
private void run() {
try {
while (true) {
Socket s = listener.accept();
connections.add(s);
}
} catch (Exception e) {
if (!listener.isClosed()) {
e.printStackTrace();
}
}
}
int connectionCount() {
return connections.size();
}
int port() {
return listener.getLocalPort();
}
@Override
public void close() throws IOException {
connections.forEach(s -> {
try { s.close(); } catch (Exception ignore) { }
});
listener.close();
}
}
}
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