e9eaba3d53
Add new traces for better diagnosis, refrain binding to the wildcard address when possible. Reviewed-by: chegar, xuelei
90 lines
2.8 KiB
Java
90 lines
2.8 KiB
Java
/*
|
|
* 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 4712609
|
|
* @summary Socket(String host, int port) throws NullPointerException if host is null
|
|
*/
|
|
|
|
import java.net.*;
|
|
import java.io.IOException;
|
|
|
|
public class NullHost {
|
|
class Server extends Thread {
|
|
private ServerSocket svr;
|
|
|
|
public Server() throws IOException {
|
|
svr = new ServerSocket();
|
|
// The client side calls Socket((String) null, ...) which
|
|
// resolves to InetAddress.getByName((String)null) which in
|
|
// turns will resolve to the loopback address
|
|
svr.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
|
|
}
|
|
|
|
public int getPort() {
|
|
return svr.getLocalPort();
|
|
}
|
|
|
|
volatile boolean done;
|
|
public void shutdown() {
|
|
try {
|
|
done = true;
|
|
svr.close();
|
|
} catch (IOException e) {
|
|
}
|
|
}
|
|
|
|
public void run() {
|
|
Socket s;
|
|
try {
|
|
while (!done) {
|
|
s = svr.accept();
|
|
s.close();
|
|
}
|
|
} catch (IOException e) {
|
|
if (!done) e.printStackTrace();
|
|
}
|
|
}
|
|
}
|
|
|
|
public static void main(String[] args) throws IOException {
|
|
NullHost n = new NullHost();
|
|
}
|
|
|
|
public NullHost () throws IOException {
|
|
Server s = new Server();
|
|
int port = s.getPort();
|
|
s.start();
|
|
try {
|
|
try (var sock = new Socket((String)null, port)) {}
|
|
try (var sock = new Socket((String)null, port, true)) {}
|
|
try (var sock = new Socket((String)null, port, null, 0)) {}
|
|
} catch (NullPointerException e) {
|
|
throw new RuntimeException("Got a NPE");
|
|
} finally {
|
|
s.shutdown();
|
|
}
|
|
}
|
|
}
|