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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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test/jdk/java/net/Socket/setReuseAddress/Basic.java Normal file
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/*
* Copyright (c) 2001, 2018, 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 4476378
* @library /test/lib
* @summary Check the specific behaviour of the setReuseAddress(boolean)
* method.
* @run main Basic
* @run main/othervm -Dsun.net.useExclusiveBind Basic
* @run main/othervm -Dsun.net.useExclusiveBind=true Basic
* @run main/othervm -Djava.net.preferIPv4Stack=true Basic
* @run main/othervm -Dsun.net.useExclusiveBind
* -Djava.net.preferIPv4Stack=true Basic
* @run main/othervm -Dsun.net.useExclusiveBind=true
* -Djava.net.preferIPv4Stack=true Basic
*/
import java.net.*;
import jdk.test.lib.net.IPSupport;
public class Basic {
static int testCount = 0;
static int failures = 0;
void test(String msg) {
testCount++;
System.out.println("***************************************");
System.out.println("Test " + testCount + ": " + msg);
}
void passed() {
System.out.println("Test passed.");
}
void failed() {
failures++;
System.out.println("Test failed.");
}
void check(boolean pass) {
if (pass) {
passed();
} else {
failed();
}
}
void SocketTests() throws Exception {
Socket s1 = new Socket();
test("Socket should be created with SO_REUSEADDR disabled");
check(!s1.getReuseAddress());
test("Socket.setReuseAddress(true)");
s1.setReuseAddress(true);
check(s1.getReuseAddress());
test("Socket.setReuseAddress(false)");
s1.setReuseAddress(false);
check(!s1.getReuseAddress() );
/* bind to any port */
s1.bind( new InetSocketAddress(0) );
test("Binding Socket to port already in use should throw " +
"a BindException");
Socket s2 = new Socket();
try {
s2.bind( new InetSocketAddress(s1.getLocalPort()) );
failed();
} catch (BindException e) {
passed();
}
s2.close();
s1.close();
}
void ServerSocketTests() throws Exception {
ServerSocket s1 = new ServerSocket();
test("ServerSocket.setReuseAddress(true)");
s1.setReuseAddress(true);
check(s1.getReuseAddress());
test("Socket.setReuseAddress(false)");
s1.setReuseAddress(false);
check(!s1.getReuseAddress() );
/* bind to any port */
s1.bind( new InetSocketAddress(0) );
test("Binding ServerSocket to port already in use should throw " +
"a BindException");
ServerSocket s2 = new ServerSocket();
try {
s2.bind( new InetSocketAddress(s1.getLocalPort()) );
failed();
} catch (BindException e) {
passed();
}
s2.close();
s1.close();
}
void DatagramSocketTests() throws Exception {
DatagramSocket s1 = new DatagramSocket(null);
test("DatagramSocket should be created with SO_REUSEADDR disabled");
check(!s1.getReuseAddress());
test("DatagramSocket.setReuseAddress(true)");
s1.setReuseAddress(true);
check(s1.getReuseAddress());
test("DatagramSocket.setReuseAddress(false)");
s1.setReuseAddress(false);
check(!s1.getReuseAddress() );
/* bind to any port */
s1.bind( new InetSocketAddress(0) );
test("Binding datagram socket to port already in use should throw " +
"a BindException");
DatagramSocket s2 = new DatagramSocket(null);
try {
s2.bind( new InetSocketAddress(s1.getLocalPort()) );
failed();
} catch (BindException e) {
passed();
}
s2.close();
s1.close();
// bind with SO_REUSEADDR enabled
s1 = new DatagramSocket(null);
s1.setReuseAddress(true);
s1.bind( new InetSocketAddress(0) );
test("Bind 2 datagram sockets to the same port - second " +
"bind doesn't have SO_REUSEADDR enabled");
s2 = new DatagramSocket(null);
try {
s2.bind( new InetSocketAddress(s1.getLocalPort()) );
failed();
} catch (BindException e) {
passed();
}
s2.close();
test("Bind 2 datagram sockets to the same port - both have " +
"SO_REUSEADDR enabled");
s2 = new DatagramSocket(null);
s2.setReuseAddress(true);
try {
s2.bind( new InetSocketAddress(s1.getLocalPort()) );
passed();
} catch (BindException e) {
if (System.getProperty("sun.net.useExclusiveBind") != null) {
// exclusive bind enabled - expected result
passed();
} else {
failed();
}
}
s2.close();
s1.close();
}
void MulticastSocketTests() throws Exception {
test("Check SO_REUSEADDR is enabled in MulticastSocket()");
MulticastSocket s1 = new MulticastSocket();
check(s1.getReuseAddress());
s1.close();
test("Check that SO_REUSEADDR is not disabled by " +
"MulticastSocket.bind()");
s1 = new MulticastSocket(null);
// bind to specific address
InetSocketAddress isa = new InetSocketAddress(
InetAddress.getLocalHost(), 0);
s1.bind(isa);
check(s1.getReuseAddress());
s1.close();
}
Basic() throws Exception {
SocketTests();
ServerSocketTests();
DatagramSocketTests();
MulticastSocketTests();
System.out.println("***************************************");
System.out.println(testCount + " test(s) executed, " +
failures + " failure(s).");
if (failures > 0) {
throw new Exception(failures + " test(s) failed");
}
}
public static void main(String args[]) throws Exception {
IPSupport.throwSkippedExceptionIfNonOperational();
new Basic();
}
}