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/*
* Copyright (c) 2001, 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 4413768
* @summary Checking that PortUnreachableException is thrown when
* ICMP Port Unreachable is received.
*/
import java.net.*;
import java.util.Properties;
public class Test {
/*
* Return an available port
*/
int getPort() throws Exception {
DatagramSocket s = new DatagramSocket(0);
int port = s.getLocalPort();
s.close();
return port;
}
/*
* Perform test by sending to remote_host:port
* sendOnly => send datagram to host and expect PUE on subsequent
* send
* !sendOnly => send datagram to host and expect PUE on subsequent
* send or receive.
*/
void doTest(String remote_host, int port, boolean sendOnly) throws Exception {
System.out.println("***");
System.out.println("Test Description:");
System.out.println(" DatagramSocket.connect");
System.out.println(" Loop: DatagramSocket.send");
if (!sendOnly) {
System.out.println(" DatagramSocket.receive");
}
System.out.println("");
System.out.println("Test Run:");
InetAddress ia = InetAddress.getByName(remote_host);
DatagramSocket s = new DatagramSocket(0);
s.setSoTimeout(1000);
s.connect(ia, port);
byte[] b = "Hello".getBytes();
DatagramPacket p1 = new DatagramPacket(b, b.length, ia, port);
DatagramPacket p2 = new DatagramPacket(b, b.length);
int i = 0;
boolean gotPUE = false;
do {
System.out.println("Sending datagram to unreachable port...");
try {
s.send(p1);
} catch (PortUnreachableException e) {
System.out.println("DatagramSocket.send threw PUE");
gotPUE = true;
}
if (!gotPUE) {
Thread.currentThread().sleep(1000);
}
if (!sendOnly && !gotPUE) {
System.out.println("DatagramSocket.receive...");
try {
s.receive(p2);
} catch (PortUnreachableException e) {
System.out.println("DatagramSocket.receive threw PUE");
gotPUE = true;
} catch (SocketTimeoutException e) {
System.out.println("DatagramSocket.receive timed out - no PUE");
}
}
i++;
} while (i < 10 && !gotPUE);
if (!gotPUE) {
System.out.println("DatagramSocket.{send,receive} didn't throw " +
"PortUnreachableException - passing anyway!");
} else {
System.out.println(" Test passed.");
}
System.out.println("");
}
/*
* Perform tests via remote_host.
*/
Test(String remote_host) throws Exception {
int port = getPort();
doTest(remote_host, port, true);
doTest(remote_host, port, false);
}
public static void main(String args[]) throws Exception {
String remote_host = "localhost";
if (args.length > 0) {
remote_host = args[0];
}
new Test(remote_host);
}
}
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