| /* |
| * Copyright (c) 2000, 2016, 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 4361783 |
| * @key intermittent |
| * @summary Test to see if ICMP Port Unreachable on non-connected |
| * DatagramSocket causes a SocketException "socket closed" |
| * exception on Windows 2000. |
| */ |
| import java.net.InetAddress; |
| import java.net.DatagramSocket; |
| import java.net.DatagramPacket; |
| |
| public class PortUnreachable { |
| |
| DatagramSocket clientSock; |
| int serverPort; |
| int clientPort; |
| |
| public void serverSend() { |
| try { |
| InetAddress addr = InetAddress.getLocalHost(); |
| Thread.currentThread().sleep(1000); |
| // send a delayed packet which should mean a delayed icmp |
| // port unreachable |
| byte b[] = "A late msg".getBytes(); |
| DatagramPacket packet = new DatagramPacket(b, b.length, addr, |
| serverPort); |
| clientSock.send(packet); |
| |
| DatagramSocket sock = new DatagramSocket(serverPort); |
| b = "Greetings from the server".getBytes(); |
| packet = new DatagramPacket(b, b.length, addr, clientPort); |
| sock.send(packet); |
| sock.close(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| PortUnreachable() throws Exception { |
| |
| clientSock = new DatagramSocket(); |
| clientPort = clientSock.getLocalPort(); |
| |
| } |
| |
| void execute () throws Exception{ |
| |
| // pick a port for the server |
| DatagramSocket sock2 = new DatagramSocket(); |
| serverPort = sock2.getLocalPort(); |
| |
| // send a burst of packets to the unbound port - we should get back |
| // icmp port unreachable messages |
| // |
| InetAddress addr = InetAddress.getLocalHost(); |
| byte b[] = "Hello me".getBytes(); |
| DatagramPacket packet = new DatagramPacket(b, b.length, addr, |
| serverPort); |
| //close just before sending |
| sock2.close(); |
| for (int i=0; i<100; i++) |
| clientSock.send(packet); |
| |
| serverSend(); |
| // try to receive |
| b = new byte[25]; |
| packet = new DatagramPacket(b, b.length, addr, serverPort); |
| clientSock.setSoTimeout(10000); |
| clientSock.receive(packet); |
| System.out.println("client received data packet " + new String(packet.getData())); |
| |
| // done |
| clientSock.close(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| PortUnreachable test = new PortUnreachable(); |
| test.execute(); |
| } |
| |
| } |