--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/net/DatagramSocket/PortUnreachable.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2000 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 4361783
+ * @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;
+import java.io.InterruptedIOException;
+
+public class PortUnreachable implements Runnable {
+
+    DatagramSocket clientSock;
+    int serverPort;
+    int clientPort;
+
+    public void run() {
+        try {
+            InetAddress addr = InetAddress.getLocalHost();
+
+            Thread.currentThread().sleep(2000);
+
+            // 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);
+
+            // wait before bringing the server up
+            Thread.currentThread().sleep(5000);
+
+            DatagramSocket sock = new DatagramSocket(serverPort);
+            b = "Grettings 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();
+
+        // pick a port for the server
+        DatagramSocket sock2 = new DatagramSocket();
+        serverPort = sock2.getLocalPort();
+        sock2.close();
+
+        // 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);
+        for (int i=0; i<100; i++)
+            clientSock.send(packet);
+
+        // start the server thread
+        Thread thr = new Thread(this);
+        thr.start();
+
+        // try to receive
+        clientSock.setSoTimeout(10000);
+        clientSock.receive(packet);
+
+        // done
+        clientSock.close();
+    }
+
+    public static void main(String[] args) throws Exception {
+        new PortUnreachable();
+    }
+
+}