14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test
26 * @bug 4361783
27 * @summary Test to see if ICMP Port Unreachable on non-connected
28 * DatagramSocket causes a SocketException "socket closed"
29 * exception on Windows 2000.
30 */
31 import java.net.InetAddress;
32 import java.net.DatagramSocket;
33 import java.net.DatagramPacket;
34 import java.io.InterruptedIOException;
35
36 public class PortUnreachable implements Runnable {
37
38 DatagramSocket clientSock;
39 int serverPort;
40 int clientPort;
41
42 public void run() {
43 try {
44 InetAddress addr = InetAddress.getLocalHost();
45
46 Thread.currentThread().sleep(2000);
47
48 // send a delayed packet which should mean a delayed icmp
49 // port unreachable
50 byte b[] = "A late msg".getBytes();
51 DatagramPacket packet = new DatagramPacket(b, b.length, addr,
52 serverPort);
53 clientSock.send(packet);
54
55 // wait before bringing the server up
56 Thread.currentThread().sleep(5000);
57
58 DatagramSocket sock = new DatagramSocket(serverPort);
59 b = "Grettings from the server".getBytes();
60 packet = new DatagramPacket(b, b.length, addr, clientPort);
61 sock.send(packet);
62 sock.close();
63 } catch (Exception e) {
64 e.printStackTrace();
65 }
66 }
67
68 PortUnreachable() throws Exception {
69
70 clientSock = new DatagramSocket();
71 clientPort = clientSock.getLocalPort();
72
73 // pick a port for the server
74 DatagramSocket sock2 = new DatagramSocket();
75 serverPort = sock2.getLocalPort();
76 sock2.close();
77
78 // send a burst of packets to the unbound port - we should get back
79 // icmp port unreachable messages
80 //
81 InetAddress addr = InetAddress.getLocalHost();
82 byte b[] = "Hello me".getBytes();
83 DatagramPacket packet = new DatagramPacket(b, b.length, addr,
84 serverPort);
85 for (int i=0; i<100; i++)
86 clientSock.send(packet);
87
88 // start the server thread
89 Thread thr = new Thread(this);
90 thr.start();
91
92 // try to receive
93 clientSock.setSoTimeout(10000);
94 clientSock.receive(packet);
95
96 // done
97 clientSock.close();
98 }
99
100 public static void main(String[] args) throws Exception {
101 new PortUnreachable();
102 }
103
104 }
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14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test
26 * @bug 4361783
27 * @summary Test to see if ICMP Port Unreachable on non-connected
28 * DatagramSocket causes a SocketException "socket closed"
29 * exception on Windows 2000.
30 */
31 import java.net.InetAddress;
32 import java.net.DatagramSocket;
33 import java.net.DatagramPacket;
34 import java.util.concurrent.CountDownLatch;
35 import java.io.InterruptedIOException;
36
37 public class PortUnreachable implements Runnable {
38
39 DatagramSocket clientSock;
40 int serverPort;
41 int clientPort;
42 CountDownLatch clientReadyLatch;
43
44 public void run() {
45 try {
46 InetAddress addr = InetAddress.getLocalHost();
47 Thread.currentThread().sleep(1000);
48 // send a delayed packet which should mean a delayed icmp
49 // port unreachable
50 byte b[] = "A late msg".getBytes();
51 DatagramPacket packet = new DatagramPacket(b, b.length, addr,
52 serverPort);
53 clientSock.send(packet);
54
55 DatagramSocket sock = new DatagramSocket(serverPort);
56 b = "Grettings from the server".getBytes();
57 packet = new DatagramPacket(b, b.length, addr, clientPort);
58 clientReadyLatch.await();
59 sock.send(packet);
60 sock.close();
61 } catch (Exception e) {
62 e.printStackTrace();
63 }
64 }
65
66 PortUnreachable() throws Exception {
67
68 clientSock = new DatagramSocket();
69 clientPort = clientSock.getLocalPort();
70 clientReadyLatch = new CountDownLatch(1);
71
72 // pick a port for the server
73 DatagramSocket sock2 = new DatagramSocket();
74 serverPort = sock2.getLocalPort();
75
76 // send a burst of packets to the unbound port - we should get back
77 // icmp port unreachable messages
78 //
79 InetAddress addr = InetAddress.getLocalHost();
80 byte b[] = "Hello me".getBytes();
81 DatagramPacket packet = new DatagramPacket(b, b.length, addr,
82 serverPort);
83 //close just before sending
84 sock2.close();
85 for (int i=0; i<100; i++)
86 clientSock.send(packet);
87
88 // start the server thread
89 Thread serverSenderThread = new Thread(this);
90 serverSenderThread.start();
91
92 // try to receive
93 clientSock.setSoTimeout(10000);
94 clientReadyLatch.countDown();
95 clientSock.receive(packet);
96 System.out.println("client received data packet " + new String(packet.getData()));
97
98 // done
99 clientSock.close();
100 }
101
102 public static void main(String[] args) throws Exception {
103 new PortUnreachable();
104 }
105
106 }
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