| /* |
| * Copyright (c) 2010, 2011, 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 6935563 7044870 |
| * @summary Test that Selector does not select an unconnected DatagramChannel when |
| * ICMP port unreachable received |
| */ |
| |
| import java.nio.ByteBuffer; |
| import java.nio.channels.*; |
| import java.net.*; |
| import java.io.IOException; |
| |
| public class SelectWhenRefused { |
| |
| public static void main(String[] args) throws IOException { |
| DatagramChannel dc1 = DatagramChannel.open().bind(new InetSocketAddress(0)); |
| int port = dc1.socket().getLocalPort(); |
| |
| // datagram sent to this address should be refused |
| SocketAddress refuser = new InetSocketAddress(InetAddress.getLocalHost(), port); |
| |
| DatagramChannel dc = DatagramChannel.open().bind(new InetSocketAddress(0)); |
| dc1.close(); |
| |
| Selector sel = Selector.open(); |
| try { |
| dc.configureBlocking(false); |
| dc.register(sel, SelectionKey.OP_READ); |
| |
| /* Test 1: not connected so ICMP port unreachable should not be received */ |
| sendDatagram(dc, refuser); |
| int n = sel.select(2000); |
| if (n > 0) { |
| sel.selectedKeys().clear(); |
| // BindException will be thrown if another service is using |
| // our expected refuser port, cannot run just exit. |
| DatagramChannel.open().bind(refuser).close(); |
| throw new RuntimeException("Unexpected wakeup"); |
| } |
| |
| /* Test 2: connected so ICMP port unreachable may be received */ |
| dc.connect(refuser); |
| try { |
| sendDatagram(dc, refuser); |
| n = sel.select(2000); |
| if (n > 0) { |
| sel.selectedKeys().clear(); |
| try { |
| n = dc.read(ByteBuffer.allocate(100)); |
| throw new RuntimeException("Unexpected datagram received"); |
| } catch (PortUnreachableException pue) { |
| // expected |
| } |
| } |
| } finally { |
| dc.disconnect(); |
| } |
| |
| /* Test 3: not connected so ICMP port unreachable should not be received */ |
| sendDatagram(dc, refuser); |
| n = sel.select(2000); |
| if (n > 0) { |
| throw new RuntimeException("Unexpected wakeup after disconnect"); |
| } |
| |
| } catch(BindException e) { |
| // Do nothing, some other test has used this port |
| } finally { |
| sel.close(); |
| dc.close(); |
| } |
| } |
| |
| static void sendDatagram(DatagramChannel dc, SocketAddress remote) |
| throws IOException |
| { |
| ByteBuffer bb = ByteBuffer.wrap("Greetings!".getBytes()); |
| dc.send(bb, remote); |
| } |
| } |