| /* |
| * Copyright (c) 2002, 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 4617165 |
| * @summary Ensure that socket hangups are handled correctly |
| * @library .. |
| * @build TestUtil |
| * @run main Hangup |
| */ |
| |
| import java.io.*; |
| import java.net.*; |
| import java.nio.*; |
| import java.nio.channels.*; |
| import java.util.*; |
| |
| |
| public class Hangup { |
| |
| static PrintStream log = System.err; |
| static int failures = 0; |
| |
| private static class Failure |
| extends RuntimeException |
| { |
| |
| Failure(String s) { |
| super(s); |
| } |
| |
| } |
| |
| static void doSelect(Selector sel, SelectionKey sk, int count) |
| throws IOException |
| { |
| int n = sel.select(); |
| if (n != 1) |
| throw new Failure("Select returned zero"); |
| Set sks = sel.selectedKeys(); |
| if (sks.size() != 1) |
| throw new Failure("Wrong size for selected-key set: " |
| + sks.size()); |
| if (!sks.remove(sk)) |
| throw new Failure("Key not in selected-key set"); |
| log.println("S: Socket selected #" + count); |
| } |
| |
| static void dally() { |
| try { |
| Thread.sleep(100); |
| } catch (InterruptedException x) { } |
| } |
| |
| static void test(boolean writeFromClient, boolean readAfterClose) |
| throws IOException |
| { |
| |
| ServerSocketChannel ssc = null; |
| SocketChannel cl = null; // client end |
| SocketChannel sv = null; // server end |
| Selector sel = null; |
| |
| log.println(); |
| log.println("Test: writeFromClient = " + writeFromClient |
| + ", readAfterClose = " + readAfterClose); |
| |
| try { |
| |
| int ns = 0; // Number of selection operations done |
| |
| // Set up server socket |
| ssc = ServerSocketChannel.open(); |
| SocketAddress sa = TestUtil.bindToRandomPort(ssc); |
| log.println("S: Listening on port " |
| + ssc.socket().getLocalPort()); |
| |
| // Connect client |
| cl = SocketChannel.open(sa); |
| log.println("C: Connected via port " |
| + cl.socket().getLocalPort()); |
| |
| // Accept client connection |
| sv = ssc.accept(); |
| log.println("S: Client connection accepted"); |
| |
| // Create selector and register server side |
| sel = Selector.open(); |
| sv.configureBlocking(false); |
| SelectionKey sk = sv.register(sel, SelectionKey.OP_READ); |
| |
| ByteBuffer stuff = ByteBuffer.allocate(10); |
| int n; |
| |
| if (writeFromClient) { |
| |
| // Write from client, read from server |
| |
| stuff.clear(); |
| if (cl.write(stuff) != stuff.capacity()) |
| throw new Failure("Incorrect number of bytes written"); |
| log.println("C: Wrote stuff"); |
| dally(); |
| |
| doSelect(sel, sk, ++ns); |
| |
| stuff.clear(); |
| if (sv.read(stuff) != stuff.capacity()) |
| throw new Failure("Wrong number of bytes read"); |
| log.println("S: Read stuff"); |
| } |
| |
| // Close client side |
| cl.close(); |
| log.println("C: Socket closed"); |
| dally(); |
| |
| // Select again |
| doSelect(sel, sk, ++ns); |
| |
| if (readAfterClose) { |
| // Read from client after client has disconnected |
| stuff.clear(); |
| if (sv.read(stuff) != -1) |
| throw new Failure("Wrong number of bytes read"); |
| log.println("S: Read EOF"); |
| } |
| |
| // Select a couple more times just to make sure we're doing |
| // the right thing |
| |
| doSelect(sel, sk, ++ns); |
| doSelect(sel, sk, ++ns); |
| |
| } finally { |
| if (ssc != null) |
| ssc.close(); |
| if (cl != null) |
| cl.close(); |
| if (sv != null) |
| sv.close(); |
| if (sel != null) |
| sel.close(); |
| } |
| |
| } |
| |
| public static void main(String[] args) throws IOException { |
| |
| for (boolean writeFromClient = false;; writeFromClient = true) { |
| for (boolean readAfterClose = false;; readAfterClose = true) { |
| try { |
| test(writeFromClient, readAfterClose); |
| } catch (Failure x) { |
| x.printStackTrace(log); |
| failures++; |
| } |
| if (readAfterClose) |
| break; |
| } |
| if (writeFromClient) |
| break; |
| } |
| |
| if (failures > 0) { |
| log.println(); |
| throw new RuntimeException("Some tests failed"); |
| } |
| |
| } |
| |
| } |