| /* |
| * Copyright (c) 2000, 2010, 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 |
| * @summary Test Selector with ServerSocketChannels |
| * @library .. |
| */ |
| |
| import java.io.*; |
| import java.net.*; |
| import java.nio.*; |
| import java.nio.channels.*; |
| import java.nio.channels.spi.SelectorProvider; |
| import java.util.*; |
| |
| |
| public class BasicAccept { |
| |
| static void server(ServerSocketChannel ssc) throws Exception { |
| Selector acceptSelector = Selector.open(); |
| try { |
| ssc.configureBlocking(false); |
| SelectionKey acceptKey |
| = ssc.register(acceptSelector, SelectionKey.OP_ACCEPT); |
| for (;;) { |
| int n = acceptSelector.select(); |
| if (Thread.interrupted()) |
| break; |
| if (n == 0) |
| continue; |
| Set<SelectionKey> readyKeys = acceptSelector.selectedKeys(); |
| Iterator<SelectionKey> i = readyKeys.iterator(); |
| while (i.hasNext()) { |
| SelectionKey sk = i.next(); |
| i.remove(); |
| ServerSocketChannel nextReady |
| = (ServerSocketChannel)sk.channel(); |
| SocketChannel sc = nextReady.accept(); |
| ByteBuffer bb = ByteBuffer.wrap(new byte[] { 42 }); |
| sc.write(bb); |
| sc.close(); |
| } |
| } |
| } finally { |
| acceptSelector.close(); |
| } |
| } |
| |
| private static class Server extends TestThread { |
| final ServerSocketChannel ssc; |
| Server() throws IOException { |
| super("Server", System.err); |
| this.ssc = ServerSocketChannel.open() |
| .bind(new InetSocketAddress(0)); |
| } |
| int port() { |
| return ssc.socket().getLocalPort(); |
| } |
| void go() throws Exception { |
| try { |
| server(ssc); |
| } finally { |
| ssc.close(); |
| } |
| } |
| } |
| |
| static void client(int port) throws Exception { |
| // Get a connection from the server |
| InetAddress lh = InetAddress.getLocalHost(); |
| InetSocketAddress isa |
| = new InetSocketAddress(lh, port); |
| int connectFailures = 0; |
| boolean result = false; |
| SocketChannel sc = SocketChannel.open(); |
| for (;;) { |
| try { |
| result = sc.connect(isa); |
| break; |
| } catch (java.net.ConnectException e) { |
| connectFailures++; |
| if (connectFailures > 30) |
| throw new RuntimeException("Cannot connect"); |
| Thread.currentThread().sleep(100); |
| sc = SocketChannel.open(); |
| } |
| } |
| if (result) { |
| System.err.println("Connected"); |
| } else { |
| // Only happens when server and client are on separate machines |
| System.err.println("Connection pending..."); |
| connectFailures = 0; |
| while (!result) { |
| try { |
| result = sc.finishConnect(); |
| if (!result) |
| System.err.println("Not finished"); |
| Thread.sleep(50); |
| } catch (java.net.ConnectException e) { |
| Thread.sleep(100); |
| connectFailures++; |
| if (connectFailures > 30) |
| throw new RuntimeException("Cannot finish connecting"); |
| } |
| } |
| System.err.println("Finished connecting"); |
| } |
| |
| ByteBuffer bb = ByteBuffer.allocateDirect(1024); |
| if (sc.read(bb) < 0) |
| throw new RuntimeException("Failed to read from server"); |
| if (bb.get(0) != 42) |
| throw new RuntimeException("Read wrong byte from server"); |
| System.err.println("Read from server"); |
| sc.close(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| Server server = new Server(); |
| server.start(); |
| try { |
| client(server.port()); |
| } finally { |
| server.interrupt(); |
| server.finish(2000); |
| } |
| } |
| |
| } |