SocketOptionTests.java revision 893:f06f30b29f36
1/* 2 * Copyright 2007-2009 Sun Microsystems, Inc. All Rights Reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 */ 23 24/* @test 25 * @bug 4640544 26 * @summary Unit test to check SocketChannel setOption/getOption/options 27 * methods. 28 */ 29 30import java.nio.*; 31import java.nio.channels.*; 32import java.net.*; 33import java.io.IOException; 34import java.util.*; 35import static java.net.StandardSocketOption.*; 36 37public class SocketOptionTests { 38 39 static void checkOption(SocketChannel sc, SocketOption name, Object expectedValue) 40 throws IOException 41 { 42 Object value = sc.getOption(name); 43 if (!value.equals(expectedValue)) 44 throw new RuntimeException("value not as expected"); 45 } 46 47 public static void main(String[] args) throws IOException { 48 SocketChannel sc = SocketChannel.open(); 49 50 // check supported options 51 Set<SocketOption<?>> options = sc.supportedOptions(); 52 List<? extends SocketOption> expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF, 53 SO_KEEPALIVE, SO_REUSEADDR, SO_LINGER, TCP_NODELAY); 54 for (SocketOption opt: expected) { 55 if (!options.contains(opt)) 56 throw new RuntimeException(opt.name() + " should be supported"); 57 } 58 59 // check specified defaults 60 int linger = sc.<Integer>getOption(SO_LINGER); 61 if (linger >= 0) 62 throw new RuntimeException("initial value of SO_LINGER should be < 0"); 63 checkOption(sc, SO_KEEPALIVE, false); 64 checkOption(sc, TCP_NODELAY, false); 65 66 // allowed to change when not bound 67 sc.setOption(SO_KEEPALIVE, true); 68 checkOption(sc, SO_KEEPALIVE, true); 69 sc.setOption(SO_KEEPALIVE, false); 70 checkOption(sc, SO_KEEPALIVE, false); 71 sc.setOption(SO_SNDBUF, 128*1024); // can't check 72 sc.setOption(SO_RCVBUF, 256*1024); // can't check 73 sc.setOption(SO_REUSEADDR, true); 74 checkOption(sc, SO_REUSEADDR, true); 75 sc.setOption(SO_REUSEADDR, false); 76 checkOption(sc, SO_REUSEADDR, false); 77 sc.setOption(SO_LINGER, 10); 78 linger = sc.<Integer>getOption(SO_LINGER); 79 if (linger < 1) 80 throw new RuntimeException("expected linger to be enabled"); 81 sc.setOption(SO_LINGER, -1); 82 linger = sc.<Integer>getOption(SO_LINGER); 83 if (linger >= 0) 84 throw new RuntimeException("expected linger to be disabled"); 85 sc.setOption(TCP_NODELAY, true); 86 checkOption(sc, TCP_NODELAY, true); 87 sc.setOption(TCP_NODELAY, false); // can't check 88 89 // bind socket 90 sc.bind(new InetSocketAddress(0)); 91 92 // allow to change when bound 93 sc.setOption(SO_KEEPALIVE, true); 94 checkOption(sc, SO_KEEPALIVE, true); 95 sc.setOption(SO_KEEPALIVE, false); 96 checkOption(sc, SO_KEEPALIVE, false); 97 98 sc.setOption(SO_LINGER, 10); 99 linger = sc.<Integer>getOption(SO_LINGER); 100 if (linger < 1) 101 throw new RuntimeException("expected linger to be enabled"); 102 sc.setOption(SO_LINGER, -1); 103 linger = sc.<Integer>getOption(SO_LINGER); 104 if (linger >= 0) 105 throw new RuntimeException("expected linger to be disabled"); 106 sc.setOption(TCP_NODELAY, true); // can't check 107 sc.setOption(TCP_NODELAY, false); // can't check 108 109 // NullPointerException 110 try { 111 sc.setOption(null, "value"); 112 throw new RuntimeException("NullPointerException not thrown"); 113 } catch (NullPointerException x) { 114 } 115 try { 116 sc.getOption(null); 117 throw new RuntimeException("NullPointerException not thrown"); 118 } catch (NullPointerException x) { 119 } 120 121 // ClosedChannelException 122 sc.close(); 123 try { 124 sc.setOption(TCP_NODELAY, true); 125 throw new RuntimeException("ClosedChannelException not thrown"); 126 } catch (ClosedChannelException x) { 127 } 128 } 129} 130