SocketOptionTests.java revision 6073:cea72c2bf071
1/* 2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. 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 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/* @test 25 * @bug 4640544 26 * @summary Unit test for setOption/getOption/options methods 27 */ 28 29import java.nio.*; 30import java.nio.channels.*; 31import java.net.*; 32import java.io.IOException; 33import java.util.*; 34import static java.net.StandardSocketOptions.*; 35 36public class SocketOptionTests { 37 38 static <T> void checkOption(DatagramChannel dc, 39 SocketOption<T> name, 40 T expectedValue) 41 throws IOException 42 { 43 T value = dc.getOption(name); 44 if (!value.equals(expectedValue)) 45 throw new RuntimeException("value not as expected"); 46 } 47 48 public static void main(String[] args) throws IOException { 49 DatagramChannel dc = DatagramChannel.open(); 50 51 // check supported options 52 Set<SocketOption<?>> options = dc.supportedOptions(); 53 List<? extends SocketOption<?>> expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF, 54 SO_REUSEADDR, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF, IP_MULTICAST_TTL, 55 IP_MULTICAST_LOOP); 56 for (SocketOption opt: expected) { 57 if (!options.contains(opt)) 58 throw new RuntimeException(opt.name() + " should be supported"); 59 } 60 61 // check specified defaults 62 checkOption(dc, SO_BROADCAST, false); 63 checkOption(dc, IP_MULTICAST_TTL, 1); // true on supported platforms 64 checkOption(dc, IP_MULTICAST_LOOP, true); // true on supported platforms 65 66 // allowed to change when not bound 67 dc.setOption(SO_BROADCAST, true); 68 checkOption(dc, SO_BROADCAST, true); 69 dc.setOption(SO_BROADCAST, false); 70 checkOption(dc, SO_BROADCAST, false); 71 dc.setOption(SO_SNDBUF, 128*1024); // can't check 72 dc.setOption(SO_RCVBUF, 128*1024); // can't check 73 int before, after; 74 before = dc.getOption(SO_SNDBUF); 75 after = dc.setOption(SO_SNDBUF, Integer.MAX_VALUE).getOption(SO_SNDBUF); 76 if (after < before) 77 throw new RuntimeException("setOption caused SO_SNDBUF to decrease"); 78 before = dc.getOption(SO_RCVBUF); 79 after = dc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF); 80 if (after < before) 81 throw new RuntimeException("setOption caused SO_RCVBUF to decrease"); 82 dc.setOption(SO_REUSEADDR, true); 83 checkOption(dc, SO_REUSEADDR, true); 84 dc.setOption(SO_REUSEADDR, false); 85 checkOption(dc, SO_REUSEADDR, false); 86 87 // bind socket 88 dc.bind(new InetSocketAddress(0)); 89 90 // allow to change when bound 91 dc.setOption(SO_BROADCAST, true); 92 checkOption(dc, SO_BROADCAST, true); 93 dc.setOption(SO_BROADCAST, false); 94 checkOption(dc, SO_BROADCAST, false); 95 dc.setOption(IP_TOS, 0x08); // can't check 96 dc.setOption(IP_MULTICAST_TTL, 2); 97 checkOption(dc, IP_MULTICAST_TTL, 2); 98 dc.setOption(IP_MULTICAST_LOOP, false); 99 checkOption(dc, IP_MULTICAST_LOOP, false); 100 dc.setOption(IP_MULTICAST_LOOP, true); 101 checkOption(dc, IP_MULTICAST_LOOP, true); 102 103 104 // NullPointerException 105 try { 106 dc.setOption(null, "value"); 107 throw new RuntimeException("NullPointerException not thrown"); 108 } catch (NullPointerException x) { 109 } 110 try { 111 dc.getOption(null); 112 throw new RuntimeException("NullPointerException not thrown"); 113 } catch (NullPointerException x) { 114 } 115 116 // ClosedChannelException 117 dc.close(); 118 try { 119 dc.setOption(IP_MULTICAST_LOOP, true); 120 throw new RuntimeException("ClosedChannelException not thrown"); 121 } catch (ClosedChannelException x) { 122 } 123 } 124} 125