1/* 2 * Copyright (c) 2007, 2016, 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 8044773 26 * @summary Unit test for setOption/getOption/options methods 27 * @run main SocketOptionTests 28 * @run main/othervm --limit-modules=java.base SocketOptionTests 29 */ 30 31import java.nio.*; 32import java.nio.channels.*; 33import java.net.*; 34import java.io.IOException; 35import java.util.*; 36import static java.net.StandardSocketOptions.*; 37 38public class SocketOptionTests { 39 40 static <T> void checkOption(DatagramChannel dc, 41 SocketOption<T> name, 42 T expectedValue) 43 throws IOException 44 { 45 T value = dc.getOption(name); 46 if (!value.equals(expectedValue)) 47 throw new RuntimeException("value not as expected"); 48 } 49 50 public static void main(String[] args) throws IOException { 51 DatagramChannel dc = DatagramChannel.open(); 52 53 // check supported options 54 Set<SocketOption<?>> options = dc.supportedOptions(); 55 boolean reuseport = options.contains(SO_REUSEPORT); 56 List<? extends SocketOption<?>> expected; 57 if (reuseport) { 58 expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF, 59 SO_REUSEADDR, SO_REUSEPORT, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF, 60 IP_MULTICAST_TTL, IP_MULTICAST_LOOP); 61 } else { 62 expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF, 63 SO_REUSEADDR, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF, IP_MULTICAST_TTL, 64 IP_MULTICAST_LOOP); 65 } 66 for (SocketOption opt: expected) { 67 if (!options.contains(opt)) 68 throw new RuntimeException(opt.name() + " should be supported"); 69 } 70 71 // check specified defaults 72 checkOption(dc, SO_BROADCAST, false); 73 checkOption(dc, IP_MULTICAST_TTL, 1); // true on supported platforms 74 checkOption(dc, IP_MULTICAST_LOOP, true); // true on supported platforms 75 76 // allowed to change when not bound 77 dc.setOption(SO_BROADCAST, true); 78 checkOption(dc, SO_BROADCAST, true); 79 dc.setOption(SO_BROADCAST, false); 80 checkOption(dc, SO_BROADCAST, false); 81 dc.setOption(SO_SNDBUF, 128*1024); // can't check 82 dc.setOption(SO_RCVBUF, 128*1024); // can't check 83 int before, after; 84 before = dc.getOption(SO_SNDBUF); 85 after = dc.setOption(SO_SNDBUF, Integer.MAX_VALUE).getOption(SO_SNDBUF); 86 if (after < before) 87 throw new RuntimeException("setOption caused SO_SNDBUF to decrease"); 88 before = dc.getOption(SO_RCVBUF); 89 after = dc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF); 90 if (after < before) 91 throw new RuntimeException("setOption caused SO_RCVBUF to decrease"); 92 dc.setOption(SO_REUSEADDR, true); 93 checkOption(dc, SO_REUSEADDR, true); 94 dc.setOption(SO_REUSEADDR, false); 95 checkOption(dc, SO_REUSEADDR, false); 96 if (reuseport) { 97 dc.setOption(SO_REUSEPORT, true); 98 checkOption(dc, SO_REUSEPORT, true); 99 dc.setOption(SO_REUSEPORT, false); 100 checkOption(dc, SO_REUSEPORT, false); 101 } 102 // bind socket 103 dc.bind(new InetSocketAddress(0)); 104 105 // allow to change when bound 106 dc.setOption(SO_BROADCAST, true); 107 checkOption(dc, SO_BROADCAST, true); 108 dc.setOption(SO_BROADCAST, false); 109 checkOption(dc, SO_BROADCAST, false); 110 dc.setOption(IP_TOS, 0x08); // can't check 111 dc.setOption(IP_MULTICAST_TTL, 2); 112 checkOption(dc, IP_MULTICAST_TTL, 2); 113 dc.setOption(IP_MULTICAST_LOOP, false); 114 checkOption(dc, IP_MULTICAST_LOOP, false); 115 dc.setOption(IP_MULTICAST_LOOP, true); 116 checkOption(dc, IP_MULTICAST_LOOP, true); 117 118 119 // NullPointerException 120 try { 121 dc.setOption(null, "value"); 122 throw new RuntimeException("NullPointerException not thrown"); 123 } catch (NullPointerException x) { 124 } 125 try { 126 dc.getOption(null); 127 throw new RuntimeException("NullPointerException not thrown"); 128 } catch (NullPointerException x) { 129 } 130 131 // ClosedChannelException 132 dc.close(); 133 try { 134 dc.setOption(IP_MULTICAST_LOOP, true); 135 throw new RuntimeException("ClosedChannelException not thrown"); 136 } catch (ClosedChannelException x) { 137 } 138 } 139} 140