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 8044773 26 * @summary Unit test to check SocketChannel setOption/getOption/options 27 * methods. 28 * @run main SocketOptionTests 29 * @run main/othervm --limit-modules=java.base SocketOptionTests 30 */ 31 32 import java.nio.*; 33 import java.nio.channels.*; 34 import java.net.*; 35 import java.io.IOException; 36 import java.util.*; 37 import static java.net.StandardSocketOptions.*; 38 39 public class SocketOptionTests { 40 41 static void checkOption(SocketChannel sc, SocketOption name, Object expectedValue) 42 throws IOException 43 { 44 Object value = sc.getOption(name); 45 if (!value.equals(expectedValue)) 46 throw new RuntimeException("value not as expected"); 47 } 48 49 public static void main(String[] args) throws IOException { 50 SocketChannel sc = SocketChannel.open(); 51 52 // check supported options 53 Set<SocketOption<?>> options = sc.supportedOptions(); 54 List<? extends SocketOption> expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF, 55 SO_KEEPALIVE, SO_REUSEADDR, SO_LINGER, TCP_NODELAY); 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 int linger = sc.<Integer>getOption(SO_LINGER); 63 if (linger >= 0) 64 throw new RuntimeException("initial value of SO_LINGER should be < 0"); 65 checkOption(sc, SO_KEEPALIVE, false); 66 checkOption(sc, TCP_NODELAY, false); 67 68 // allowed to change when not bound 69 sc.setOption(SO_KEEPALIVE, true); 70 checkOption(sc, SO_KEEPALIVE, true); 71 sc.setOption(SO_KEEPALIVE, false); 72 checkOption(sc, SO_KEEPALIVE, false); 73 sc.setOption(SO_SNDBUF, 128*1024); // can't check 74 sc.setOption(SO_RCVBUF, 256*1024); // can't check 75 int before, after; 76 before = sc.getOption(SO_SNDBUF); 77 after = sc.setOption(SO_SNDBUF, Integer.MAX_VALUE).getOption(SO_SNDBUF); 78 if (after < before) 79 throw new RuntimeException("setOption caused SO_SNDBUF to decrease"); 80 before = sc.getOption(SO_RCVBUF); 81 after = sc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF); 82 if (after < before) 83 throw new RuntimeException("setOption caused SO_RCVBUF to decrease"); 84 sc.setOption(SO_REUSEADDR, true); 85 checkOption(sc, SO_REUSEADDR, true); 86 sc.setOption(SO_REUSEADDR, false); 87 checkOption(sc, SO_REUSEADDR, false); 88 sc.setOption(SO_LINGER, 10); 89 linger = sc.<Integer>getOption(SO_LINGER); 90 if (linger < 1) 91 throw new RuntimeException("expected linger to be enabled"); 92 sc.setOption(SO_LINGER, -1); 93 linger = sc.<Integer>getOption(SO_LINGER); 94 if (linger >= 0) 95 throw new RuntimeException("expected linger to be disabled"); 96 sc.setOption(TCP_NODELAY, true); 97 checkOption(sc, TCP_NODELAY, true); 98 sc.setOption(TCP_NODELAY, false); // can't check 99 100 // bind socket 101 sc.bind(new InetSocketAddress(0)); 102 103 // allow to change when bound 104 sc.setOption(SO_KEEPALIVE, true); 105 checkOption(sc, SO_KEEPALIVE, true); 106 sc.setOption(SO_KEEPALIVE, false); 107 checkOption(sc, SO_KEEPALIVE, false); 108 109 sc.setOption(SO_LINGER, 10); 110 linger = sc.<Integer>getOption(SO_LINGER); 111 if (linger < 1) 112 throw new RuntimeException("expected linger to be enabled"); 113 sc.setOption(SO_LINGER, -1); 114 linger = sc.<Integer>getOption(SO_LINGER); 115 if (linger >= 0) 116 throw new RuntimeException("expected linger to be disabled"); 117 sc.setOption(TCP_NODELAY, true); // can't check 118 sc.setOption(TCP_NODELAY, false); // can't check 119 120 // NullPointerException 121 try { 122 sc.setOption(null, "value"); 123 throw new RuntimeException("NullPointerException not thrown"); 124 } catch (NullPointerException x) { 125 } 126 try { 127 sc.getOption(null); 128 throw new RuntimeException("NullPointerException not thrown"); 129 } catch (NullPointerException x) { 130 } 131 132 // ClosedChannelException 133 sc.close(); 134 try { 135 sc.setOption(TCP_NODELAY, true); 136 throw new RuntimeException("ClosedChannelException not thrown"); 137 } catch (ClosedChannelException x) { 138 } 139 } 140 }