1 /*
   2  * Copyright (c) 2007, 2017, 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 ServerSocketChannel setOption/getOption/options
  27  *          methods.
  28  * @requires !vm.graal.enabled
  29  * @run main SocketOptionTests
  30  * @run main/othervm --limit-modules=java.base SocketOptionTests
  31  */
  32 
  33 import java.nio.*;
  34 import java.nio.channels.*;
  35 import java.net.*;
  36 import java.io.IOException;
  37 import java.util.*;
  38 import static java.net.StandardSocketOptions.*;
  39 
  40 public class SocketOptionTests {
  41 
  42     static void checkOption(ServerSocketChannel ssc, SocketOption name, Object expectedValue)
  43         throws IOException
  44     {
  45         Object value = ssc.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         ServerSocketChannel ssc = ServerSocketChannel.open();
  52 
  53         // check supported options
  54         Set<SocketOption<?>> options = ssc.supportedOptions();
  55         boolean reuseport = options.contains(SO_REUSEPORT);
  56         if (!options.contains(SO_REUSEADDR))
  57             throw new RuntimeException("SO_REUSEADDR should be supported");
  58         if (!options.contains(SO_REUSEPORT) && reuseport)
  59             throw new RuntimeException("SO_REUSEPORT should be supported");
  60         if (!options.contains(SO_RCVBUF))
  61             throw new RuntimeException("SO_RCVBUF should be supported");
  62 
  63         // allowed to change when not bound
  64         ssc.setOption(SO_RCVBUF, 256*1024);     // can't check
  65         int before = ssc.getOption(SO_RCVBUF);
  66         int after = ssc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF);
  67         if (after < before)
  68             throw new RuntimeException("setOption caused SO_RCVBUF to decrease");
  69         ssc.setOption(SO_REUSEADDR, true);
  70         checkOption(ssc, SO_REUSEADDR, true);
  71         ssc.setOption(SO_REUSEADDR, false);
  72         checkOption(ssc, SO_REUSEADDR, false);
  73         if (reuseport) {
  74             ssc.setOption(SO_REUSEPORT, true);
  75             checkOption(ssc, SO_REUSEPORT, true);
  76             ssc.setOption(SO_REUSEPORT, false);
  77             checkOption(ssc, SO_REUSEPORT, false);
  78         }
  79 
  80         // NullPointerException
  81         try {
  82             ssc.setOption(null, "value");
  83             throw new RuntimeException("NullPointerException not thrown");
  84         } catch (NullPointerException x) {
  85         }
  86         try {
  87             ssc.getOption(null);
  88             throw new RuntimeException("NullPointerException not thrown");
  89         } catch (NullPointerException x) {
  90         }
  91 
  92         // ClosedChannelException
  93         ssc.close();
  94         try {
  95             ssc.setOption(SO_REUSEADDR, true);
  96             throw new RuntimeException("ClosedChannelException not thrown");
  97         } catch (ClosedChannelException x) {
  98         }
  99     }
 100 }