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.
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  23 
  24 /* @test
  25  * @bug 4640544 8044773
  26  * @summary Unit test for ServerSocketChannel 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(ServerSocketChannel ssc, SocketOption name, Object expectedValue)
  42         throws IOException
  43     {
  44         Object value = ssc.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         ServerSocketChannel ssc = ServerSocketChannel.open();
  51 
  52         // check supported options
  53         Set<SocketOption<?>> options = ssc.supportedOptions();
  54         boolean reuseport = options.contains(SO_REUSEPORT);
  55         if (!options.contains(SO_REUSEADDR))
  56             throw new RuntimeException("SO_REUSEADDR should be supported");
  57         if (!options.contains(SO_REUSEPORT) && reuseport)
  58             throw new RuntimeException("SO_REUSEPORT should be supported");
  59         if (!options.contains(SO_RCVBUF))
  60             throw new RuntimeException("SO_RCVBUF should be supported");
  61 
  62         // allowed to change when not bound
  63         ssc.setOption(SO_RCVBUF, 256*1024);     // can't check
  64         int before = ssc.getOption(SO_RCVBUF);
  65         int after = ssc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF);
  66         if (after < before)
  67             throw new RuntimeException("setOption caused SO_RCVBUF to decrease");
  68         ssc.setOption(SO_REUSEADDR, true);
  69         checkOption(ssc, SO_REUSEADDR, true);
  70         ssc.setOption(SO_REUSEADDR, false);
  71         checkOption(ssc, SO_REUSEADDR, false);
  72         if (reuseport) {
  73             ssc.setOption(SO_REUSEPORT, true);
  74             checkOption(ssc, SO_REUSEPORT, true);
  75             ssc.setOption(SO_REUSEPORT, false);
  76             checkOption(ssc, SO_REUSEPORT, false);
  77         }
  78 
  79         // NullPointerException
  80         try {
  81             ssc.setOption(null, "value");
  82             throw new RuntimeException("NullPointerException not thrown");
  83         } catch (NullPointerException x) {
  84         }
  85         try {
  86             ssc.getOption(null);
  87             throw new RuntimeException("NullPointerException not thrown");
  88         } catch (NullPointerException x) {
  89         }
  90 
  91         // ClosedChannelException
  92         ssc.close();
  93         try {
  94             ssc.setOption(SO_REUSEADDR, true);
  95             throw new RuntimeException("ClosedChannelException not thrown");
  96         } catch (ClosedChannelException x) {
  97         }
  98     }
  99 }