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
  26  * @summary Unit test for ServerSocketChannel setOption/getOption/options
  27  *          methods.
  28  */
  29 
  30 import java.nio.*;
  31 import java.nio.channels.*;
  32 import java.net.*;
  33 import java.io.IOException;
  34 import java.util.*;
  35 import static java.net.StandardSocketOptions.*;
  36 
  37 public class SocketOptionTests {
  38 
  39     static void checkOption(ServerSocketChannel ssc, SocketOption name, Object expectedValue)
  40         throws IOException
  41     {
  42         Object value = ssc.getOption(name);
  43         if (!value.equals(expectedValue))
  44             throw new RuntimeException("value not as expected");
  45     }
  46 
  47     public static void main(String[] args) throws IOException {
  48         ServerSocketChannel ssc = ServerSocketChannel.open();
  49 
  50         // check supported options
  51         Set<SocketOption<?>> options = ssc.supportedOptions();
  52         boolean reuseport = options.contains(SO_REUSEPORT);
  53         if (!options.contains(SO_REUSEADDR))
  54             throw new RuntimeException("SO_REUSEADDR should be supported");
  55         if (!options.contains(SO_REUSEPORT) && reuseport)
  56             throw new RuntimeException("SO_REUSEPORT should be supported");
  57         if (!options.contains(SO_RCVBUF))
  58             throw new RuntimeException("SO_RCVBUF should be supported");
  59 
  60         // allowed to change when not bound
  61         ssc.setOption(SO_RCVBUF, 256*1024);     // can't check
  62         int before = ssc.getOption(SO_RCVBUF);
  63         int after = ssc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF);
  64         if (after < before)
  65             throw new RuntimeException("setOption caused SO_RCVBUF to decrease");
  66         ssc.setOption(SO_REUSEADDR, true);
  67         checkOption(ssc, SO_REUSEADDR, true);
  68         ssc.setOption(SO_REUSEADDR, false);
  69         checkOption(ssc, SO_REUSEADDR, false);
  70         if (reuseport) {
  71             ssc.setOption(SO_REUSEPORT, true);
  72             checkOption(ssc, SO_REUSEPORT, true);
  73             ssc.setOption(SO_REUSEPORT, false);
  74             checkOption(ssc, SO_REUSEPORT, false);
  75         }
  76 
  77         // NullPointerException
  78         try {
  79             ssc.setOption(null, "value");
  80             throw new RuntimeException("NullPointerException not thrown");
  81         } catch (NullPointerException x) {
  82         }
  83         try {
  84             ssc.getOption(null);
  85             throw new RuntimeException("NullPointerException not thrown");
  86         } catch (NullPointerException x) {
  87         }
  88 
  89         // ClosedChannelException
  90         ssc.close();
  91         try {
  92             ssc.setOption(SO_REUSEADDR, true);
  93             throw new RuntimeException("ClosedChannelException not thrown");
  94         } catch (ClosedChannelException x) {
  95         }
  96     }
  97 }