1 /*
   2  * Copyright (c) 2016, 2018, 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
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  22  */
  23 
  24 /* @test
  25  * @bug 8195160
  26  * @summary Unit test for socket channels
  27  * @requires (os.family == "linux")
  28  * @library .. /test/lib
  29  * @build RsocketTest
  30  * @run main/othervm -Djava.net.preferIPv4Stack=true MinimumRcvBufferSize
  31  */
  32 import java.nio.channels.*;
  33 import java.net.*;
  34 import jdk.net.Sockets;
  35 
  36 public class MinimumRcvBufferSize {
  37 
  38     public static void main(String args[]) throws Exception {
  39         if (!RsocketTest.isRsocketAvailable())
  40             return;
  41 
  42         boolean error = false;
  43         ServerSocketChannel channel = Sockets.openRdmaServerSocketChannel();
  44         int before = channel.getOption(StandardSocketOptions.SO_RCVBUF);
  45         channel.setOption(StandardSocketOptions.SO_RCVBUF, Integer.MAX_VALUE);
  46         int after = channel.getOption(StandardSocketOptions.SO_RCVBUF);
  47         if (before > after) {
  48             System.err.println("Test failed: SO_RCVBUF");
  49             error = true;
  50         }
  51 
  52         SocketChannel channel1 = Sockets.openRdmaSocketChannel();
  53         before = channel1.getOption(StandardSocketOptions.SO_SNDBUF);
  54         channel1.setOption(StandardSocketOptions.SO_SNDBUF, Integer.MAX_VALUE);
  55         after = channel1.getOption(StandardSocketOptions.SO_SNDBUF);
  56         if (before > after) {
  57             System.err.println("Test failed: SO_SNDBUF");
  58             error = true;
  59         }
  60         if (error)
  61             throw new RuntimeException("Test failed");
  62     }
  63 }