1 /*
   2  * Copyright (c) 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
  21  * questions.
  22  */
  23 
  24 /* @test
  25  * @bug 8195160
  26  * @summary Test for nonblocking connect and finishConnect
  27  * @requires (os.family == "linux")
  28  * @library .. /test/lib
  29  * @build jdk.test.lib.Utils TestServers
  30  * @build RsocketTest
  31  * @run main/othervm -Djava.net.preferIPv4Stack=true BasicConnect
  32  */
  33 
  34 import java.net.InetSocketAddress;
  35 import java.nio.ByteBuffer;
  36 import java.nio.channels.SelectionKey;
  37 import java.nio.channels.Selector;
  38 import java.nio.channels.SocketChannel;
  39 import java.nio.channels.spi.SelectorProvider;
  40 import java.util.Iterator;
  41 import java.util.Set;
  42 import jdk.net.Sockets;
  43 
  44 /**
  45  * Typically there would be more than one channel registered to select
  46  * on, this test is just a very simple version with only one channel
  47  * registered for the connectSelector.
  48  */
  49 
  50 public class BasicConnect {
  51 
  52     public static void main(String[] args) throws Exception {
  53         if (!RsocketTest.isRsocketAvailable())
  54             return;
  55 
  56         Selector connectSelector =
  57             Sockets.openRdmaSelector();
  58         try {
  59             TestServers.EchoServer echoServer
  60                 = TestServers.EchoServer.startNewServer(100);
  61             InetSocketAddress isa
  62                 = new InetSocketAddress(echoServer.getAddress(),
  63                                         echoServer.getPort());
  64             SocketChannel sc = Sockets.openRdmaSocketChannel();
  65             sc.configureBlocking(false);
  66             boolean result = sc.connect(isa);
  67             if (result) {
  68                 System.out.println("Socket immediately connected on "
  69                         + System.getProperty("os.name")
  70                         + ": " + sc);
  71             }
  72             while (!result) {
  73                 SelectionKey connectKey = sc.register(connectSelector,
  74                                                       SelectionKey.OP_CONNECT);
  75                 int keysAdded = connectSelector.select();
  76                 if (keysAdded > 0) {
  77                     Set readyKeys = connectSelector.selectedKeys();
  78                     Iterator i = readyKeys.iterator();
  79                     while (i.hasNext()) {
  80                         SelectionKey sk = (SelectionKey)i.next();
  81                         i.remove();
  82                         SocketChannel nextReady = (SocketChannel)sk.channel();
  83                         result = nextReady.finishConnect();
  84                         if (result)
  85                             sk.cancel();
  86                     }
  87                 }
  88             }
  89 
  90             byte[] bs = new byte[] { (byte)0xca, (byte)0xfe,
  91                                      (byte)0xba, (byte)0xbe };
  92             ByteBuffer bb = ByteBuffer.wrap(bs);
  93             sc.configureBlocking(true);
  94             sc.write(bb);
  95             bb.rewind();
  96 
  97             ByteBuffer bb2 = ByteBuffer.allocateDirect(100);
  98             int n = sc.read(bb2);
  99             bb2.flip();
 100 
 101             sc.close();
 102             connectSelector.close();
 103 
 104             if (!bb.equals(bb2))
 105                 throw new Exception("Echoed bytes incorrect: Sent "
 106                                     + bb + ", got " + bb2);
 107         } catch (Exception e) {
 108             e.printStackTrace();
 109             throw new RuntimeException("Test Failed!");
 110         } 
 111     }
 112 }