1 /*
   2  * Copyright (c) 2001, 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.*;
  35 import java.nio.*;
  36 import java.nio.channels.*;
  37 import java.nio.channels.spi.SelectorProvider;
  38 import java.util.*;
  39 import jdk.net.Sockets;
  40 
  41 /**
  42  * Typically there would be more than one channel registered to select
  43  * on, this test is just a very simple version with only one channel
  44  * registered for the connectSelector.
  45  */
  46 
  47 public class BasicConnect {
  48 
  49     public static void main(String[] args) throws Exception {
  50         if (!RsocketTest.isRsocketAvailable())
  51             return;
  52 
  53         Selector connectSelector =
  54             Sockets.openRdmaSelector();
  55         try (TestServers.EchoServer echoServer
  56                 = TestServers.EchoServer.startNewServer(100)) {
  57             InetSocketAddress isa
  58                 = new InetSocketAddress(echoServer.getAddress(),
  59                                         echoServer.getPort());
  60             SocketChannel sc = Sockets.openRdmaSocketChannel();
  61             sc.configureBlocking(false);
  62             boolean result = sc.connect(isa);
  63             if (result) {
  64                 System.out.println("Socket immediately connected on "
  65                         + System.getProperty("os.name")
  66                         + ": " + sc);
  67             }
  68             while (!result) {
  69                 SelectionKey connectKey = sc.register(connectSelector,
  70                                                       SelectionKey.OP_CONNECT);
  71                 int keysAdded = connectSelector.select();
  72                 if (keysAdded > 0) {
  73                     Set readyKeys = connectSelector.selectedKeys();
  74                     Iterator i = readyKeys.iterator();
  75                     while (i.hasNext()) {
  76                         SelectionKey sk = (SelectionKey)i.next();
  77                         i.remove();
  78                         SocketChannel nextReady = (SocketChannel)sk.channel();
  79                         result = nextReady.finishConnect();
  80                         if (result)
  81                             sk.cancel();
  82                     }
  83                 }
  84             }
  85 
  86             byte[] bs = new byte[] { (byte)0xca, (byte)0xfe,
  87                                      (byte)0xba, (byte)0xbe };
  88             ByteBuffer bb = ByteBuffer.wrap(bs);
  89             sc.configureBlocking(true);
  90             sc.write(bb);
  91             bb.rewind();
  92 
  93             ByteBuffer bb2 = ByteBuffer.allocateDirect(100);
  94             int n = sc.read(bb2);
  95             bb2.flip();
  96 
  97             sc.close();
  98             connectSelector.close();
  99 
 100             if (!bb.equals(bb2))
 101                 throw new Exception("Echoed bytes incorrect: Sent "
 102                                     + bb + ", got " + bb2);
 103         }
 104     }
 105 }