1 /*
   2  * Copyright (c) 2001, 2012, 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  * @summary Test nonblocking connect and finishConnect
  26  * @bug 4457776
  27  * @library ..
  28  */
  29 
  30 import java.net.*;
  31 import java.nio.*;
  32 import java.nio.channels.*;
  33 import java.nio.channels.spi.SelectorProvider;
  34 import java.util.*;
  35 
  36 
  37 /**
  38  * Typically there would be more than one channel registered to select
  39  * on, this test is just a very simple version with only one channel
  40  * registered for the connectSelector.
  41  */
  42 
  43 public class BasicConnect {
  44 
  45     public static void main(String[] args) throws Exception {
  46         Selector connectSelector =
  47             SelectorProvider.provider().openSelector();
  48         try (TestClass.EchoServer echoServer
  49                 = TestClass.EchoServer.startNewServer(100)) {
  50             InetSocketAddress isa
  51                 = new InetSocketAddress(echoServer.getAddress(),
  52                                         echoServer.getPort());
  53             SocketChannel sc = SocketChannel.open();
  54             sc.configureBlocking(false);
  55             boolean result = sc.connect(isa);
  56             if (result) {
  57                 System.out.println("Socket immediately connected on "
  58                         + System.getProperty("os.name")
  59                         + ": " + sc);
  60             }
  61             while (!result) {
  62                 SelectionKey connectKey = sc.register(connectSelector,
  63                                                       SelectionKey.OP_CONNECT);
  64                 int keysAdded = connectSelector.select();
  65                 if (keysAdded > 0) {
  66                     Set readyKeys = connectSelector.selectedKeys();
  67                     Iterator i = readyKeys.iterator();
  68                     while (i.hasNext()) {
  69                         SelectionKey sk = (SelectionKey)i.next();
  70                         i.remove();
  71                         SocketChannel nextReady = (SocketChannel)sk.channel();
  72                         result = nextReady.finishConnect();
  73                         if (result)
  74                             sk.cancel();
  75                     }
  76                 }
  77             }
  78 
  79             byte[] bs = new byte[] { (byte)0xca, (byte)0xfe,
  80                                      (byte)0xba, (byte)0xbe };
  81             ByteBuffer bb = ByteBuffer.wrap(bs);
  82             sc.configureBlocking(true);
  83             sc.write(bb);
  84             bb.rewind();
  85 
  86             ByteBuffer bb2 = ByteBuffer.allocateDirect(100);
  87             int n = sc.read(bb2);
  88             bb2.flip();
  89 
  90             sc.close();
  91             connectSelector.close();
  92 
  93             if (!bb.equals(bb2))
  94                 throw new Exception("Echoed bytes incorrect: Sent "
  95                                     + bb + ", got " + bb2);
  96         } 
  97     }
  98 }