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      1 /*
      2  * Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  *   - Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  *
     11  *   - Redistributions in binary form must reproduce the above copyright
     12  *     notice, this list of conditions and the following disclaimer in the
     13  *     documentation and/or other materials provided with the distribution.
     14  *
     15  *   - Neither the name of Oracle nor the names of its
     16  *     contributors may be used to endorse or promote products derived
     17  *     from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
     20  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * This source code is provided to illustrate the usage of a given feature
     34  * or technique and has been deliberately simplified. Additional steps
     35  * required for a production-quality application, such as security checks,
     36  * input validation and proper error handling, might not be present in
     37  * this sample code.
     38  */
     39 
     40 
     41 import java.io.*;
     42 import java.nio.channels.*;
     43 import javax.net.ssl.*;
     44 
     45 /**
     46  * A single threaded Handler that performs accepts SocketChannels and
     47  * registers the Channels with the read/write Selector.
     48  *
     49  * @author Mark Reinhold
     50  * @author Brad R. Wetmore
     51  */
     52 class AcceptHandler implements Handler {
     53 
     54     private ServerSocketChannel channel;
     55     private Dispatcher dsp;
     56 
     57     private SSLContext sslContext;
     58 
     59     AcceptHandler(ServerSocketChannel ssc, Dispatcher dsp,
     60             SSLContext sslContext) {
     61         channel = ssc;
     62         this.dsp = dsp;
     63         this.sslContext = sslContext;
     64     }
     65 
     66     public void handle(SelectionKey sk) throws IOException {
     67 
     68         if (!sk.isAcceptable())
     69             return;
     70 
     71         SocketChannel sc = channel.accept();
     72         if (sc == null) {
     73             return;
     74         }
     75 
     76         ChannelIO cio = (sslContext != null ?
     77             ChannelIOSecure.getInstance(
     78                 sc, false /* non-blocking */, sslContext) :
     79             ChannelIO.getInstance(
     80                 sc, false /* non-blocking */));
     81 
     82         RequestHandler rh = new RequestHandler(cio);
     83         dsp.register(cio.getSocketChannel(), SelectionKey.OP_READ, rh);
     84     }
     85 }
     86