/*

 * Copyright 2008-2009 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/* @test

 * @bug 4607272

 * @summary Unit test for AsynchronousServerSocketChannel

 * @run main/timeout=180 Basic

 */

import java.nio.channels.*;

import java.net.*;

import java.io.IOException;

import java.util.concurrent.ExecutionException;

import java.util.concurrent.Future;

import java.util.concurrent.atomic.AtomicReference;

public class Basic {

    public static void main(String[] args) throws Exception {

        testBind();

        testAccept();

    }

    static void testBind() throws Exception {

        System.out.println("-- bind --");

        AsynchronousServerSocketChannel ch = AsynchronousServerSocketChannel.open();

        if (ch.getLocalAddress() != null)

            throw new RuntimeException("Local address should be 'null'");

        ch.bind(new InetSocketAddress(0), 20);

        // check local address after binding

        InetSocketAddress local = (InetSocketAddress)ch.getLocalAddress();

        if (local.getPort() == 0)

            throw new RuntimeException("Unexpected port");

        if (!local.getAddress().isAnyLocalAddress())

            throw new RuntimeException("Not bound to a wildcard address");

        // try to re-bind

        try {

            ch.bind(new InetSocketAddress(0));

            throw new RuntimeException("AlreadyBoundException expected");

        } catch (AlreadyBoundException x) {

        }

        ch.close();

        // check ClosedChannelException

        ch = AsynchronousServerSocketChannel.open();

        ch.close();

        try {

            ch.bind(new InetSocketAddress(0));

            throw new RuntimeException("ClosedChannelException  expected");

        } catch (ClosedChannelException  x) {

        }

    }

    static void testAccept() throws Exception {

        System.out.println("-- accept --");

        final AsynchronousServerSocketChannel listener =

            AsynchronousServerSocketChannel.open().bind(new InetSocketAddress(0));

        InetAddress lh = InetAddress.getLocalHost();

        int port = ((InetSocketAddress)(listener.getLocalAddress())).getPort();

        final InetSocketAddress isa = new InetSocketAddress(lh, port);

        // establish a few loopback connections

        for (int i=0; i<100; i++) {

            SocketChannel sc = SocketChannel.open(isa);

            AsynchronousSocketChannel ch = listener.accept().get();

            sc.close();

            ch.close();

        }

       final AtomicReference<Throwable> exception = new AtomicReference<Throwable>();

        // start accepting

        listener.accept(null, new CompletionHandler<AsynchronousSocketChannel,Void>() {

            public void completed(AsynchronousSocketChannel ch, Void att) {

                try {

                    ch.close();

                } catch (IOException ignore) { }

            }

            public void failed(Throwable exc, Void att) {

                exception.set(exc);

            }

            public void cancelled(Void att) {

            }

        });

        // check AcceptPendingException

        try {

            listener.accept();

            throw new RuntimeException("AcceptPendingException expected");

        } catch (AcceptPendingException x) {

        }

        // asynchronous close

        listener.close();

        while (exception.get() == null)

            Thread.sleep(100);

        if (!(exception.get() instanceof AsynchronousCloseException))

            throw new RuntimeException("AsynchronousCloseException expected");

        // once closed when a further attemt should throw ClosedChannelException

        try {

            listener.accept().get();

            throw new RuntimeException("ExecutionException expected");

        } catch (ExecutionException x) {

            if (!(x.getCause() instanceof ClosedChannelException))

                throw new RuntimeException("Cause of ClosedChannelException expected");

        } catch (InterruptedException x) {

        }

    }

}