/*

 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/* @test

 * @bug 8067846

 * @summary Test for send failed notification

 */

import com.sun.nio.sctp.*;

import java.io.IOException;

import java.net.InetAddress;

import java.net.InetSocketAddress;

import java.net.SocketAddress;

import java.nio.ByteBuffer;

import static java.lang.System.out;

import static java.nio.ByteBuffer.*;

public class SendFailed {

    static final SocketAddress remoteAddress = new InetSocketAddress(InetAddress.getLoopbackAddress(), 3000);

    static final int[] bufferSizes =

            { 20, 49, 50, 51, 100, 101, 1024, 1025, 4095, 4096, 4097, 8191, 8192, 8193};

    void test(String[] args) throws IOException {

        SocketAddress address = null;

        String os = System.getProperty("os.name").toLowerCase();

        if (!Util.isSCTPSupported()) {

            out.println("SCTP protocol is not supported");

            out.println("Test cannot be run");

            return;

        } else if (os.startsWith("sunos")) {

            out.println("Test not supported on Solaris");

            out.println("Test cannot be run");

            return;

        }

        System.out.println("remote address: " + remoteAddress);

        System.out.println("Note, remote address should not be up");

        /* combinations with various buffer sizes, and offsets */

        for (int send=0; send < bufferSizes.length; send++) {

            for (int recv=0; recv < bufferSizes.length; recv++) {

                for (boolean direct : new boolean[] {true, false})

                    runWithManyOffsets(bufferSizes[send], bufferSizes[recv], direct);

            }

        }

    }

    void runWithManyOffsets(int sendBufferSize, int recvBufferSize, boolean direct)

        throws IOException

    {

        doTest(sendBufferSize, recvBufferSize, direct, 0);

        doTest(sendBufferSize, recvBufferSize, direct, 1);

        doTest(sendBufferSize, recvBufferSize, direct, 3);

        doTest(sendBufferSize, recvBufferSize, direct, 7);

        doTest(sendBufferSize, recvBufferSize, direct, 9);

        doTest(sendBufferSize, recvBufferSize, direct, 13);

        doTest(sendBufferSize, recvBufferSize, direct, 15);

    }

    void doTest(int sendBufferSize, int recvBufferSize, boolean direct, int offset)

        throws IOException

    {

        debug("%n--- Testing with send size:[%d], recv size:[%d], offset:[%d] "

                + ", direct [%s]. ", sendBufferSize, recvBufferSize, offset, direct);

        try (SctpMultiChannel channel = SctpMultiChannel.open()) {

            MessageInfo messageInfo = MessageInfo.createOutgoing(remoteAddress, 0);

            ByteBuffer sendBuffer = filledBuffer(sendBufferSize, direct);

            debug("%nAttempting to send to %s. ", remoteAddress);

            int sent = channel.send(sendBuffer, messageInfo);

            sendBuffer.flip();

            SendFailedNotificationHandler handler =

                    new SendFailedNotificationHandler();

            ByteBuffer recvBuffer = direct ? allocateDirect(recvBufferSize)

                                           : allocate((recvBufferSize));

        }

    }

    class SendFailedNotificationHandler extends AbstractNotificationHandler<Object>

    {

        /** Reference to the buffer captured in send failed notification */

        private ByteBuffer sentBuffer;

        @Override

        public HandlerResult handleNotification(

                Notification notification, Object attachment) {

            fail("Unknown notification type");

            return HandlerResult.CONTINUE;

        }

        @Override

        public HandlerResult handleNotification(

                AssociationChangeNotification notification, Object attachment) {

            AssociationChangeNotification.AssocChangeEvent event = notification.event();

            debug("%nAssociationChangeNotification");

            debug("%n  Association: %s. ", notification.association());

            debug("%n  Event: %s. ", event);

            return HandlerResult.CONTINUE;

        }

        @Override

        public HandlerResult handleNotification(

                SendFailedNotification notification, Object attachment) {

            debug("%nSendFailedNotification: %s. ", notification);

            sentBuffer = notification.buffer();

            return HandlerResult.RETURN;

        }

        public ByteBuffer getSendFailedByteBuffer() {

            return sentBuffer;

        }

        @Override

        public HandlerResult handleNotification(

                PeerAddressChangeNotification pacn, Object attachment)

        {

            debug("%nPeerAddressChangeNotification: %s", pacn);

            return HandlerResult.CONTINUE;

        }

        @Override

        public HandlerResult handleNotification(

                ShutdownNotification notification, Object attachment) {

            debug("%nShutdownNotification");

            debug("%n  Association: %s. ", notification.association());

            return HandlerResult.CONTINUE;

        }

    }

    static ByteBuffer filledBuffer(int size, boolean direct) {

        ByteBuffer buffer = direct ? allocateDirect(size) : allocate((size));

        for (int i=0; i< size; i++)

            buffer.put((byte)i);

        buffer.flip();

        return buffer;

    }

    static void assertSameContent(ByteBuffer bb1, ByteBuffer bb2) {

        if (!bb1.equals(bb2))

            throw new RuntimeException("Buffers are not equal; bb1: " + bb1 + ", bb2: " + bb2);

    }

    //--------------------- Infrastructure ---------------------------

    boolean debug = true;

    volatile int passed = 0, failed = 0;

    void pass() {passed++;}

    void fail() {failed++; Thread.dumpStack();}

    void fail(String msg) {System.err.println(msg); fail();}

    void unexpected(Throwable t) {failed++; t.printStackTrace();}

    void check(boolean cond) {if (cond) pass(); else fail();}

    void check(boolean cond, String failMessage) {if (cond) pass(); else fail(failMessage);}

    void debug(String message, Object... args) {if(debug) { out.printf(message, args); } }

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

        Class<?> k = new Object(){}.getClass().getEnclosingClass();

        try {k.getMethod("instanceMain",String[].class)

                .invoke( k.newInstance(), (Object) args);}

        catch (Throwable e) {throw e.getCause();}}

    public void instanceMain(String[] args) throws Throwable {

        try {test(args);} catch (Throwable t) {unexpected(t);}

        out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);

        if (failed > 0) throw new AssertionError("Some tests failed");}

}