/*

 * Copyright (c) 1998, 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.

 *

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 */

/**

 * @test

 * @bug 4163126 8222829

 * @summary Test to see if timeout hangs. Also checks that

 * negative timeout value fails as expected.

 * @run testng DatagramTimeout

 */

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.SocketTimeoutException;

import java.nio.channels.DatagramChannel;

import org.testng.annotations.Test;

import static org.testng.Assert.expectThrows;

public class DatagramTimeout {

    private static final Class<IllegalArgumentException> IAE = IllegalArgumentException.class;

    private static final Class<SocketTimeoutException> STE = SocketTimeoutException.class;

    /**

     * Test DatagramSocket setSoTimeout with a valid timeout value.

     */

    @Test

    public void testSetTimeout() throws Exception {

        try (DatagramSocket s = new DatagramSocket()) {

            byte[] buffer = new byte[50];

            DatagramPacket p = new DatagramPacket(buffer, buffer.length);

            s.setSoTimeout(2);

            expectThrows(STE, () -> s.receive(p));

        }

    }

    /**

     * Test DatagramSocket setSoTimeout with a negative timeout.

     */

    @Test

    public void testSetNegativeTimeout() throws Exception {

        try (DatagramSocket s = new DatagramSocket()) {

            expectThrows(IAE, () -> s.setSoTimeout(-1));

        }

    }

    /**

     * Test DatagramSocketAdaptor setSoTimeout with a negative timeout.

     */

    @Test

    public void testNegativeTimeout() throws Exception {

        try (DatagramChannel dc = DatagramChannel.open()) {

            var s = dc.socket();

            expectThrows(IAE, () -> s.setSoTimeout(-1));

        }

    }

}