/*

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 *

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 * published by the Free Software Foundation.

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 * 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).

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 * 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,

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/* @test

 * @bug 8195160

 * @summary Test making lots of Selectors

 * @requires (os.family == "linux")

 * @library .. /test/lib

 * @build jdk.test.lib.Utils TestServers

 * @build RsocketTest

 * @run main/othervm Connect

 */

import java.net.InetAddress;

import java.net.InetSocketAddress;

import java.nio.ByteBuffer;

import java.nio.channels.SelectionKey;

import java.nio.channels.Selector;

import java.nio.channels.SocketChannel;

import java.util.Iterator;

import java.util.Set;

import jdk.net.RdmaSockets;

import jtreg.SkippedException;

import static java.net.StandardProtocolFamily.INET;

public class Connect {

    static int success = 0;

    static final int LIMIT = 30;

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

        if (!RsocketTest.isRsocketAvailable())

            throw new SkippedException("rsocket is not available");

        try (TestServers.DayTimeServer daytimeServer

                = TestServers.DayTimeServer.startNewServer(50)) {

            scaleTest(daytimeServer);

        }

    }

    static void scaleTest(TestServers.DayTimeServer daytimeServer)

        throws Exception

    {

        InetAddress myAddress = daytimeServer.getAddress();

        InetSocketAddress isa = new InetSocketAddress(myAddress, daytimeServer.getPort());

        for (int j=0; j<LIMIT; j++) {

            SocketChannel sc = RdmaSockets.openSocketChannel(INET);

            sc.configureBlocking(false);

            boolean connected = sc.connect(isa);

            System.out.println("connected = " + connected);

            if (!connected) {

                Selector selector = RdmaSockets.openSelector();

                sc.register(selector, SelectionKey.OP_CONNECT);

                while (!connected) {

                    int keysAdded = selector.select(100);

                    if (keysAdded > 0) {

                        Set<SelectionKey> readyKeys = selector.selectedKeys();

                        Iterator<SelectionKey> i = readyKeys.iterator();

                        while (i.hasNext()) {

                            SelectionKey sk = i.next();

                            SocketChannel nextReady = (SocketChannel)sk.channel();

                            connected = nextReady.finishConnect();

                        }

                        readyKeys.clear();

                    }

                }

                selector.close();

            }

            readAndClose(sc);

        }

    }

    static void readAndClose(SocketChannel sc) throws Exception {

        ByteBuffer bb = ByteBuffer.allocateDirect(100);

        int n = 0;

        while (n == 0) // Note this is not a rigorous check for done reading

            n = sc.read(bb);

        sc.close();

        success++;

        System.out.println("success count = " + success);

    }

}