/*

 * Copyright 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 4927640

 * @summary Tests the SCTP protocol implementation

 * @author chegar

 */

import java.net.InetSocketAddress;

import java.net.SocketAddress;

import java.io.IOException;

import java.util.concurrent.Callable;

import java.util.concurrent.CountDownLatch;

import java.nio.channels.AlreadyConnectedException;

import java.nio.channels.ClosedChannelException;

import java.nio.channels.ConnectionPendingException;

import java.nio.channels.NoConnectionPendingException;

import java.nio.channels.UnresolvedAddressException;

import java.nio.channels.UnsupportedAddressTypeException;

import com.sun.nio.sctp.SctpChannel;

import com.sun.nio.sctp.SctpServerChannel;

import static java.lang.System.out;

import static java.lang.System.err;

/**

 * Tests connect, finishConnect, isConnectionPending,

 * getRemoteAddresses and association.

 */

public class Connect {

    final CountDownLatch finishedLatch = new CountDownLatch(1);

    void test(String[] args) {

        SocketAddress address = null;

        Server server = null;

        if (!Util.isSCTPSupported()) {

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

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

            return;

        }

        if (args.length == 2) {

            /* requested to connect to a specific address */

            try {

                int port = Integer.valueOf(args[1]);

                address = new InetSocketAddress(args[0], port);

            } catch (NumberFormatException nfe) {

                err.println(nfe);

            }

        } else {

            /* start server on local machine, default */

            try {

                server = new Server();

                server.start();

                address = server.address();

                debug("Server started and listening on " + address);

            } catch (IOException ioe) {

                ioe.printStackTrace();

                return;

            }

        }

        doTest(address);

    }

    void doTest(SocketAddress addr) {

        SctpChannel channel = null;

        final SocketAddress peerAddress = addr;

        try {

            channel = SctpChannel.open();

            /* TEST 0.5 Verify default values for new/unconnected channel */

            check(channel.getRemoteAddresses().isEmpty(),

                    "non empty set for unconnected channel");

            check(channel.association() == null,

                    "non-null association for unconnected channel");

            check(!channel.isConnectionPending(),

                    "should not have a connection pending");

            /* TEST 1: non-blocking connect */

            channel.configureBlocking(false);

            if (channel.connect(peerAddress) != true) {

                debug("non-blocking connect did not immediately succeed");

                check(channel.isConnectionPending(),

                        "should return true for isConnectionPending");

                try {

                    channel.connect(peerAddress);

                    fail("should have thrown ConnectionPendingException");

                } catch (ConnectionPendingException cpe) {

                    pass();

                } catch (IOException ioe) {

                    unexpected(ioe);

                }

                channel.configureBlocking(true);

                check(channel.finishConnect(),

                        "finishConnect should have returned true");

            }

            /* TEST 1.5 Verify after connect */

            check(!channel.getRemoteAddresses().isEmpty(),

                    "empty set for connected channel");

            check(channel.association() != null,

                    "null association for connected channel");

            check(!channel.isConnectionPending(),

                    "pending connection for connected channel");

            /* TEST 2: Verify AlreadyConnectedException thrown */

            try {

                channel.connect(peerAddress);

                fail("should have thrown AlreadyConnectedException");

            } catch (AlreadyConnectedException unused) {

                pass();

            }  catch (IOException ioe) {

                unexpected(ioe);

            }

            /* TEST 3: UnresolvedAddressException */

            channel.close();

            channel = SctpChannel.open();

            InetSocketAddress unresolved =

                    InetSocketAddress.createUnresolved("xxyyzzabc", 4567);

            try {

                channel.connect(unresolved);

                fail("should have thrown UnresolvedAddressException");

            } catch (UnresolvedAddressException unused) {

                pass();

            }  catch (IOException ioe) {

                unexpected(ioe);

            }

            /* TEST 4: UnsupportedAddressTypeException */

            SocketAddress unsupported = new UnsupportedSocketAddress();

            try {

                channel.connect(unsupported);

                fail("should have thrown UnsupportedAddressTypeException");

            } catch (UnsupportedAddressTypeException unused) {

                pass();

            }  catch (IOException ioe) {

                unexpected(ioe);

            }

            /* TEST 5: ClosedChannelException */

            channel.close();

            final SctpChannel closedChannel = channel;

            testCCE(new Callable<Void>() {

                public Void call() throws IOException {

                    closedChannel.connect(peerAddress); return null; } });

            /* TEST 5.5 getRemoteAddresses */

            testCCE(new Callable<Void>() {

                public Void call() throws IOException {

                    closedChannel.getRemoteAddresses(); return null; } });

            testCCE(new Callable<Void>() {

                public Void call() throws IOException {

                    closedChannel.association(); return null; } });

            check(!channel.isConnectionPending(),

                    "pending connection for closed channel");

            /* Run some more finishConnect tests */

            /* TEST 6: NoConnectionPendingException */

            channel = SctpChannel.open();

            try {

                channel.finishConnect();

                fail("should have thrown NoConnectionPendingException");

            } catch (NoConnectionPendingException unused) {

                pass();

            }  catch (IOException ioe) {

                unexpected(ioe);

            }

            /* TEST 7: ClosedChannelException */

            channel.close();

            final SctpChannel cceChannel = channel;

            testCCE(new Callable<Void>() {

                public Void call() throws IOException {

                    cceChannel.finishConnect(); return null; } });

        } catch (IOException ioe) {

            unexpected(ioe);

        } finally {

            finishedLatch.countDown();

            try { if (channel != null) channel.close(); }

            catch (IOException e) { unexpected(e);}

        }

    }

    class UnsupportedSocketAddress extends SocketAddress { }

    void testCCE(Callable callable) {

        try {

            callable.call();

            fail("should have thrown ClosedChannelException");

        } catch (ClosedChannelException cce) {

           pass();

        } catch (Exception ioe) {

            unexpected(ioe);

        }

    }

    class Server implements Runnable

    {

        final InetSocketAddress serverAddr;

        private SctpServerChannel ssc;

        public Server() throws IOException {

            ssc = SctpServerChannel.open().bind(null);

            java.util.Set<SocketAddress> addrs = ssc.getAllLocalAddresses();

            if (addrs.isEmpty())

                debug("addrs should not be empty");

            serverAddr = (InetSocketAddress) addrs.iterator().next();

        }

        public void start() {

            (new Thread(this, "Server-"  + serverAddr.getPort())).start();

        }

        public InetSocketAddress address() {

            return serverAddr;

        }

        @Override

        public void run() {

            SctpChannel sc = null;

            try {

                sc = ssc.accept();

                finishedLatch.await();

            } catch (IOException ioe) {

                unexpected(ioe);

            } catch (InterruptedException ie) {

                unexpected(ie);

            } finally {

                try { if (ssc != null) ssc.close(); }

                catch (IOException  ioe) { unexpected(ioe); }

                try { if (sc != null) sc.close(); }

                catch (IOException  ioe) { unexpected(ioe); }

            }

        }

    }

        //--------------------- 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) {if(debug) { System.out.println(message); }  }

    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);}

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

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

}