/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.testsuite.transport.socket;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundByteHandlerAdapter;
import io.netty.channel.ChannelOption;
import io.netty.util.NetworkConstants;

import java.net.InetSocketAddress;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CountDownLatch;

import junit.framework.Assert;

import org.junit.Test;

public class ServerSocketSuspendTest extends AbstractServerSocketTest {

    private static final int NUM_CHANNELS = 10;
    private static final long TIMEOUT = 3000000000L;

    @Test
    public void testSuspendAndResumeAccept() throws Throwable {
        run();
    }

    public void testSuspendAndResumeAccept(ServerBootstrap sb) throws Throwable {
        AcceptedChannelCounter counter = new AcceptedChannelCounter(NUM_CHANNELS);

        sb.option(ChannelOption.SO_BACKLOG, 1);
        sb.childHandler(counter);

        Channel sc = sb.bind().sync().channel();
        sc.pipeline().firstContext().readable(false);

        List<Socket> sockets = new ArrayList<Socket>();

        try {
            long startTime = System.nanoTime();
            for (int i = 0; i < NUM_CHANNELS; i ++) {
                sockets.add(new Socket(
                        NetworkConstants.LOCALHOST, ((InetSocketAddress) sc.localAddress()).getPort()));
            }

            sc.pipeline().firstContext().readable(true);
            counter.latch.await();

            long endTime = System.nanoTime();
            Assert.assertTrue(endTime - startTime > TIMEOUT);
        } finally {
            for (Socket s: sockets) {
                s.close();
            }
        }

        try {
            long startTime = System.nanoTime();
            for (int i = 0; i < NUM_CHANNELS; i ++) {
                sockets.add(new Socket(
                        NetworkConstants.LOCALHOST, ((InetSocketAddress) sc.localAddress()).getPort()));
            }
            long endTime = System.nanoTime();

            Assert.assertTrue(endTime - startTime < TIMEOUT);
        } finally {
            for (Socket s: sockets) {
                s.close();
            }
        }
    }

    @ChannelHandler.Sharable
    private final class AcceptedChannelCounter extends ChannelInboundByteHandlerAdapter {

        final CountDownLatch latch;

        AcceptedChannelCounter(int nChannels) {
            latch = new CountDownLatch(nChannels);
        }

        @Override
        public void channelActive(ChannelHandlerContext ctx) throws Exception {
            latch.countDown();
        }

        @Override
        public void inboundBufferUpdated(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
            // Unused
        }
    }
}

@@ -970,82 +970,8 @@
 on;%0A
-import io.netty.util.NetworkConstants;%0A%0Aimport java.net.InetSocketAddress;
 %0Aimp
@@ -1952,36 +1952,35 @@
             
-s
+S
 ocket
-s.add(
+ s = 
 new Socket(%0A
@@ -1970,32 +1970,34 @@
  s = new Socket(
+);
 %0A               
@@ -2001,94 +2001,61 @@
     
-        NetworkConstants.LOCALHOST, ((InetSocketAddress) sc.localAddress()).getPort())
+s.connect(addr, 10000);%0A                sockets.add(s
 );%0A 
@@ -2511,28 +2511,27 @@
         
-s
+S
 ocket
-s.add(
+ s = 
 new Sock
@@ -2533,16 +2533,18 @@
  Socket(
+);
 %0A       
@@ -2556,94 +2556,61 @@
     
-        NetworkConstants.LOCALHOST, ((InetSocketAddress) sc.localAddress()).getPort())
+s.connect(addr, 10000);%0A                sockets.add(s
 );%0A 

Simplify ServerSocketSuspendTest