Netty blocking I/O API test

OioServerTest.java

import java.net.InetSocketAddress;
import java.util.concurrent.Executors;

import org.jboss.netty.bootstrap.ClientBootstrap;
import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.ExceptionEvent;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
import org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
import org.jboss.netty.channel.socket.oio.OioClientSocketChannelFactory;
import org.jboss.netty.channel.socket.oio.OioServerSocketChannelFactory;
import org.jboss.netty.util.CharsetUtil;
import org.junit.Test;

public class OioServerTest {
	@Test
	public void testNio() {
		ServerBootstrap server = new ServerBootstrap(
				new NioServerSocketChannelFactory(
						Executors.newCachedThreadPool(),
						Executors.newCachedThreadPool()));

		server.setPipelineFactory(new ChannelPipelineFactory() {

			@Override
			public ChannelPipeline getPipeline() throws Exception {
				ChannelPipeline pipeline = Channels.pipeline();
				pipeline.addLast("discard", new DiscardServerHandler());
				return pipeline;
			}
		});

		Channel serverBind = server.bind(new InetSocketAddress(10000));

		ClientBootstrap client = new ClientBootstrap(
				new NioClientSocketChannelFactory(
						Executors.newCachedThreadPool(),
						Executors.newCachedThreadPool()));

		client.setPipelineFactory(new ChannelPipelineFactory() {

			@Override
			public ChannelPipeline getPipeline() throws Exception {
				ChannelPipeline pipeline = Channels.pipeline();
				return pipeline;
			}
		});

		Channel channel = client.connect(new InetSocketAddress("127.0.0.1", 10000)).awaitUninterruptibly().getChannel();
		channel.write(ChannelBuffers.copiedBuffer("foo", CharsetUtil.UTF_8));
		channel.close();
		client.releaseExternalResources();
		//Nio may pass without it. Oio will hang on server.releaseExternalResources() without closing this channel.
		serverBind.close().awaitUninterruptibly();
		server.releaseExternalResources();
	}

	@Test
	public void testOio() {
		ServerBootstrap server = new ServerBootstrap(
				new OioServerSocketChannelFactory(
						Executors.newCachedThreadPool(),
						Executors.newCachedThreadPool()));

		server.setPipelineFactory(new ChannelPipelineFactory() {

			@Override
			public ChannelPipeline getPipeline() throws Exception {
				ChannelPipeline pipeline = Channels.pipeline();
				pipeline.addLast("discard", new DiscardServerHandler());
				return pipeline;
			}
		});

		Channel serverBind = server.bind(new InetSocketAddress(10000));

		ClientBootstrap client = new ClientBootstrap(
				new OioClientSocketChannelFactory(
						Executors.newCachedThreadPool()));

		client.setPipelineFactory(new ChannelPipelineFactory() {

			@Override
			public ChannelPipeline getPipeline() throws Exception {
				ChannelPipeline pipeline = Channels.pipeline();
				pipeline.addLast("discard", new DiscardServerHandler());
				return pipeline;
			}
		});

		Channel channel = client.connect(new InetSocketAddress("127.0.0.1", 10000)).awaitUninterruptibly().getChannel();
		channel.write(ChannelBuffers.copiedBuffer("foo", CharsetUtil.UTF_8));
		channel.close();
		client.releaseExternalResources();
		//Nio may pass without it. Oio will hang on server.releaseExternalResources() without closing this channel.
		serverBind.close().awaitUninterruptibly();
		server.releaseExternalResources();
	}

	class DiscardServerHandler extends SimpleChannelUpstreamHandler {
		@Override
		public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) {
			e.getChannel().close();
		}

		@Override
		public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
			e.getChannel().close();
		}
	}
}