io.netty.example.udt.echo.message.MsgEchoClient Maven / Gradle / Ivy
/*
* 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.example.udt.echo.message;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.udt.UdtChannel;
import io.netty.channel.udt.nio.NioUdtProvider;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.util.concurrent.DefaultThreadFactory;
import java.util.concurrent.ThreadFactory;
import java.util.logging.Logger;
/**
* UDT Message Flow client
*
* Sends one message when a connection is open and echoes back any received data
* to the server. Simply put, the echo client initiates the ping-pong traffic
* between the echo client and server by sending the first message to the
* server.
*/
public final class MsgEchoClient {
private static final Logger log = Logger.getLogger(MsgEchoClient.class.getName());
static final String HOST = System.getProperty("host", "127.0.0.1");
static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
static final int SIZE = Integer.parseInt(System.getProperty("size", "256"));
public static void main(String[] args) throws Exception {
// Configure the client.
final ThreadFactory connectFactory = new DefaultThreadFactory("connect");
final NioEventLoopGroup connectGroup = new NioEventLoopGroup(1,
connectFactory, NioUdtProvider.MESSAGE_PROVIDER);
try {
final Bootstrap boot = new Bootstrap();
boot.group(connectGroup)
.channelFactory(NioUdtProvider.MESSAGE_CONNECTOR)
.handler(new ChannelInitializer() {
@Override
public void initChannel(final UdtChannel ch)
throws Exception {
ch.pipeline().addLast(
new LoggingHandler(LogLevel.INFO),
new MsgEchoClientHandler());
}
});
// Start the client.
final ChannelFuture f = boot.connect(HOST, PORT).sync();
// Wait until the connection is closed.
f.channel().closeFuture().sync();
} finally {
// Shut down the event loop to terminate all threads.
connectGroup.shutdownGracefully();
}
}
}