/*
* 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.localecho;
import io.netty.bootstrap.Bootstrap;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.local.LocalAddress;
import io.netty.channel.local.LocalChannel;
import io.netty.channel.local.LocalEventLoopGroup;
import io.netty.channel.local.LocalServerChannel;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public final class LocalEcho {
static final String PORT = System.getProperty("port", "test_port");
public static void main(String[] args) throws Exception {
// Address to bind on / connect to.
final LocalAddress addr = new LocalAddress(PORT);
EventLoopGroup serverGroup = new LocalEventLoopGroup();
EventLoopGroup clientGroup = new NioEventLoopGroup(); // NIO event loops are also OK
try {
// Note that we can use any event loop to ensure certain local channels
// are handled by the same event loop thread which drives a certain socket channel
// to reduce the communication latency between socket channels and local channels.
ServerBootstrap sb = new ServerBootstrap();
sb.group(serverGroup)
.channel(LocalServerChannel.class)
.handler(new ChannelInitializer<LocalServerChannel>() {
@Override
public void initChannel(LocalServerChannel ch) throws Exception {
ch.pipeline().addLast(new LoggingHandler(LogLevel.INFO));
}
})
.childHandler(new ChannelInitializer<LocalChannel>() {
@Override
public void initChannel(LocalChannel ch) throws Exception {
ch.pipeline().addLast(
new LoggingHandler(LogLevel.INFO),
new LocalEchoServerHandler());
}
});
Bootstrap cb = new Bootstrap();
cb.group(clientGroup)
.channel(LocalChannel.class)
.handler(new ChannelInitializer<LocalChannel>() {
@Override
public void initChannel(LocalChannel ch) throws Exception {
ch.pipeline().addLast(
new LoggingHandler(LogLevel.INFO),
new LocalEchoClientHandler());
}
});
// Start the server.
sb.bind(addr).sync();
// Start the client.
Channel ch = cb.connect(addr).sync().channel();
// Read commands from the stdin.
System.out.println("Enter text (quit to end)");
ChannelFuture lastWriteFuture = null;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
for (;;) {
String line = in.readLine();
if (line == null || "quit".equalsIgnoreCase(line)) {
break;
}
// Sends the received line to the server.
lastWriteFuture = ch.writeAndFlush(line);
}
// Wait until all messages are flushed before closing the channel.
if (lastWriteFuture != null) {
lastWriteFuture.awaitUninterruptibly();
}
} finally {
serverGroup.shutdownGracefully();
clientGroup.shutdownGracefully();
}
}
}