ba28679775
Motivation:
The examples have not been updated since long time ago, showing various
issues fixed in this commit.
Modifications:
- Overall simplification to reduce LoC
- Use system properties to get options instead of parsing args.
- Minimize option validation
- Just use System.out/err instead of Logger
- Do not pass config as parameters - just access it directly
- Move the main logic to main(String[]) instead of creating a new
instance meaninglessly
- Update netty-build-21 to make checkstyle not complain
- Remove 'throws Exception' clause if possible
- Line wrap at 120 (previously at 80)
- Add an option to enable SSL for most examples
- Use ChannelFuture.sync() instead of await()
- Use System.out for the actual result. Use System.err otherwise.
- Delete examples that are not very useful:
- websocket/html5
- websocketx/sslserver
- localecho/multithreaded
- Add run-example.sh which simplifies launching an example from command
line
Result:
Shorter and simpler examples. A user can focus more on what it actually
does than miscellaneous stuff. A user can launch an example very
easily.
99 lines
3.9 KiB
Java
99 lines
3.9 KiB
Java
/*
|
|
* 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 org.jboss.netty.example.local;
|
|
|
|
import org.jboss.netty.bootstrap.ClientBootstrap;
|
|
import org.jboss.netty.bootstrap.ServerBootstrap;
|
|
import org.jboss.netty.channel.ChannelFuture;
|
|
import org.jboss.netty.channel.ChannelPipeline;
|
|
import org.jboss.netty.channel.ChannelPipelineFactory;
|
|
import org.jboss.netty.channel.Channels;
|
|
import org.jboss.netty.channel.local.DefaultLocalClientChannelFactory;
|
|
import org.jboss.netty.channel.local.DefaultLocalServerChannelFactory;
|
|
import org.jboss.netty.channel.local.LocalAddress;
|
|
import org.jboss.netty.example.echo.EchoServerHandler;
|
|
import org.jboss.netty.handler.codec.string.StringDecoder;
|
|
import org.jboss.netty.handler.codec.string.StringEncoder;
|
|
import org.jboss.netty.handler.logging.LoggingHandler;
|
|
import org.jboss.netty.logging.InternalLogLevel;
|
|
|
|
import java.io.BufferedReader;
|
|
import java.io.InputStreamReader;
|
|
|
|
public final class LocalExample {
|
|
|
|
static final String PORT = System.getProperty("port", "test_port");
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
// Address to bind on / connect to.
|
|
LocalAddress socketAddress = new LocalAddress(PORT);
|
|
|
|
// Create the bootstraps for both client and server side.
|
|
ServerBootstrap sb = new ServerBootstrap(new DefaultLocalServerChannelFactory());
|
|
ClientBootstrap cb = new ClientBootstrap(new DefaultLocalClientChannelFactory());
|
|
|
|
try {
|
|
// Set up the default server-side event pipeline.
|
|
EchoServerHandler handler = new EchoServerHandler();
|
|
sb.getPipeline().addLast("handler", handler);
|
|
|
|
// Start up the server.
|
|
sb.bind(socketAddress);
|
|
|
|
// Set up the client-side pipeline factory.
|
|
cb.setPipelineFactory(new ChannelPipelineFactory() {
|
|
public ChannelPipeline getPipeline() {
|
|
return Channels.pipeline(
|
|
new StringDecoder(),
|
|
new StringEncoder(),
|
|
new LoggingHandler(InternalLogLevel.INFO));
|
|
}
|
|
});
|
|
|
|
// Make the connection attempt to the server.
|
|
ChannelFuture channelFuture = cb.connect(socketAddress);
|
|
channelFuture.sync();
|
|
|
|
// Read commands from the stdin.
|
|
System.err.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 = channelFuture.getChannel().write(line);
|
|
}
|
|
|
|
// Wait until all messages are flushed before closing the channel.
|
|
if (lastWriteFuture != null) {
|
|
lastWriteFuture.sync();
|
|
}
|
|
channelFuture.getChannel().close();
|
|
|
|
// Wait until the connection is closed or the connection attempt fails.
|
|
channelFuture.getChannel().getCloseFuture().sync();
|
|
} finally {
|
|
// Release all resources used by the local transport.
|
|
cb.releaseExternalResources();
|
|
sb.releaseExternalResources();
|
|
}
|
|
}
|
|
}
|