223efc5f99
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: - applet - websocket/html5 - websocketx/sslserver - localecho/multithreaded - Add run-example.sh which simplifies launching an example from command line - Rewrite FileServer example 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.
83 lines
3.1 KiB
Java
83 lines
3.1 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 io.netty.example.http.websocketx.server;
|
|
|
|
import io.netty.bootstrap.ServerBootstrap;
|
|
import io.netty.channel.Channel;
|
|
import io.netty.channel.EventLoopGroup;
|
|
import io.netty.channel.nio.NioEventLoopGroup;
|
|
import io.netty.channel.socket.nio.NioServerSocketChannel;
|
|
import io.netty.handler.logging.LogLevel;
|
|
import io.netty.handler.logging.LoggingHandler;
|
|
import io.netty.handler.ssl.SslContext;
|
|
import io.netty.handler.ssl.util.SelfSignedCertificate;
|
|
|
|
/**
|
|
* A HTTP server which serves Web Socket requests at:
|
|
*
|
|
* http://localhost:8080/websocket
|
|
*
|
|
* Open your browser at http://localhost:8080/, then the demo page will be loaded and a Web Socket connection will be
|
|
* made automatically.
|
|
*
|
|
* This server illustrates support for the different web socket specification versions and will work with:
|
|
*
|
|
* <ul>
|
|
* <li>Safari 5+ (draft-ietf-hybi-thewebsocketprotocol-00)
|
|
* <li>Chrome 6-13 (draft-ietf-hybi-thewebsocketprotocol-00)
|
|
* <li>Chrome 14+ (draft-ietf-hybi-thewebsocketprotocol-10)
|
|
* <li>Chrome 16+ (RFC 6455 aka draft-ietf-hybi-thewebsocketprotocol-17)
|
|
* <li>Firefox 7+ (draft-ietf-hybi-thewebsocketprotocol-10)
|
|
* <li>Firefox 11+ (RFC 6455 aka draft-ietf-hybi-thewebsocketprotocol-17)
|
|
* </ul>
|
|
*/
|
|
public final class WebSocketServer {
|
|
|
|
static final boolean SSL = System.getProperty("ssl") != null;
|
|
static final int PORT = Integer.parseInt(System.getProperty("port", SSL? "8443" : "8080"));
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
// Configure SSL.
|
|
final SslContext sslCtx;
|
|
if (SSL) {
|
|
SelfSignedCertificate ssc = new SelfSignedCertificate();
|
|
sslCtx = SslContext.newServerContext(ssc.certificate(), ssc.privateKey());
|
|
} else {
|
|
sslCtx = null;
|
|
}
|
|
|
|
EventLoopGroup bossGroup = new NioEventLoopGroup(1);
|
|
EventLoopGroup workerGroup = new NioEventLoopGroup();
|
|
try {
|
|
ServerBootstrap b = new ServerBootstrap();
|
|
b.group(bossGroup, workerGroup)
|
|
.channel(NioServerSocketChannel.class)
|
|
.handler(new LoggingHandler(LogLevel.INFO))
|
|
.childHandler(new WebSocketServerInitializer(sslCtx));
|
|
|
|
Channel ch = b.bind(PORT).sync().channel();
|
|
|
|
System.err.println("Open your web browser and navigate to " +
|
|
(SSL? "https" : "http") + "://127.0.0.1:" + PORT + '/');
|
|
|
|
ch.closeFuture().sync();
|
|
} finally {
|
|
bossGroup.shutdownGracefully();
|
|
workerGroup.shutdownGracefully();
|
|
}
|
|
}
|
|
}
|