netty.WebSocketRunner.java Source code

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Here is the source code for netty.WebSocketRunner.java

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/*
 * 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 netty;

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 java.io.File;

/**
 * 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 WebSocketRunner {

    static final boolean SSL = true;//System.getProperty("ssl") != null;
    static final int PORT = Integer.parseInt(System.getProperty("port", SSL ? "8443" : "8080"));

    public static void main(final String[] args) throws Exception {
        // Configure SSL.
        final SslContext sslCtx;
        if (SSL) {
            // TO GENERATE A KEY:
            /*
            openssl genrsa -des3 -out server.key 1024
            openssl req -new -key server.key -out server.csr
            cp server.key server.key.org
            openssl rsa -in server.key.org -out server.key
            openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt
            openssl pkcs8 -topk8 -nocrypt -in server.key -out serverpk8.key
            */

            File cert = new File("/Users/gigemjt/workspace/coursesketch/config/localssl/server.crt");
            File privatekey = new File("/Users/gigemjt/workspace/coursesketch/config/localssl/serverpk8.key");

            sslCtx = SslContext.newServerContext(cert, privatekey);
        } else {
            sslCtx = null;
        }

        final EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        final 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));

            final 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();
        }
    }
}