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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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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 io.netty.example.uptime;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.timeout.IdleStateHandler;


/**
 * Connects to a server periodically to measure and print the uptime of the
 * server.  This example demonstrates how to implement reliable reconnection
 * mechanism in Netty.
 */
public final class UptimeClient {

    static final String HOST = System.getProperty("host", "127.0.0.1");
    static final int PORT = Integer.parseInt(System.getProperty("port", "8080"));
    // Sleep 5 seconds before a reconnection attempt.
    static final int RECONNECT_DELAY = Integer.parseInt(System.getProperty("reconnectDelay", "5"));
    // Reconnect when the server sends nothing for 10 seconds.
    private static final int READ_TIMEOUT = Integer.parseInt(System.getProperty("readTimeout", "10"));

    private static final UptimeClientHandler handler = new UptimeClientHandler();
    private static final Bootstrap bs = new Bootstrap();

    public static void main(String[] args) throws Exception {
        EventLoopGroup group = new NioEventLoopGroup();
        bs.group(group)
                .channel(NioSocketChannel.class)
                .remoteAddress(HOST, PORT)
                .handler(new ChannelInitializer() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new IdleStateHandler(READ_TIMEOUT, 0, 0), handler);
                    }
                });
        bs.connect();
    }

    static void connect() {
        bs.connect().addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture future) throws Exception {
                if (future.cause() != null) {
                    handler.startTime = -1;
                    handler.println("Failed to connect: " + future.cause());
                }
            }
        });
    }
}