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Java example source code file (StompClient.java)

This example Java source code file (StompClient.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bootstrap, channelinitializer, channelpipeline, exception, host, login, nioeventloopgroup, override, passcode, stompclient, stompsubframeaggregator, stompsubframedecoder, stompsubframeencoder, string

The StompClient.java Java example source code

/*
 * Copyright 2014 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.stomp;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
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.codec.stomp.StompSubframeAggregator;
import io.netty.handler.codec.stomp.StompSubframeDecoder;
import io.netty.handler.codec.stomp.StompSubframeEncoder;


/**
 * very simple stomp client implementation example, requires running stomp server to actually work
 * uses default username/password and destination values from hornetq message broker
 */
public final class StompClient {

    static final boolean SSL = System.getProperty("ssl") != null;
    static final String HOST = System.getProperty("host", "127.0.0.1");
    static final int PORT = Integer.parseInt(System.getProperty("port", "61613"));
    static final String LOGIN = System.getProperty("login", "guest");
    static final String PASSCODE = System.getProperty("passcode", "guest");
    static final String TOPIC = System.getProperty("topic", "jms.topic.exampleTopic");

    public static void main(String[] args) throws Exception {
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class);
            b.handler(new ChannelInitializer<SocketChannel>() {
                @Override
                protected void initChannel(SocketChannel ch) throws Exception {
                    ChannelPipeline pipeline = ch.pipeline();
                    pipeline.addLast("decoder", new StompSubframeDecoder());
                    pipeline.addLast("encoder", new StompSubframeEncoder());
                    pipeline.addLast("aggregator", new StompSubframeAggregator(1048576));
                    pipeline.addLast("handler", new StompClientHandler());
                }
            });

            b.connect(HOST, PORT).sync().channel().closeFuture().sync();
        } finally {
            group.shutdownGracefully();
        }
    }
}

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