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Java example source code file (SctpMultiHomingEchoClient.java)

This example Java source code file (SctpMultiHomingEchoClient.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, channelfuture, channelinitializer, client_port, client_secondary_host, exception, inetaddress, inetsocketaddress, net, network, nioeventloopgroup, override, sctpchannel, sctpmultihomingechoclient, server_remote_port, string

The SctpMultiHomingEchoClient.java Java example source code

/*
 * Copyright 2015 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.sctp.multihoming;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.sctp.SctpChannel;
import io.netty.channel.sctp.SctpChannelOption;
import io.netty.channel.sctp.nio.NioSctpChannel;
import io.netty.example.sctp.SctpEchoClientHandler;

import java.net.InetAddress;
import java.net.InetSocketAddress;

/**
 * SCTP Echo Client with multi-homing support.
 */
public final class SctpMultiHomingEchoClient {

    private static final String CLIENT_PRIMARY_HOST = System.getProperty("host.primary", "127.0.0.1");
    private static final String CLIENT_SECONDARY_HOST = System.getProperty("host.secondary", "127.0.0.2");

    private static final int CLIENT_PORT = Integer.parseInt(System.getProperty("port.local", "8008"));

    private static final String SERVER_REMOTE_HOST = System.getProperty("host.remote", "127.0.0.1");
    private static final int SERVER_REMOTE_PORT = Integer.parseInt(System.getProperty("port.remote", "8007"));

    public static void main(String[] args) throws Exception {
        // Configure the client.
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group)
             .channel(NioSctpChannel.class)
             .option(SctpChannelOption.SCTP_NODELAY, true)
             .handler(new ChannelInitializer<SctpChannel>() {
                 @Override
                 public void initChannel(SctpChannel ch) throws Exception {
                     ch.pipeline().addLast(
//                             new LoggingHandler(LogLevel.INFO),
                             new SctpEchoClientHandler());
                 }
             });

            InetSocketAddress localAddress = new InetSocketAddress(CLIENT_PRIMARY_HOST, CLIENT_PORT);
            InetAddress localSecondaryAddress = InetAddress.getByName(CLIENT_SECONDARY_HOST);

            InetSocketAddress remoteAddress = new InetSocketAddress(SERVER_REMOTE_HOST, SERVER_REMOTE_PORT);

            // Bind the client channel.
            ChannelFuture bindFuture = b.bind(localAddress).sync();

            // Get the underlying sctp channel
            SctpChannel channel = (SctpChannel) bindFuture.channel();

            // Bind the secondary address.
            // Please note that, bindAddress in the client channel should be done before connecting if you have not
            // enable Dynamic Address Configuration. See net.sctp.addip_enable kernel param
            channel.bindAddress(localSecondaryAddress).sync();

            // Finish connect
            ChannelFuture connectFuture = channel.connect(remoteAddress).sync();

            // Wait until the connection is closed.
            connectFuture.channel().closeFuture().sync();
        } finally {
            // Shut down the event loop to terminate all threads.
            group.shutdownGracefully();
        }
    }
}

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