SCTP echo client/server multi-homing examples
Motivation: There are no Netty SCTP examples on multi-homing. Modifications: - Added new example classes based on echo client/server example Result: Better documentation
This commit is contained in:
Jestan Nirojan
Norman Maurer
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/*
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* Copyright 2015 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.example.sctp.multihoming;
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import io.netty.bootstrap.Bootstrap;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.sctp.SctpChannel;
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import io.netty.channel.sctp.SctpChannelOption;
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import io.netty.channel.sctp.nio.NioSctpChannel;
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import io.netty.example.sctp.SctpEchoClientHandler;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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/**
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* SCTP Echo Client with multi-homing support.
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*/
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public final class SctpMultiHomingEchoClient {
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private static final String CLIENT_PRIMARY_HOST = System.getProperty("host.primary", "127.0.0.1");
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private static final String CLIENT_SECONDARY_HOST = System.getProperty("host.secondary", "127.0.0.2");
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private static final int CLIENT_PORT = Integer.parseInt(System.getProperty("port.local", "8008"));
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private static final String SERVER_REMOTE_HOST = System.getProperty("host.remote", "127.0.0.1");
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private static final int SERVER_REMOTE_PORT = Integer.parseInt(System.getProperty("port.remote", "8007"));
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public static void main(String[] args) throws Exception {
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// Configure the client.
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EventLoopGroup group = new NioEventLoopGroup();
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try {
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Bootstrap b = new Bootstrap();
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b.group(group)
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.channel(NioSctpChannel.class)
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.option(SctpChannelOption.SCTP_NODELAY, true)
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.handler(new ChannelInitializer<SctpChannel>() {
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@Override
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public void initChannel(SctpChannel ch) throws Exception {
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ch.pipeline().addLast(
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// new LoggingHandler(LogLevel.INFO),
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new SctpEchoClientHandler());
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}
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});
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InetSocketAddress localAddress = new InetSocketAddress(CLIENT_PRIMARY_HOST, CLIENT_PORT);
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InetAddress localSecondaryAddress = InetAddress.getByName(CLIENT_SECONDARY_HOST);
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InetSocketAddress remoteAddress = new InetSocketAddress(SERVER_REMOTE_HOST, SERVER_REMOTE_PORT);
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// Bind the client channel.
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ChannelFuture bindFuture = b.bind(localAddress).sync();
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// Get the underlying sctp channel
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SctpChannel channel = (SctpChannel) bindFuture.channel();
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// Bind the secondary address.
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// Please note that, bindAddress in the client channel should be done before connecting if you have not
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// enable Dynamic Address Configuration. See net.sctp.addip_enable kernel param
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channel.bindAddress(localSecondaryAddress).sync();
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// Finish connect
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ChannelFuture connectFuture = channel.connect(remoteAddress).sync();
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// Wait until the connection is closed.
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connectFuture.channel().closeFuture().sync();
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} finally {
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// Shut down the event loop to terminate all threads.
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group.shutdownGracefully();
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}
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}
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}
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@ -0,0 +1,83 @@
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/*
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* Copyright 2015 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.example.sctp.multihoming;
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import io.netty.bootstrap.ServerBootstrap;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.ChannelOption;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.sctp.SctpChannel;
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import io.netty.channel.sctp.SctpServerChannel;
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import io.netty.channel.sctp.nio.NioSctpServerChannel;
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import io.netty.example.sctp.SctpEchoServerHandler;
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import io.netty.handler.logging.LogLevel;
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import io.netty.handler.logging.LoggingHandler;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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/**
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* SCTP Echo Server with multi-homing support.
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*/
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public final class SctpMultiHomingEchoServer {
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private static final String SERVER_PRIMARY_HOST = System.getProperty("host.primary", "127.0.0.1");
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private static final String SERVER_SECONDARY_HOST = System.getProperty("host.secondary", "127.0.0.2");
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private static final int SERVER_PORT = Integer.parseInt(System.getProperty("port", "8007"));
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public static void main(String[] args) throws Exception {
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// Configure the server.
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EventLoopGroup bossGroup = new NioEventLoopGroup(1);
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EventLoopGroup workerGroup = new NioEventLoopGroup();
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try {
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ServerBootstrap b = new ServerBootstrap();
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b.group(bossGroup, workerGroup)
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.channel(NioSctpServerChannel.class)
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.option(ChannelOption.SO_BACKLOG, 100)
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.handler(new LoggingHandler(LogLevel.INFO))
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.childHandler(new ChannelInitializer<SctpChannel>() {
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@Override
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public void initChannel(SctpChannel ch) throws Exception {
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ch.pipeline().addLast(
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// new LoggingHandler(LogLevel.INFO),
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new SctpEchoServerHandler());
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}
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});
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InetSocketAddress localAddress = new InetSocketAddress(SERVER_PRIMARY_HOST, SERVER_PORT);
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InetAddress localSecondaryAddress = InetAddress.getByName(SERVER_SECONDARY_HOST);
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// Bind the server to primary address.
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ChannelFuture bindFuture = b.bind(localAddress).sync();
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//Get the underlying sctp channel
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SctpServerChannel channel = (SctpServerChannel) bindFuture.channel();
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//Bind the secondary address
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ChannelFuture connectFuture = channel.bindAddress(localSecondaryAddress).sync();
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// Wait until the connection is closed.
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connectFuture.channel().closeFuture().sync();
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} finally {
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// Shut down all event loops to terminate all threads.
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bossGroup.shutdownGracefully();
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workerGroup.shutdownGracefully();
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}
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}
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}
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