io.aos.netty5.sctp.OioSctpEchoClient.java Source code

Introduction

Here is the source code for io.aos.netty5.sctp.OioSctpEchoClient.java

Source

/*
 * 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.aos.netty5.sctp;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.oio.OioEventLoopGroup;
import io.netty.channel.sctp.SctpChannel;
import io.netty.channel.sctp.SctpChannelOption;
import io.netty.channel.sctp.oio.OioSctpChannel;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;

/**
 * Sends one message when a connection is open and echoes back any received
 * data to the server over SCTP connection.
 *
 * Simply put, the echo client initiates the ping-pong
 * traffic between the echo client and server by sending the first message to
 * the server.
 */
public class OioSctpEchoClient {

    private final String host;
    private final int port;
    private final int firstMessageSize;

    public OioSctpEchoClient(String host, int port, int firstMessageSize) {
        this.host = host;
        this.port = port;
        this.firstMessageSize = firstMessageSize;
    }

    public void run() throws Exception {
        // Configure the client.
        EventLoopGroup group = new OioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(OioSctpChannel.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());
                        }
                    });

            // Start the client.
            ChannelFuture f = b.connect(host, port).sync();

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

    public static void main(String[] args) throws Exception {
        // Print usage if no argument is specified.
        if (args.length < 2 || args.length > 3) {
            System.err.println(
                    "Usage: " + OioSctpEchoClient.class.getSimpleName() + " <host> <port> [<first message size>]");
            return;
        }

        // Parse options.
        final String host = args[0];
        final int port = Integer.parseInt(args[1]);
        final int firstMessageSize;
        if (args.length == 3) {
            firstMessageSize = Integer.parseInt(args[2]);
        } else {
            firstMessageSize = 256;
        }

        new OioSctpEchoClient(host, port, firstMessageSize).run();
    }
}