Java tutorial
/* * 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 com.tcy.app.netty4; import io.netty.bootstrap.Bootstrap; import io.netty.channel.ChannelFuture; import io.netty.channel.EventLoopGroup; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.channel.socket.nio.NioSocketChannel; /** * Keeps sending random data to the specified address. */ public class Ne4Client { private final String host; private final int port; private final int firstMessageSize; public Ne4Client(String host, int port, int firstMessageSize) { this.host = host; this.port = port; this.firstMessageSize = firstMessageSize; } public void run() throws Exception { EventLoopGroup group = new NioEventLoopGroup(); try { Bootstrap b = new Bootstrap(); b.group(group).channel(NioSocketChannel.class).handler(new Ne4ClientHandler(firstMessageSize)); // Make the connection attempt. ChannelFuture f = b.connect(host, port).sync(); // Wait until the connection is closed. f.channel().closeFuture().sync(); } finally { 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: " + Ne4Client.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 Ne4Client(host, port, firstMessageSize).run(); } }