com.zhuika.discard.DiscardClient.java Source code

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Here is the source code for com.zhuika.discard.DiscardClient.java

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/*
 * 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.zhuika.discard;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
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.DelimiterBasedFrameDecoder;

/**
 * Keeps sending random data to the specified address.
 */
public final class DiscardClient {
    public static void getClient(final String[] args) throws Exception {
        client(args, null);
    }

    public static void getClient(final String[] args, byte[] byteMsg) throws Exception {
        client(args, byteMsg);
    }

    private static void client(final String[] args, final byte[] byteMsg) throws Exception {
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class).handler(new ChannelInitializer<SocketChannel>() {
                @Override
                protected void initChannel(SocketChannel ch) throws Exception {
                    ChannelPipeline p = ch.pipeline();
                    p.addLast("framer", new DelimiterBasedFrameDecoder(8192, false, Delimiters.lineDelimiter()));
                    p.addLast(new ByteToMessageDec());
                    p.addLast(new MessageToByteEnc());

                    if (byteMsg != null && byteMsg.length > 0) {
                        p.addLast(new DiscardClientHandler(byteMsg));
                    } else {
                        p.addLast(new DiscardClientHandler(args[2]));
                    }
                }
            });
            final ChannelFuture f = b.connect(args[0], Integer.valueOf(args[1])).sync();
            // Wait until the connection is closed.
            f.channel().closeFuture().sync();
        } finally {
            group.shutdownGracefully();
        }
    }
}