/*
 * Copyright 2022 learn-netty4 Project
 *
 * The learn-netty4 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:
 *
 *   https://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.flydean13.customprotocol;

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;
import lombok.extern.slf4j.Slf4j;

/**
 * 自定义协议客户端
 */
@Slf4j
public final class CustomProtocolClient {

    static final String HOST = System.getProperty("host", "127.0.0.1");
    static final int PORT = Integer.parseInt(System.getProperty("port", "8000"));
    static final int COUNT = Integer.parseInt(System.getProperty("count", "100"));

    public static void main(String[] args) throws Exception {
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group)
             .channel(NioSocketChannel.class)
             .handler(new CustomProtocolClientInitializer());

            // 建立连接
            ChannelFuture f = b.connect(HOST, PORT).sync();

            // 获取自定义handler
            CustomProtocolClientHandler handler =
                (CustomProtocolClientHandler) f.channel().pipeline().last();

            // 打印结果
            log.info("2的{}次方是:{}",COUNT, handler.getResult());
        } finally {
            group.shutdownGracefully();
        }
    }
}