com.zhuang.netty.handler.client.NettyClientHandler Maven / Gradle / Ivy

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package com.zhuang.netty.handler.client;

import com.zhuang.netty.NettyClient;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;
import lombok.extern.slf4j.Slf4j;


@Slf4j
public class NettyClientHandler extends ChannelInboundHandlerAdapter {

    private NettyClient nettyClient;

    public NettyClientHandler(NettyClient nettyClient) {
        this.nettyClient = nettyClient;
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) {
        log.info("Client channel active");
        String message = "Hello, Server!";
        ByteBuf buf = ctx.alloc().buffer();
        buf.writeBytes(message.getBytes(CharsetUtil.UTF_8));
        ctx.writeAndFlush(buf);
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) {
        ByteBuf buf = (ByteBuf) msg;
        String message = buf.toString(CharsetUtil.UTF_8);
        log.info("Client receive -> " + message);
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) {
        log.info("Client channel inactive");
        nettyClient.connect();
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        log.error("exceptionCaught", cause);
        ctx.close();
    }
}