com.zhuang.netty.handler.heartbeat.HeartbeatServerHandler Maven / Gradle / Ivy

Go to download
package com.zhuang.netty.handler.heartbeat;

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

@Slf4j
public class HeartbeatServerHandler extends ChannelInboundHandlerAdapter {

    private static final ByteBuf HEARTBEAT_SEQUENCE = Unpooled.unreleasableBuffer(Unpooled.copiedBuffer("HEARTBEAT", CharsetUtil.UTF_8));


    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        if (msg instanceof ByteBuf && msg.equals(HEARTBEAT_SEQUENCE)) {
            // 收到客户端的心跳响应消息
            log.info("Server receive heartbeat");
            ctx.writeAndFlush(HEARTBEAT_SEQUENCE);
        }
    }
}