HeartBeatSimpleHandle.java
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package com.crossoverjie.netty.action.handle;
import com.crossoverjie.netty.action.common.pojo.CustomProtocol;
import com.crossoverjie.netty.action.common.util.RandomUtil;
import com.crossoverjie.netty.action.util.NettySocketHolder;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.timeout.IdleState;
import io.netty.handler.timeout.IdleStateEvent;
import io.netty.util.CharsetUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Function:
*
* @author crossoverJie
* Date: 17/05/2018 18:52
* @since JDK 1.8
*/
public class HeartBeatSimpleHandle extends SimpleChannelInboundHandler<CustomProtocol> {
private final static Logger LOGGER = LoggerFactory.getLogger(HeartBeatSimpleHandle.class);
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof IdleStateEvent){
IdleStateEvent idleStateEvent = (IdleStateEvent) evt ;
if (idleStateEvent.state() == IdleState.READER_IDLE){
LOGGER.info("已经5秒没有收到信息！");
//向客户端发送消息
CustomProtocol customProtocol = new CustomProtocol(RandomUtil.getRandom(),"pong") ;
ctx.writeAndFlush(Unpooled.copiedBuffer(customProtocol.toString(), CharsetUtil.UTF_8))
.addListener(ChannelFutureListener.CLOSE_ON_FAILURE) ;
}
}
super.userEventTriggered(ctx, evt);
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, CustomProtocol customProtocol) throws Exception {
LOGGER.info("customProtocol={}", customProtocol);
NettySocketHolder.put(customProtocol.getId(),(NioSocketChannel)ctx.channel()) ;
}
}