Package com.bytedesk.core.socket.mqtt.handler

Class MqttIdleStateHandler

java.lang.Object
io.netty.channel.ChannelHandlerAdapter
io.netty.channel.ChannelInboundHandlerAdapter
io.netty.channel.ChannelDuplexHandler
io.netty.handler.timeout.IdleStateHandler
com.bytedesk.core.socket.mqtt.handler.MqttIdleStateHandler
All Implemented Interfaces:
io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler, io.netty.channel.ChannelOutboundHandler
public class MqttIdleStateHandler extends io.netty.handler.timeout.IdleStateHandler
检测空闲连接和超时是为了及时释放资源: 在规定时间内没有收到来自客户端的任何packet，包括ping 常用的方法： 1. 发送消息用于测试一个不活跃的连接（俗称'心跳'）到远程断点用来确定其是否还活着。 2. 另一种比较粗暴的方法是直接断开那些指定时间间隔内不活跃的连接

  • Nested Class Summary

    Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

    io.netty.channel.ChannelHandler.Sharable

  • Constructor Summary

    Constructors
    Constructor
    Description
    MqttIdleStateHandler(int readerIdleTimeSeconds, int writerIdleTimeSeconds, int allIdleTimeSeconds)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    protected void
    channelIdle(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.timeout.IdleStateEvent evt)
     

    Methods inherited from class io.netty.handler.timeout.IdleStateHandler

    channelActive, channelInactive, channelRead, channelReadComplete, channelRegistered, getAllIdleTimeInMillis, getReaderIdleTimeInMillis, getWriterIdleTimeInMillis, handlerAdded, handlerRemoved, newIdleStateEvent, resetReadTimeout, resetWriteTimeout, write

    Methods inherited from class io.netty.channel.ChannelDuplexHandler

    bind, close, connect, deregister, disconnect, flush, read

    Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

    channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

    Methods inherited from class io.netty.channel.ChannelHandlerAdapter

    ensureNotSharable, isSharable

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • MqttIdleStateHandler

      public MqttIdleStateHandler(int readerIdleTimeSeconds, int writerIdleTimeSeconds, int allIdleTimeSeconds)

  • Method Details

    • channelIdle

      protected void channelIdle(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.timeout.IdleStateEvent evt) throws Exception
      Overrides:
      channelIdle in class io.netty.handler.timeout.IdleStateHandler
      Throws:
      Exception