Package io.netty.handler.codec.mqtt

Class MqttDecoder

  • All Implemented Interfaces:
    io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler
    public final class MqttDecoder
extends io.netty.handler.codec.ReplayingDecoder<io.netty.handler.codec.mqtt.MqttDecoder.DecoderState>
    Decodes Mqtt messages from bytes, following the MQTT protocol specification v3.1 or v5.0, depending on the version specified in the CONNECT message that first goes through the channel.

    • Nested Class Summary

      • Nested classes/interfaces inherited from class io.netty.handler.codec.ByteToMessageDecoder

        io.netty.handler.codec.ByteToMessageDecoder.Cumulator

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

        io.netty.channel.ChannelHandler.Sharable

    • Field Summary

      • Fields inherited from class io.netty.handler.codec.ByteToMessageDecoder

        COMPOSITE_CUMULATOR, MERGE_CUMULATOR

    • Constructor Summary

      Constructors 
      Constructor Description
      MqttDecoder()  
      MqttDecoder​(int maxBytesInMessage)  
      MqttDecoder​(int maxBytesInMessage, int maxClientIdLength)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      protected void decode​(io.netty.channel.ChannelHandlerContext ctx, io.netty.buffer.ByteBuf buffer, List<Object> out)  

      • Methods inherited from class io.netty.handler.codec.ReplayingDecoder

        callDecode, checkpoint, checkpoint, state, state

      • Methods inherited from class io.netty.handler.codec.ByteToMessageDecoder

        actualReadableBytes, channelInactive, channelRead, channelReadComplete, decodeLast, discardSomeReadBytes, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setCumulator, setDiscardAfterReads, setSingleDecode, userEventTriggered

      • Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

        channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught

      • Methods inherited from class io.netty.channel.ChannelHandlerAdapter

        ensureNotSharable, handlerAdded, isSharable

      • Methods inherited from interface io.netty.channel.ChannelHandler

        handlerAdded

    • Constructor Detail

      • MqttDecoder

        public MqttDecoder()

      • MqttDecoder

        public MqttDecoder​(int maxBytesInMessage)

      • MqttDecoder

        public MqttDecoder​(int maxBytesInMessage,
                   int maxClientIdLength)

    • Method Detail

      • decode

        protected void decode​(io.netty.channel.ChannelHandlerContext ctx,
                      io.netty.buffer.ByteBuf buffer,
                      List<Object> out)
               throws Exception
        Specified by:
        decode in class io.netty.handler.codec.ByteToMessageDecoder
        Throws:
        Exception