Class FixedLengthFrameDecoder

    • Field Detail

      • frameLength

        private final int frameLength
      • allocateFullBuffer

        private final boolean allocateFullBuffer
    • Constructor Detail

      • FixedLengthFrameDecoder

        public FixedLengthFrameDecoder​(int frameLength,
                                       boolean allocateFullBuffer)
        Creates a new instance.
        Parameters:
        frameLength - the length of the frame
        allocateFullBuffer - true if the cumulative ChannelBuffer should use the frameLength as its initial size
    • Method Detail

      • decode

        protected java.lang.Object decode​(ChannelHandlerContext ctx,
                                          Channel channel,
                                          ChannelBuffer buffer)
                                   throws java.lang.Exception
        Description copied from class: FrameDecoder
        Decodes the received packets so far into a frame. If an sub-class wants to extract a frame out of the buffer it should use the FrameDecoder.extractFrame(ChannelBuffer, int, int) method, to make optimizations easier later.
        Specified by:
        decode in class FrameDecoder
        Parameters:
        ctx - the context of this handler
        channel - the current channel
        buffer - the cumulative buffer of received packets so far. Note that the buffer might be empty, which means you should not make an assumption that the buffer contains at least one byte in your decoder implementation.
        Returns:
        the decoded frame if a full frame was received and decoded. null if there's not enough data in the buffer to decode a frame.
        Throws:
        java.lang.Exception