code: @Override
  	protected void encode(ChannelHandlerContext paramChannelHandlerContext,
  			ByteBuf paramOUTBOUND_IN, List<Object> paramList) throws Exception {
  		paramList.add(new BinaryWebSocketFrame(paramOUTBOUND_IN));
  		paramOUTBOUND_IN.retain();
  	}
docs: 对于业务层直接发送的bytebuf实例将其转换为websocket消息