@Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        super.channelActive(ctx);
        logger.debug("channelActive: " + ctx.name());
    }
Implementation of a multiplexing channel, from an embedded channel to two
possible TCP connections, primary and secondary.
The objective is to allow connections to individual systems
with a two CP (PN CPUs, CP343-1, CP443-1 or similar), or H-type systems
(S7-400H or S7-1500H).
The user App must be in charge of restoring the requests or
subscriptions that it is requesting.
plc4j/drivers/s7/src/main/java/org/apache/plc4x/java/s7/readwrite/protocol/S7HMuxImpl.java