Home / cs-notes / Architecture / Components / Netty / Handler / ChannelInitializer / channelRegistered

    @Override
    @SuppressWarnings("unchecked")
    public final void channelRegistered(ChannelHandlerContext ctx) throws Exception {
        // Normally this method will never be called as handlerAdded(...) should call initChannel(...) and remove
        // the handler.
        if (initChannel(ctx)) {
            // we called initChannel(...) so we need to call now pipeline.fireChannelRegistered() to ensure we not
            // miss an event.
            ctx.pipeline().fireChannelRegistered();

            // We are done with init the Channel, removing all the state for the Channel now.
            removeState(ctx);
        } else {
            // Called initChannel(...) before which is the expected behavior, so just forward the event.
            ctx.fireChannelRegistered();
        }
    }