What's the best way to reconnect after connection closed in Netty

Question

Simple scenario:

1. A lower level class A that extends SimpleChannelUpstreamHandler. This class is the workhorse to send the message and received the response.

Answer 1

I don't know if this is the right solution but to fix the thread leak of trustin's solution I found I could shutdown the event loop after the scheduler had triggered:

final EventLoop eventloop = f.channel().eventLoop();
b.connect().addListener((ChannelFuture f) -> {
    if (!f.isSuccess()) {
        long nextRetryDelay = nextRetryDelay(...);
        eventloop.schedule(() -> {
            doConnect();
            eventloop.shutdownGracefully();
        }, nextRetryDelay, ...);
    }
});