Camel, Netty, and IdleStateHandler

Hi,

I want to send echo messages when channels are idle. However, I don't know
how this feature fits nicely with Camel channel pool. How can I tell camel
not to use some channels while I'm sending an echo message? Is it possible?
I was thinking to implement a handler which locks the channel, but that
doesn't feel like a clean implementation. Any ideas?

Thanks.