Gnought

Will do. Let see if I can break it in a smaller pr. and how the PROXY architecture should be

@ robertsLando What I understand is `pipe()` will do the overflow job in a smart way. https://github.com/nodejs/node/blob/1afec971304e5c6294bbf61bddb39b55e76b4672/lib/_stream_readable.js#L702-L720

The main question is what's the use case of modifying subscription topic in `authorizeSubscribe` ?

I believe you also hook `authorizePublish` to modify the PUBLISH topic, am I right?

How about if we add the support of client isolation? Will it fit in your case? @chfritz

Just like your use case, we prepend some client-specific string in client topics.

I'm against the PR. We should add a dup flag in aedes packet.

This issue will be fixed after applying PR #217

For `__smp_processor_id` compile error, PR #217 will do a fix

This issue will be fixed after applying PR #216 and #217