The raw-socket module does something like this:

https://npmjs.org/package/raw-socket

It sub-classes from EventEmitter and emits events such as "close" and 
"error" from the c++ code, e.g. the close event:

https://bitbucket.org/stephenwvickers/node-raw-socket/src/7f31f7272827b7580baf989803b9662bb5de43ba/src/raw.cc?at=default#cl-421

The c++ module itself needs to inherit from EventEmitter, I found this 
easiest to do from within JavaScript:

https://bitbucket.org/stephenwvickers/node-raw-socket/src/7f31f7272827b7580baf989803b9662bb5de43ba/index.js?at=default#cl-62

But to make it work fully you need to do this (at least I had to do this at 
the time):

https://bitbucket.org/stephenwvickers/node-raw-socket/src/7f31f7272827b7580baf989803b9662bb5de43ba/index.js?at=default#cl-31

Good luck!

Steve

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