Implement close by ending the TCP socket

[csimi]

This is not defined in the RFC so it's most likely dead simple and the Adobe engineers decided it's not worth documenting.

[arturomtm]

This approach goes against Stream Pipeline pattern.

The socket is the lowest layer of the pipeline and NetConnection must be independent of it (I wanted to separate concerns here), so constructor must not receive any parameter referencing lower layers because it is like 'short-circuiting' the pipeline. In fact, none of the entities, except Stream factory, is aware of the socket.

I am not worried about closing a connection, but in case of need, the approach should make use of .end() or .destroy() methods on Duplex Streams, listen to the triggered events and do whatever is needed on the rest of the piped entities.