Stream#close is not called in subclasses

[hannesg]

Hi

I wondered why Stream#close is actually never called in the specs ( see coveralls ) although several sockets are closed. Turned out that all subclasses forward their close method directly to the internal socket and therefore bypass flushing the write buffer. Moreover the Stream#close method doesn't work at all because no subclass defines a sysclose method.

Cheers' Hannes

[ioquatix]

This looks good.

[digitalextremist]

:+1:

[hannesg]

Thanks :+1: