[issue27377] Add smarter socket.fromfd()

[Neil Schemenauer]

Neil Schemenauer added the comment:

Tested on FreeBSD 10.3.  getsockname() on a IPPROTO_SCTP protocol socket returns errno = FileNoFoundError.  We could just comment out that test I guess.

My theory is that on FreeBSD, getsockname() on an SCTP socket fails if it is not bound.  Indeed, adding a bind(('127.0.0.1', 11234)) call before the fdtype() call makes the test pass.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27377>
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