Add additional error handling for failed connections. #379
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Fixes #378
The previous PR #374 removed a blanket
try...except OSError
that was preventing sockets from being deallocated becauseself.sock.close()
was never being reached.As a side effect, it was discovered in that OSError might also be raised for TLS connections inside of
self._shutdown_transport()
. Rather than revert the previous change, this PR adds extra error handling so that SSL sockets that fail to unwrap because of a connection failure will still be appropriately closed.