* net: allow close() to ignore SSL failures due to disconnections
Comes with this PR is also a SIGPIPE handling contraption.
* net: don't do selectSigpipe() on macOS
macOS sockets have SO_NOSIGPIPE set, so an EPIPE doesn't necessary mean
that a SIGPIPE happened.
* net: fix alreadyBlocked logic
* net: WSAESHUTDOWN is also a disconnection error
* asyncnet, net: don't attempt SSL_shutdown if a fatal error occurred
Per TLS standard and SSL_shutdown(3ssl). This should prevent errors
coming from a close() after a bad event (ie. the other end of the pipe
is closed before shutdown can be negotiated).
Ref #9867
* tssl: try sending until an error occur
* tssl: cleanup
* tssl: actually run the test
I forgot to make the test run :P
* tssl: run the test on ARC, maybe then it'll be happy
* tssl: turns off ARC, switch tlsEmulation on for freebsd
* tssl: document why tlsEmulation is employed
* net: move SafeDisconn handling logic to socketError
