class Net::SMTP

def tlsconnect(s)
  verified = false
  s = OpenSSL::SSL::SSLSocket.new s, @ssl_context
  logging "TLS connection started"
  s.sync_close = true
  s.connect
  if @ssl_context.verify_mode != OpenSSL::SSL::VERIFY_NONE
    s.post_connection_check(@address)
  end
  verified = true
  s
ensure
  s.close unless verified
end