smtplib.py 文件源码

def _get_socket(self, host, port, timeout):
            if self.debuglevel > 0:
                print('connect:', (host, port), file=stderr)
            new_socket = socket.create_connection((host, port), timeout,
                    self.source_address)
            server_hostname = self._host if ssl.HAS_SNI else None
            new_socket = self.context.wrap_socket(new_socket,
                                                  server_hostname=server_hostname)
            return new_socket