mailer.py 文件源码

def starttls(self, keyfile=None, certfile=None):
        self.ehlo_or_helo_if_needed()
        if not self.has_extn("starttls"):
            raise smtplib.SMTPException("server doesn't support STARTTLS")

        response, reply = self.docmd("STARTTLS")
        if response == 220:
            with ca_certs(self._ca_certs) as certs:
                self.sock = ssl.wrap_socket(
                    self.sock,
                    certfile=certfile,
                    keyfile=keyfile,
                    ca_certs=certs,
                    cert_reqs=ssl.CERT_REQUIRED
                )
            cert = self.sock.getpeercert()
            match_hostname(cert, self._host)

            self.file = smtplib.SSLFakeFile(self.sock)
            self.helo_resp = None
            self.ehlo_resp = None
            self.esmtp_features = {}
            self.does_esmtp = 0
        return response, reply