minitds.py 文件源码

def _do_ssl_handshake(self):
        incoming = ssl.MemoryBIO()
        outgoing = ssl.MemoryBIO()
        sslobj = ssl.SSLContext().wrap_bio(incoming, outgoing, False)

        # do_handshake()
        while True:
            try:
                sslobj.do_handshake()
            except ssl.SSLWantReadError:
                self._send_message(TDS_PRELOGIN, outgoing.read())
                tag, _, _, buf = self._read_response_packet()
                assert tag == TDS_PRELOGIN
                incoming.write(buf)
            else:
                break

        return sslobj, incoming, outgoing