connections.py 文件源码

def _get_server_information(self):
        i = 0
        packet = MysqlPacket(self)
        data = packet.get_all_data()

        if DEBUG: dump_packet(data)
        #packet_len = byte2int(data[i:i+1])
        #i += 4
        self.protocol_version = byte2int(data[i:i+1])

        i += 1
        server_end = data.find(int2byte(0), i)
        # TODO: is this the correct charset? should it be default_charset?
        self.server_version = data[i:server_end].decode(self.charset)

        i = server_end + 1
        self.server_thread_id = struct.unpack('<h', data[i:i+2])

        i += 4
        self.salt = data[i:i+8]

        i += 9
        if len(data) >= i + 1:
            i += 1

        self.server_capabilities = struct.unpack('<h', data[i:i+2])[0]

        i += 1
        self.server_language = byte2int(data[i:i+1])
        self.server_charset = charset_by_id(self.server_language).name

        i += 16
        if len(data) >= i+12-1:
            rest_salt = data[i:i+12]
            self.salt += rest_salt