conn

type AuthConn interface {
	// WriteAuthMoreData should write a (u8)1 before data.
	// also see `client_mpvio_read_packet` in the MySQL client. It'll ignore the first byte if it's 1.
	WriteAuthMoreData(data []byte) error
	// ReadPacket reads one more packet.
	// also see `client_mpvio_write_packet` in the MySQL client. It's just a normal packet without any prefixing.
	// NOTE: the first packet returned by the client is appended in the `Protocol::AuthSwitchResponse`, also see `client_mpvio_write_packet`.
	ReadPacket() ([]byte, error)
	// Flush flushes all packets in the connection and sends them to the client
	Flush(ctx context.Context) error
}