An open discussion list for topics related to the eduGAIN interfederation service.

[Davide Vaghetti <davide.vaghetti AT garr.it>]

Hi,

On 17/03/20 10:34, Guy Halse wrote:
> Hi
>
> On 2020/03/17 10:48, Stefan Winter wrote:
> > base64 expresses three binary bytes as four printable characters. 
> > There is thus an approximate relation that a base64 string is 4/3 
> > (four thirds) of the binary source. The additional few bytes at the 
> > beginning of the URI become less and less significant the bigger the 
> > file is. 
>
> Sure. My original point was merely that we decide which form makes most 
> sense and be unambiguous :)  I was merely explaining why we use the form 
> we do.
>
> I'm happy to do the maths for my users if the decision is to use the 
> encoded form, and publish a sensible user-understandable limit. Because 
> my experience with email attachments is that even relatively tech savy 
> users don't understand that a 5MB attachment limit means you can only 
> attach a 3.5MB file, and that generates support calls...

Been there and it is a pain.

Let me try to summarize the current discussion and see if there is 
enough consensus to establish a simple recommendation about inline logo 
sizes to be added to the eduGAIN BCP and on which we can issue specific 
warns in the validator.

Two basic needs emerged quite clearly:

* the need to calculate the size of the inline logos on the value of the 
<Logo> tag (Ian).
* the need to keep it simple at the edge (Guy, myself).

IMO Stefan's proposal seems good enough to take both into account.

Opinions?
Davide

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Davide Vaghetti
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