Proposal about content-size and hash

[Petite Abeille]

> On Nov 1, 2020, at 15:47, Solderpunk <solderpunk at posteo.net> wrote:
> 
> I've explained in another email why I don't think it's okay to put this
> information into the MIME type.

Actually, one could use a Message/External-Body content type, sporting a SIZE parameter, e.g:

message/external-body; access-type=URL; URL="gemini://example.com/foo"; SIZE=1024

could != should :D