XSF Discussion - 2019-07-10

> Jingle-FT::File: OPTIONAL, but SHOULD be present when offering a file. Can we change SHOULD to MUST here?

it's for "size" attribute

s/attribute/element/

sending files being changed is not a good idea anyway

File systems exist where file size isn't known in advance

in use nowadays?

Certainly, e.g., /proc on Linux

well ok I guess there are people who ever send files from /proc. certainly not me though.

A generic file transfer building block is useful, e.g., I may choose to offer webdav like services. Note that size tends to be optional in almost all file transfer oriented protocols. Almost nothing mandates it.

in any case if I ever sinde files from proc I'd made a cache first

You are thinking of "rion's specific use-case", and not of "general protocol building block usable in a variety of situations"

I sympathize FWIW :)

ok ok =)

And you can always cache on the receiver side :)

Same is true for HTTP/webdav/etc, FTP, SFTP, email protocols, etc

rion, what would be the benefit of s/SHOULD/MUST/ here?

Knowing full size in advance it's somewhat easier to operate with ranged transfers

rion: what if I'm sending you a flac as an mp3 and just converting it on the fly or something

rion, sure it is, but what has this to do with s/SHOULD/MUST/?

i guess my point is that most implementation will send the size if they know it, while there may be cases where you do not know the size in advance

and if we s/SHOULD/MUST/ then those cases would no longer be compliant

which probably would not prevent those implementations to perform file transfers without size announcing the size

I agree with you guys :) I just thought I can really use it to stream endless media. I already see this SIMS with an online translation :)

over s5b =)

What would be a good way to represent a datetime delta in a dataform?

seconds as floating point?

For eg MAM retention periods and such

it’ll be a PITA

XEP-0122 has datetime but that's not quite right

https://www.w3.org/TR/xmlschema11-2/#duration Hmmm

not complex at all

My head hurts