[Standards] XEP-0280 (Carbons) proposals

Dave Cridland dave at cridland.net
Fri Jun 2 07:59:18 UTC 2017

On 1 June 2017 at 12:51, Georg Lukas <georg at op-co.de> wrote:
>> Requiring servers to implement particular delivery rules:
>> https://github.com/xsf/xeps/commit/9c388a51c61541507c599832038b6562f3d01841
>> I don’t think this is right, I think we want to allow servers to make
>> their own judgements on what needs carbonsing. This was the consensus
>> compromise we made previously (after considerable effort) to remove
>> the objections to 280 going to Draft.
> I have to disagree. The current wording is inadequate for a network
> protocol specification: it does not provide any consistency between
> implementations, leading to subtle differences in observed behavior and
> to user confusion.
> Carbons is now over seven years old, so all server implementations
> should have figured out their rules by now, or at least a set of rules
> which we can make mandatory. I can see how creating such a mandatory
> rule set might have been an issue back at the inception of the XEP, but
> right now, we should have the accumulated knowledge to nail it, finally.

It would be very useful if server developers implementing Carbons
could take a look at these proposed rules and see how well (or badly)
they match reality.

That would be extremely beneficial, I think, in obtaining a clear idea
of whether these rules are right or not.


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