Re: [Uri-review] [IANA #1273521] Registration request for "at" URI scheme

[Graham Klyne <[e-mail]>]

Hi,

As IANA reviewer, I propose to request addition of the following note to this 
registration.

I'm posting here for information and comment before I make a formal request to IANA.

#g


[[

## IANA reviewer note

This scheme has been provisionally registered under the “first come first 
served” policy set out in RFC 7595.  This means that the scheme has not been 
formally reviewed in the IETF, and is not recommended by the IETF for general 
use on the open Internet.

There has been some discussion of this scheme on the IETF URI-review list 
[R1,R2], and there is a considerable degree of concern that the scheme name 'at' 
could be a cause of confusion, or conflict with other common uses of the term 
'at'.  For these reasons, it has been suggested that the name 'atproto' or 'atp' 
might be more suitable.  This could turn out to be an impediment to a subsequent 
request for permanent registration of this scheme name.

This note is intended to draw attention to potential problems that might arise 
if this scheme were to be used widely on the open Internet, and does not of 
itself constitute a position by the IETF or IANA on the considerations raised.

[R1] https://mailarchive.ietf.org/arch/msg/uri-review/x3LbUP7_DOlEFCH84QvZdRU74Js/
(refers to all messages in thread)

[R2] https://mailarchive.ietf.org/arch/msg/uri-review/uGgzryN-wG9PzrQU06bd4_zlW3s/
(refers to all messages in thread)

]]



On 01/06/2023 23:59, [e-mail] wrote:
>
> Hi Dave,
>
> What do you think of an addition like:
>
> ---
>
> Disambiguation Note
>   This URI scheme has no association with the 'at' command line utility for 
> scheduling program execution.
>
> ---
>
> --bryan
>
> On Thu, 1 Jun 2023, Dave Thaler wrote:
>
>> In my opinion it would be helpful to include a Note since this registration
>> doesn't follow the "SHOULD" (which is ok since its not a MUST) in RFC 7595:
>> "   Schemes SHOULD NOT use names that are either very general purpose or
>>   associated in the community with some other application or protocol."
>>
>> since "at", is a well known (e.g., see 
>> https://linux.die.net/man/1/atapplication, 
>> https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/at, 
>> etc.) application for scheduling job execution.
>>
>> It would be helpful to acknowledge this to avoid confusion.
>>
>> Dave
>
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-- 
Graham Klyne
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