Re: SIMPLE chat: Internationalization and normalization of nicknames

On 3/1/12 3:54 PM, Ben Campbell wrote:
> 
> On Mar 1, 2012, at 4:48 PM, Peter Saint-Andre wrote:
> 
>> On 3/1/12 3:45 PM, Ben Campbell wrote:
>>>
>>> On Mar 1, 2012, at 4:26 PM, Peter Saint-Andre wrote:
>>>
>>>> On 3/1/12 3:12 PM, Ben Campbell wrote:
>>>>>
>>>>>
>>>
>>> [...]
>>>
>>>>> (as individual)
>>>>>
>>>>> I concur with this approach in general, although I think we will
>>>>> find some differences between the Resource parts in 6122/6122bis
>>>>> and the use of nicknames in simple-chat. In particular:
>>>>>
>>>>> 1) A resource part identifies something. That makes uniqueness
>>>>> and comparisons fairly important. OTOH, a nickname is really for
>>>>> human display purposes. We still need to be able to compare them
>>>>> for reservations to work. And the human readability part means we
>>>>> should at least mention character confusion issues.
>>>>
>>>> In the chatroom context, XMPP resourceparts are mostly used for
>>>> display purposes but also for some authorization decisions (e.g.,
>>>> we can kick people based on their nickname). As far as I understand
>>>> it, the uses are really quite similar in XMPP chatrooms and SIMPLE
>>>> chatrooms.
>>>>
>>>
>>> My understanding of simple-chat is that the participant that you make
>>> policy decisions about would be identified by a bona-fide URI. For
>>> example, if we kick someone, we would supply the URI.  The nickname
>>> is a data attribute associated with the URI, and really is a display
>>> name for most practical purposes. Of course, you might select the
>>> nickname in a GUI in order to get you client to do the right thing.
>>
>> OK. It seems that you might also be making some authorization decisions
>> based on the nickname, e.g., if you've reserved a nickname then I can't
>> get that nickname (can I join the chatroom but just not with that
>> nickname?).
>>
> 
> Yes, that is true. We do need an equality operator in some sense. (And yes, assuming no other policy issue was blocking you, you could still use a different nickname)

If it were just a pretty display thing, life would be easier. So we'll
need to get into issues of comparison and equality. This could be fun.

Peter

-- 
Peter Saint-Andre
https://stpeter.im/