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Subject: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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Dear all:

I am trying to address the last known issue of the SIMPLE chat draft. 
This came through Enrico Marocco's Appsdir review, and the comment was:

The document doesn't describe allowed characters in Nicks and any
normalization that needs to be applied.

So, I got advice from Alexy Melnikov, indicating that we should take a 
look at the ResourcePrep in:
http://datatracker.ietf.org/doc/draft-ietf-xmpp-6122bis/

The idea is to inspire on the ResourcePrep and adapted to Nicknames in 
SIMPLE chat. However, there is a dependency on the completion of the 
Precis Framework:
https://datatracker.ietf.org/doc/draft-ietf-precis-framework/

This means that SIMPLE chat will need to add a normative dependency to 
the Precis Framework, and if SIMPLE chat is approved and arrives to the 
RFC Editor before the Precis Framework, it will stay there until the 
framework reaches the RFC editor.

I guess this is what we should do, but if someone has any other opinion, 
please let me know it.

The internationalization and normalization of nicknames will probably 
take a bit of my time until we do it. So, I propose to submit my current 
working copy, that contains all comments from Cullen, Christer, Saul, 
Suresh, etc. This will be version -14.

Comments, please?

/Miguel


-- 
Miguel A. Garcia
+34-91-339-3608
Ericsson Spain

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On 3/1/12 2:55 PM, Miguel A. Garcia wrote:

> Comments, please?

Hi Miguel,

As an author of 6122bis and the PRECIS framework, I stand ready to help
on this list if you guys have questions.

To be clear, I think you guys don't want to use 6122bis, but you
probably do want to define a separate profile of the PRECIS framework.
Your other options are to define a stringprep profile (which I do not
recommend for various reasons) or to "roll your own" (which has its own
hazards).

Peter

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



From ben@nostrum.com  Thu Mar  1 14:12:27 2012
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On Mar 1, 2012, at 3:55 PM, Miguel A. Garcia wrote:

> Dear all:
>=20
> I am trying to address the last known issue of the SIMPLE chat draft. =
This came through Enrico Marocco's Appsdir review, and the comment was:
>=20
> The document doesn't describe allowed characters in Nicks and any
> normalization that needs to be applied.
>=20
> So, I got advice from Alexy Melnikov, indicating that we should take a =
look at the ResourcePrep in:
> http://datatracker.ietf.org/doc/draft-ietf-xmpp-6122bis/
>=20
> The idea is to inspire on the ResourcePrep and adapted to Nicknames in =
SIMPLE chat. However, there is a dependency on the completion of the =
Precis Framework:
> https://datatracker.ietf.org/doc/draft-ietf-precis-framework/
>=20
> This means that SIMPLE chat will need to add a normative dependency to =
the Precis Framework, and if SIMPLE chat is approved and arrives to the =
RFC Editor before the Precis Framework, it will stay there until the =
framework reaches the RFC editor.

(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.

2) The 6122bis resource parts live inside URIs, while  simple-chat =
nicknames are just strings.

I'm not sure that these differences really change the outcome =
much--they're just things to think about.


>=20
> I guess this is what we should do, but if someone has any other =
opinion, please let me know it.
>=20
> The internationalization and normalization of nicknames will probably =
take a bit of my time until we do it. So, I propose to submit my current =
working copy, that contains all comments from Cullen, Christer, Saul, =
Suresh, etc. This will be version -14.

(as draft shepherd)=20

Please do so. Hopefully we can get feedback as to whether they are okay =
with the changes related to their comments in parallel to working out =
the nickname issue.

Thanks!

Ben.=

From miguel.a.garcia@ericsson.com  Thu Mar  1 14:13:07 2012
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Thank you Peter,

I am also leaning towards defining a profile of the PRECIS framework. I 
need to study it in detail, and I am sure questions will come, so I will 
get back to you.

Thanks,

     Miguel

On 01/03/2012 23:00, Peter Saint-Andre wrote:
> On 3/1/12 2:55 PM, Miguel A. Garcia wrote:
>
>> Comments, please?
>
> Hi Miguel,
>
> As an author of 6122bis and the PRECIS framework, I stand ready to help
> on this list if you guys have questions.
>
> To be clear, I think you guys don't want to use 6122bis, but you
> probably do want to define a separate profile of the PRECIS framework.
> Your other options are to define a stringprep profile (which I do not
> recommend for various reasons) or to "roll your own" (which has its own
> hazards).
>
> Peter
>

-- 
Miguel A. Garcia
+34-91-339-3608
Ericsson Spain

From stpeter@stpeter.im  Thu Mar  1 14:19:55 2012
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On 3/1/12 3:13 PM, Miguel A. Garcia wrote:
> Thank you Peter,
> 
> I am also leaning towards defining a profile of the PRECIS framework. I
> need to study it in detail, and I am sure questions will come, so I will
> get back to you.

OK, good.

I'd like to make it clear that in XMPP, we would probably define a more
strict subset for nicknames than for resourceparts in general. As a
reminder, in XMPP your nickname is the last part of the JabberID, which
we call a resourcepart:

someroom@service/nick

Some XMPP implementations try to avoid confusion in chatrooms by
prohibiting case variations such as stpeter vs. StPeter (etc.). However,
confusion is nearly impossible to prevent, as we discuss in the
precis-framework document. Internationalization is inherently difficult,
so you'll want to really talk about this in the WG so your assumptions
and goals are clear.

Peter

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



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On 3/1/12 3:12 PM, Ben Campbell wrote:
> 
> On Mar 1, 2012, at 3:55 PM, Miguel A. Garcia wrote:
> 
>> Dear all:
>> 
>> I am trying to address the last known issue of the SIMPLE chat
>> draft. This came through Enrico Marocco's Appsdir review, and the
>> comment was:
>> 
>> The document doesn't describe allowed characters in Nicks and any 
>> normalization that needs to be applied.
>> 
>> So, I got advice from Alexy Melnikov, indicating that we should
>> take a look at the ResourcePrep in: 
>> http://datatracker.ietf.org/doc/draft-ietf-xmpp-6122bis/
>> 
>> The idea is to inspire on the ResourcePrep and adapted to Nicknames
>> in SIMPLE chat. However, there is a dependency on the completion of
>> the Precis Framework: 
>> https://datatracker.ietf.org/doc/draft-ietf-precis-framework/
>> 
>> This means that SIMPLE chat will need to add a normative dependency
>> to the Precis Framework, and if SIMPLE chat is approved and arrives
>> to the RFC Editor before the Precis Framework, it will stay there
>> until the framework reaches the RFC editor.
> 
> (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.

> 2) The 6122bis resource parts live inside URIs, while  simple-chat
> nicknames are just strings.

Well, we don't really use URIs in XMPP. Probably you mean JIDs
(JabberIDs). In that case, yes, they are used sometimes for addressing
in XMPP chatrooms (e.g., to send a private message to another occupant).

> I'm not sure that these differences really change the outcome
> much--they're just things to think about.

Although I think that XMPP resourceparts *as they are used in chatrooms*
are quite similar to SIMPLE nicknames, resourceparts are used in other
contexts (e.g., as device/connection identifiers) so the resourceprep
replacement that's developed in the XMPP WG won't be quite what you need
anyway. However, there probably is value in thinking about nicks in
general, because it's possible that we could define the same PRECIS
profile for use in both XMPP chatrooms (XEP-0045) and SIMPLE chatrooms.
A common approach might be good.

Peter

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



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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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On Mar 1, 2012, at 4:26 PM, Peter Saint-Andre wrote:

> On 3/1/12 3:12 PM, Ben Campbell wrote:
>>=20
>>=20

[...]

>> (as individual)
>>=20
>> 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:
>>=20
>> 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.
>=20
> 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.
>=20

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.


>> 2) The 6122bis resource parts live inside URIs, while  simple-chat
>> nicknames are just strings.
>=20
> Well, we don't really use URIs in XMPP. Probably you mean JIDs
> (JabberIDs). In that case, yes, they are used sometimes for addressing
> in XMPP chatrooms (e.g., to send a private message to another =
occupant).

You are right of course :-) I mean JIDs.


>=20
>> I'm not sure that these differences really change the outcome
>> much--they're just things to think about.
>=20
> Although I think that XMPP resourceparts *as they are used in =
chatrooms*
> are quite similar to SIMPLE nicknames, resourceparts are used in other
> contexts (e.g., as device/connection identifiers) so the resourceprep
> replacement that's developed in the XMPP WG won't be quite what you =
need
> anyway. However, there probably is value in thinking about nicks in
> general, because it's possible that we could define the same PRECIS
> profile for use in both XMPP chatrooms (XEP-0045) and SIMPLE =
chatrooms.
> A common approach might be good.

Agreed. Also, since simple-chat uses the nickname from the XCON common =
data model, other clients of that data model may have similar issues.

>=20
> Peter
>=20
> --=20
> Peter Saint-Andre
> https://stpeter.im/
>=20
>=20


From stpeter@stpeter.im  Thu Mar  1 14:48:58 2012
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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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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?).

Peter

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



From saul@ag-projects.com  Thu Mar  1 14:54:54 2012
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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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Hi,

>>=20
>> 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.
>=20
> 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.
>=20
>> 2) The 6122bis resource parts live inside URIs, while  simple-chat
>> nicknames are just strings.
>=20
> Well, we don't really use URIs in XMPP. Probably you mean JIDs
> (JabberIDs). In that case, yes, they are used sometimes for addressing
> in XMPP chatrooms (e.g., to send a private message to another =
occupant).
>=20

My understanding is that a full JID is comparable with a SIP GRUU, at =
least from the routing perspective. I'm working on a SIP-XMPP gateway at =
the moment and this is the translation I'm currently applying :-)


Regards,

--
Sa=FAl Ibarra Corretg=E9
AG Projects




From ben@nostrum.com  Thu Mar  1 14:54:55 2012
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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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On Mar 1, 2012, at 4:48 PM, Peter Saint-Andre wrote:

> On 3/1/12 3:45 PM, Ben Campbell wrote:
>>=20
>> On Mar 1, 2012, at 4:26 PM, Peter Saint-Andre wrote:
>>=20
>>> On 3/1/12 3:12 PM, Ben Campbell wrote:
>>>>=20
>>>>=20
>>=20
>> [...]
>>=20
>>>> (as individual)
>>>>=20
>>>> 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:
>>>>=20
>>>> 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.
>>>=20
>>> 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.
>>>=20
>>=20
>> 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.
>=20
> 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?).
>=20

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)=

From stpeter@stpeter.im  Thu Mar  1 14:58:00 2012
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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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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/



From internet-drafts@ietf.org  Thu Mar  1 23:39:58 2012
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Subject: [Simple] I-D Action: draft-ietf-simple-chat-14.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies. This draft is a work item of the SIP for Instant Messaging and Presenc=
e Leveraging Extensions Working Group of the IETF.

	Title           : Multi-party Chat Using the Message Session Relay Protoco=
l (MSRP)
	Author(s)       : Aki Niemi
                          Miguel A. Garcia-Martin
                          Geir A. Sandbakken
	Filename        : draft-ietf-simple-chat-14.txt
	Pages           : 37
	Date            : 2012-03-01

   The Message Session Relay Protocol (MSRP) defines a mechanism for
   sending instant messages within a peer-to-peer session, negotiated
   using the Session Initiation Protocol (SIP) and the Session
   Description Protocol (SDP).  This document defines the necessary
   tools for establishing multi-party chat sessions, or chat rooms,
   using MSRP.


A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-simple-chat-14.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-simple-chat-14.txt


From miguel.a.garcia@ericsson.com  Thu Mar  1 23:50:46 2012
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I have just submitted a new version of the SIMPLE chat room draft. This 
one does not yet consider the internationalization and normalization of 
nicknames, which is scheduled for version -15.

This version -14 addresses comments by Cullen, Suresh, Christer, and 
Saul. Please guys, verify that your changes are implemented according to 
your needs, and if you are not totally satisfied, you can still complain 
and we will fix it in version -15.

Diff with the previous version:

http://tools.ietf.org/rfcdiff?url2=draft-ietf-simple-chat-14

/Miguel

On 02/03/2012 8:39, internet-drafts@ietf.org wrote:
>
> A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the SIP for Instant Messaging and Presence Leveraging Extensions Working Group of the IETF.
>
> 	Title           : Multi-party Chat Using the Message Session Relay Protocol (MSRP)
> 	Author(s)       : Aki Niemi
>                            Miguel A. Garcia-Martin
>                            Geir A. Sandbakken
> 	Filename        : draft-ietf-simple-chat-14.txt
> 	Pages           : 37
> 	Date            : 2012-03-01
>
>     The Message Session Relay Protocol (MSRP) defines a mechanism for
>     sending instant messages within a peer-to-peer session, negotiated
>     using the Session Initiation Protocol (SIP) and the Session
>     Description Protocol (SDP).  This document defines the necessary
>     tools for establishing multi-party chat sessions, or chat rooms,
>     using MSRP.
>
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-simple-chat-14.txt
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> This Internet-Draft can be retrieved at:
> ftp://ftp.ietf.org/internet-drafts/draft-ietf-simple-chat-14.txt
>
> _______________________________________________
> Simple mailing list
> Simple@ietf.org
> https://www.ietf.org/mailman/listinfo/simple
>

-- 
Miguel A. Garcia
+34-91-339-3608
Ericsson Spain

From saul@ag-projects.com  Fri Mar  2 00:21:56 2012
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Hi, Miguel,

I just read it and what I mentioned has been addressed as discussed :-)

A couple of minor things, though:

In section 4: "All messages in the chat room use the 'Message/CPIM' =
wrapper content
   type [RFC3862]..."

and a bit later, in section 5: "The conference focus of a chat room MUST =
include support for a=09
   Message/CPIM [RFC3862] top-level wrapper for the MSRP messages by	 =
	   Message/CPIM [RFC3862]"

I see that support for CPIM is a MUST for the Focus, but the behavior of =
the Focus if an endpoint doesn't support it could be unclear. Should =
CPIM be a MUST also for endpoints joining a chat room? IMHO it should.

In section 7.1: "The user can select a different nickname and retry
   another NICKNAME request. nickname is not allocated to this user"."

There seems to be an editing mistake after the dot.


Regards,

--
Sa=FAl Ibarra Corretg=E9
AG Projects




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Hi Saul,

Thanks for your comments. Inline replies.



On 02/03/2012 9:21, Saúl Ibarra Corretgé wrote:
> Hi, Miguel,
>
> I just read it and what I mentioned has been addressed as discussed :-)
>
> A couple of minor things, though:
>
> In section 4: "All messages in the chat room use the 'Message/CPIM' wrapper content
>     type [RFC3862]..."
>
> and a bit later, in section 5: "The conference focus of a chat room MUST include support for a	
>     Message/CPIM [RFC3862] top-level wrapper for the MSRP messages by	 	   Message/CPIM [RFC3862]"
>
> I see that support for CPIM is a MUST for the Focus, but the behavior of the Focus if an endpoint doesn't support it could be unclear. Should CPIM be a MUST also for endpoints joining a chat room? IMHO it should.



The spirit of the draft is to support "conference-aware" and 
"conference-unaware" participants. The latter include: those not 
understanding the SIP "isfocus" extension, and those not supporting this 
draft.

Conference-unaware participants can join the chat room and send and 
receive regular messages, but will not be able to send private messages, 
use anonymous URIs, or use nicknames. These conference-unaware 
participants will not read this draft, so we cannot put procedures to 
this type of user agents. We could say something about how the focus and 
MSRP switch treats conference-unaware participants, but I believe it is 
"business as usual", e.g., applying the conference framework.

So, the draft focuses on User Agents that implement this draft, and as 
such, mandates the usage of Message/CPIM. See third paragraph in Section 6.1:

    The SEND request MUST contain a top-level wrapper of type 'Message/
    CPIM' according to RFC 3862 [RFC3862].  The actual instant message
    payload MUST be included as payload of the 'Message/CPIM' wrapper and
    MAY be of any type negotiated in the SDP 'accept-types' attribute
    according to the MSRP rules.

and later in 6.2:

    When a chat room participant wishes to send a private instant message
    to a participant in the chat room, it follows the same procedures for
    creating a SEND request as for regular messages (Section 6.1).  The
    only difference is that the MSRP endpoint MUST populate a single To
    header of the Message/CPIM wrapper with the identifier of the
    intended recipient.

So, I believe there is a mandate for conference-aware participants to use 
Message/CPIM.



>
> In section 7.1: "The user can select a different nickname and retry
>     another NICKNAME request. nickname is not allocated to this user"."
>
> There seems to be an editing mistake after the dot.

Oh, yes, thanks for the catch. It will be fixed in version -15. The text 
after the dot should not be present there.

/Miguel


>
>
> Regards,
>
> --
> Saúl Ibarra Corretgé
> AG Projects
>
>
>

-- 
Miguel A. Garcia
+34-91-339-3608
Ericsson Spain

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Subject: Re: [Simple] I-D Action: draft-ietf-simple-chat-14.txt
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Hi Miguel,

>=20
> The spirit of the draft is to support "conference-aware" and =
"conference-unaware" participants. The latter include: those not =
understanding the SIP "isfocus" extension, and those not supporting this =
draft.
>=20
> Conference-unaware participants can join the chat room and send and =
receive regular messages, but will not be able to send private messages, =
use anonymous URIs, or use nicknames. These conference-unaware =
participants will not read this draft, so we cannot put procedures to =
this type of user agents. We could say something about how the focus and =
MSRP switch treats conference-unaware participants, but I believe it is =
"business as usual", e.g., applying the conference framework.
>=20

Yes, that makes sense.

> So, the draft focuses on User Agents that implement this draft, and as =
such, mandates the usage of Message/CPIM. See third paragraph in Section =
6.1:
>=20
>   The SEND request MUST contain a top-level wrapper of type 'Message/
>   CPIM' according to RFC 3862 [RFC3862].  The actual instant message
>   payload MUST be included as payload of the 'Message/CPIM' wrapper =
and
>   MAY be of any type negotiated in the SDP 'accept-types' attribute
>   according to the MSRP rules.
>=20
> and later in 6.2:
>=20
>   When a chat room participant wishes to send a private instant =
message
>   to a participant in the chat room, it follows the same procedures =
for
>   creating a SEND request as for regular messages (Section 6.1).  The
>   only difference is that the MSRP endpoint MUST populate a single To
>   header of the Message/CPIM wrapper with the identifier of the
>   intended recipient.
>=20
> So, I believe there is a mandate for conference-aware participants to =
use Message/CPIM.
>=20

Apologies, I somehow didn't notice those paragraphs on my quick read. =
It's just fine as it is.


Regards,

--
Sa=FAl Ibarra Corretg=E9
AG Projects




From pkyzivat@alum.mit.edu  Fri Mar  2 08:39:25 2012
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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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On 3/1/12 5:54 PM, Ben Campbell wrote:

>> 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)

And this presumably needs some notion of canonicalization, so that you 
can't get two nicknames that compare as different but *look* the same.

	Thanks,
	Paul

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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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On Mar 2, 2012, at 10:39 AM, Paul Kyzivat wrote:

> On 3/1/12 5:54 PM, Ben Campbell wrote:
>=20
>>> 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?).
>>>=20
>>=20
>> 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)
>=20
> And this presumably needs some notion of canonicalization, so that you =
can't get two nicknames that compare as different but *look* the same.

That's going to be a very hard problem to solve. I suspect we will end =
up with text that points out that this can happen, but leave it up to =
implementors to figure out what to do about it.

(Peter: Do you have your Cherokee example handy?)

>=20
> 	Thanks,
> 	Paul
> _______________________________________________
> Simple mailing list
> Simple@ietf.org
> https://www.ietf.org/mailman/listinfo/simple


From stpeter@stpeter.im  Fri Mar  2 13:23:52 2012
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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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On 3/2/12 12:08 PM, Ben Campbell wrote:
> 
> On Mar 2, 2012, at 10:39 AM, Paul Kyzivat wrote:
> 
>> On 3/1/12 5:54 PM, Ben Campbell wrote:
>> 
>>>> 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)
>> 
>> And this presumably needs some notion of canonicalization, so that
>> you can't get two nicknames that compare as different but *look*
>> the same.
> 
> That's going to be a very hard problem to solve. I suspect we will
> end up with text that points out that this can happen, but leave it
> up to implementors to figure out what to do about it.

The problem of so-called confusable characters is impossible to solve.
See for instance:

http://tools.ietf.org/html/draft-ietf-precis-framework-01#section-10.3

The Unicode Consortium has gone a bit farther:

http://unicode.org/reports/tr39/#Confusable_Detection

You can nibble around the edges here, but foolproof solutions cannot be
had (in large measure because humans are so easily fooled).

> (Peter: Do you have your Cherokee example handy?)

http://stpeter.im/journal/1420.html

That is: ášáŽ¢áŽµá‹áŽ¢á‹á’ != STPETER (and Cherokee Letter Quv = á‹ is not defined
by the Unicode standard as confusable with, mapped to, or otherwise
equivalent to Latin Uppercase E despite their surface similarity).

Peter

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



From pkyzivat@alum.mit.edu  Fri Mar  2 18:44:28 2012
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Subject: Re: [Simple] SIMPLE chat: Internationalization and normalization of nicknames
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OK, you guys have obviously gone down this path before.
I'm happy to have you suggest what is reasonable and what is not.

	Thanks,
	Paul

On 3/2/12 4:23 PM, Peter Saint-Andre wrote:
> On 3/2/12 12:08 PM, Ben Campbell wrote:
>>
>> On Mar 2, 2012, at 10:39 AM, Paul Kyzivat wrote:
>>
>>> On 3/1/12 5:54 PM, Ben Campbell wrote:
>>>
>>>>> 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)
>>>
>>> And this presumably needs some notion of canonicalization, so that
>>> you can't get two nicknames that compare as different but *look*
>>> the same.
>>
>> That's going to be a very hard problem to solve. I suspect we will
>> end up with text that points out that this can happen, but leave it
>> up to implementors to figure out what to do about it.
>
> The problem of so-called confusable characters is impossible to solve.
> See for instance:
>
> http://tools.ietf.org/html/draft-ietf-precis-framework-01#section-10.3
>
> The Unicode Consortium has gone a bit farther:
>
> http://unicode.org/reports/tr39/#Confusable_Detection
>
> You can nibble around the edges here, but foolproof solutions cannot be
> had (in large measure because humans are so easily fooled).
>
>> (Peter: Do you have your Cherokee example handy?)
>
> http://stpeter.im/journal/1420.html
>
> That is: ášáŽ¢áŽµá‹áŽ¢á‹á’ != STPETER (and Cherokee Letter Quv = á‹ is not defined
> by the Unicode standard as confusable with, mapped to, or otherwise
> equivalent to Latin Uppercase E despite their surface similarity).
>
> Peter
>


From stpeter@stpeter.im  Mon Mar  5 09:26:18 2012
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On 3/2/12 7:44 PM, Paul Kyzivat wrote:
> OK, you guys have obviously gone down this path before.
> I'm happy to have you suggest what is reasonable and what is not.

BTW I am pushing to submit version 00 of a precis-nickname I-D today,
which should provide a starting point for discussion.

Peter

-- 
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FYI, as promised.

-------- Original Message --------
Subject: I-D Action: draft-saintandre-precis-nickname-00.txt
Date: Mon, 05 Mar 2012 14:00:12 -0800
From: internet-drafts@ietf.org
Reply-To: internet-drafts@ietf.org
To: i-d-announce@ietf.org


A New Internet-Draft is available from the on-line Internet-Drafts
directories.

	Title           : Preparation and Comparison of Nicknames
	Author(s)       : Peter Saint-Andre
	Filename        : draft-saintandre-precis-nickname-00.txt
	Pages           : 6
	Date            : 2012-03-05

   This document describes how to prepare and compare Unicode strings
   representing nicknames, primarily as used within textual chatrooms.
   This profile is intended to be used by chatroom technologies based on
   both the Extensible Messaging and Presence Protocol (XMPP) and the
   Message Session Relay Protocol (MSRP).


A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-saintandre-precis-nickname-00.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-saintandre-precis-nickname-00.txt

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Excellent! Thanks, Peter!

Miguel, Geir Arne, and everyone else following this issue in SIMPLE: =
Does this draft meet our needs for simple-chat?

Thanks!

Ben.

On Mar 5, 2012, at 4:03 PM, Peter Saint-Andre wrote:

> FYI, as promised.
>=20
> -------- Original Message --------
> Subject: I-D Action: draft-saintandre-precis-nickname-00.txt
> Date: Mon, 05 Mar 2012 14:00:12 -0800
> From: internet-drafts@ietf.org
> Reply-To: internet-drafts@ietf.org
> To: i-d-announce@ietf.org
>=20
>=20
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>=20
> 	Title           : Preparation and Comparison of Nicknames
> 	Author(s)       : Peter Saint-Andre
> 	Filename        : draft-saintandre-precis-nickname-00.txt
> 	Pages           : 6
> 	Date            : 2012-03-05
>=20
>   This document describes how to prepare and compare Unicode strings
>   representing nicknames, primarily as used within textual chatrooms.
>   This profile is intended to be used by chatroom technologies based =
on
>   both the Extensible Messaging and Presence Protocol (XMPP) and the
>   Message Session Relay Protocol (MSRP).
>=20
>=20
> A URL for this Internet-Draft is:
> =
http://www.ietf.org/internet-drafts/draft-saintandre-precis-nickname-00.tx=
t
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> This Internet-Draft can be retrieved at:
> =
ftp://ftp.ietf.org/internet-drafts/draft-saintandre-precis-nickname-00.txt=

>=20
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
> https://www.ietf.org/mailman/listinfo/i-d-announce
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> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
> _______________________________________________
> Simple mailing list
> Simple@ietf.org
> https://www.ietf.org/mailman/listinfo/simple


From stpeter@stpeter.im  Mon Mar  5 14:18:20 2012
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On 3/5/12 3:16 PM, Ben Campbell wrote:
> Excellent! Thanks, Peter!
> 
> Miguel, Geir Arne, and everyone else following this issue in SIMPLE: Does this draft meet our needs for simple-chat?

This is a first pass. IMHO it could be augmented with more details about
the avoidance of confusable characters, but that's quite a bit more work
and we need to figure out if the benefits are worth the cost.

Peter

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



From ben@nostrum.com  Mon Mar  5 14:21:56 2012
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On Mar 5, 2012, at 4:18 PM, Peter Saint-Andre wrote:

> On 3/5/12 3:16 PM, Ben Campbell wrote:
>> Excellent! Thanks, Peter!
>>=20
>> Miguel, Geir Arne, and everyone else following this issue in SIMPLE: =
Does this draft meet our needs for simple-chat?
>=20
> This is a first pass.

Of course--I should adjust my question to say "is this on the right =
track to meet our needs for simple-chat?" :-)

> IMHO it could be augmented with more details about
> the avoidance of confusable characters, but that's quite a bit more =
work
> and we need to figure out if the benefits are worth the cost.

Agreed, and whether that decision is necessarily the same for MSRP as =
for XMPP.

>=20
> Peter
>=20
> --=20
> Peter Saint-Andre
> https://stpeter.im/
>=20
>=20


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On 3/5/12 3:21 PM, Ben Campbell wrote:
> 
> On Mar 5, 2012, at 4:18 PM, Peter Saint-Andre wrote:
> 
>> On 3/5/12 3:16 PM, Ben Campbell wrote:
>>> Excellent! Thanks, Peter!
>>>
>>> Miguel, Geir Arne, and everyone else following this issue in SIMPLE: Does this draft meet our needs for simple-chat?
>>
>> This is a first pass.
> 
> Of course--I should adjust my question to say "is this on the right track to meet our needs for simple-chat?" :-)

I think it's on the right track, but I'm biased. :)

>> IMHO it could be augmented with more details about
>> the avoidance of confusable characters, but that's quite a bit more work
>> and we need to figure out if the benefits are worth the cost.
> 
> Agreed, and whether that decision is necessarily the same for MSRP as for XMPP.

True. Even if some folks decide to go down the "avoid confusables" path,
I think it would be optional -- something that goes above and beyond
what is strictly necessary from a PRECIS point of view.

Peter

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



From miguel.a.garcia@ericsson.com  Wed Mar  7 03:00:41 2012
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Subject: Re: [Simple] I-D Action: draft-saintandre-precis-nickname-00.txt
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Hi guys,

I think this draft is a very good start.

So, I believe the SIMPLE chat draft should just add one sentence with a 
normative statement pointing this draft, and we are done.

Do we all agree that this is the path forward?

/Miguel

On 05/03/2012 23:25, Peter Saint-Andre wrote:
> On 3/5/12 3:21 PM, Ben Campbell wrote:
>>
>> On Mar 5, 2012, at 4:18 PM, Peter Saint-Andre wrote:
>>
>>> On 3/5/12 3:16 PM, Ben Campbell wrote:
>>>> Excellent! Thanks, Peter!
>>>>
>>>> Miguel, Geir Arne, and everyone else following this issue in SIMPLE: Does this draft meet our needs for simple-chat?
>>>
>>> This is a first pass.
>>
>> Of course--I should adjust my question to say "is this on the right track to meet our needs for simple-chat?" :-)
>
> I think it's on the right track, but I'm biased. :)
>
>>> IMHO it could be augmented with more details about
>>> the avoidance of confusable characters, but that's quite a bit more work
>>> and we need to figure out if the benefits are worth the cost.
>>
>> Agreed, and whether that decision is necessarily the same for MSRP as for XMPP.
>
> True. Even if some folks decide to go down the "avoid confusables" path,
> I think it would be optional -- something that goes above and beyond
> what is strictly necessary from a PRECIS point of view.
>
> Peter
>

-- 
Miguel A. Garcia
+34-91-339-3608
Ericsson Spain

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Date: Wed, 07 Mar 2012 13:51:00 +0100
From: Geir Arne Sandbakken <geirsand@cisco.com>
To: Ben Campbell <ben@nostrum.com>, Peter Saint-Andre <stpeter@stpeter.im>
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Subject: Re: [Simple] I-D Action: draft-saintandre-precis-nickname-00.txt
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> This message is in MIME format. Since your mail reader does not understand
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Ben, Peter,

Can=B9t say I=B9m not a  cautious about adding normative references this late i=
n
the process,  but the internationalization of nicknames is clearly under
specified.  Moving towards having a common set of rules for handling
nicknames should help implementers,  and Peter=B9s draft seems to provide
exactly what we want.

Thanks,
Geir A

On 3/5/12 11:16 PM, "Ben Campbell" <ben@nostrum.com> wrote:

> Excellent! Thanks, Peter!
>=20
> Miguel, Geir Arne, and everyone else following this issue in SIMPLE: Does=
 this
> draft meet our needs for simple-chat?
>=20
> Thanks!
>=20
> Ben.
>=20
> On Mar 5, 2012, at 4:03 PM, Peter Saint-Andre wrote:
>=20
>> > FYI, as promised.
>> >=20
>> > -------- Original Message --------
>> > Subject: I-D Action: draft-saintandre-precis-nickname-00.txt
>> > Date: Mon, 05 Mar 2012 14:00:12 -0800
>> > From: internet-drafts@ietf.org
>> > Reply-To: internet-drafts@ietf.org
>> > To: i-d-announce@ietf.org
>> >=20
>> >=20
>> > A New Internet-Draft is available from the on-line Internet-Drafts
>> > directories.
>> >=20
>> >  Title           : Preparation and Comparison of Nicknames
>> >  Author(s)       : Peter Saint-Andre
>> >  Filename        : draft-saintandre-precis-nickname-00.txt
>> >  Pages           : 6
>> >  Date            : 2012-03-05
>> >=20
>> >   This document describes how to prepare and compare Unicode strings
>> >   representing nicknames, primarily as used within textual chatrooms.
>> >   This profile is intended to be used by chatroom technologies based o=
n
>> >   both the Extensible Messaging and Presence Protocol (XMPP) and the
>> >   Message Session Relay Protocol (MSRP).
>> >=20
>> >=20
>> > A URL for this Internet-Draft is:
>> > http://www.ietf.org/internet-drafts/draft-saintandre-precis-nickname-0=
0.txt
>> >=20
>> > Internet-Drafts are also available by anonymous FTP at:
>> > ftp://ftp.ietf.org/internet-drafts/
>> >=20
>> > This Internet-Draft can be retrieved at:
>> > ftp://ftp.ietf.org/internet-drafts/draft-saintandre-precis-nickname-00=
.txt
>> >=20
>> > _______________________________________________
>> > I-D-Announce mailing list
>> > I-D-Announce@ietf.org
>> > https://www.ietf.org/mailman/listinfo/i-d-announce
>> > Internet-Draft directories: http://www.ietf.org/shadow.html
>> > or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>> > _______________________________________________
>> > Simple mailing list
>> > Simple@ietf.org
>> > https://www.ietf.org/mailman/listinfo/simple
>=20
> _______________________________________________
> Simple mailing list
> Simple@ietf.org
> https://www.ietf.org/mailman/listinfo/simple


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<HTML>
<HEAD>
<TITLE>Re: [Simple] I-D Action: draft-saintandre-precis-nickname-00.txt</TI=
TLE>
</HEAD>
<BODY>
<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:11pt=
'>Ben, Peter,<BR>
<BR>
Can&#8217;t say I&#8217;m not a &nbsp;cautious about adding normative refer=
ences this late in the process, &nbsp;but the internationalization of nickna=
mes is clearly under specified. &nbsp;Moving towards having a common set of =
rules for handling nicknames should help implementers, &nbsp;and Peter&#8217=
;s draft seems to provide exactly what we want. &nbsp;<BR>
<BR>
Thanks,<BR>
Geir A<BR>
<BR>
On 3/5/12 11:16 PM, &quot;Ben Campbell&quot; &lt;<a href=3D"ben@nostrum.com">=
ben@nostrum.com</a>&gt; wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT SIZE=3D"2"><FONT FACE=3D"Consolas, Courier New,=
 Courier"><SPAN STYLE=3D'font-size:10pt'>Excellent! Thanks, Peter!<BR>
<BR>
Miguel, Geir Arne, and everyone else following this issue in SIMPLE: Does t=
his draft meet our needs for simple-chat?<BR>
<BR>
Thanks!<BR>
<BR>
Ben.<BR>
<BR>
On Mar 5, 2012, at 4:03 PM, Peter Saint-Andre wrote:<BR>
<BR>
&gt; FYI, as promised.<BR>
&gt; <BR>
&gt; -------- Original Message --------<BR>
&gt; Subject: I-D Action: draft-saintandre-precis-nickname-00.txt<BR>
&gt; Date: Mon, 05 Mar 2012 14:00:12 -0800<BR>
&gt; From: <a href=3D"internet-drafts@ietf.org">internet-drafts@ietf.org</a><=
BR>
&gt; Reply-To: <a href=3D"internet-drafts@ietf.org">internet-drafts@ietf.org<=
/a><BR>
&gt; To: <a href=3D"i-d-announce@ietf.org">i-d-announce@ietf.org</a><BR>
&gt; <BR>
&gt; <BR>
&gt; A New Internet-Draft is available from the on-line Internet-Drafts<BR>
&gt; directories.<BR>
&gt; <BR>
&gt; &nbsp;Title &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;: Preparation and Comparison of Nicknames<BR>
&gt; &nbsp;Author(s) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: Peter Saint-Andr=
e<BR>
&gt; &nbsp;Filename &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: draft-saint=
andre-precis-nickname-00.txt<BR>
&gt; &nbsp;Pages &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;: 6<BR>
&gt; &nbsp;Date &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;: 2012-03-05<BR>
&gt; <BR>
&gt; &nbsp;&nbsp;This document describes how to prepare and compare Unicode=
 strings<BR>
&gt; &nbsp;&nbsp;representing nicknames, primarily as used within textual c=
hatrooms.<BR>
&gt; &nbsp;&nbsp;This profile is intended to be used by chatroom technologi=
es based on<BR>
&gt; &nbsp;&nbsp;both the Extensible Messaging and Presence Protocol (XMPP)=
 and the<BR>
&gt; &nbsp;&nbsp;Message Session Relay Protocol (MSRP).<BR>
&gt; <BR>
&gt; <BR>
&gt; A URL for this Internet-Draft is:<BR>
&gt; <a href=3D"http://www.ietf.org/internet-drafts/draft-saintandre-precis-n=
ickname-00.txt">http://www.ietf.org/internet-drafts/draft-saintandre-precis-=
nickname-00.txt</a><BR>
&gt; <BR>
&gt; Internet-Drafts are also available by anonymous FTP at:<BR>
&gt; <a href=3D"ftp://ftp.ietf.org/internet-drafts/">ftp://ftp.ietf.org/inter=
net-drafts/</a><BR>
&gt; <BR>
&gt; This Internet-Draft can be retrieved at:<BR>
&gt; <a href=3D"ftp://ftp.ietf.org/internet-drafts/draft-saintandre-precis-ni=
ckname-00.txt">ftp://ftp.ietf.org/internet-drafts/draft-saintandre-precis-ni=
ckname-00.txt</a><BR>
&gt; <BR>
&gt; _______________________________________________<BR>
&gt; I-D-Announce mailing list<BR>
&gt; <a href=3D"I-D-Announce@ietf.org">I-D-Announce@ietf.org</a><BR>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/i-d-announce">https://w=
ww.ietf.org/mailman/listinfo/i-d-announce</a><BR>
&gt; Internet-Draft directories: <a href=3D"http://www.ietf.org/shadow.html">=
http://www.ietf.org/shadow.html</a><BR>
&gt; or <a href=3D"ftp://ftp.ietf.org/ietf/1shadow-sites.txt">ftp://ftp.ietf.=
org/ietf/1shadow-sites.txt</a><BR>
&gt; _______________________________________________<BR>
&gt; Simple mailing list<BR>
&gt; <a href=3D"Simple@ietf.org">Simple@ietf.org</a><BR>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/simple">https://www.iet=
f.org/mailman/listinfo/simple</a><BR>
<BR>
_______________________________________________<BR>
Simple mailing list<BR>
<a href=3D"Simple@ietf.org">Simple@ietf.org</a><BR>
<a href=3D"https://www.ietf.org/mailman/listinfo/simple">https://www.ietf.org=
/mailman/listinfo/simple</a><BR>
</SPAN></FONT></FONT></BLOCKQUOTE>
</BODY>
</HTML>


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Subject: [Simple] draft-ietf-simple-chat - DateTime header
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Hi,****

 ****

I was wondering whether the DateTime header that is used in the MSRP Send
message could also be used in the MSRP 200 OK response?****

In a multi-party conference (and possibly in point to point) the ordering
of messages sent and received should be done by a common clock, that of the
MSRP switch, as there is no guarantee that the timestamps generated by the
various participants is synchronized.****

I apologize in advance if this is not the correct forum to ask questions or
make suggestions.****

 ****

Regards,****

** **

*Simon Shaw*
*Team Leader, Unified Communications Signaling*

*AT&T Unified Communications
*Phone: +972.3.976.7714****

Cell: +972.54.560.6912****

Fax: +972.3.976.7712****

Simon.shaw@att.com****

*Get **AT&T Connect for Mobile** **now!*

*iPhone<http://itunes.apple.com/us/app/at-t-connect-mobile/id318798264?mt=8>|
BB <http://downloads.uc.att.com/BB/Public/Latest/En/KB/att_connect.jad> |
iPad<http://itunes.apple.com/il/app/at-t-connect-mobile-application/id459888209?mt=8>
                             *****

[image: Description: Description: cid:image001.png@01C8E00D.2EC2BC90]****

** **

** **

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<div dir=3D"ltr"><div class=3D"gmail_quote"><div lang=3D"EN-US" link=3D"blu=
e" vlink=3D"purple"><div><p class=3D"MsoNormal">Hi,<u></u><u></u></p>
<p class=3D"MsoNormal">=A0<u></u><u></u></p>
<p class=3D"MsoNormal">I was wondering whether the DateTime header that is =
used in the MSRP Send message could also be used in the MSRP 200 OK respons=
e?<u></u><u></u></p>
<p class=3D"MsoNormal">In a multi-party conference (and possibly in point t=
o point) the ordering of messages sent and received should be done by a com=
mon clock, that of the MSRP switch, as there is no guarantee that the times=
tamps generated by the various participants
 is synchronized.<u></u><u></u></p>
<p class=3D"MsoNormal">I apologize in advance if this is not the correct fo=
rum to ask questions or make suggestions.<u></u><u></u></p>
<p class=3D"MsoNormal">=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><b><span style=3D"color:#1f497d">Simon Shaw</span></=
b><span style=3D"color:#1f497d"><br>
<b>Team Leader, Unified Communications Signaling<u></u><u></u></b></span></=
p>
<p class=3D"MsoNormal"><b><span style=3D"color:#1f497d">AT&amp;T Unified Co=
mmunications<br>
</span></b><span style=3D"color:#1f497d">Phone: <a href=3D"tel:%2B972.3.976=
.7714" value=3D"+97239767714" target=3D"_blank">+972.3.976.7714</a><u></u><=
u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">Cell: <a href=3D"tel:%=
2B972.54.560.6912" value=3D"+972545606912" target=3D"_blank">+972.54.560.69=
12</a><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">Fax: <a href=3D"tel:%2=
B972.3.976.7712" value=3D"+97239767712" target=3D"_blank">+972.3.976.7712</=
a><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><a href=3D"mailto:Simo=
n.shaw@att.com" target=3D"_blank">Simon.shaw@att.com</a><u></u><u></u></spa=
n></p>
<p class=3D"MsoNormal"><b><i><span style=3D"font-size:10.0pt;color:#5f497a"=
>Get </span>
</i></b><b><i><span style=3D"font-size:10.0pt;color:#e36c0a">AT&amp;T Conne=
ct for Mobile</span></i></b><b><i><span style=3D"font-size:10.0pt;color:#1f=
497d">
</span></i></b><b><i><span style=3D"font-size:10.0pt;color:#5f497a">now!<u>=
</u><u></u></span></i></b></p>
<p class=3D"MsoNormal"><i><span style=3D"font-size:10.0pt;color:#7030a0"><a=
 href=3D"http://itunes.apple.com/us/app/at-t-connect-mobile/id318798264?mt=
=3D8" target=3D"_blank"><span style=3D"color:#7030a0">iPhone</span></a> |
<a href=3D"http://downloads.uc.att.com/BB/Public/Latest/En/KB/att_connect.j=
ad" target=3D"_blank"><span style=3D"color:#7030a0">BB</span></a> |
<a href=3D"http://itunes.apple.com/il/app/at-t-connect-mobile-application/i=
d459888209?mt=3D8" target=3D"_blank">
<span style=3D"color:#7030a0">iPad</span></a>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0</span></i><span s=
tyle=3D"color:#1f497d"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><img border=3D"0" widt=
h=3D"186" height=3D"65" src=3D"cid:image001.png@01CCFBEB.65323FA0" alt=3D"D=
escription: Description: cid:image001.png@01C8E00D.2EC2BC90"><u></u><u></u>=
</span></p>

<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=A0<u></u></spa=
n></p>
</div>
</div>

</div><br></div>

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--00235429e04047d72104ba993454--

From ben@nostrum.com  Wed Mar  7 06:36:36 2012
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Subject: Re: [Simple] I-D Action: draft-saintandre-precis-nickname-00.txt
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(as individual)

I concur, although I might suggest a non-normative sentence or two =
explaining why we think that the simple-chat usage of nicknames fits =
that draft, and explicitly punting on confusable characters. That's all =
covered in Peter's draft, but it wouldn't hurt to repeat it here. If it =
takes more than two sentences, it's probably too much.

Thanks!

Ben.

On Mar 7, 2012, at 5:00 AM, Miguel A. Garcia wrote:

> Hi guys,
>=20
> I think this draft is a very good start.
>=20
> So, I believe the SIMPLE chat draft should just add one sentence with =
a normative statement pointing this draft, and we are done.
>=20
> Do we all agree that this is the path forward?
>=20
> /Miguel
>=20
> On 05/03/2012 23:25, Peter Saint-Andre wrote:
>> On 3/5/12 3:21 PM, Ben Campbell wrote:
>>>=20
>>> On Mar 5, 2012, at 4:18 PM, Peter Saint-Andre wrote:
>>>=20
>>>> On 3/5/12 3:16 PM, Ben Campbell wrote:
>>>>> Excellent! Thanks, Peter!
>>>>>=20
>>>>> Miguel, Geir Arne, and everyone else following this issue in =
SIMPLE: Does this draft meet our needs for simple-chat?
>>>>=20
>>>> This is a first pass.
>>>=20
>>> Of course--I should adjust my question to say "is this on the right =
track to meet our needs for simple-chat?" :-)
>>=20
>> I think it's on the right track, but I'm biased. :)
>>=20
>>>> IMHO it could be augmented with more details about
>>>> the avoidance of confusable characters, but that's quite a bit more =
work
>>>> and we need to figure out if the benefits are worth the cost.
>>>=20
>>> Agreed, and whether that decision is necessarily the same for MSRP =
as for XMPP.
>>=20
>> True. Even if some folks decide to go down the "avoid confusables" =
path,
>> I think it would be optional -- something that goes above and beyond
>> what is strictly necessary from a PRECIS point of view.
>>=20
>> Peter
>>=20
>=20
> --=20
> Miguel A. Garcia
> +34-91-339-3608
> Ericsson Spain


From pkyzivat@alum.mit.edu  Wed Mar  7 08:46:42 2012
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On 3/7/12 9:36 AM, Ben Campbell wrote:
> (as individual)
>
> I concur, although I might suggest a non-normative sentence or two explaining why we think that the simple-chat usage of nicknames fits that draft, and explicitly punting on confusable characters. That's all covered in Peter's draft, but it wouldn't hurt to repeat it here. If it takes more than two sentences, it's probably too much.

I agree. But note that this will be a normative dependency, and so will 
stall the progression of this draft until that one progresses.

	Thanks,
	Paul

> Thanks!
>
> Ben.
>
> On Mar 7, 2012, at 5:00 AM, Miguel A. Garcia wrote:
>
>> Hi guys,
>>
>> I think this draft is a very good start.
>>
>> So, I believe the SIMPLE chat draft should just add one sentence with a normative statement pointing this draft, and we are done.
>>
>> Do we all agree that this is the path forward?
>>
>> /Miguel
>>
>> On 05/03/2012 23:25, Peter Saint-Andre wrote:
>>> On 3/5/12 3:21 PM, Ben Campbell wrote:
>>>>
>>>> On Mar 5, 2012, at 4:18 PM, Peter Saint-Andre wrote:
>>>>
>>>>> On 3/5/12 3:16 PM, Ben Campbell wrote:
>>>>>> Excellent! Thanks, Peter!
>>>>>>
>>>>>> Miguel, Geir Arne, and everyone else following this issue in SIMPLE: Does this draft meet our needs for simple-chat?
>>>>>
>>>>> This is a first pass.
>>>>
>>>> Of course--I should adjust my question to say "is this on the right track to meet our needs for simple-chat?" :-)
>>>
>>> I think it's on the right track, but I'm biased. :)
>>>
>>>>> IMHO it could be augmented with more details about
>>>>> the avoidance of confusable characters, but that's quite a bit more work
>>>>> and we need to figure out if the benefits are worth the cost.
>>>>
>>>> Agreed, and whether that decision is necessarily the same for MSRP as for XMPP.
>>>
>>> True. Even if some folks decide to go down the "avoid confusables" path,
>>> I think it would be optional -- something that goes above and beyond
>>> what is strictly necessary from a PRECIS point of view.
>>>
>>> Peter
>>>
>>
>> --
>> Miguel A. Garcia
>> +34-91-339-3608
>> Ericsson Spain
>
> _______________________________________________
> Simple mailing list
> Simple@ietf.org
> https://www.ietf.org/mailman/listinfo/simple
>


From stpeter@stpeter.im  Wed Mar  7 08:51:45 2012
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On 3/7/12 9:46 AM, Paul Kyzivat wrote:
> On 3/7/12 9:36 AM, Ben Campbell wrote:
>> (as individual)
>>
>> I concur, although I might suggest a non-normative sentence or two
>> explaining why we think that the simple-chat usage of nicknames fits
>> that draft, and explicitly punting on confusable characters. That's
>> all covered in Peter's draft, but it wouldn't hurt to repeat it here.
>> If it takes more than two sentences, it's probably too much.
> 
> I agree. But note that this will be a normative dependency, and so will
> stall the progression of this draft until that one progresses.

Yes, that's unfortunate. However, a number of folks want to get the
PRECIS work done (e.g., the XMPP WG would like to finish 6122bis), so
with enough attention I think it can be completed fairly quickly.

It might help for folks here to review the PRECIS specs and provide some
"newbie" reviews for sanity...

http://tools.ietf.org/html/draft-ietf-precis-problem-statement-04

http://tools.ietf.org/html/draft-ietf-precis-framework-01

Thanks!

Peter

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



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Subject: Re: [Simple] I-D Action: draft-saintandre-precis-nickname-00.txt
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On Mar 7, 2012, at 10:46 AM, Paul Kyzivat wrote:

> On 3/7/12 9:36 AM, Ben Campbell wrote:
>> (as individual)
>>=20
>> I concur, although I might suggest a non-normative sentence or two =
explaining why we think that the simple-chat usage of nicknames fits =
that draft, and explicitly punting on confusable characters. That's all =
covered in Peter's draft, but it wouldn't hurt to repeat it here. If it =
takes more than two sentences, it's probably too much.
>=20
> I agree. But note that this will be a normative dependency, and so =
will stall the progression of this draft until that one progresses.
>=20

I think that's true of any path forward at this point. It would probably =
take longer to roll our own than to wait for PRECIS. I think that work =
is stable enough that we can probably "finish" the chat draft, and have =
it sit in the RFC editor queue until the dependencies clear.

Thanks!

Ben.=

From ag@ag-projects.com  Wed Mar  7 11:51:52 2012
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From: Adrian Georgescu <ag@ag-projects.com>
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Subject: [Simple] SIP SIMPLE / XMPP interoperability
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Hello,

There is ongoing work in the open source domain for properly bridging =
the two protocols together.

If you want to get involved or just watch the progress you can follow =
the 'SIP beyond VoIP' mailing list

http://lists.ag-projects.com/mailman/listinfo/sipbeyondvoip

Regards,
Adrian=

From suresh.krishnan@ericsson.com  Wed Mar  7 20:56:00 2012
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Cc: "simple@ietf.org" <simple@ietf.org>, Cullen Jennings <fluffy@iii.ca>
Subject: Re: [Simple] I-D Action: draft-ietf-simple-chat-14.txt
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Hi Miguel,
  Your changes look good to me. Thanks for taking care of this.

Cheers
Suresh

On 03/02/2012 02:50 AM, Miguel Garcia A wrote:
> I have just submitted a new version of the SIMPLE chat room draft. This 
> one does not yet consider the internationalization and normalization of 
> nicknames, which is scheduled for version -15.
> 
> This version -14 addresses comments by Cullen, Suresh, Christer, and 
> Saul. Please guys, verify that your changes are implemented according to 
> your needs, and if you are not totally satisfied, you can still complain 
> and we will fix it in version -15.
> 
> Diff with the previous version:
> 
> http://tools.ietf.org/rfcdiff?url2=draft-ietf-simple-chat-14
> 
> /Miguel
> 
> On 02/03/2012 8:39, internet-drafts@ietf.org wrote:
>>
>> A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the SIP for Instant Messaging and Presence Leveraging Extensions Working Group of the IETF.
>>
>> 	Title           : Multi-party Chat Using the Message Session Relay Protocol (MSRP)
>> 	Author(s)       : Aki Niemi
>>                            Miguel A. Garcia-Martin
>>                            Geir A. Sandbakken
>> 	Filename        : draft-ietf-simple-chat-14.txt
>> 	Pages           : 37
>> 	Date            : 2012-03-01
>>
>>     The Message Session Relay Protocol (MSRP) defines a mechanism for
>>     sending instant messages within a peer-to-peer session, negotiated
>>     using the Session Initiation Protocol (SIP) and the Session
>>     Description Protocol (SDP).  This document defines the necessary
>>     tools for establishing multi-party chat sessions, or chat rooms,
>>     using MSRP.
>>
>>
>> A URL for this Internet-Draft is:
>> http://www.ietf.org/internet-drafts/draft-ietf-simple-chat-14.txt
>>
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
>>
>> This Internet-Draft can be retrieved at:
>> ftp://ftp.ietf.org/internet-drafts/draft-ietf-simple-chat-14.txt
>>
>> _______________________________________________
>> Simple mailing list
>> Simple@ietf.org
>> https://www.ietf.org/mailman/listinfo/simple
>>
> 


From stpeter@stpeter.im  Mon Mar 19 09:54:45 2012
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

FYI, I will talk about the internationalization aspects of nickname
handling in the PRECIS session at IETF 83.


- -------- Original Message --------
Subject: [precis] IETF83 Paris draft agenda
Date: Mon, 19 Mar 2012 19:51:26 +0900
From: Yoshiro YONEYA <yoshiro.yoneya@jprs.co.jp>
To: precis@ietf.org

Dear all,

Sorry for the delayed notification.
Following is draft agenda for IETF 83 Paris.  Please sned
comments/additions/changes to the chairs.

1. Administrativia
2. Document updates / Discussion
  2.1 WG I-Ds
    (1) Problem-statement

https://datatracker.ietf.org/doc/draft-ietf-precis-problem-statement/
    (2) Framework
      https://datatracker.ietf.org/doc/draft-ietf-precis-framework/
  2.2 Individual Documents
    (1) Mapping characters for PRECIS classes
      https://datatracker.ietf.org/doc/draft-yoneya-precis-mappings/
    (2) Username and Password Preparation Algorithms
      https://datatracker.ietf.org/doc/draft-melnikov-precis-saslprepbis/
    (3) Preparation and Comparison of Nicknames
      https://datatracker.ietf.org/doc/draft-saintandre-precis-nickname/
3. Next steps

Marc & Yoneya, co-chairs

- -- 
Yoshiro YONEYA <yoshiro.yoneya@jprs.co.jp>

_______________________________________________
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