On 15 Aug 2013, at 14:50, Kevin Smith <[email protected]> wrote:
> On Thu, Aug 15, 2013 at 1:55 PM, Laine Markku <[email protected]> wrote:
>> I am about to start building a real-time collaborative web application using
>> XMPP. I already figured out that in order to use XMPP on the Web one should
>> use either "XEP-0206: XMPP Over BOSH"
>> (http://xmpp.org/extensions/xep-0206.html) or "An XMPP Sub-protocol for
>> WebSocket"
>> (https://tools.ietf.org/html/draft-moffitt-xmpp-over-websocket-03) together
>> with an XMPP client library for JavaScript (e.g, Strophe.js,
>> http://strophe.im/strophejs/) and an XMPP server (e.g., Openfire,
>> http://www.igniterealtime.org/projects/openfire/) supporting them.
>>
>> What I am still missing is how to keep data in sync between collaborators. I
>> ran into a couple of XEPs dealing with the issue, such as "XEP-0228:
>> Requirements for Shared Editing" (http://xmpp.org/extensions/xep-0228.html),
>> "XEP-0204: Collaborative Data Objects"
>> (http://xmpp.org/extensions/xep-0204.html), and "XEP-0284: Shared XML
>> Editing" (http://xmpp.org/extensions/xep-0284.html). Unfortunately, all of
>> them have been deferred.
>>
>> Therefore, my question is what would be a recommended way to implement
>> real-time collaborative editing of (XML) documents between XMPP clients?
>> Preferably supporting Operational Transformation (OT,
>> https://en.wikipedia.org/wiki/Operational_transformation).
>
> Swift has a whiteboarding shared document editor based on OT from a
> GSoC student last year. It's not been submitted for XEPness yet - the
> start of work on that is visible at
> https://www.dropbox.com/s/fewo76yu3bnaoxv/xep-whiteboard.xml - it's
> high on Remko's list to work on getting this submitted.
There's also this from ages ago which didn't seem to make it anywhere:
http://xmpp.org/extensions/inbox/whiteboard.html
I would be interested to see this defined against a MUC or (Preferably) PubSub
backend too.
--
Ash
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