[Standards-JIG] In order delivery for xep-0047 ?

Peter Saint-Andre stpeter at jabber.org
Fri Dec 8 03:55:57 UTC 2006


Remko Tronçon wrote:
>> No, it is not. That would be in order delivery.
>> There are protocols and contracts which mandate in order delivery - xmpp
>> is not one of them though.
> 
> *If* that is true, this should definitely be specified in the new
> version of the RFC. The possibility of delivering messages out of
> order puts a huge burden on the client, and I don't think any client
> copes with this (for example, when sending MUC history). Even worse,
> if a server can reorder messages, then the client will sometimes show
> messages in the wrong order, which is untolerable in an IM context.

rfc3920bis currently says:

   Compliant server implementations MUST ensure in-order processing of
   XML stanzas between any two entities.  This includes stanzas sent by
   a client to its server for direct processing by the server.

/psa


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