On 2013-08-06 22:15, Daniele Ricci wrote: > Please correct me if I'm wrong at any point, just to be sure I > understand XEP 198 and how I can use it in the right way. > > First of all, in this: > "the client or server can send ack elements at any time over the stream" > > this means that I can send <a/> or <r/> just for message stanzas.
You're wrong. XMPP requires in-order delivery of stanzas. TCP guarantees that things are received in the same order as they are sent. When you send <a h='x'/>, that means that you received all stanzas up to number x. The other end knows how many stanzas it sends, so it knows which are acked and which are not. Therefore, you can't ack "just for message stanzas", as you actually ack all stanzas up to that point. I hope this makes sense. -- Kim "Zash" Alvefur
signature.asc
Description: OpenPGP digital signature
