On Thu, Mar 1, 2012 at 2:13 AM, XMPP Extensions Editor <[email protected]> wrote: > Version 0.1 of XEP-0312 (PubSub Since) has been released.
I have two main problems with this, the first is that using timestamp-equivalents isn't a reliable way of syncing things on the network. We have this approach in XEP-0045, and it results in duplicates quite a lot of the time (without the added buffer period in 312) I suspect it also results in missed messages, although I've clearly never seen them. The buffer period makes missed messages less likely (although still possible), but increases the chance of duplicates. It's not clear to me that this isn't harmful. The second is that there are many other times a pubsub service will receive delay inside a presence, and this proposal could result in duplication within a single stream. /K
