Dave Cridland wrote:
It's possible, I suppose, that the remote client went offline before the <message/>, and came back online after, just in time to get the <iq/>, but it seems terribly unlikely, especially as you'd also see a <presence/> update as it came back online.
This may also happens if the remote client doesn't process the stanza because of an internal error (race condition for example).
-- Regards, Evgeniy Khramtsov, ProcessOne. xmpp:x...@jabber.ru.
