On Mon Oct 6 12:13:16 2008, Michal 'vorner' Vaner wrote:
You can, TCP does not loose bytes in the middle. You are sure all
stanzas _before_ the ping got trough.
Hmmm... You're sure all the octets got through, not whether they're
going to be handled.
I'm afraid I'm with Pedro on this.
XEP-0198's acks offer rather more, because they confer an exchange of
responsibility, not just data.
FWIW, while we're on the subject of reliability, lots of people seem
to think that XEP-0198 doesn't provide it - it does provide
hop-by-hop reliability. It doesn't provide either end-to-end
reliability, nor does it make guarantees that stanzas will get
through.
Reliability means knowing when things have conclusively worked, *or
failed*.
(I'll have to tell my wife that, and explain that since I always
forget to hang the washing out, I'm therefore technically reliable.)
Dave.
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