[Standards] XEP-0220 unclear?
weasel at tlen.pl
Tue Apr 20 10:00:50 UTC 2010
On 2010-04-20, at 08:36, Philipp Hancke wrote:
> Hi Luke,
>> I've ran on some hickup during server dialback implementation. Mr. Saint-Andre recommended me to post a message here. Here's this exact problem (only 4 years ago) with stanzas to follow:
>> I'd be grateful for any pointers.
> That is described in section 2.1.2:
> "To do so, either it can reuse an existing XML stream or it needs to
> establish a new connection."
> or in step 5 in RFC 3920, section 8.3:
> "(Note: As an optimization, an implementation MAY reuse an existing
> connection here.)"
I dont think that's even slightly clear that "reuse EXISTING connection" means "quickly establish new one and pretend like nothing happened"
> The order of dialback steps described by Ben is:
> ME-GT --> step 1
> GT-ME --> step 1
> ME2-GT --> step 2
> ME2-GT <-- step 3
> GT-ME --> step 4
> GT-ME <-- step 2
> (connection identifier, stanza direction, dialback step)
> GT is a little impolite by initiating it's own dialback before sending
> the verification key. While that is a valid optimization, it makes
> dialback flows very hard to read.
> XEP 220 recommends (see 2.1.1) that the originating server does not initiate dialback unless it has queued any stanzas for the peer.
> hope that helps
Also ejabberd implementation does exactly the same thing. While I dont mean to be negative, dont you think it's a little "over-optimized"?
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