On 5 June 2015 at 07:24, Florian Schmaus <f...@geekplace.eu> wrote: > On 04.06.2015 09:39, Kevin Smith wrote: > > On 3 Jun 2015, at 16:02, XMPP Extensions Editor <edi...@xmpp.org> wrote: > >> http://xmpp.org/extensions/inbox/nonza.html > > > The definition here seems potentially useful. I would add a ‘generally’ > to 4 so that it becomes “...they are generally used in a more…”, so as not > to be seen as prescriptive. > > Good point, going to change it. > > > None of the current nonzas are routed, but it doesn’t seem impossible > that one might be in the future, and I don’t see a reason to forbid it > here. Noting that they’re not expected to be routed seems useful and > sufficient, to me. > > If you want to send something that is supposed to get routed, why > wouldn't you use simply a Stanza instead? I consider it a security > improvement if routing of Nonzas is explicitly forbidden. >
I think the definition of a stanza is a routed top-level element, so an extension that negotiated "routed Nonzas" is actually negotiating a new stanza type. My reading of RFC 6120 seems to leave room for negotiating new stanzas (and moreover, they needn't have the common attributes of §8.1). However, I don't think that RFC 6120 actually defines what a stanza *is*. Sending an unknown top-level element gives you an <unsupported-stanza-type/> error, and it lists what stanzas it defines, and talks a lot about them. But nowhere does it say, much to my surprise, something like "Stanzas are first-child element of the stream that are routable between XMPP entities addressable by jids". This leaves this XEP in something of a quandry. It defines "Nonzas" as non-stanzas, but since there's actually no definition of a stanza, so the definition isn't defining much. So what I'd like to see is that this document actually defines three terms, not just one: 1) Stanza. I think we understand what this means. (We may disagree over whether entities could add to the existing set, mind). 2) Nonza. I really hate the term, actually, even "Non-Stanza" or "Unstanza" would be better, but this is a matter of taste rather than anything more. 3) Some convenient term of art for first child elements of the stream - ie, the collective term for both Stanzas and Nonzas. It might help to go further, and make this a glossary of the terms of art we use, either providing canonical definitions or pointing to those defined elsewhere. Dave.
