[Standards] NEW: XEP-0470 (Pubsub Attachments)

2022-08-23 Thread XSF Editor
Version 0.1.0 of XEP-0470 (Pubsub Attachments) has been released.

Abstract:
This specification provides a way to attach elements to a pubsub item.

Changelog:
Accepted by vote of Council on 2022-07-27. (XEP Editor (jsc))

URL: https://xmpp.org/extensions/xep-0470.html

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[Standards] NEW: XEP-0469 (Bookmark Pinning)

2022-08-23 Thread XSF Editor
Version 0.1.0 of XEP-0469 (Bookmark Pinning) has been released.

Abstract:
This document defines an XMPP protocol extension to allow users to pin
PEP Native Bookmarks.

Changelog:
Accepted by vote of Council on 2022-07-27. (XEP Editor (jsc))

URL: https://xmpp.org/extensions/xep-0469.html

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[Standards] STABLE: XEP-0215 (External Service Discovery)

2022-08-23 Thread XSF Editor
Version 1.0.0 of XEP-0215 (External Service Discovery) has been
released.

Abstract:
This document specifies an XMPP protocol extension for discovering
services external to the XMPP network.

Changelog:
Accept as Stable as per Council Vote from 2022-08-03. (XEP Editor
(jsc))

URL: https://xmpp.org/extensions/xep-0215.html

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[Standards] UPDATED: XEP-0447 (Stateless file sharing)

2022-08-23 Thread XSF Editor
Version 0.2.0 of XEP-0447 (Stateless file sharing) has been released.

Abstract:
This specification describes a protocol for stateless asynchronous
file sharing with integrity and transport flexibility. It allows
clients to provide a good interoperable user experience in combination
with Carbons and MAM.

Changelog:
Add disposition attribute to signal when inlining is desired. (lmw)

URL: https://xmpp.org/extensions/xep-0447.html

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Re: [Standards] NEW: XEP-0397 (Instant Stream Resumption)

2022-08-23 Thread Florian Schmaus
On 22/08/2022 16.07, Daniel Gultsch wrote> I have some new found 
interest in Instant Stream Resumption and after

reading the XEP again I find myself agreeing with a lot of what Dave
said 4.5 years ago especially with regard to decoupling the HT-*
family of authentication from ISR itself. One might argue that more
XEPs means more complexity but to the contrary I think it would
actually reduce complexity because one could - theoretically -
implement ISR with PLAIN and then not having to worry about HT-* and
channel binding. (Don’t get me wrong I like channel binding and I like
HT-* but if one is in the market for some quick and easy stream
resumption being able to do it with PLAIN would help a lot.)


The XEP is written with that in mind (as far as I remember). It has a 
strong bias towards SASL HT-* as this mechanisms protects the token, 
whereas using PLAIN does not. Furthermore, it is not immediately clear 
what Instant Stream Resumption (ISR) and SASL PLAIN exactly is, as there 
are (at least) two approaches imaginable (that also do not rule each 
other out): First, perform ISR + SASL PLAIN with the users password. 
Which would be a big step backwards in terms of security. Second, 
perform ISR + SASL PLAIN with the token obtained by ISR. Obviously 
better than the first variant, while not as secure as HT-*.


I think all variants, including the HT-* one have different advantages 
and disadvantages, and we ultimately need more implementation 
experience. So, by all means, please go ahead.




What Dave outlined in his comment to §4 seems sensible enough to me?!


I am not sure what the advantage of obtaining the ISR token 
simultaneously with the SASL authentication. You need to do the 
request/response pair to enable Stream Management anyway afterwards 
(unless you would use bind2, I assume, in which case it wouldn't matter 
what the parent of the the  XML element is).


What am I missing?



Minor stuff: I’m also agreeing with the feedback on location and
compression. However the above (allowing multiple SASL mechanisms) is
the urgent one for me right now.


I can't find anything regarding 'compression' in Dave's Mail from 
2018-01-22. Furthermore, I am not sure how the 'location' attribute from 
Stream Management can be re-used or how that would improve things. 
Again, being slightly jet lagged, I am maybe missing something. Examples 
would probably help.


In summary, please go ahead and implement ISR in any way you feel 
sensible and report back your findings. :)


- Flow



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