[Standards] Proposed XMPP Extension: Extensible SASL Profile

Dave Cridland dave at cridland.net
Thu Feb 9 10:36:30 UTC 2017


On 9 February 2017 at 10:08, Evgeny Khramtsov <xramtsov at gmail.com> wrote:
> Thu, 9 Feb 2017 09:41:43 +0000
> Dave Cridland <dave at cridland.net> wrote:
>
>> Because the server has to send an empty string, not the absence of a
>> challenge.
>
> When does it make a difference (i.e. empty string vs its absence)?

For a challenge, I can't think of a case, and I'm unclear if the
specification (RFC 4422) allows it. For a response, it might. For
initial data and additional data on success, it certainly does.

Maybe worth hoping Kurt or Alexey pitch in here...

Dave.


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