iqnets: opportunistic XYZ, e.g. "begin xmit"

[Zenaan Harkness]

On Thu, Oct 31, 2019 at 03:24:50PM +1100, Zenaan Harkness wrote:
> On Thu, Oct 31, 2019 at 02:36:27PM +1100, Zenaan Harkness wrote:
> > >   - When we do achieve internet wide QoS contracts at the network
> > >     layer, a privacy issue (depending on your threat model) will be
> > >     which QoS modes to utilize - e.g. you may be better off using
> > >     "bulk fill", rather than "telephone audio" class QoS, in order to
> > >     better hide your important phone call.
> > 
> > One way to use bulk fill for real time data, is for links (i.e. peer
> > nodes), to simply "maintain excess headroom during requisite (phone
> > call) time".
> > 
> > This implies the need to hide a node's (downwards) phys link
> > utilization:
> > 
> >   - either all nodes always reserve a relevant phys link %, e.g.:
> >     - 2%, or 10KiB/s, whichever is greater,
> >     - unless total phys link is less than 30 KiB/s,
> >       in which case this node must essentially act as a client only
> >       node (a comparatively unsafe option (presumably))
> 
>   - or, we institute a randomization protocol, so that at one time or
>     another links are "normally, but randomly" headroom shaped down a
>     bit
> 
> Again, achieving actual randomness, ain't easy.
> 
> And we must (!) modulo against user requirements as well, every time
> we plan to institute some randomization scheme.
> 
> Further, for the use case of phone calls, we are talking randomized
> appearance of "headroom shaped routes", and -not- randomized
> appearance of "headroom shaped links" - these are similar, but quite
> different, things.
> 
> Phone calls require routes.
> 
> If all "usable" links are independent, (link set) intersections
> constituting usable links would be greatly diminished - ahh,

s/links/routes/

> probably, since perhaps not - if we consider links between known
> friends, where such links (when they randomly appear) can be used as
> single hop p2p link for phone calls.
> 
> Maths, especially statistical, set and algebraic math, can be pretty
> interesting since it can be so useful.
>