[zeromq-dev] ZeroMQ for Contiki OS

Wed Jan 20 17:08:39 CET 2016

Got it.

It seems I don't have sufficient rights to create a repo in the
organisation.
Please, could you either add me the right, or create a repo named
"contiki-zmtp"?

By the way, there are zmq.c/h files in the current implementation in which
I have put things built on top of the ZMTP implementation (typically socket
related stuff, module initialisation).
Should I merge what it contains to zmtp.c/h (for instance), or find another
name for it?

Cheers,
Axel

--
Contact: axel.voitier at gmail.com
Secure: axel.voitier at protonmail.ch

2016-01-20 16:47 GMT+01:00 Pieter Hintjens <ph at imatix.com>:

> I've updated the trademark policy since it was slightly out of date.
>
> http://zeromq.org/docs:trademark-policy
>
> The goal of this policy is to ensure that users know what they're
> getting. In your case I'd use -zmtp in the name, or call it something
> else.
>
>
> On Wed, Jan 20, 2016 at 4:20 PM, Axel Voitier <axel.voitier at gmail.com>
> wrote:
> > Hi Pieter,
> >
> > Neat! :)
> >
> > Yes, it would be nice if it spawns interest for other embedded targets.
> > I am all for the C4.1 policy, and for the move to the zeromq
> organization.
> > Thanks for proposing!
> >
> > Could you enlighten me about what can be named zeromq actually? Is it the
> > full set of ZMTP+all sockets behaviour, or is it just limited to libzmq
> and
> > its bindings?
> > I guess the name of the project can then be changed to contiki-zmtp (or
> > contiki-libzmtp?) when moving to the organisation.
> >
> >
> > Cheers,
> > Axel
> >
> > --
> > Contact: axel.voitier at gmail.com
> > Secure: axel.voitier at protonmail.ch
> >
> > 2016-01-20 12:47 GMT+01:00 Pieter Hintjens <ph at imatix.com>:
> >>
> >> Oh, and I sent you your first pull request. :)
> >>
> >> On Wed, Jan 20, 2016 at 12:39 PM, Pieter Hintjens <ph at imatix.com>
> wrote:
> >> > Hi Axel,
> >> >
> >> > This is really cool... could be the basis for other embedded projects.
> >> > I'd like to move this into the zeromq organization and use our C4.1
> >> > contribution policy, is that OK?
> >> >
> >> > The name suggests you ported libzmq, which is misleading. It'd be
> >> > better to say "ZMTP" instead of "ZeroMQ".
> >> >
> >> > I've invited you to the ZeroMQ core team so you can move this project
> >> > (if you approve of this idea).
> >> >
> >> > -Pieter
> >> >
> >> >
> >> > On Wed, Jan 20, 2016 at 11:47 AM, Axel Voitier <
> axel.voitier at gmail.com>
> >> > wrote:
> >> >> Yes, I actually started from libzmtp. Few things remain from it now
> >> >> (channels and msgs) as I had to adapt it to whatever Contiki
> provides.
> >> >> Contiki does not have a posix socket interface. But the hardest was t
> >> >> adapt
> >> >> to its threading model (protothreads) which were really
> constraining...
> >> >>
> >> >> Also, I adapted the memory allocations to do use as much as possible
> >> >> preallocation (called memb in Contiki). A few malloc remains here and
> >> >> there,
> >> >> but much less than initially.
> >> >>
> >> >>
> >> >> However, if I was to restart this project, I would not pick Contiki
> >> >> anymore.
> >> >> But rather give it a try with RIOT, which seems to have something
> that
> >> >> match
> >> >> a POSIX interface. And a much saner threading model that behaves a
> bit
> >> >> like
> >> >> an event loop with a hub (and reusing features from the underlying
> MCU
> >> >> to do
> >> >> context switching, like the SVC instruction with ARM).
> >> >>
> >> >>
> >> >> Cheers,
> >> >> Axel
> >> >>
> >> >> --
> >> >> Contact: axel.voitier at gmail.com
> >> >> Secure: axel.voitier at protonmail.ch
> >> >>
> >> >> 2016-01-20 9:31 GMT+01:00 Benjamin Henrion <zoobab at gmail.com>:
> >> >>>
> >> >>> On Wed, Jan 20, 2016 at 4:01 AM, Axel Voitier <
> axel.voitier at gmail.com>
> >> >>> wrote:
> >> >>> > Hello,
> >> >>> >
> >> >>> > I have published an attempt at porting zeromq to Contiki OS:
> >> >>> > https://github.com/Alidron/contiki-zeromq
> >> >>> >
> >> >>> > It has a few limitations still. However, I covered most basics of
> >> >>> > ZMTP
> >> >>> > and a
> >> >>> > handful of sockets. It is not entirely compliant with the RFCs for
> >> >>> > the
> >> >>> > moment though (some parts prove to be harder to do than I
> expected).
> >> >>> >
> >> >>> > I have been able to run it on a constrained setup: ARM Cortext M3
> >> >>> > running at
> >> >>> > 32MHz, with 512KB of flash (the demo programs weight about 130KB)
> >> >>> > and
> >> >>> > 80KB
> >> >>> > of RAM. And with a sub-1GHz RF link.
> >> >>> >
> >> >>> > The implementation makes use of Contiki network stack, which can
> use
> >> >>> > TCP,
> >> >>> > IPv4, IPv6 and 6LoWPAN. I actually tested it over 6LoWPAN on the
> >> >>> > sub-GHz
> >> >>> > link :).
> >> >>> >
> >> >>> > It is not has featured and fast as running zeromq between two
> usual
> >> >>> > computers. But I hope this implementation prove it is feasible to
> >> >>> > have
> >> >>> > ZeroMQ on such constrained hardware :).
> >> >>>
> >> >>> Have you tried to compile libzmtp?
> >> >>>
> >> >>> One of my short-term goal is to make libzmptp running on esp8266 and
> >> >>> some cortex m3 board.
> >> >>>
> >> >>> --
> >> >>> Benjamin Henrion <bhenrion at ffii.org>
> >> >>> FFII Brussels - +32-484-566109 - +32-2-3500762
> >> >>> "In July 2005, after several failed attempts to legalise software
> >> >>> patents in Europe, the patent establishment changed its strategy.
> >> >>> Instead of explicitly seeking to sanction the patentability of
> >> >>> software, they are now seeking to create a central European patent
> >> >>> court, which would establish and enforce patentability rules in
> their
> >> >>> favor, without any possibility of correction by competing courts or
> >> >>> democratically elected legislators."
> >> >>> _______________________________________________
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> >> >>
> >> >>
> >> >>
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