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Re: [cf-dev] Question about Multicast Implementation
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Would you have a basic idea of which californium classes I must
consider for the implementation. Since the number of classes involved
is quite large.
Thanks for The fast reply.
Zitat von "Hudalla Kai (INST/ESY1)" <Kai.Hudalla@xxxxxxxxxxxx>:
This draft is currently not supported by Californium and (to my
knowledge) there
is also no work going on to add support for it.
So, if you want to start working on it and contribute it to
Californium, we may
be able to support you in the process. However, my personal priorities are
different ones currently ...
--
Mit freundlichen Grüßen / Best regards
Kai Hudalla
Chief Software Architect
Bosch Software Innovations GmbH
Schöneberger Ufer 89-91
10785 Berlin
GERMANY
www.bosch-si.com
Registered office: Berlin, Register court: Amtsgericht Charlottenburg,
HRB 148411 B;
Executives: Dr.-Ing. Rainer Kallenbach, Michael Hahn
On Tue, 2017-02-21 at 23:32 +0100, Thorsten Rick wrote:
Hi Kai,
thanks for the fast reply.
I am trying to implement a multicast DTLS communication as it is
explained in the draft:
https://tools.ietf.org/html/draft-keoh-dice-multicast-security-08
Best regards
Thorsten Rick
Zitat von "Hudalla Kai (INST/ESY1)" <Kai.Hudalla@xxxxxxxxxxxx>:
> Hi Thorsten,
>
> I am not completely sure about what you want to achieve. However,
doing CoAP
> multicast is currently only defined for UDP transpor.
> RFC 7252, Section 8.1 states the following:
>
> "At the time of writing, multicast messages can only be carried in UDP
> not in DTLS. This means that the security modes defined for CoAP in
> this document are not applicable to multicast."
>
> As such, Californium does not support multicast over DTLS. It is
supposed to
> support multicast over UDP. I have to admit, though, that this is
> not really my
> area of expertise and my organization doesn't have any usecase based
> on multicast
> at the moment. There seems to be some interest in the community for doing
> multicast, though, and there have been issues found with
> Californium's multicast
> implementation already [1].
>
> All in all, I would say that Californium definitely strives for supporting
> multicast (over UDP) but currently has some issues with it. So,
if you feel
> motivated to give us a hand, you would be more than welcome to e.g.
> continue the
> work started in [1].
>
> [1] https://github.com/eclipse/californium/pull/95
> --
> Mit freundlichen Grüßen / Best regards
>
> Kai Hudalla
> Chief Software Architect
>
> Bosch Software Innovations GmbH
> Schöneberger Ufer 89-91
> 10785 Berlin
> GERMANY
> www.bosch-si.com
>
> Registered office: Berlin, Register court: Amtsgericht Charlottenburg,
> HRB 148411 B;
> Executives: Dr.-Ing. Rainer Kallenbach, Michael Hahn
>
> On Tue, 2017-02-21 at 12:51 +0100, Thorsten Rick wrote:
> > Hi list,
> >
> > I have a question about a basic multicast CoAp DTLS implementation.
> >
> > I am currently working on a proof-of-concept for my Masterthesis by
> > using a CoAp DTLS PSK implementation.
> > I have been able to successfully implement a basic secure unicast
> > communication, but for a few days I have been trying to implement a
> > multicast communication without a result. My question is whether in
> > the current version a multicast solution is possible at all and if so
> > if someone has an exemplary implementation.
> >
> >
> > Thanks in advance
> > T. Rick
> >
>
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--
Thorsten Rick
