[cf-dev] coap+tcp

["Hudalla Kai (INST/ESY1)" <Kai.Hudalla@xxxxxxxxxxxx>]

Hi list,

we had started a discussion about the current status of coap+tcp support in
Californium and how we want to proceed with it.

Achim correctly pointed out that there is no reason to not have this discussion
on th emailing list. So here it is :-)

-- 
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

-------- Forwarded Message --------

Date: Wed, 23 Nov 2016 08:55:41 +0000
Subject: AW: coap+tcp
To: Hudalla Kai (INST/ESY1) <Kai.Hudalla@xxxxxxxxxxxx>, joe.magerramov@xxxxxxxxx
<joe.magerramov@xxxxxxxxx>
From: Kraus Achim (INST/ESY1) <Achim.Kraus@xxxxxxxxxxxx>
> Hi all,
> 
> > Achim currently seems to have a lot of interest in getting coap-over-tcp to
> > work for leshan. 
> 
> Yes, I mainly want to see, if TCP and UDP makes much difference in a mobile
> environment (as
> Works better even with "bad" connectivity).
> And it's not only getting  leshan working, I think the integration of the tcp
> stuff into californium
> should also be improved (e.g. Client TCP connector allows only 1 outgoing
> connection) 
> Or the correlation stuff, I added yesterday. It seems, that current
> progress/changes in the UDP part
> wasn't really applied to the tcp part. 
> 
> > However, so far he hasn't started to implement CSM ...
> 
> Yes, I haven't started and I don't think that I would do this in a near
> future,  
> because for communication experiments, if you control both sides, 
> it's not required to be general interoperable.
> But it would be cool, if it gets done.
> 
> P.S.: any reason for not discussing in the cal-dev list?
> 
> Mit freundlichen Grüßen / Best regards
> 
> Achim Kraus
> 
> Bosch Software Innovations GmbH
> Communications (INST/ESY1)
> Stuttgarter Straße 130
> 71332 Waiblingen
> GERMANY
> www.bosch-si.de
> www.blog.bosch-si.com 
> 
> Tel. +49 711 811-58139
> achim.kraus@xxxxxxxxxxxx
> 
> Registered office: Berlin, Register court: Amtsgericht Charlottenburg, HRB
> 148411 B
> Executives: Dr.-Ing. Rainer Kallenbach; Michael Hahn
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: Hudalla Kai (INST/ESY1) 
> Gesendet: Mittwoch, 23. November 2016 09:26
> An: joe.magerramov@xxxxxxxxx
> Cc: Kraus Achim (INST/ESY1) <Achim.Kraus@xxxxxxxxxxxx>
> Betreff: Re: coap+tcp
> 
> Hey Joe,
> 
> thanks for the update. I guess we will then ship 1.1 with "preliminary &
> experimental" support for coap-over-tcp eplicitly stating that it's on draft 02
> level.
> 
> Achim currently seems to have a lot of interest in getting coap-over-tcp to
> work for leshan. However, so far he hasn't started to implement CSM ...
> 
> Maybe that is something you would be interested to work on together?
> --
> 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, 2016-11-22 at 03:56 +0000, Joe Magerramov wrote:
> > So looks like mostly some clarifications on observe, and more 
> > flexibility on handling CSM message. Nothing major. The biggest gap 
> > between current TCP impl, and RFC remains support for CSM messages. I 
> > think I have a proposal on what it would take to support those in 
> > another thread, but unfortunately it's not a trivial change.
> > 
> > Without CSM support californium won't be compatible with TCP based 
> > devices that adhere to the spec. So we won't be able to mark the 
> > feature anything but experimental.
> > On Wed, Nov 16, 2016 at 7:22 AM Joe Magerramov 
> > <joe.magerramov@xxxxxxxxx>
> > wrote:
> > > Didn't see 05 :-/. Let me give it a read today.
> > > On Tue, Nov 15, 2016 at 11:37 PM Hudalla Kai (INST/ESY1) 
> > > <Kai.Hudalla@bosch-s i.com> wrote:
> > > > I hope you are talking about draft-05 ;-) ...
> > > > 
> > > > Regarding the release: if we agree that we need some/a lot more 
> > > > time to implement
> > > >  draft-05 then I'd say that we shouldn't wait much longer and get 
> > > > 1.1 out ASAP.
> > > > It would then mainly contain bugfixes, improvements etc. but not 
> > > > really new features. But that's okay, we need to release more frequently
> > > > anyways ...
> > > > 
> > > > --
> > > > 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, 2016-11-15 at 01:24 +0000, Joe Magerramov wrote:
> > > > > Nope, haven't had time to adapt to 04 version of RFC :(. And 
> > > > > reinvent is
> > > > 
> > > > coming
> > > > > up, so my time doesn't look good in immediate future.
> > > > > 
> > > > > When did think about releasing 1.1?
> > > > > 
> > > > > 
> > > > > 
> > > > > On Mon, Nov 14, 2016 at 5:37 AM Hudalla Kai (INST/ESY1) 
> > > > > <Kai.Hudalla@bosc
> > > > 
> > > > h-si.c
> > > > > om> wrote:
> > > > > > Hey Joe,
> > > > > > 
> > > > > > did you find some time working on adapting the latest TCP 
> > > > > > draft? Looks
> > > > 
> > > > like
> > > > > > they
> > > > > > are close to releasing it ...
> > > > > > 
> > > > > > I was wondering whether we should do a 1.1 release with only
> > > > 
> > > > "experimental"
> > > > > > support for TCP only in the meantime or whether it makes sense 
> > > > > > to wait
> > > > 
> > > > some
> > > > > > more
> > > > > > time...
> > > > > > 
> > > > > > --
> > > > > > 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
> > > > > >