[Debian-iot-maintainers] Bug#859980: libcoap-1-0-bin: Please compile binaries with DTLS support

[Carsten Schoenert]

Control: tags -1 upstream

Hello Mattias,

On Sun, Apr 09, 2017 at 10:57:32PM +0200, Mattias Mattsson wrote:
> Package: libcoap-1-0-bin
> Version: 4.1.2-1
> Severity: wishlist
> 
> Dear Maintainer,
> 
> *** Reporter, please consider answering these questions, where appropriate ***
> 
> DTLS in the coap-client binary is required to be able to use it for
> interfacing with the IKEA TRÅDFRI Gateway. Please consider linking it
> against e.g. tinydtls. More info here:
> 
> 
> https://github.com/obgm/libcoap/tree/dtls
> http://www.domoticz.com/forum/viewtopic.php?f=56&t=13882&p=126998#p127216
> http://mjg59.dreamwidth.org/47803.html
> https://bitsex.net/software/2017/coap-endpoints-on-ikea-tradfri/

DTLS is currently not available in official releases of libcoap.
TinyDTLS isn't planned to be fully usable within the next devlopment
circle nor in the existing release 4.1.2.

As I'm part of the upstream project I'm in contact with Olaf all over
the time. The current dtls branch is lacking some recently added fixes
and features that are applied to the develop branch in the between
times. Also the current dtls branch needs the libcoap to be compiled as
a static library. That's abviously not what we in Debian want.

Note some issues from the GitHub bug tracker
https://github.com/obgm/libcoap/issues/19
https://github.com/obgm/libcoap/issues/75

and the ML
https://sourceforge.net/p/libcoap/mailman/libcoap-developers/thread/87shz9s6fd.fsf%40aung.informatik.uni-bremen.de/#msg34974708

If you want detailed information about the current state and plans
about dtls support within libcoap please ask on the ML of libcoap.

https://lists.sourceforge.net/lists/listinfo/libcoap-developers

Sorry, there is not much what we can do here. If upstream is supporting
a proper DTLS integration I'm happy to prepare a backport later.

Regards
Carsten