[Development] QtCoap: QNAM-like API or not

[Timur Pocheptsov]

Thiago, thanks for the clarification. Yeah, you have a point, I agree with those reasons though they are more server-related and CoAP module has no one yet. I was also thinking that having a TP status on CoAP module can help to mitigate possible API/design problems/inconsistency.


Maurice:


> if DTLS takes too long to implement and CoAP would stay for a very long time in TP mode.


It should not, but it's too early/too late given feature-freeze in 2 weeks - so it's for 5.12.

Could we have CoAP as TP given DTLS will be in 5.12?


Best regards,

    Timur.

________________________________
From: Development <development-bounces+timur.pocheptsov=qt.io at qt-project.org> on behalf of Maurice Kalinowski <Maurice.Kalinowski at qt.io>
Sent: Tuesday, January 16, 2018 8:40:03 AM
To: Thiago Macieira; development at qt-project.org
Subject: Re: [Development] QtCoap: QNAM-like API or not

> > They model their Coap client after QNAM and related classes (like
> > QNetworkRequest/Reply pair).
> >
> > As I understand it now - DTLS or not does not affect this API much -
> > they can later
>
> You don't know that. Until we know how DTLS will work, we won't know if
> there's any impact in the front-end API for CoAP. For example, can you use
> one CoAP server for both encrypted and not encrypted? Multicast and
> unicast?
>
> What's more, we CANNOT release a full CoAP API until it implements DTLS.
> It's just not acceptable to do so otherwise. Therefore, until there's DTLS, the
> API is Technology Preview and subject to change. So I don't feel we need to
> review it yet. I have not spent any time myself.
>
[Maurice Kalinowski]

I guess having it as Technology Preview for a first release is the usual way to go anyways. That way, the API could still be changed afterwards, but also interested parties could get a first impression and suggest adoptions already, even though DTLS is not available yet.

Personally, I do not see those two items (missing DTLS, release TP) conflicting. The only "problem" which might exist, if DTLS takes too long to implement and CoAP would stay for a very long time in TP mode.

Maurice
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