Re: [wakaama-dev] COAP over TCP/TLS

["Kraus Achim (INST/ESY1)" <Achim.Kraus@xxxxxxxxxxxx>]

Hi Bert,

> My question is this:  What is the community preference for switching between TCP and UDP?  Would a run-time switch (via the lwm2m_binding_t enum) or a build-time switch (via #define) be preferred?

>From my personal view, this depends on the size the firmware-images will get larger using a switch instead of the #define/#if.
Are there just a few different lines or is the difference larger (several hundred lines)?
 
Mit freundlichen Grüßen / Best regards

Achim Kraus

Bosch Software Innovations GmbH
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Von: wakaama-dev-bounces@xxxxxxxxxxx [mailto:wakaama-dev-bounces@xxxxxxxxxxx] Im Auftrag von Bert Kleewein
Gesendet: Dienstag, 10. Mai 2016 06:50
An: wakaama-dev@xxxxxxxxxxx
Cc: Carlos Alayo; Damon Barry; Haitham Shami
Betreff: [wakaama-dev] COAP over TCP/TLS

Hi All,

We are currently working to modify Wakaama/Erbium to support COAP over TCP/TLS (following https://tools.ietf.org/html/draft-ietf-core-coap-tcp-tls-01, but I assume we will upgrade to https://tools.ietf.org/html/draft-ietf-core-coap-tcp-tls-02) 

Our internal proof-of-concept currently chooses between UDP and TCP via compile-time switch (#define).  This was chosen as the path of least resistance, and it has both advantages and disadvantages.  

My question is this:  What is the community preference for switching between TCP and UDP?  Would a run-time switch (via the lwm2m_binding_t enum) or a build-time switch (via #define) be preferred?

Thanks,

-Bert