On Friday 19 June 2015 15:36:34 Hudson, Douglas wrote: > John, > > FYI, I believe that there are there issues with the number of available > sockets with the Arduino WiFi shield. I think we limited to something like > 4 sockets. Something to consider as you move forward.
There are ways to reduce this. On a constrained device, we can safely assume that the OIC application is the only one doing CoAP, so we don't need to split multicast and unicast. It is possible to send and receive unicast in the same port as the multicast traffic. As Joey said, if there's no IPv6 support, then that also halves again the number of sockets. Note that without IPv6 support, such a device may not get certification, which is yet another nail in the coffin for Arduino support. We REALLY need to start working on a real target for small OS, not Arduino as proxy. Finally, there's the question of security. See my other email. Either way, this reduces to 1 or 2 sockets only. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center
