Compile coap client

This is the little util that's being used for the actuall communication with the gateway. I've tried this on a raspberry pi so any debian:ish should work.

apt-get install libtool

.it clone --recursive https://github.com/obgm/libcoap.git
cd libcoap
git checkout dtls
git submodule update --init --recursive
./autogen.sh
./configure --disable-documentation --disable-shared
make
sudo make install

This gives you a nice little util that you can actually control your IKEA gateway with.

A command would look something like this.

coap-client -u "Client_identity" -k your-secret-key -m get "coaps://192.168.1.123:5684/15001/65537"

This will return all information about my lamp.

coap-client -u "Client_identity" -k your-secret-key -m get "coaps://192.168.1.123:5684/15001"

Calling above following seems to give you back a list of IDs for known devices. For me that returns [65536,65537] Where 65536 is the small remote control I have and 65537 is the lamp.

(All creeds to https://github.com/bwssytems/ha-bridge/issues/570#issuecomment-292081839 et. all in that thread)