Admittedly, I'm no expert on this subject, but this code looks like it could run on an embedded device. I don't see any system calls, and it looks to rely most

Admittedly, I'm no expert on this subject, but this code looks like it could run on an embedded device. I don't see any system calls, and it looks to rely mostly on the standard library. glib.h is used in dtls_transport, but I suspect you can replace the certificate mechanism with something else.