It’d be a pleasure to see a version for 1.3, but not all Maintained SSL libraries implement it yet, https://github.com/ARMmbed/mbedtls/issues/508 mbedTLS tls for example appears not to have it landed. This is one library often used in IoT environments
As I recall, this came out right on the cusp of TLS 1.3; so TLS 1.2 was what was currently deployed. Timing was awful for me, because I was working on a TLS 1.3 project, and this would have been super useful, but wasn't yet available.
It’d be a pleasure to see a version for 1.3, but not all Maintained SSL libraries implement it yet, https://github.com/ARMmbed/mbedtls/issues/508 mbedTLS tls for example appears not to have it landed. This is one library often used in IoT environments