RE: How to use SNI with DTLS 1.2 on CoAP

Christian22 — Thu, 03 Nov 2022 11:54:08 GMT

Hi Achim,

Thanks for your help.

It works. I have tested it.

RE: How to use SNI with DTLS 1.2 on CoAP

Achim Kraus — Sat, 29 Oct 2022 06:36:05 GMT

According CoAP over DTLS 7.2, TLS_HOSTNAME is supported and may do the job.

err = setsockopt(sock, SOL_TLS, TLS_HOSTNAME, CONFIG_COAP_SERVER_HOSTNAME,
	 strlen(CONFIG_COAP_SERVER_HOSTNAME));
if (err) {
	LOG_ERR("Failed to setup TLS hostname (%s), errno %d\n",
		CONFIG_COAP_SERVER_HOSTNAME, errno);
	return -errno;
}

(I haven't tested it on my own.)