#include <nng/nng.h>
#include <nng/supplemental/http/http.h>
int nng_http_server_get_tls(nng_http_server *s, nng_tls_config **cfgp);
The nng_http_server_get_tls()
obtains the TLS configuration of server s and
saves a pointer to it in the address referenced by cfgp.
The configuration will be NULL
if the HTTP server instance is not enabled
to use HTTPS.